The URL can be used to link to this page

The Bluffs at Lake Lucy SWMP Full Report - 10.08.2020THE BLUFFS AT LAKE LUCY DEVELOPMENT Chanhassen, Minnesota Stormwater Management Plan July 22, 2020 September 3, 2020 September 23, 2020 October 8, 2020 Project Number P12623-2020-022 www.ae2s.com Page i THE BLUFFS AT LAKE LUCY DEVELOPMENT STORMWATER MANAGEMENT PLAN October 2020 Professional Certification I hereby certify that this report was prepared by me or under my direct supervision and that I am a duly Registered Professional Engineer under the laws of the State of Minnesota Name: Company: Advanced Engineering and Environmental Services, Inc. (AE2S) Date: October 8, 2020 Registration Number: 48701 Prepared By: Advanced Engineering and Environmental Services, Inc. (AE2S) Water Tower Place Business Center 6901 E Fish Lake Road, Suite 184 Maple Grove, MN 55369 The Bluffs at Lake Lucy Stormwater Management Plan Table of Contents October 2020 www.ae2s.com Page ii Table of Contents Section 1 Introduction and Background...............................................................................1 1.1 Project Background............................................................................................................................................1 1.2 Data Used..............................................................................................................................................................1 1.3 October 2020 Update.......................................................................................................................................1 Section 2 Stormwater Management Requirements ............................................................3 2.1 City of Chanhassen............................................................................................................................................3 2.2 Riley Purgatory Bluff Creek Watershed District.......................................................................................3 2.3 Minnesota Pollution Control Agency..........................................................................................................3 Section 3 Methodology ..........................................................................................................5 3.1 Hydrology.............................................................................................................................................................5 3.2 Hydraulics............................................................................................................................................................5 3.3 Water Quality .....................................................................................................................................................6 Section 4 Analysis....................................................................................................................7 4.1 Existing Conditions............................................................................................................................................7 4.1.1 Site Topography.................................................................................................................................7 4.1.2 Soils........................................................................................................................................................7 4.1.3 Land Use...............................................................................................................................................7 4.2 Proposed Conditions.......................................................................................................................................8 4.2.1 Site Topography.................................................................................................................................8 4.2.2 Soils........................................................................................................................................................9 4.2.3 Land Use...............................................................................................................................................9 4.2.4 Basin Summary and Routing........................................................................................................10 Section 5 Results....................................................................................................................12 5.1 Basin High Water Levels.................................................................................................................................12 5.2 Rate Control......................................................................................................................................................13 5.3 Volume Abstraction........................................................................................................................................13 Water Quality Calculations..................................................................................................................................16 5.4 Wetland High Water Levels..........................................................................................................................17 Section 6 Waterbody Crossing.............................................................................................18 Section 7 Future Galpin Boulevard Expansion...................................................................19 List of Figures Figure 1.1 Site Location Map......................................................................................................................................2 The Bluffs at Lake Lucy Stormwater Management Plan Table of Contents October 2020 www.ae2s.com Page iii List of Tables Table 3.1 Summary of NOAA Atlas 14 Rainfall Depths (inches)..........................................................5 Table 4.1 Summary of Existing CN Values....................................................................................................8 Table 4.2 Existing Subcatchment Parameters.............................................................................................8 Table 4.3 Summary of Proposed CN Values................................................................................................9 Table 4.4 Proposed Subcatchment Parameters.......................................................................................10 Table 5.1 Stormwater Basin and Rear Yard Catch Basin Performance ...........................................12 Table 5.2 Stormwater Basin EOF Summary...............................................................................................12 Table 5.3 Summary of Site Peak Discharge Rates to Lake Lucy(cfs)................................................13 Table 5.4 Summary of Site Peak Discharge Rates to Pond LU 10-1 (cfs)......................................13 Table 5.5 Abstraction Requirement..............................................................................................................13 Table 5.6 Pond 2 Abstraction Amount........................................................................................................16 Table 5.7 Project Abstraction Summary .....................................................................................................16 Table 5.8 BMP Performance Summary........................................................................................................16 Table 5.9 Wetland High Water Levels .........................................................................................................17 Table 5.10 Wetland Bounce and Inundation Standards.........................................................................17 Table 5.11 Wetland 1 Bounce and Inundation Analysis .........................................................................17 Table 5.12 Wetland 2 Bounce and Inundation Analysis .........................................................................17 Appendices Appendix A: Figures Appendix B: Geotechnical Data, Infiltration Test Results, Web Soil Survey Report Appendix C: HydroCAD Summaries (Pre- and Post-Development) Appendix D: P8 Output Appendix E: Stormwater Performance Based Credit Calculator Results Appendix F: MIDS Results Appendix G: Outlet Structure Detail The Bluffs at Lake Lucy Stormwater Management Plan Section 1 – Introduction and Background October 2020 www.ae2s.com Page 1 Section 1 Introduction and Background 1.1 Project Background The Bluffs at Lake Lucy Development is an approximately 33± acre development within the city limits of Chanhassen, Minnesota. The development is located east of Galpin Blvd and north of the new The Park Development (see Figure 1 for site location map). This plan, prepared by Advanced Engineering and Environmental Services, Inc. (AE2S) is to document the basis of the storm water management design for the Development to meet the storm water management requirements. 1.2 Data Used The following data were used in this analysis: NRCS Soil Survey Aerial Imagery (MnGeo WMS Service, 2018 7-county) Existing Topography (MnDNR, MnTOPO, 2020) The Bluffs at Lake Lucy Development Plans (Sathre-Bergquist, September 2020) NOAA Atlas-14 Precipitation Data The Park Hydrocad Model 1.3 October 2020 Update Section 7 was added to the report to address the comments received from the City about the future Galpin Boulevard expansion. W1n WL W2 EX304 AEX504 EX112 EX206 EX502 EX501EX303 EX503 EX113 972 976974968966964 9 6 2 960 97 8 980 982 984 9869889 9 0 992 994 996 9 7 0998 956958 100410001002 1 0 0 6 10081 0 1 4 1010 10201012 1 01610181 02 810221026 1024 1030 103210341 036 1 000 1004992 1 0 3 0 9 56970 958 1008 962 960 101 2 9 5 8 97097810261 0141022 980 964970958 978102010229949881016972972996 9 9 2 9781022996 958 970 1 000 958 9729749789881012 1032 1 0 249921000 9589 8 6 974 9 88 958992 976 1 0081002 958 9589581006 986 10109881020 97697010269861 0 06 1010 9 9 8990 10 1 295898010101004 1004 978 1 0 3 2 10241014 10081004 9 74 990 98 2 10 141 0 1 0 9769761014 97 2 990958 1006 958956101 4 1 0 1 4 976 1002 9589801018 9 96 9 7 81020 974 982 10041018 9 8 2 9 58 10121012 1 0 0 2 9801016 9721018972 976958986974972 968956958990 10 1 2 958 976 958 1 0241022 1008 958 1 0 32 97410001002990 10221012 1016 101 6 984 994 1 002960 972 970 9561014994998 101 2976 974984992 95895810109 84992 956 1008966 Existin g Subcatchments Project Pa rcel Existin g C ontourswww.ae2s.com | Advanced Engineering and Environmental Services, Inc.Information depicted may include data unverified by AE2S. Any reliance upon such data is at the user ’s own risk. AE2S does not warrant this map or its features are either spatially or temporally accurate.Coordinate System: NAD 1983 HARN Adj MN Carver Feet | Edited by: lwehr | C:\Users\LWehr\AE2S\Sathre - Galphin\GIS\Fig2_ExistingConditions.mxd Date: 8/29/2020 Figure 2 ChanhassenCarver C ounty, MN Locator Map Not to Scale ¯ 1 inch = 350 feet 0 350175 Feet SATHRE-BERQU IST, INC EXISTINGCONDITIONS THE BLUFFSAT LAKE LUCY Wetland 2 Wetland 1 Wetland 1 Lake Lucy P LU 4-2 P LU 2-2 Watershed names in modeling and report include the prefix BLL_ The Bluffs at Lake Lucy Stormwater Management Plan Section 2 – Stormwater Management Requirements October 2020 www.ae2s.com Page 3 Section 2 Stormwater Management Requirements The following section describes the rules and regulations used to design this stormwater management plan. 2.1 City of Chanhassen The City of Chanhassen is in the process of updating their local water plan to correspond with the Riley Purgatory Bluff Creek Watershed’s plan. The development was designed to meet the RPBCWD standards as described below. 2.2 Riley Purgatory Bluff Creek Watershed District The site is within the Riley Purgatory Bluff Creek watershed management area. The following list summarizes the relevant stormwater management rules: The proposed activity / development shall not exceed the existing peak runoff rates for the 2-, 10-, 100-year, and 10-day snowmelt design storms. These storm events shall follow the NOAA Atlas 14 precipitation intensities and distributions. Stormwater runoff volume must be infiltrated or abstracted onsite in the amount equal to 1.1 inches of runoff generated from new impervious surface. The bottom of any infiltration device must be at least 3-ft above the seasonal high groundwater level. Low floor of structures need to be 2 feet above the 100-year event high water level. Provide at least 60% annual removal efficiency of total phosphorous and at least 90% annual removal efficiency for total suspended solids. For discharge to a high or exception-value wetland, RPBCWD requires load reductions of at least 90% for TSS and 75% for TP. 2.3 Minnesota Pollution Control Agency The Minnesota Pollution Control Agency (MPCA) regulates stormwater runoff by administering the National Pollution Discharge Elimination System (NPDES) Permit. The NPDES Permit is required for any projects that disturb more than one (1.0) acre of area. The permanent stormwater management requirements of the Permit are triggered if the project proposes to increase the impervious surface area by more than one acre. The overall project disturbance is over one acre; therefore, a Stormwater Pollution Prevention Plan (SWPPP) will need to be prepared and a NPDES Permit obtained through the MPCA. The proposed BMP(s) must be capable of retaining on site one (1) inch of runoff from the new The Bluffs at Lake Lucy Stormwater Management Plan Section 2 – Stormwater Management Requirements October 2020 www.ae2s.com Page 4 impervious surfaces created by the project. If onsite retention is not possible based on contaminated soils, proximity to groundwater, bedrock depth or impermeable soils, the water quality volume shall be treated using other best management practices outlined in the Permit. The Bluffs at Lake Lucy Stormwater Management Plan Section 3 – Methodology October 2020 www.ae2s.com Page 5 Section 3 Methodology The following section describes the methodology used to complete the stormwater management plan. 3.1 Hydrology The site was analyzed using HydroCAD for pre- and post-development conditions. Runoff generation was estimated using TR-20 methodology. The RPBCWD rainfall files were were used for the analysis. Runoff from pervious and impervious areas was calculated separately. Table 3.1 summarizes the rainfall depths that were used in the peak discharge analysis. These depths were taken from the RPBCWD rule guidance document. Table 3.1 Summary of NOAA Atlas 14 Rainfall Depths (inches) Rainfall Duration 2-Year 10-Year 100-Year 100-Year, 10-day snowmelt 24-Hours 2.87 4.27 7.41 7.20 Time of concentration (Tc) for existing conditions was calculated using the TR-55 methodology. For proposed condition subwatersheds, Tc was set to 15 minutes, with the exception of subwatersheds containing areas being unaltered by the development, which were calculated using TR-55 methodology. A minimum Tc of 15.0 is based on ~60 feet of sheet flow for the yards as well as in accordance with the City’s Engineering Guidelines noting a minimum Tc of 10-20 minutes for lateral pipes which serve developed residential areas. Curve numbers were selected for each subwatershed based on the land use, soil conditions and impervious surface area. These parameters were used to select the appropriate CN using TR-55 methodology. 3.2 Hydraulics Hydraulic routing within HydroCAD was computed using the sim-routing methodology. The sim-routing methodology was used due to reverse flow occurring between Wetland #2 and the upstream wetland P-LU 2-2. Using sim-routing allowed the HWL of Wetland #2 to be modeled correctly. Stormwater ponds were modeled with multi-stage outlets. The stormwater basin was sized to have at least 2.0 feet of freeboard from the lowest structure opening for the 100-year rainfall event. In addition, the emergency overflow invert elevation was set to provide at least 1.0 feet of freeboard above the lowest structure opening from any area where surface water is impounded during a flood event. The Bluffs at Lake Lucy Stormwater Management Plan Section 3 – Methodology October 2020 www.ae2s.com Page 6 3.3 Water Quality Water quality analysis was carried out using MIDS and P8, a program developed to analyze the generation and mass transport of pollutants within an urban environment. MIDS was used to provide water quality analysis of the irrigation system since P8 does not include a The Bluffs at Lake Lucy Stormwater Management Plan Section 4 – Analysis October 2020 www.ae2s.com Page 7 Section 4 Analysis The project analysis was completed by modifying The Park Development’s proposed conditions HydroCAD model. The Park Development’s proposed model included this development’s project area in its existing conditions and proposed conditions model. The Park Development’s proposed condition model was used as the existing conditions model for this development. The model was slightly modified for existing conditions to accurately reflect the drainage patterns in the area adjacent to the existing Ashling Meadows Development. The modified model was then used as the starting point for the proposed condition model. The information below reflects the new subwatersheds added to the models. 4.1 Existing Conditions The following is a summary of the information used for the existing conditions analysis 4.1.1 Site Topography The site is steeply sloped towards Wetland 1 and Lake Lucy. The northwest corner of the site is sloped to Wetland 2. 4.1.2 Soils Soils throughout the site were classified Hydrologic Soil Group (HSG) Type C in the previous models. This soil classification was kept and used for this analysis. 4.1.3 Land Use Existing subcatchments were delineated based on existing topography (MnTOPO). Weighted curve numbers were computed based on land use and NRCS hydrologic soil groups, and are summarized in Table 4.1. The Bluffs at Lake Lucy Stormwater Management Plan Section 4 – Analysis October 2020 www.ae2s.com Page 8 Table 4.1 Summary of Existing CN Values CN Descriptions Assumptions CN Total Area (ac) % of Total Area Lawn 74 6.30 18 County Ditch From previous model 74 0.27 1 County Road Surface 98 0.19 1 Existing homes 98 0.56 2 Existing road and sidewalk 98 0.42 1 Wetland 74 0.18 1 Woods 70 26.93 75 CN from previous model Same CN was used for watersheds within previous development area 79 1.06 3 Total 35.91 100 Table 4.2 Existing Subcatchment Parameters Subcatchment Composite CN Total Area (ac)Tc (min) W1n 71 21.33 15.1 W2 72 3.19 11.8 WL 70 5.29 3.2 A 72 0.52 6.0 BLL_EX112 79 0.52 15.0 BLL_EX113 70 0.03 20.5 BLL_EX206 79 0.31 15.0 BLL_EX303 74 0.23 15.0 BLL_EX304 78 2.85 9.5 BLL_EX501 90 0.31 15.0 BLL_EX502 89 0.27 15.0 BLL_EX503 74 0.03 15.0 BLL_EX504 78 1.03 15.0 Total 35.91 - 4.2 Proposed Conditions The following is a summary of the information used for the proposed conditions analysis. 4.2.1 Site Topography The most of the site is steeply sloped towards Wetland 1 and Lake Lucy. The northwest corner of the site is sloped to Wetland 2. The Bluffs at Lake Lucy Stormwater Management Plan Section 4 – Analysis October 2020 www.ae2s.com Page 9 4.2.2 Soils The curve number of the pervious areas disturbed by the development were modified to reflect that soils will be recompacted by rip/till compacted soil to 6” depth and then placing 6” inches of topsoil prior to revegetation. 4.2.3 Land Use The site will be developed with 31 residential lots, with new impervious areas including roads, sidewalks, trails, and buildings. Weighted CN values for each subwatershed were derived based on the following CN values provided in Table 4.3. Proposed impervious area was delineated based on the proposed layout plan. The parcel being developed is approximately 32 acres (without offsite areas included), of which 6.07 acres (19%) is new impervious. Table 4.3 Summary of Proposed CN Values CN Descriptions Assumptions CN Total Area (ac) % of Total Area Existing county road 98 0.19 0.5 Existing homes 98 0.56 1 Existing road and sidewalk Roadway and sidewalks undisturbed by project 98 0.20 0.5 Existing lawn Existing lawns undisturbed by project 74 3.07 9 Pond Pond 1 and Pond 2 98 1.13 3 Proposed homes and roads 98 5.54 15 Proposed lawn Soils will be recompacted so CN was not adjusted for compacted soils 74 13.21 37 Proposed sidewalk 98 0.20 0.5 Proposed trail 98 0.29 1 Woods Existing woods undisturbed by project 70 10.28 29 Wetland 98 0.18 0.5 CN from previous model Same CN was used for watersheds within previous development area 79 1.06 3 Total 35.91 100 Proposed subcatchments were delineated based on proposed grading and storm sewer routing. Table 4.4 summarizes proposed subcatchment runoff parameters. Figure 3 shows the proposed site grading, storm sewer and subcatchments. The Bluffs at Lake Lucy Stormwater Management Plan Section 4 – Analysis October 2020 www.ae2s.com Page 10 Table 4.4 Proposed Subcatchment Parameters Subcatchment Composite CN Total Area (ac)Tc (min) BLL_PR101 85 6.91 15.0 BLL_PR102 75 0.74 15.0 BLL_PR103 78 0.25 15.0 BLL_PR104 81 0.10 15.0 BLL_PR105 74 0.26 15.0 BLL_PR106 74 0.08 15.0 BLL_PR107 79 0.15 15.0 BLL_PR108 74 0.16 15.0 BLL_PR109 78 0.16 15.0 BLL_PR110 74 0.36 15.0 BLL_PR111 74 0.28 15.0 BLL_PR1121 79 0.52 15.0 BLL_PR1131 70 0.03 20.5 BLL_PR201 87 4.47 15.0 BLL_PR202 78 0.92 15.0 BLL_PR203 80 0.34 15.0 BLL_PR204 77 1.40 15.0 BLL_PR205 76 1.75 15.0 BLL_PR2061 79 0.31 15.0 BLL_PR207 83 0.13 15.0 BLL_PR301 71 9.03 24.4 BLL_PR302 73 1.42 36.5 BLL_PR3031 79 0.23 46.2 BLL_PR3041 78 2.85 9.5 BLL_PR401 74 0.10 15.0 BLL_PR4021 87 0.09 15.0 BLL_PR403 85 0.11 15.0 BLL_PR5011 74 0.31 15.0 BLL_PR5021 89 0.27 15.0 BLL_PR503 74 0.01 15.0 BLL_PR5041 74 1.03 15.0 BLL_PR505 70 0.03 6.4 BLL_PR601 73 1.11 9.1 Total 35.91 - 1 These watersheds are areas outside of the project site that drain to project area 4.2.4 Basin Summary and Routing The project is proposing to construct two stormwater basins within the project area, Pond 1 and Pond 2. Pond 1 will be a wet pond and Pond 2 will be a wet pond with an infiltration shelf. Pond design and locations were limited by site grades, soils, and the need to preserve some of the wooded areas. Soil borings and double ring infiltration tests were taken at several locations in The Bluffs at Lake Lucy Stormwater Management Plan Section 4 – Analysis October 2020 www.ae2s.com Page 11 the site. The location of Pond 2 was the only location that had soils that permitted infiltration. An infiltration basin was proposed in this location. Pond 2 is large enough to provide all of the project’s required abstraction but the elevation of Pond 2, adjacent grades, and wooded areas prevented all of the project’s impervious surfaces from being routed to Pond 2. Therefore an additional pond (Pond 1) was proposed in the northwest corner of the site to allowed treatment of stormwater from the impervious surfaces Pond 2 is unable to treat. Water will be routed to the basins through storm sewer in the roadways, rear yard catch basins, and overland flow. See Sections 5.3 and 5.4 for descriptions of the basins. Overall the project is maximizing the amount of impervious surface area to the proposed infiltration basin while maximizing the amount of trees to be preserved with the installation of retaining walls on site. The Bluffs at Lake Lucy Stormwater Management Plan Section 5 – Results October 2020 www.ae2s.com Page 12 Section 5 Results The following is a summary of the results of the analysis and the project’s compliance with stormwater regulations. 5.1 Basin High Water Levels Table 5.1 summarizes the performance of the stormwater basins and rear yard catch basins including 100-year HWL’s and freeboard from the lowest nearby structure. The basins were designed to provide at least 2.0 feet of freeboard from the lowest structure opening to the 100- year HWL. Additionally, the basins EOF’s were designed to provide at least 1.0 feet of freeboard from the lowest structure opening. The EOF summary is provided in Table 5.2. Table 5.1 Stormwater Basin and Rear Yard Catch Basin Performance Location Normal Water Level 100-Year HWL Lowest Nearby Structure Elev. Freeboard (ft) Pond 1 973.0 977.0 WO, 981.6 4.6 Pond 2 964.0 967.3 WO, 1001.4 34.1 Pond LU 2-41 974.0 976.5 WO, 981.6 5.1 CB 9 1010.0 1010.5 FB, 1014.5 4.0 CB 11 997.5 997.8 WO, 1002.1 4.3 CB 13A 1014.0 1014.1 No adjacent structures CB 22 978.5 978.6 LO, 982.1 3.5 CB 23 978.5 978.6 WO, 981.6 3.0 CB 24 979.0 979.1 WO, 984.1 5.0 CB 25 981.0 981.1 WO, 986.6 5.5 CB 26 983 983.2 WO, 988.6 5.4 CB 27 986.0 986.2 WO, 992.1 5.9 CB 28 995.0 995.2 WO, 998.1 2.9 CB 29 997.0 997.1 WO, 1001.6 4.5 CB 30 1000.0 1000.2 LO, 1006.8 6.6 CB 37 1004.0 1004.4 FB, 1007.8 3.4 1 Pond LU 2-4 is an existing wet pond in Ashling Meadows. The basin is adjacent to one lot in the proposed development. The HWL was taken from the development plans and reported in this table to show that the proposed home meet freeboard for the existing pond. Table 5.2 Stormwater Basin EOF Summary Location EOF Elevation Lowest Nearby Structure Elev. Freeboard (ft) Pond 1 979.1 WO, 981.6 1.5 Pond 2 968.2 WO, 1001.4 33.2 The Bluffs at Lake Lucy Stormwater Management Plan Section 5 – Results October 2020 www.ae2s.com Page 13 5.2 Rate Control The development site was analyzed to determine the pre- and post-development runoff rates to Lake Lucy. The majority of the site’s new impervious surfaces discharge to Lake Lucy via Wetland 1. A small area of development discharges north to Pond LU 10-1 which then discharges to Lake Lucy. This area includes reconstructed roadways and sidewalks. Runoff rates to Lake Lucy were reported in order to reflect the entire site discharge. Table 5.3 below summarizes the pre- and post-development discharge rates to Lake Lucy. Runoff rates to Pond LU 10-1 were also separately reported to show the rates to the northern offsite area separate from the rest of the project. Table 5.3 below summarizes the pre- and post-development discharge rates to Pond LU 10-1. The runoff rates in Table 5.4 are also included in rates in Table 5.3. See Appendix C for the pre- and post-development HydroCAD summaries. Table 5.3 Summary of Site Peak Discharge Rates to Lake Lucy(cfs) Condition 2-Year 10-Year 100-Year 100-Year, 10 day snowmelt Existing 27.5 68.3 191.9 25.1 Proposed 26.5 67.1 188.4 23.9 Difference -1.0 -1.2 -3.5 -20.9 Table 5.4 Summary of Site Peak Discharge Rates to Pond LU 10-1 (cfs) Condition 2-Year 10-Year 100-Year 100-Year, 10 day snowmelt Existing 13.9 30.2 64.4 1.2 Proposed 13.6 29.0 61.9 1.2 Difference -0.3 -1.2 -2.5 -0.0 5.3 Volume Abstraction RPBCWD requires abstraction of 1.1 inches from the new impervious surface area or the volume from the 95th percentile storm-event runoff from the site. The abstraction volume requirements based on the 1.1 inch requirement are summarized in Table 5.4. Table 5.5 Abstraction Requirement New Impervious Area (ac)1 Required Abstraction Volume (ac-ft) Required Abstraction Volume (cf) 5.54 0.51 22,121 The Bluffs at Lake Lucy Stormwater Management Plan Section 5 – Results October 2020 www.ae2s.com Page 14 1 new impervious area does not include sidewalks and trails less than 10’ that are bordered downgradient by a pervious buffer that is at least 10’ wide The RBPCWD rules require infiltration of the abstracted volume or one of the volume abstraction options if the site cannot meet the volume performance standard. The Bluffs at Lake Lucy site is able to infiltrate the entire volume performance standard in Pond 2. Pond 2 was located where two double ring infiltrometer testing results showed an infiltration rate of 0.72 in/hr and 1.67 in/hr respectively. Groundwater was observed 22 feet below proposed basin bottom in this location. Therefore, infiltration is possible in Pond 2. An infiltration system with the top of sand at elevation 964 was designed within Pond 2. An infiltration rate of 0.72 in/hr was used in the design of the system in order to be conservative since this was the lesser of the two measured infiltration rates. The abstraction volume requirements and the abstraction provided by Pond 2 are summarized in Table 5.6. While Pond 2 provides sufficient volume to meet the abstraction standard for the entire project, the impervious area of the entire site is not tributary to Pond 2. The western portion of the site’s impervious surfaces are tributary to Pond 1. Below are the alternatives considered by the project to provide volume abstraction for the additional western impervious areas. Alternative #1 – Pond 1 as an Infiltration Basin Pond 1 could provide volume abstraction if it was converted from a wet pond to a infiltration basin. Double ring infiltrometer testing in the location of Pond 1 shows that the infiltration rate of the soils in the location of Pond 1 is zero. Since there is no potential for infiltration in the location of Pond 1, the alternative of converting Pond 1 to an infiltration basin was rejected. Alternative #2 – Alternative Locations for Pond 1 The alternative of moving Pond 1 to another location that allows infiltration was considered. The area across Della Drive from Pond 1 was considered. This location contains a watercourse and the pipe outlet for Pond 1 and Wetland 2. The alternative of placing a pond in this location was dismissed because the pond grading would create impacts to the watercourse. The steep slopes along the southern boundary of the western part of the project along with the required wetland buffer zone prevented a pond from being placed behind the homes on the south side of Della Drive. The wooded area east of Pond 1 was also dismissed from consideration due to the steep slopes in the location and the wooded area. Constructing a pond in this location would cause extensive disturbance to a high quality natural area. This left no other locations besides the current location of Pond 1. Alternative #3 – Route More Water to Pond 2 The potential of routing parts of Della Drive to Pond 2 was considered. This would involve adding a run of storm sewer from the end of Della Drive to Pond 2. The elevation difference The Bluffs at Lake Lucy Stormwater Management Plan Section 5 – Results October 2020 www.ae2s.com Page 15 between Della Drive and Pond 2 is 46 feet. Installing a deep storm sewer between Della Drive and Pond 2 would create a large area of disturbance in Outlot A. Outlot A is heavily wooded and these woods are being preserved by the development to meet City of Chanhassen requirements. This alternative was rejected due to its conflict with City requirements and additional disturbances in high quality areas. Alternative #4 – Reduce Impervious Surfaces The alternative of reducing impervious surfaces was considered. Impervious area could be reduced by removing the sidewalk along the north side of Della Drive or reducing the width of Della Drive. The road width and sidewalk location are designed to meet the City of Chanhassen’s standards. Both of these options were dismissed from consideration because they do not fit the City of Chanhassen’s standards Alternative #5 – Tree Preservation Creating additional abstraction through tree preservation was considered. The site is heavily wooded and the development was designed to maintain some of the wooded areas. The project will also preserve 4.38 acres of existing woodlands. This will result in the protection of 295 deciduous trees. The protected trees include American elm, apple, basswood, black cherry, bitternut hickory, boxelder maple, bur oak, hackberry, green ash, quaking aspen, red oak, Siberian elm, sugar maple, and white oak. The average diameter at breast height is 17 inches. The abstraction volume created by maintaining the woods was quantified using the Center for Watershed Protection’s Stormwater Performance-Based Credit Calculator. The calculator results are in Appendix E. The tree preservation provided 2,407 cubic feet of abstraction. Alternative #6 - Irrigation Irrigation using stormwater was considered for the vegetated areas within the site. These areas were limited to outlots and public areas. The irrigation system would using volume from Pond 1 in order to provide abstraction for the impervious surfaces routed to Pond 1. The total proposed irrigation area is 3.05 acres. The abstraction volume provided by the irrigation was calculated using MIDS. The irrigation system provides 5,285 cubic feet of abstraction. The MIDS results are included in Appendix F. Selected Alternatives In addition to the infiltration basin in Pond 2, the development selected to complete Alternative #5 and #6 to meet the volume standard to the maximum extent practical. Alternatives #5 and #6 are both feasible and practical for the project. Table 5.7 shows the abstraction volume provided by the selected alternatives. The Bluffs at Lake Lucy Stormwater Management Plan Section 5 – Results October 2020 www.ae2s.com Page 16 Table 5.6 Pond 2 Abstraction Amount Basin Top of Sand Infiltration Area (sf) Water Quality Depth (ft) Abstracted Volume (cf) Design Infiltration Rate (in/hr) Drawdown (hrs) Pond 2 964.0 14,160 1.5 25,482 0.72 47 Table 5.7 Project Abstraction Summary BMP Abstracted Volume (cf)Amount of Impervious Routed to BMP (ac) Pond 2 25,482 2.5 Tree Preservation 2,407 N/A Irrigation 5,285 2.94 Total 33,174 5.54 Water Quality Calculations The overall water quality goal is for the development to maintain or reduce the pollutant loadings to downstream water resources for Total Phosphorus (TP) and Total Suspended Solids (TSS). In addition, the RPBCWD requires load reductions of at least 90% for TSS and 60% for TP for proposed development. For discharge to a high or exception-value wetland, RPBCWD requires load reductions of at least 90% for TSS and 75% for TP. The site discharges to Wetland 1 which is exceptional-value wetland so the site BMPs were design to meet the more stringent removal requirements. The existing conditions of the site was analyzed in P8 to determine the existing pollutant loading rates. The proposed condition of the site was analysis in P8 to determine the proposed loading and removal rates provided by Pond 1 and Pond 2. The P8 model was run with the parameters specified in the RPBCWD rule guidance document. The results of P8 were combined with the removal rates shown in MIDS to quantify the TP removal provided by the irrigation system. Only the TSS removal from P8 was reported in Table 5.8. Table 5.6 summarizes the performance of the Best Management Practices to meet the TSS and TP removal requirements. See Appendix D for the detailed P8 result summaries. Table 5.8 BMP Performance Summary Variable Existing Loading (lbs/yr) Proposed Loading (lbs/yr) Total Removed (lbs/yr) Proposed Discharge (lbs/yr) Pollutant Reduction (from Existing Conditions) Load Reduction (%) TSS 999 5852 5523 299 -700 94 TP 3.3 18.6 16.0 2.6 -0.7 86 The Bluffs at Lake Lucy Stormwater Management Plan Section 5 – Results October 2020 www.ae2s.com Page 17 5.4 Wetland High Water Levels RPBCWD requires that impacts to onsite wetlands be limited to the permitted bounce, inundation period and runout control elevations. Table 5.10 shows the requirements for the site. Table 5.11 shows the bounce and inundation period for Wetland 1 and Table 5.12 shows the bounce and inundation period for Wetland 2. Table 5.9 Wetland High Water Levels Condition Wetland 1 100-Year HWL Wetland 2 100-Year HWL Existing 958.9’973.7’ Proposed 958.8’973.6’ Table 5.10 Wetland Bounce and Inundation Standards Wetland Wetland Value Permitted Bounce for the 10- Event Inundation Period for the 1- and 2-Year Event Inundation Period for the 10-Year Event Runout Control Elevation Wetland 1 Exceptional Existing Existing Existing No change Wetland 2 Medium Existing +/- 1.0’Existing + 2 days Existing + 14 days 0 – 1.0 ft above existing runout Table 5.11 Wetland 1 Bounce and Inundation Analysis Condition Bounce for the 10-Year Event Inundation Period for the 1- and 2- Year Event Inundation Period for the 10-Year Event Runout Control Elevation 10-Year HWL Existing 1.1’13 hrs 17 hrs 957.0 958.1’ Proposed 1.1’13 hrs 17 hrs 957.0 958.1’ Table 5.12 Wetland 2 Bounce and Inundation Analysis Condition Bounce for the 10-Year Event Inundation Period for the 1- and 2-Year Event Inundation Period for the 10-Year Event Runout Control Elevation 10-Year HWL Existing 2.2’13 hrs 85 hrs 969.9 972.1’ Proposed 2.1’13 hrs 84 hrs 969.9 972.0’ The Bluffs at Lake Lucy Stormwater Management Plan Section 6 – Waterbody Crossing October 2020 www.ae2s.com Page 18 Section 6 Waterbody Crossing The project contains an existing CMP pipe that connects Wetland 2 to Wetland 1. The pipe is a 18-inch CMP with a FES in Wetland 2 that transitions to a 27-inch CMP before discharging at the top of steep slope to Wetland 1. The pipe serves as the outlet for Wetland 2. The pipe crosses the project area in the same location as the proposed development road. Since the pipe is in conflict with the roadway and will need to be replaced, the project is proposing to modify the pipe and its outlet to provide additional stabilization while maintaining hydraulic capacity. The project is proposing to replace the existing CMP pipe with a series of pipes, stabilize the pipe’s inlet in Wetland 2, and stabilize the outlet in Wetland 1. The existing FES in Wetland 2 will be replaced with a multi-stage outlet in order to match the existing Wetland 2 HWL and bounce. The outlet will connect via 12-inch RCP pipe to a manhole adjacent to Pond 1. The Pond 1 outlet pipe will also connect to this manhole. A 27” RCP pipe downstream of the manhole will convey the water from Wetland 2 and Pond 1 to a FES above the boundary of Wetland 1. The proposed system will match the existing condition of one FES discharging to Wetland 1 from the project area. The water existing the FES at Wetland 1 will have a max velocity of 3.95 FPS. A minimum of Class 2 rip rap will be placed around the FES to provide adequate stabilization. The proposed pipe is included in the proposed conditions analysis. As demonstrated by Table 5.9, Table 5.11, and Table 5.3, the proposed project including the new pipe connection will not cause an increase in bounce, inundation, flood elevations, pollutant loading, or discharge rates to Wetland 1 or Lake Lucy downstream in accordance with RPBCWD rules. The Bluffs at Lake Lucy Stormwater Management Plan Section 7 – Future Galpin Boulevard Expansion October 2020 www.ae2s.com Page 19 Section 7 Future Galpin Boulevard Expansion The City has in its long-term plan to expand Galpin Boulevard to a four-lane urban roadway. As part of the concept planning phase for the future roadway, a preliminary proposed impervious surface area was developed and a preliminary water quality volume needed to treat the new additional impervious area for the roadway expansion was determined. Kimley-Horn prepared this information and detailed the findings in a memorandum dated May 29, 2018. The findings of the memo noted there is the need for 7,600 cubic feet of water quality volume in the vicinity of the proposed development, specifically in the location of where Pond 1 is being proposed. The proposed Bluffs at Lake Lucy development has maximized the footprint of Pond 1 in the general location of where the Kimley-Horn memorandum noted the need for the Galpin Boulevard water quality volume. Pond 1 footprint has been maximized to allow the future Galpin Boulevard project to discharge the required water quality volume to the pond and modify the pond accordingly to meeting the stormwater regulations at the time the project is completed. Pond 1 has over 70,000 cubic feet of live storage (Pond stage: 973-976) and ample freeboard from the neighboring lot low opening (4.6 feet) able to be utilized for Galpin Boulevard. The Bluffs at Lake Lucy Stormwater Management Plan Appendix A October 2020 www.ae2s.com Appendix A: Figures W1n WL W2 EX304 AEX504 EX112 EX206 EX502 EX501EX303 EX503 EX113 972 976974968966964 9 6 2 960 97 8 980 982 984 9869889 9 0 992 994 996 9 7 0998 956958 100410001002 1 0 0 6 10081 0 1 4 1010 10201012 1 01610181 02 810221026 1024 1030 103210341 036 1 000 1004992 1 0 3 0 9 56970 958 1008 962 960 101 2 9 5 8 97097810261 0141022 980 964970958 978102010229949881016972972996 9 9 2 9781022996 958 970 1 000 958 9729749789881012 1032 1 0 249921000 9589 8 6 974 9 88 958992 976 1 0081002 958 9589581006 986 10109881020 97697010269861 0 06 1010 9 9 8990 10 1 295898010101004 1004 978 1 0 3 2 10241014 10081004 9 74 990 98 2 10 141 0 1 0 9769761014 97 2 990958 1006 958956101 4 1 0 1 4 976 1002 9589801018 9 96 9 7 81020 974 982 10041018 9 8 2 9 58 10121012 1 0 0 2 9801016 9721018972 976958986974972 968956958990 10 1 2 958 976 958 1 0241022 1008 958 1 0 32 97410001002990 10221012 1016 101 6 984 994 1 002960 972 970 9561014994998 101 2976 974984992 95895810109 84992 956 1008966 Existin g Subcatchments Project Pa rcel Existin g C ontourswww.ae2s.com | Advanced Engineering and Environmental Services, Inc.Information depicted may include data unverified by AE2S. Any reliance upon such data is at the user ’s own risk. AE2S does not warrant this map or its features are either spatially or temporally accurate.Coordinate System: NAD 1983 HARN Adj MN Carver Feet | Edited by: lwehr | C:\Users\LWehr\AE2S\Sathre - Galphin\GIS\Fig2_ExistingConditions.mxd Date: 8/29/2020 Figure 2 ChanhassenCarver C ounty, MN Locator Map Not to Scale ¯ 1 inch = 350 feet 0 350175 Feet SATHRE-BERQU IST, INC EXISTINGCONDITIONS THE BLUFFSAT LAKE LUCY Wetland 2 Wetland 1 Wetland 1 Lake Lucy P LU 4-2 P LU 2-2 Watershed names in modeling and report include the prefix BLL_ 777777777777777777 7 7 777 7 77777777777 7 77 7 777777777777777777777Watershed names in modeling and report include the prefix BLL_ PR301 PR101 PR201 PR304 PR205 PR302 PR204 PR601 PR504 PR102 PR112 PR202 PR110 PR203 PR206PR501 PR111 PR502 PR105 PR103 PR303 PR108 PR109PR107 PR207 PR403PR401 PR104 PR402 PR106 PR113PR505 Proposed SubcatchmentsProject Parcel 7 Proposed Storm SewerExisting Impervious (undisturbed)Proposed imperviousProposed lawn (decompacted area)Proposed pondsProposed sidewalks and trail (exempt impervious)www.ae2s.com | Advanced Engineering and Environmental Services, Inc.Information depicted may include data unverified by AE2S. Any reliance upon such data is at the user ’s own risk. AE2S does not warrant this map or its features are either spatially or temporally accurate.Coordinate System: NAD 1983 HARN Adj MN Carver Feet | Edited by: lwehr | C:\Users\LWehr\AE2S\Sathre - Galphin\GIS\Fig3_ProposedConditions.mxd Date: 8/29/2020 Figure 3 ChanhassenCarver C ounty, MN Locator Map Not to Scale ¯ 1 inch = 350 feet 0 350175 Feet SATHRE-BERQU IST, INC PROPOSEDCONDITIONS THE BLUFFSAT LAKE LUCY Pond 1 Pond 2 Wetland 1 Wetland 2P LU 2-2 P LU 4-2 Wetland 1 Wetland 1 Lake Lucy Project Parcelwww.ae2s.com | Advanced Engineering and Environmental Services, Inc.Information depicted may include data unverified by AE2S. Any reliance upon such data is at the user’s own risk. AE2S does not warrant this map or its features are either spatially or temporally accurate.Coordinate System: NAD 1983 HARN Adj MN Carver Feet | Edited by: lwehr | C:\Users\LWehr\AE2S\Sathre - Galphin\GIS\Fig1_ProjectLocation.mxd Date: 7/22/2020 Figure 1 ChanhassenCarver County, MN Locator Map Not to Scale ¯ 1 inch = 1,000 feet 0 1,000500 Feet SAT HRE -BERQU IST, INC PROJECTLOCATION THE BLUFFSAT LAKE LUCY The Bluffs at Lake Lucy Stormwater Managmenet Plan Appendix B October 2020 www.ae2s.com Appendix B: Web Soil Survey Report Hydrologic Soil Group—Carver County, Minnesota Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 7/20/2020 Page 1 of 44969100496920049693004969400496950049696004969700496980049691004969200496930049694004969500496960049697004969800454500454600454700454800454900455000455100455200455300455400455500455600 454500 454600 454700 454800 454900 455000 455100 455200 455300 455400 455500 455600 44° 52' 50'' N 93° 34' 36'' W44° 52' 50'' N93° 33' 43'' W44° 52' 25'' N 93° 34' 36'' W44° 52' 25'' N 93° 33' 43'' WN Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 15N WGS84 0 250 500 1000 1500 Feet 0 50 100 200 300 Meters Map Scale: 1:5,380 if printed on A landscape (11" x 8.5") sheet. Soil Map may not be valid at this scale. MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Rating Polygons A A/D B B/D C C/D D Not rated or not available Soil Rating Lines A A/D B B/D C C/D D Not rated or not available Soil Rating Points A A/D B B/D C C/D D Not rated or not available Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:12,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Carver County, Minnesota Survey Area Data: Version 17, Jun 5, 2020 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Aug 26, 2014—Sep 7, 2014 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Hydrologic Soil Group—Carver County, Minnesota Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 7/20/2020 Page 2 of 4 Hydrologic Soil Group Map unit symbol Map unit name Rating Acres in AOI Percent of AOI EX Essexville sandy loam B/D 14.8 12.4% HM Hamel loam, 0 to 2 percent slopes C/D 3.8 3.2% KB Kilkenny-Lester loams, 2 to 6 percent slopes C/D 17.7 14.8% KC Lester-Kilkenny loams, 6 to 12 percent slopes B 16.4 13.7% KC2 Lester-Kilkenny complex, 6 to 10 percent slopes, moderately eroded C 8.0 6.7% KD Lester-Kilkenny loams, 12 to 18 percent slopes B 5.7 4.7% KD2 Lester-Kilkenny complex, 10 to 16 percent slopes, moderately eroded C 0.3 0.3% KE2 Lester-Kilkenny complex, 16 to 22 percent slopes C 16.6 13.9% KF Lester-Kilkenny complex, 22 to 40 percent slopes C 4.4 3.7% MK Muskego and Houghton soils, 0 to 1 percent slopes C/D 24.0 20.0% MP Klossner and Muskego soils, ponded, 0 to 1 percent slopes C/D 5.2 4.4% TC Terril loam, 6 to 12 percent slopes B 0.3 0.2% W Water 2.5 2.1% Totals for Area of Interest 119.9 100.0% Hydrologic Soil Group—Carver County, Minnesota Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 7/20/2020 Page 3 of 4 Description Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long-duration storms. The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (A/D, B/D, and C/D). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. Rating Options Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie-break Rule: Higher Hydrologic Soil Group—Carver County, Minnesota Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 7/20/2020 Page 4 of 4 Table of Contents Description Page A. Introduction ...................................................................................................................................... 1 A.1. Project Description .............................................................................................................. 1 A.1.a. Structural Loads ...................................................................................................... 1 A.1.b. Pavement Traffic Loads .......................................................................................... 1 A.2. Site Conditions and History ................................................................................................. 1 A.3. Purpose ................................................................................................................................ 2 A.4. Background Information and Reference Documents .......................................................... 2 A.5. Scope of Services ................................................................................................................. 3 B. Results .............................................................................................................................................. 4 B.1. Geologic Overview .............................................................................................................. 4 B.2. Boring Results ...................................................................................................................... 4 B.3. Groundwater ....................................................................................................................... 5 B.4. Laboratory Test Results ....................................................................................................... 5 C. Recommendations ........................................................................................................................... 5 C.1. Design and Construction Discussion ................................................................................... 5 C.1.a. Building Subgrade Preparation .............................................................................. 5 C.1.b. Reuse of On-Site Soils ............................................................................................. 6 C.1.c. Disturbance of On-Site Soils ................................................................................... 6 C.1.d. Effects of Groundwater .......................................................................................... 6 C.2. Site Grading and Subgrade Preparation .............................................................................. 6 C.2.a. Building Subgrade Excavations ............................................................................... 6 C.2.b. Excavation Oversizing ............................................................................................. 7 C.2.c. Excavated Slopes .................................................................................................... 8 C.2.d. Filling on Slopes ...................................................................................................... 9 C.2.e. Excavation Dewatering ........................................................................................... 9 C.2.f. Selecting Excavation Backfill and Additional Required Fill ..................................... 9 C.2.g. Pavement and Exterior Slab Subgrade Preparation ............................................. 10 C.2.h. Pavement Subgrade Proofroll .............................................................................. 10 C.2.i. Engineered Fill Materials and Compaction Requirements ................................... 10 C.3. Spread Footings ................................................................................................................. 12 C.3.a. Embedment Depth ............................................................................................... 12 C.3.b. Subgrade Improvement ....................................................................................... 12 C.3.c. Net Allowable Bearing Pressure ........................................................................... 13 C.3.d. Settlement ............................................................................................................ 13 C.4. Below-Grade Walls ............................................................................................................ 13 C.4.a. Drainage Control .................................................................................................. 13 C.4.b. Selection, Placement and Compaction of Backfill ................................................ 15 C.4.c. Configuring and Resisting Lateral Loads............................................................... 16 C.5. Interior Slabs ..................................................................................................................... 17 C.5.a. Moisture Vapor Protection .................................................................................. 17 C.5.b. Radon ................................................................................................................... 17 C.6. Frost Protection ................................................................................................................. 17 C.6.a. General ................................................................................................................. 17 C.6.b. Frost Heave Mitigation ......................................................................................... 18 Table of Contents (continued) Description Page C.7. Pavements and Exterior Slabs ........................................................................................... 19 C.7.a. Design Sections .................................................................................................... 19 C.7.b. Bituminous Pavement Materials .......................................................................... 20 C.7.c. Subgrade Drainage ............................................................................................... 20 C.7.d. Performance and Maintenance ........................................................................... 20 C.8. Utilities .............................................................................................................................. 21 C.8.a. Subgrade Stabilization .......................................................................................... 21 C.8.b. Selection, Placement, and Compaction of Backfill ............................................... 21 C.8.c. Corrosion Potential .............................................................................................. 21 D. Procedures...................................................................................................................................... 21 D.1. Penetration Test Borings ................................................................................................... 21 D.2. Exploration Logs ................................................................................................................ 22 D.2.a. Log of Boring Sheets ............................................................................................. 22 D.2.b. Geologic Origins ................................................................................................... 22 D.3. Material Classification and Testing ................................................................................... 22 D.3.a. Visual and Manual Classification .......................................................................... 22 D.3.b. Laboratory Testing ............................................................................................... 22 D.4. Groundwater Measurements ............................................................................................ 23 E. Qualifications .................................................................................................................................. 23 E.1. Variations in Subsurface Conditions .................................................................................. 23 E.1.a. Material Strata ..................................................................................................... 23 E.1.b. Groundwater Levels ............................................................................................. 23 E.2. Continuity of Professional Responsibility .......................................................................... 24 E.2.a. Plan Review .......................................................................................................... 24 E.2.b. Construction Observations and Testing ............................................................... 24 E.3. Use of Report..................................................................................................................... 24 E.4. Standard of Care ................................................................................................................ 24 Appendix Soil Boring Location Sketch Log of Boring Sheets ST-1 through ST-8 Descriptive Terminology of Soil A. Introduction A.1. Project Description Lennar Corporation is planning to develop a single-family housing development on the Nelson Properties along the east side of Galpin Boulevard in Chanhassen, Minnesota. This site is comprised of 5 separate but adjoining parcels of land totaling about 188 acres. However, a substantial part of this site is considered to be wetlands. The proposed development will consist of approximately 200 single-family house sites. The development will also include the construction of the associated streets, underground utilities, and stormwater features/ponds. A.1.a. Structural Loads We understand the construction will consist of 1- to 2-story wood-framed houses with pitched roofs and full basements on poured concrete foundations. Based on the residential construction, we have based our analysis and recommendations on the assumption that footing pressures will not exceed 2,000 psf. Please contact us if this information is not correct. A.1.b. Pavement Traffic Loads We have assumed that bituminous pavements, typical of residential neighborhoods, will be subjected to normal traffic conditions over a design life of 20 years. A.2. Site Conditions and History The site is located on the east side of Galpin Boulevard and north of 30th Street NE. The ground surface consists of rolling terrain with current grades, based on the elevations at the soil borings, ranging from about elevation 960 feet to 1020 feet Mean Sea Level (MSL). There are several wetlands on this site, including some open water. There are also some wooded areas on this site. The following recent aerial photograph shows the current site conditions, as obtained through Google Earth. Lennar Corporation Project B1805858 June 29, 2018 Page 2 Photograph 1. Aerial Photograph of the Site Photograph provided by Google Earth® A.3. Purpose The purpose of our geotechnical evaluation will be to characterize subsurface geologic conditions at selected exploration locations and evaluate their impact on the design and construction of the residential development. A.4. Background Information and Reference Documents We reviewed the following information:  Available public aerial photographs showing the existing site conditions.  Undated Preliminary Site Concept plans prepared by Pioneer Engineering. Lennar Corporation Project B1805858 June 29, 2018 Page 3  Carver County property maps showing the different parcels of property and potential wetlands.  Geologic atlas showing the general soil types present in this area. We have described our understanding of the proposed construction and site to the extent others reported it to us. Depending on the extent of available information, we may have made assumptions based on our experience with similar projects. If we have not correctly recorded or interpreted the project details, the project team should notify us. New or changed information could require additional evaluation, analyses and/or recommendations. A.5. Scope of Services We completed our services based on the Proposal for Geotechnical Evaluation to Mr. Ben Bahr of Lennar Corporation. The following list describes the geotechnical tasks completed in accordance with our authorized scope of services.  Reviewing the background information and reference documents previously cited.  Coordinating the clearing of the exploration locations of public underground utilities. The boring locations were chosen and staked in the field by Pioneer Engineering. The existing ground surface elevations at the borings were also provided by Otto.  Performing 8 standard penetration test (SPT) borings, denoted as ST-1 to ST-8, to nominal depths of 14 1/2 feet below grade across the site.  Performing laboratory testing on select samples to aid in soil classification and engineering analysis.  Preparing this report containing a boring location sketch, logs of the soil borings, a summary of the soils encountered by the current borings, results of laboratory tests, and recommendations for structure and pavement subgrade preparation and the design of foundations, floor slabs, exterior slabs and utilities. When the borings were being completed, Boring ST-6 encountered some marginal soil at the planned termination depth of 14 1/2 feet. This boring was subsequently extended an additional 5 feet. Lennar Corporation Project B1805858 June 29, 2018 Page 4 Our scope of services did not include environmental services or testing, and we did not train the personnel performing this evaluation to provide environmental services or testing. We can provide these services or testing at your request. B. Results B.1. Geologic Overview We based the geologic origins used in this report on the soil types, in-situ and laboratory testing, and available common knowledge of the geological history of the site. Because of the complex depositional history, geologic origins can be difficult to ascertain. We did not perform a detailed investigation of the geologic history for the site. B.2. Boring Results Table 1 provides a summary of the current soil boring results in the general order we encountered the strata. Please refer to the Log of Boring sheets in the Appendix for additional details. The Descriptive Terminology sheet in the Appendix includes definitions of abbreviations used in Table 1. Table 1. Subsurface Profile Summary* Strata Soil Type - ASTM Classification Range of Penetration Resistances Commentary and Details Fill Soils OL, CL  Encountered by Borings ST-1, ST-3 and ST-6.  Mostly organic clay with some lean clay and sandy lean clay.  Ranged in thickness from about 2 to 9 feet.  Moisture condition generally moist. Topsoil OL  Consisted of black organic clay.  Thickness ranged from 1/2 to 2 1/2 feet.  Moisture condition generally moist. Glacial deposits CL, SC 2 to 17 BPF  Mostly sandy lean clay, lean clay or clayey sand.  Variable amounts of gravel and cobbles.  Moisture condition generally moist. *Abbreviations defined in the attached Descriptive Terminology sheet. Lennar Corporation Project B1805858 June 29, 2018 Page 5 B.3. Groundwater While drilling the borings, groundwater was only observed in Boring ST-6 at a depth of about 6 feet, or an elevation of about 885 MSL. However, based on the recovered soil samples, it is likely that the water observed was perched in lenses of silty sand. The attached Log of Boring sheets in the Appendix also include water level information and additional details. Seasonal and annual fluctuations of groundwater should be anticipated. B.4. Laboratory Test Results The boring logs show the results of the laboratory testing we performed, next to the tested sample depth. The laboratory tests were all completed in general conformance with the applicable ASTM standards. The Log of Boring sheets are in the Appendix of this report. The moisture content tests (ASTM D 2216) performed on selected soil samples showed moisture contents ranging from about 16 to 32 percent. The majority of the soils tested appeared to be near or slightly above the soils estimated optimum moisture content. Pocket penetrometer tests were completed on selected clayey soil samples to estimate the unconfined compressive strength of the soils. The results ranged from about 1/4 to 2 tons per square foot (tsf). C. Recommendations C.1. Design and Construction Discussion C.1.a. Building Subgrade Preparation Based on the results of our subsurface exploration and evaluation, spread footing foundations bearing on engineered fill and/or native soils can support the proposed houses after performing typical subgrade preparation. Typical subgrade preparation includes removing existing vegetation, topsoil or organic soils, swamp deposits, fill soils, and any existing structures, along with areas of soft clays. Lennar Corporation Project B1805858 June 29, 2018 Page 6 We estimate that cuts and fills could range from about 5 to 15 feet from existing grades. Any soil correction work to further remove unsuitably soft soils could add or subtract to these assumed cut and fill depths. C.1.b. Reuse of On-Site Soils The on-site fill soils, free of organic materials and debris, as well as most of the native soils appear suitable for reuse as engineered fill. Some of the soil samples appeared to be overly wet and will likely require drying to allow the recommended soil compaction levels to be achieved. We caution that some of the lean clays encountered on the site are very wet and will be extremely moisture sensitive and likely be difficult for reuse and compaction. Additional moisture conditioning will likely be required prior to reuse for structural fill. Any materials to be used as engineered fill should be tested and approved by the geotechnical engineer prior to placement. C.1.c. Disturbance of On-Site Soils We caution that the clayey nature of some of the site soils makes them susceptible to disturbance from construction. Care should be taken not to disturb these soils during construction, as once stable subgrades can be destabilized and require additional moisture conditioning and compacting. C.1.d. Effects of Groundwater Groundwater is anticipated to be below typical excavation depths at this site, although perched water could be present at higher elevations within layers of granular soils overlying lower permeability soils. The contractor should immediately remove any collected water within the excavations to facilitate construction and proper backfilling. C.2. Site Grading and Subgrade Preparation C.2.a. Building Subgrade Excavations We recommend removing unsuitable materials from beneath house pads and oversize areas. We define unsuitable materials as vegetation, topsoil, swamp deposits, fill, organic soils, existing structures, existing utilities, and soft/loose soil. Table 2 shows the anticipated excavation depths and bottom of soil correction excavation elevations at each of the current soil boring locations, assuming that structures, utilities or roads will be built at each location. Excavation depths could be reduced in areas that will not support future structures, utilities or roads. Lennar Corporation Project B1805858 June 29, 2018 Page 7 Table 2. Recommended Excavation Depths for Building Pads Location Approximate Surface Elevation (ft) Anticipated Excavation Depth (ft) Anticipated Bottom Elevation (ft) ST-1 980.8 5 975 1/2 ST-2 1002.9 1/2-5 1002 1/2-998* ST-3 970.1 4 966 ST-4 963.4 1-4* 962-959* ST-5 980.8 2 1/2 978 ST-6 991.4 9-18* 982-973* ST-7 1018.2 1 1017 ST-8 1001.3 1 1/2-9* 1000 1/2-992* *To be determined in the field during site grading activities. Due to variability in soil conditions and the presence of wetland areas, at some of the soil boring locations we have given a range of expected soil correction excavation depths. Excavation depths will vary between the borings. Portions of the excavations may also extend deeper than indicated by the borings. A geotechnical representative should observe the excavations to make the necessary field judgments regarding the suitability of the exposed soils. Any disturbed areas should be re-compacted. The contractor should use equipment and techniques to reduce soil disturbance. If soils become disturbed or are wet, we recommend excavation and replacement of the disturbed or unstable soils. Provided the existing soils do not become disturbed, surface compaction will not be necessary prior to construction of footings. C.2.b. Excavation Oversizing When removing unsuitable materials below structures or pavements, we recommend the excavation extend outward and downward at a slope of 1H:1V (horizontal:vertical) or flatter. See Figure 1 for an illustration of excavation oversizing. Lennar Corporation Project B1805858 June 29, 2018 Page 8 Figure 1. Generalized Illustration of Oversizing C.2.c. Excavated Slopes Based on the borings, we anticipate on-site soils in excavations will consist of mostly clayey soils with lesser amounts of sandy soils. The clay soils are typically considered Type B Soil under OSHA (Occupational Safety and Health Administration) guidelines. OSHA guidelines indicate unsupported excavations in Type B soils should have a gradient no steeper than 1:1V. The sand soils are typically Type C Soil under OSHA guidelines. OSHA guidelines indicate unsupported excavations in Type C soils should have a gradient no steeper than 1.5H:1V. Slopes constructed in this manner may still exhibit surface sloughing. OSHA requires an engineer to evaluate slopes or excavations over 20 feet in depth. An OSHA-approved qualified person should review the soil classification in the field. Excavations must comply with the requirements of OSHA 29 CFR, Part 1926, Subpart P, “Excavations and Trenches.” This document states excavation safety is the responsibility of the contractor. The project specifications should reference these OSHA requirements. 1. Engineered fill as defined in C.2.i 2. Excavation oversizing minimum of 1 to 1 (horizontal to vertical) slope or flatter 3. Engineered fill as required to meet pavement support or landscaping requirements as defined in C.2.i 4. Excavation back-slope to OSHA requirements Lennar Corporation Project B1805858 June 29, 2018 Page 9 C.2.d. Filling on Slopes Where existing or excavated grades are steeper than 4H:1V, we recommend placing fill from low to high elevations on horizontal benches cut into the native soils so that successive lifts are spread and compacted on level surfaces, and a potential failure surface is not created along the fill’s lower boundary. Depending on fill requirements, the contractor can construct benches by cutting into existing grades while placing fill (the composition of the exposed soils thus being in compliance with fill specifications), or by cutting the benches in advance of filling (to prevent mixing with soils not in compliance with fill specifications). The height of a given bench may vary but the width should consistently be great enough to accommodate large, self-propelled compaction equipment. C.2.e. Excavation Dewatering We recommend removing groundwater from the excavations. Project planning should include temporary sumps and pumps for excavations in low-permeability soils, such as clays. Dewatering of high- permeability soils (e.g., sands) from within the excavation with conventional pumps has the potential to loosen the soils, due to upward flow. A well contractor should develop a dewatering plan; the design team should review this plan. C.2.f. Selecting Excavation Backfill and Additional Required Fill On-site soils free of organic soil and debris can be considered for reuse as backfill and fill. However, the topsoil and the organic fill soils should not be re-used as engineered fill under house pads or below streets. Although clays can be used as fill if properly moisture conditioned and compacted, for ease of construction, if possible, the higher moisture content clay should not be used as engineered fill below house pads and streets. Unless a drainage composite is placed against the backs of the exterior perimeter basement walls, we recommend that backfill placed within 2 horizontal feet of those walls consist of sand having less than 50 percent of the particles, by weight, passing a #40 sieve and less than 5 percent of the particles, by weight, passing a #200 sieve. Sand meeting this gradation will need to imported to the site. We recommend that the balance of the backfill placed against exterior perimeter walls also consist of sand; although it is our opinion that the sand may contain up to 20 percent of the particles, by weight, passing a #200 sieve. Lennar Corporation Project B1805858 June 29, 2018 Page 10 C.2.g. Pavement and Exterior Slab Subgrade Preparation We recommend the following steps for pavement and exterior slab subgrade preparation. Note that project planning may need to require additional subcuts to limit frost heave. Silt soils, if within the frost zone, can lead to a very high risk of damaging frost heave. 1. Strip unsuitable soils consisting of topsoil, organic soils, vegetation, existing structures and pavements from the area, within 3 feet of the surface of the proposed pavement grade. 2. Have a geotechnical representative observe the excavated subgrade to evaluate if additional subgrade improvements are necessary. 3. Slope subgrade soils to areas of sand or drain tile to allow the removal of accumulating water. 4. Scarify, moisture condition and surface compact the subgrade with at least 3 passes by a large roller with a minimum drum diameter of 3 1/2 feet. 5. Place pavement fill to grade and compact in accordance with Section C.2.i to bottom of pavement and exterior slab section. 6. Proofroll the pavement or exterior slab subgrade as described in Section C.2.h. C.2.h. Pavement Subgrade Proofroll After preparing the subgrade as described above and prior to the placement of the aggregate base, we recommend proofrolling the subgrade soils with a fully loaded tandem-axle truck. We also recommend having a geotechnical representative observe the proofroll. Areas that fail the proofroll likely indicate soft or weak areas that will require additional soil correction work to support pavements or slabs. The contractor should correct areas that display excessive yielding or rutting during the proofroll, as determined by the geotechnical representative. Possible options for subgrade correction include moisture conditioning and re-compaction, subcutting and replacement with soil or crushed aggregate, chemical stabilization and/or geotextiles. We recommend performing a second proofroll after the aggregate base material is in place, and prior to placing bituminous or concrete pavement/slabs. C.2.i. Engineered Fill Materials and Compaction Requirements Table 3 below contains our recommendations for engineered fill materials. Lennar Corporation Project B1805858 June 29, 2018 Page 11 Table 3. Engineered Fill Materials Locations To Be Used Engineered Fill Classification Possible Soil Type Descriptions Gradation Additional Requirements  Below foundations  Below interior slabs Structural fill SP, SP-SM, SM, SC, CL 100% passing 2-inch sieve < 2% Organic Content (OC) Plasticity Index (PI) < 15%  Drainage layer  Non-frost- susceptible  Free-draining  Non-frost- susceptible fill GP, GW, SP, SW 100% passing 1-inch sieve < 50% passing #40 sieve < 5% passing #200 sieve < 2% OC Behind below-grade walls, beyond drainage layer Retained fill SP, SW, SP-SM, SW-SM, SM 100% passing 3-inch sieve < 20% passing #200 sieve < 2% OC PI< 4% Pavements Pavement fill SP, SP-SM, SM, SC, CL 100% passing 3-inch sieve < 2% OC PI < 15% Below landscaped surfaces, where subsidence is not a concern Non-structural fill 100% passing 6-inch sieve < 10% OC * More select soils comprised of coarse sands with < 5% passing #200 sieve may be needed to accommodate work occurring in periods of wet or freezing weather. Based on the rolling terrain and the need for some deeper soil correction work, it is likely that some of the house pads will require more than 10 feet of compacted fill. If only clay fill is used to fill those house pads where more than 10 feet of fill is needed, a construction delay ranging from 3 to 12 months may be needed, depending on the final depths of clay fill used. As an alternative, on lots where deep fills are needed, clean sand fill (less than 12 percent passing the number 200 sieve) could be used to initially fill the excavations below these house pads. The clean sand fill should be placed in thin compacted lifts up to an elevation of 10 feet of less from finished basement floor grades. On-site clay fill can then be used to complete construction of the building pads. If the alternative method of filling the house pads is used, a construction delay would not be needed. We recommend spreading fill in loose lifts of approximately 8 inches thick. We recommend compacting fill in accordance with the criteria presented below in Table 4. The project documents should specify relative compaction of fill, based on the structure located above the fill, and vertical proximity to that structure. Lennar Corporation Project B1805858 June 29, 2018 Page 12 Table 4. Compaction Recommendations Summary Reference Relative Compaction, percent (ASTM D698 – Standard Proctor) Moisture Content Variance from Optimum, percentage points Below foundations, less than 10 feet of fill 95 -1 to +3 for clay soils ±3 for sandy soils Below foundations, greater th an 10 feet of fill 98 -1 to +2 for clay soils ±3 for sandy soils Below slabs 95 -1 to +3 for clay soils ±3 for sandy soils Below pavements, within 3 feet of top of subgrade elevations 100 -2 to +1 for clay soils ±3 for sandy soils Below pavements, more than 3 feet below subgrade elevations 95 -1 to +3 for clay soils ±3 for sandy soils Below landscaped surfaces 90 -1 to +5 for clay soils ±6 for sandy soils The project documents should not allow the contractor to use frozen material as fill or to place fill on frozen material. Frost should not penetrate under foundations during construction. We recommend performing density tests in fill to evaluate if the contractors are effectively compacting the soil and meeting project requirements. Refer to Section C.3.d below for additional remarks for thicker layers of fill soils. C.3. Spread Footings C.3.a. Embedment Depth For frost protection, we recommend embedding perimeter footings of the proposed houses, including attached garages, a minimum of 42 inches below the lowest exterior grade. Interior footings may be placed directly below floor slabs unless they will be subjected to freezing. We recommend embedding building footings not heated during winter construction, and other unheated footings associated with decks, porches, stoops or sidewalks 60 inches below the lowest exterior grade. C.3.b. Subgrade Improvement If a small amount of groundwater is present within the footing excavation, or if the footing subgrade soils become disturbed prior to placing forms or reinforcement, we recommend subcutting any soft or wet soil and placing a 6- to 12-inch layer of clear rock. The clear rock will provide a stable working surface, and will allow for the flow of water to a drain tile or sump pump. Lennar Corporation Project B1805858 June 29, 2018 Page 13 C.3.c. Net Allowable Bearing Pressure We recommend sizing spread footings to exert a net allowable bearing pressure of up to 2,000 pounds per square foot (psf). This value includes a safety factor of at least 3.0 with regard to bearing capacity failure. C.3.d. Settlement We estimate that total and differential settlements among the footings will amount to less than 1 and 1/2 inch, respectively, under the assumed loads. If there are areas where more than 10 feet of fill is required, higher settlements could occur, unless the deeper fill areas are only filled with poorly graded sand (SP) or poorly graded sand with silt (SP-SM) fill. If deep fill areas are completed using clay soil, a construction delay may also be needed to allow the fill soils to consolidate under its own weight. Construction delays could range from 6 to 12 months, depending on the type of fill used, the compaction level obtained in the fill and the thickness of the fill. The construction delays should be evaluated after grading is completed by using settlement plates to monitor the consolidation of the fill. C.4. Below-Grade Walls The following sections address soil parameters for basement wall design. Although construction of retaining walls has not been specified for this project to date, the following recommendations can also be used for preliminary retaining wall design. We recommend that additional soil borings be completed for final retaining wall design. C.4.a. Drainage Control We recommend installing drain tile to remove water behind the below-grade walls at the location shown in Figure 2. The below-grade wall drainage system should also incorporate free-draining, engineered fill or a drainage board placed against the wall and connected to the drain tile. Even with the use of free-draining, engineered fill, we recommend general waterproofing of below-grade walls that surround occupied or potentially occupied areas because of the potential cost impacts related to seepage after construction is complete. Lennar Corporation Project B1805858 June 29, 2018 Page 14 Figure 2. Generalized Illustration of Wall Engineered Fill The materials listed in the sketch should meet the definitions in Section C.4.b. Low-permeability material is capable of directing water away from the wall, like clay, topsoil or pavement. The project documents should indicate if the contractor should brace the walls prior to filling, and the allowable unbalanced fill heights. As shown in Figure 2, we recommend Zone 2 consist of retained, engineered fill, and this material will control lateral pressures on the wall. However, we are also providing design parameters for using other engineered fill material. If final design uses non-sand material for engineered fill, project planning should account for the following items:  Other engineered fill material may result in higher lateral pressure on the wall.  Other engineered fill material may be more difficult to compact. 1. 2-foot wide area of Free- Draining Engineered Fill or Drainage Board 2. Retained Engineered Fill 3. 1 foot of Low-Permeability Soil or Pavement Lennar Corporation Project B1805858 June 29, 2018 Page 15  Post-construction consolidation of other engineered fill material may result in settlement- related damage to the structures or slabs supported on the engineered fill. Post-construction settlement of other engineered fill material may also cause drainage towards the structure. The magnitude of consolidation could be up to about 3 percent of the wall fill thickness. C.4.b. Selection, Placement and Compaction of Backfill Unless a drainage composite is placed against the backs of the exterior perimeter basement walls, we recommend that backfill placed within 2 horizontal feet of those walls consist of sand having less than 50 percent of the particles, by weight, passing a #40 sieve and less than 5 percent of the particles, by weight, passing a #200 sieve. Sand meeting this gradation will likely need to imported to the site. We recommend that the balance of the backfill placed against exterior perimeter walls also consist of sand, though it is our opinion that the sand may contain up to 20 percent of the particles, by weight, passing a #200 sieve. If clay must be considered for use to make up the balance of the below-grade wall backfill (assuming a drainage composite or sand is placed against the backs of the walls), post-compaction consolidation of the clay occurring under its own weight can be expected to continue beyond the end of construction. The magnitude of consolidation could amount to between 1 and 3 percent of the backfill thickness, or wall height, and if not accommodated, could cause slabs or pavements to settle unfavorably or be damaged. Should clay still be considered for use as backfill, however, we further recommend that:  The bottoms of the excavations required for basement wall construction are wide enough to accommodate compaction equipment.  Backfill is placed at moisture contents at least equal to, but not more than, 3 percentage points above its optimum moisture content.  Backfill is placed in loose lifts no thicker than 6 inches prior to compaction.  The relative compaction of the backfill is measured through density testing at intervals not exceeding 1 test per 50 horizontal feet for each 2 vertical feet of backfill placed. We recommend using a walk-behind compactor to compact the backfill placed within about 5 feet of the basement walls. Further away than that, a self-propelled compactor can be used. Compaction criteria for basement walls should be determined based on the compaction recommendations provided above in Section C.2. Lennar Corporation Project B1805858 June 29, 2018 Page 16 Exterior backfill not capped with slabs or pavement should be capped with a low-permeability soil to limit the infiltration of surface drainage into the backfill. The finished surface should also be sloped to divert water away from the walls. C.4.c. Configuring and Resisting Lateral Loads Below-grade wall design can use active earth pressure conditions, if the walls can rotate slightly. If the wall design cannot tolerate rotation, then design should use at-rest earth pressure conditions. Rotation up to 0.002 times the wall height is generally required for walls supporting sand. Rotation up to 0.02 times the wall height is required when wall supports clay. Table 5 presents our recommended lateral coefficients and equivalent fluid pressures for wall design of active, at-rest and passive earth pressure conditions. The table also provides recommended wet unit weights and internal friction angles. Designs should also consider the slope of any engineered fill and dead or live loads placed behind the walls within a horizontal distance that is equal to the height of the walls. Our recommended values assume the wall design provides drainage so water cannot accumulate behind the walls. The construction documents should clearly identify what soils the contractor should use for engineered fill of walls. Table 5. Recommended Below-Grade Wall Design Parameters – Drained Conditions Retained Soil Wet Unit Weight, pcf Friction Angle, (degrees Equivalent Active Fluid Pressure* (pcf) Equivalent At-Rest Fluid Pressure* (pcf) Equivalent Passive Fluid Pressure* (pcf) Sand (SP, SP-SM) 120 33 35 55 400 Silty Sand (SM) 125 30 42 62 360 Clay (CL) 120 26 47 70 300 * Based on Rankine model for soils in a region behind the wall extending at least 2 horizontal feet beyond the bottom outer edges of the wall footings and then rising up and away from the wall at an angle no steeper than 60 degrees from horizontal. Sliding resistance between the bottom of the footing and the soil can also resist lateral pressures. We recommend assuming a sliding coefficient equal to 0.30 between the concrete and clay soil. The values presented in this section are un-factored. Lennar Corporation Project B1805858 June 29, 2018 Page 17 C.5. Interior Slabs C.5.a. Moisture Vapor Protection Excess transmission of water vapor could cause floor dampness, certain types of floor bonding agents to separate, or mold to form under floor coverings. If project planning includes using floor coverings or coatings, we recommend placing a vapor retarder or vapor barrier immediately beneath the slab. We also recommend consulting with floor covering manufacturers regarding the appropriate type, use and installation of the vapor retarder or barrier to preserve warranty assurances. C.5.b. Radon In preparation for radon mitigation systems, we recommend that slabs on grade be constructed over a layer of gas permeable material consisting of a minimum of 4 inches of either clean aggregate material or coarse sand. The aggregate material should consist of rock no larger than 2 inches and no smaller than 1/4 inch. Sand should have less than 50 percent of the particles by weight passing a #40 sieve and less than 5 percent of the particles by weight passing a #200 sieve. Above the gas permeable aggregate or sand, a polyethylene sheeting (6-mil minimum) should be placed. The sheeting should be properly lapped and penetrations through the sheeting sealed. Penetrations through the slab and foundation walls should also be sealed. C.6. Frost Protection C.6.a. General A mixture of clay and silty sand soil will likely underlie all of the exterior slabs, as well as pavements. Most of these soils are considered to be moderately to highly frost susceptible. The fine-grained soils as well as some of the silty sand can retain moisture and heave upon freezing. In general, this characteristic is not an issue unless these soils become saturated, due to surface runoff or infiltration, or are excessively wet in situ. Once frozen, unfavorable amounts of general and isolated heaving of the soils and the surface structures supported on them could develop. This type of heaving could affect design drainage patterns and the performance of exterior slabs and pavements, as well as any isolated exterior footings and piers. Note that general runoff and infiltration from precipitation are not the only sources of water that can saturate subgrade soils and contribute to frost heave. Roof drainage and irrigation of landscaped areas in close proximity to exterior slabs, pavements, and isolated footings and piers, contribute as well. Lennar Corporation Project B1805858 June 29, 2018 Page 18 C.6.b. Frost Heave Mitigation To address most of the heave related issues, we recommend setting general site grades and grades for exterior surface features to direct surface drainage away from buildings, across large paved areas and away from walkways. Such grading will limit the potential for saturation of the subgrade and subsequent heaving. General grades should also have enough “slope” to tolerate potential larger areas of heave, which may not fully settle after thawing. Even small amounts of frost-related differential movement at walkway joints or cracks can create tripping hazards. Project planning can explore several subgrade improvement options to address this condition. One of the more conservative subgrade improvement options to mitigate potential heave is removing any frost-susceptible soils present below the exterior slab areas down to a minimum depth of 4 feet below subgrade elevations. We recommend filling the resulting excavation with non-frost-susceptible fill. We also recommend sloping the bottom of the excavation toward one or more collection points to remove any water entering the engineered fill. This approach will not be effective in controlling frost heave without removing the water. An important geometric aspect of the excavation and replacement approach described above is sloping the banks of the excavations to create a more gradual transition between the unexcavated soils considered frost susceptible and the engineered fill in the excavated area, which is not frost susceptible. The slope allows attenuation of differential movement that may occur along the excavation boundary. We recommend slopes that are 3H:1V, or flatter, along transitions between frost-susceptible and non- frost-susceptible soils. Lennar Corporation Project B1805858 June 29, 2018 Page 19 Figure 3 that follows shows an illustration summarizing some of the recommendations. Figure 3. Frost Protection Geometry Illustration Another option is to limit frost heave in critical areas, such as doorways and entrances, via frost-depth footings or localized excavations with sloped transitions between frost-susceptible and non-frost- susceptible soils, as described above. Over the life of slabs and pavements, cracks will develop and joints will open up, which will expose the subgrade and allow water to enter from the surface and either saturate or perch atop the subgrade soils. This water intrusion increases the potential for frost heave or moisture-related distress near the crack or joint. Therefore, we recommend implementing a detailed maintenance program to seal and/or fill any cracks and joints. The maintenance program should give special attention to areas where dissimilar materials abut one another, where construction joints occur and where shrinkage cracks develop. C.7. Pavements and Exterior Slabs C.7.a. Design Sections Our scope of services for this project did not include laboratory tests on subgrade soils to determine an R-value for pavement design. Since most of the soils on this site consist of clay, we recommend that the pavements be designed for an assume R-value of 10. Note the contractor may need to perform limited removal of unsuitable or less suitable soils to achieve this value. Lennar Corporation Project B1805858 June 29, 2018 Page 20 We assumed that pavements for the residential development will be subject to a maximum of 50,000 ESALs over a 20-year design life. Based upon the aforementioned traffic loads and an R-value of 10, we recommend a bituminous pavement section for the local residential streets that includes a minimum of 3 1/2 inches of bituminous pavement, (a 1 1/2-inch surface course over a 2-inch base course), over 8 inches of aggregate base material, and 12 inches of select granular fill. The City of Chanhassen may have a standard pavement section that is different. C.7.b. Bituminous Pavement Materials Appropriate mix designs are critical to the performance of flexible pavements. We can provide recommendations for pavement material selection during final pavement design. C.7.c. Subgrade Drainage We recommend installing perforated drainpipes throughout pavement areas at low points, around catch basins, and behind curb in landscaped areas. We also recommend installing drainpipes along pavement and exterior slab edges where exterior grades promote drainage toward those edge areas. The contractor should place drainpipes in small trenches, extended at least 8 inches below the granular subbase layer, or below the aggregate base material where no subbase is present. C.7.d. Performance and Maintenance We based the above pavement designs on a 20-year performance life for bituminous. This is the amount of time before we anticipate the pavement will require reconstruction. This performance life assumes routine maintenance, such as seal coating and crack sealing. The actual pavement life will vary depending on variations in weather, traffic conditions and maintenance. It is common to place the non-wear course of bituminous and then delay placement of the wear course. For this situation, we recommend evaluating if the reduced pavement section will have sufficient structure to support construction traffic. Many conditions affect the overall performance of the exterior slabs and pavements. Some of these conditions include the environment, loading conditions and the level of ongoing maintenance. With regard to bituminous pavements in particular, it is common to have thermal cracking develop within the first few years of placement, and continue throughout the life of the pavement. We recommend developing a regular maintenance plan for filling cracks in exterior slabs and pavements to lessen the Lennar Corporation Project B1805858 June 29, 2018 Page 21 potential impacts for cold weather distress due to frost heave or warm weather distress due to wetting and softening of the subgrade. C.8. Utilities C.8.a. Subgrade Stabilization Earthwork activities associated with utility installations located inside building pad areas should adhere to the recommendations in Section C.2. For exterior utilities, we anticipate the soils at typical invert elevations will be suitable for utility support. However, if construction encounters unfavorable conditions such as soft clay, organic soils or perched water at invert grades, the unsuitable soils may require some additional subcutting and replacement with sand or crushed rock to prepare a proper subgrade for pipe support. Project design and construction should not place utilities within the 1H:1V oversizing of foundations. C.8.b. Selection, Placement, and Compaction of Backfill We recommend selecting, placing, and compacting utility backfill in accordance with the recommendations provided above in Section C.2.i. C.8.c. Corrosion Potential Based on our experience, some of the clay soils encountered by the borings are moderately corrosive to metallic conduits. However, the sand soils are generally not corrosive to metallic conduits. If the pipe may be embedded in clay soils, we recommend specifying non-corrosive materials or providing corrosion protection, unless project planning chooses to perform additional tests to demonstrate the soils are not corrosive. D. Procedures D.1. Penetration Test Borings We drilled the penetration test borings on June 21, 2018, with an off-road-mounted core and auger drill equipped with hollow-stem auger. We performed the borings in general accordance with ASTM D6151 taking penetration test samples at 2 1/2- or 5-foot intervals in general accordance to ASTM D1586. The boring logs show the actual sample intervals and corresponding depths. Lennar Corporation Project B1805858 June 29, 2018 Page 22 D.2. Exploration Logs D.2.a. Log of Boring Sheets The Appendix includes Log of Boring sheets for our penetration test borings. The logs identify and describe the penetrated geologic materials, and present the results of penetration resistance and other in-situ tests performed. The logs also present the results of laboratory tests performed on penetration test samples, and groundwater measurements. We inferred strata boundaries from changes in the penetration test samples and the auger cuttings. Because we did not perform continuous sampling, the strata boundary depths are only approximate. The boundary depths likely vary away from the boring locations, and the boundaries themselves may occur as gradual rather than abrupt transitions. D.2.b. Geologic Origins We assigned geologic origins to the materials shown on the logs and referenced within this report, based on: (1) a review of the background information and reference documents cited above, (2) visual classification of the various geologic material samples retrieved during the course of our subsurface exploration, (3) penetration resistance and other in-situ testing performed for the project, (4) laboratory test results, and (5) available common knowledge of the geologic processes and environments that have impacted the site and surrounding area in the past. D.3. Material Classification and Testing D.3.a. Visual and Manual Classification We visually and manually classified the geologic materials encountered based on ASTM D2488. When we performed laboratory classification tests, we used the results to classify the geologic materials in accordance with ASTM D2487. The Appendix includes a chart explaining the classification system we used. D.3.b. Laboratory Testing The exploration logs in the Appendix note the results of the laboratory tests performed on geologic material samples. We performed the tests in general accordance with ASTM procedures. Lennar Corporation Project B1805858 June 29, 2018 Page 23 D.4. Groundwater Measurements The drillers checked for groundwater while advancing the penetration test borings, and again after auger withdrawal. We then immediately filled the boreholes. E. Qualifications E.1. Variations in Subsurface Conditions E.1.a. Material Strata We developed our evaluation, analyses and recommendations from a limited amount of site and subsurface information. It is not standard engineering practice to retrieve material samples from exploration locations continuously with depth. Therefore, we must infer strata boundaries and thicknesses to some extent. Strata boundaries may also be gradual transitions, and project planning should expect the strata to vary in depth, elevation and thickness, away from the exploration locations. Variations in subsurface conditions present between exploration locations may not be revealed until performing additional exploration work, or starting construction. If future activity for this project reveals any such variations, you should notify us so that we may reevaluate our recommendations. Such variations could increase construction costs, and we recommend including a contingency to accommodate them. E.1.b. Groundwater Levels We made groundwater measurements under the conditions reported herein and shown on the exploration logs, and interpreted in the text of this report. Note that the observation periods were relatively short, and project planning can expect groundwater levels to fluctuate in response to rainfall, flooding, irrigation, seasonal freezing and thawing, surface drainage modifications and other seasonal and annual factors. Lennar Corporation Project B1805858 June 29, 2018 Page 24 E.2. Continuity of Professional Responsibility E.2.a. Plan Review We based this report on a limited amount of information, and we made a number of assumptions to help us develop our recommendations. Braun Intertec should be retained to review the geotechnical aspects of the designs and specifications. This review will allow us to evaluate whether we anticipated the design correctly, if any design changes affect the validity of our recommendations, and if the design and specifications correctly interpret and implement our recommendations. Braun Intertec should also be retained to complete the soil observations and testing as the site is being graded. E.2.b. Construction Observations and Testing We recommend retaining us to perform the required observations and testing during construction as part of the ongoing geotechnical evaluation. This will allow us to correlate the subsurface conditions exposed during construction with those encountered by the borings and provide professional continuity from the design phase to the construction phase. If we do not perform observations and testing during construction, it becomes the responsibility of others to validate the assumption made during the preparation of this report and to accept the construction-related geotechnical engineer-of-record responsibilities. E.3. Use of Report This report is for the exclusive use of the addressed parties. Without written approval, we assume no responsibility to other parties regarding this report. Our evaluation, analyses and recommendations may not be appropriate for other parties or projects. E.4. Standard of Care In performing its services, Braun Intertec used that degree of care and skill ordinarily exercised under similar circumstances by reputable members of its profession currently practicing in the same locality. No warranty, express or implied, is made. Appendix 4 5 7 8 6 8 1 1/2 Benchmark: Soil boring elevations provided by Pioneer Engineering.28 25 FILL FILL CL CL FILL: Organic Clay, black, moist. FILL: Sandy Lean Clay, trace Gravel, light and dark brown, moist. SANDY LEAN CLAY, trace Gravel, brown, moist, medium. (Glacial Till) SANDY LEAN CLAY, trace Gravel, gray, moist, medium. (Glacial Till) END OF BORING. Water not observed while drilling. Boring immediately backfilled. 978.3 976.8 973.8 966.3 2.5 4.0 7.0 14.5 6/21/18 1" = 4'DATE:SCALE:DRILLER: Tests or NotesWL ST-1 page 1 of 1 3 1/4" HSA, AutohammerM. Takada L O G O F B O R I N G (See Descriptive Terminology sheet for explanation of abbreviations)LOCATION: See attached sketch. (Soil-ASTM D2488 or D2487, Rock-USACE EM1110-1-2908) Description of Materials ST-1 METHOD: BORING: BPF Braun Intertec CorporationB1805858LOG OF BORING N:\GINT\PROJECTS\AX PROJECTS\2018\05858.GPJ BRAUN_V8_CURRENT.GDT 6/29/18 09:21Braun Project B1805858 GEOTECHNICAL EVALUATION Nelson Properties 7141 Galpin Boulevard Chanhassen, Minnesota qp tsf MC %Symbol Elev. feet 980.8 Depth feet 0.0 4 12 11 12 13 13 3/432 30 OL CL CL ORGANIC CLAY, dark brown, moist. (Topsoil) LEAN CLAY with SAND, trace Gravel, brown, moist, soft to stiff. (Glacial Till) SANDY LEAN CLAY, trace Gravel, brown, moist, stiff. (Glacial Till) With seams of Silty Sand from 10 to 14 feet. END OF BORING. Water not observed while drilling. Boring immediately backfilled. 1002.4 993.9 988.4 0.5 9.0 14.5 6/21/18 1" = 4'DATE:SCALE:DRILLER: Tests or NotesWL ST-2 page 1 of 1 3 1/4" HSA, AutohammerM. Takada L O G O F B O R I N G (See Descriptive Terminology sheet for explanation of abbreviations)LOCATION: See attached sketch. (Soil-ASTM D2488 or D2487, Rock-USACE EM1110-1-2908) Description of Materials ST-2 METHOD: BORING: BPF Braun Intertec CorporationB1805858LOG OF BORING N:\GINT\PROJECTS\AX PROJECTS\2018\05858.GPJ BRAUN_V8_CURRENT.GDT 6/29/18 09:21Braun Project B1805858 GEOTECHNICAL EVALUATION Nelson Properties 7141 Galpin Boulevard Chanhassen, Minnesota qp tsf MC %Symbol Elev. feet 1002.9 Depth feet 0.0 5 13 6 12 10 10 1 1/4 16 19 FILL OL SC CL CL FILL: Lean Clay, trace organics, brown and black, moist. ORGANIC CLAY, black, moist. (Topsoil) CLAYEY SAND, trace Gravel, brown, moist, stiff. (Glacial Till) SANDY LEAN CLAY, seams of Silty Sand, trace Gravel, light grayish brown, moist, medium. (Glacial Till) SANDY LEAN CLAY, trace Gravel, brown, moist, stiff. (Glacial Till) END OF BORING. Water not observed while drilling. Boring immediately backfilled. 968.3 966.1 963.1 960.1 955.6 1.8 4.0 7.0 10.0 14.5 6/21/18 1" = 4'DATE:SCALE:DRILLER: Tests or NotesWL ST-3 page 1 of 1 3 1/4" HSA, AutohammerM. Takada L O G O F B O R I N G (See Descriptive Terminology sheet for explanation of abbreviations)LOCATION: See attached sketch. (Soil-ASTM D2488 or D2487, Rock-USACE EM1110-1-2908) Description of Materials ST-3 METHOD: BORING: BPF Braun Intertec CorporationB1805858LOG OF BORING N:\GINT\PROJECTS\AX PROJECTS\2018\05858.GPJ BRAUN_V8_CURRENT.GDT 6/29/18 09:21Braun Project B1805858 GEOTECHNICAL EVALUATION Nelson Properties 7141 Galpin Boulevard Chanhassen, Minnesota qp tsf MC %Symbol Elev. feet 970.1 Depth feet 0.0 5 8 7 12 11 11 3/4 2 20 19 OL CL CL CL ORGANIC CLAY, black, moist. (Topsoil) SANDY LEAN CLAY, trace Gravel, seams of Silty Sand, grayish brown, moist, medium. (Glacial Till) SANDY LEAN CLAY, trace Gravel, brown, moist, medium. (Glacial Till) SANDY LEAN CLAY, trace Gravel, gray, moist, stiff. (Glacial Till) END OF BORING. Water not observed while drilling. Boring immediately backfilled. 962.4 959.4 954.4 948.9 1.0 4.0 9.0 14.5 6/21/18 1" = 4'DATE:SCALE:DRILLER: Tests or NotesWL ST-4 page 1 of 1 3 1/4" HSA, AutohammerM. Takada L O G O F B O R I N G (See Descriptive Terminology sheet for explanation of abbreviations)LOCATION: See attached sketch. (Soil-ASTM D2488 or D2487, Rock-USACE EM1110-1-2908) Description of Materials ST-4 METHOD: BORING: BPF Braun Intertec CorporationB1805858LOG OF BORING N:\GINT\PROJECTS\AX PROJECTS\2018\05858.GPJ BRAUN_V8_CURRENT.GDT 6/29/18 09:21Braun Project B1805858 GEOTECHNICAL EVALUATION Nelson Properties 7141 Galpin Boulevard Chanhassen, Minnesota qp tsf MC %Symbol Elev. feet 963.4 Depth feet 0.0 6 10 10 16 13 12 1 1/228 19 OL CL CL CL ORGANIC CLAY, black, moist. (Topsoil) LEAN CLAY, grayish brown, moist, medium. (Glacial Till) SANDY LEAN CLAY, trace Gravel, brown, moist, stiff to very stiff. (Glacial Till) With seams of Silty Sand at 10 feet. SANDY LEAN CLAY, trace Gravel, gray, moist, stiff. (Glacial Till) END OF BORING. Water not observed while drilling. Boring immediately backfilled. 978.3 976.8 968.8 966.3 2.5 4.0 12.0 14.5 6/21/18 1" = 4'DATE:SCALE:DRILLER: Tests or NotesWL ST-5 page 1 of 1 3 1/4" HSA, AutohammerM. Takada L O G O F B O R I N G (See Descriptive Terminology sheet for explanation of abbreviations)LOCATION: See attached sketch. (Soil-ASTM D2488 or D2487, Rock-USACE EM1110-1-2908) Description of Materials ST-5 METHOD: BORING: BPF Braun Intertec CorporationB1805858LOG OF BORING N:\GINT\PROJECTS\AX PROJECTS\2018\05858.GPJ BRAUN_V8_CURRENT.GDT 6/29/18 09:21Braun Project B1805858 GEOTECHNICAL EVALUATION Nelson Properties 7141 Galpin Boulevard Chanhassen, Minnesota qp tsf MC %Symbol Elev. feet 980.8 Depth feet 0.0 2 3 3 5 2 5 6 1/4 1/4 1/2 1 1/2 An open triangle in the water level (WL) column indicates the depth at which groundwater was observed while drilling. Groundwater levels fluctuate.24 25 FILL CL ORGANIC CLAY, black, moist. (Topsoil or Topsoil Fill) SANDY LEAN CLAY, trace Gravel, seams of Silty Sand, gray, moist to wet. (Glacial Till) With seams of Poorly Graded Sand at 19 feet. END OF BORING. Water observed at 14 feet while drilling. Water observed at 6 feet with 19 1/2 feet of hollow-stem auger in the ground. Boring immediately backfilled with bentonite grout. 982.4 970.4 9.0 21.0 6/21/18 1" = 4'DATE:SCALE:DRILLER: Tests or NotesWL ST-6 page 1 of 1 3 1/4" HSA, AutohammerM. Takada L O G O F B O R I N G (See Descriptive Terminology sheet for explanation of abbreviations)LOCATION: See attached sketch. (Soil-ASTM D2488 or D2487, Rock-USACE EM1110-1-2908) Description of Materials ST-6 METHOD: BORING: BPF Braun Intertec CorporationB1805858LOG OF BORING N:\GINT\PROJECTS\AX PROJECTS\2018\05858.GPJ BRAUN_V8_CURRENT.GDT 6/29/18 09:21Braun Project B1805858 GEOTECHNICAL EVALUATION Nelson Properties 7141 Galpin Boulevard Chanhassen, Minnesota qp tsf MC %Symbol Elev. feet 991.4 Depth feet 0.0 6 12 13 15 17 17 1 1/219 18 OL CL ORGANIC CLAY, with roots, black, moist. (Topsoil) SANDY LEAN CLAY, trace Gravel, with seams of Silty Sand, brown, moist, medium to very stiff. (Glacial Till) END OF BORING. Water not observed while drilling. Boring immediately backfilled. 1017.2 1003.7 1.0 14.5 6/21/18 1" = 4'DATE:SCALE:DRILLER: Tests or NotesWL ST-7 page 1 of 1 3 1/4" HSA, AutohammerM. Takada L O G O F B O R I N G (See Descriptive Terminology sheet for explanation of abbreviations)LOCATION: See attached sketch. (Soil-ASTM D2488 or D2487, Rock-USACE EM1110-1-2908) Description of Materials ST-7 METHOD: BORING: BPF Braun Intertec CorporationB1805858LOG OF BORING N:\GINT\PROJECTS\AX PROJECTS\2018\05858.GPJ BRAUN_V8_CURRENT.GDT 6/29/18 09:21Braun Project B1805858 GEOTECHNICAL EVALUATION Nelson Properties 7141 Galpin Boulevard Chanhassen, Minnesota qp tsf MC %Symbol Elev. feet 1018.2 Depth feet 0.0 6 4 3 7 7 7 1 1/4 1/4 1/4 22 28 26 OL CL CL CL CL ORGANIC CLAY, black, moist. (Topsoil) LEAN CLAY with SAND, trace Gravel, grayish brown, moist, medium. (Glacial Till) LEAN CLAY, grayish brown, moist, soft. (Glacial Till) SANDY LEAN CLAY, trace Gravel, grayish brown, moist, soft to medium. (Glacial Till) SANDY LEAN CLAY, trace Gravel, gray, moist, medium. (Glacial Till) END OF BORING. Water not observed while drilling. Boring immediately backfilled. 1000.1 997.3 994.3 990.3 986.8 1.2 4.0 7.0 11.0 14.5 6/21/18 1" = 4'DATE:SCALE:DRILLER: Tests or NotesWL ST-8 page 1 of 1 3 1/4" HSA, AutohammerM. Takada L O G O F B O R I N G (See Descriptive Terminology sheet for explanation of abbreviations)LOCATION: See attached sketch. (Soil-ASTM D2488 or D2487, Rock-USACE EM1110-1-2908) Description of Materials ST-8 METHOD: BORING: BPF Braun Intertec CorporationB1805858LOG OF BORING N:\GINT\PROJECTS\AX PROJECTS\2018\05858.GPJ BRAUN_V8_CURRENT.GDT 6/29/18 09:21Braun Project B1805858 GEOTECHNICAL EVALUATION Nelson Properties 7141 Galpin Boulevard Chanhassen, Minnesota qp tsf MC %Symbol Elev. feet 1001.3 Depth feet 0.0 Descriptive Terminology of Soil Based on Standards ASTM D 2487-11/2488-09a (Unified Soil Classification System) Group Symbol Group NameB Cu ≥ 4 and 1 ≤ Cc ≤ 3D GW Well-graded gravelE Cu < 4 and/or (Cc < 1 or Cc > 3)D GP Poorly graded gravelE Fines classify as ML or MH GM Silty gravelE F G Fines Classify as CL or CH GC Clayey gravelE F G Cu ≥ 6 and 1 ≤ Cc ≤ 3D SW Well-graded sandI Cu < 6 and/or (Cc < 1 or Cc > 3)D SP Poorly graded sandI Fines classify as ML or MH SM Silty sandF G I Fines classify as CL or CH SC Clayey sandF G I CL Lean clayK L M PI < 4 or plots below "A" lineJ ML SiltK L M Organic OL CH Fat clayK L M MH Elastic siltK L M Organic OH PT Peat Criteria for Assigning Group Symbols and Group Names Using Laboratory TestsA Soil Classification Coarse-grained Soils (more than 50% retained on No. 200 sieve)Fine-grained Soils (50% or more passes the No. 200 sieve) Sands (50% or more coarse fraction passes No. 4 sieve) Clean Gravels (Less than 5% finesC) Gravels with Fines (More than 12% finesC) Clean Sands (Less than 5% finesH) Sands with Fines (More than 12% finesH) Gravels (More than 50% of coarse fraction retained on No. 4 sieve) Highly Organic Soils Silts and Clays (Liquid limit less than 50) Silts and Clays (Liquid limit 50 or more) Primarily organic matter, dark in color, and organic odor Inorganic Inorganic PI > 7 and plots on or above "A" lineJ PI plots on or above "A" line PI plots below "A" line Liquid Limit −oven dried Liquid Limit −not dried <0.75 Organic clay K L M N Organic silt K L M O Liquid Limit −oven dried Liquid Limit −not dried <0.75 Organic clay K L M P Organic silt K L M Q Particle Size Identification Boulders.............. over 12" Cobbles................ 3" to 12" Gravel Coarse............. 3/4" to 3" (19.00 mm to 75.00 mm) Fine................. No. 4 to 3/4" (4.75 mm to 19.00 mm) Sand Coarse.............. No. 10 to No. 4 (2.00 mm to 4.75 mm) Medium........... No. 40 to No. 10 (0.425 mm to 2.00 mm) Fine.................. No. 200 to No. 40 (0.075 mm to 0.425 mm) Silt........................ No. 200 (0.075 mm) to .005 mm Clay...................... < .005 mm Relative ProportionsL, M trace............................. 0 to 5% little.............................. 6 to 14% with.............................. ≥ 15% Inclusion Thicknesses lens............................... 0 to 1/8" seam............................. 1/8" to 1" layer.............................. over 1" Apparent Relative Density of Cohesionless Soils Very loose ..................... 0 to 4 BPF Loose ............................ 5 to 10 BPF Medium dense.............. 11 to 30 BPF Dense............................ 31 to 50 BPF Very dense.................... over 50 BPF A.Based on the material passing the 3-inch (75-mm) sieve. B.If field sample contained cobbles or boulders, or both, add "with cobbles or boulders, or both" to group name. C. Gravels with 5 to 12% fines require dual symbols: GW-GM well-graded gravel with silt GW-GC well-graded gravel with clay GP-GM poorly graded gravel with silt GP-GC poorly graded gravel with clay D.Cu = D60 / D10 Cc = 𝐷30 2 / (𝐷10 𝑥𝐷60) E.If soil contains ≥ 15% sand, add "with sand" to group name. F.If fines classify as CL-ML, use dual symbol GC-GM or SC-SM. G. If fines are organic, add "with organic fines" to group name. H. Sands with 5 to 12%fines require dual symbols: SW-SM well-graded sand with silt SW-SC well-graded sand with clay SP-SM poorly graded sand with silt SP-SC poorly graded sand with clay I.If soil contains ≥ 15% gravel, add "with gravel" to group name. J. If Atterberg limits plot in hatched area, soil is CL-ML, silty clay. K.If soil contains 15 to < 30% plus No. 200, add "with sand" or "with gravel", whichever is predominant. L. If soil contains ≥ 30% plus No. 200, predominantly sand, add “sandy” to group name. M. If soil contains ≥ 30% plus No. 200 predominantly gravel, add “gravelly” to group name. N. PI ≥ 4 and plots on or above “A” line. O. PI < 4 or plots below “A” line. P. PI plots on or above “A” line. Q.PI plots below “A” line Laboratory Tests DD Dry Density,pcf OC Organic content, %PL Plastic limit, % WD Wet Density, pcf qp Pocket penetrometer strength LL Liquid limit, % P200 % Passing #200 sieve MC Moisture conent, %PI Plasticity Index, % Consistency of Blows Approximate Unconfined Cohesive Soils Per Foot Compressive Strength Very soft................... 0 to 1 BPF................... < 1/4 tsf Soft........................... 2 to 4 BPF................... 1/4 to 1/2 tsf Medium.................... 5 to 8 BPF .................. 1/2 to 1 tsf Stiff........................... 9 to 15 BPF................. 1 to 2 tsf Very Stiff................... 16 to 30 BPF............... 2 to 4 tsf Hard.......................... over 30 BPF................ > 4 tsf Drilling Notes: BPF: Numbers indicate blows per foot recorded in standard penetration test, also known as “N” value. The sampler was set 6 inches into undisturbed soil below the hollow-stem auger. Driving resistances were then counted for second and third 6-inch increments, and added to get BPF. Partial Penetration:If the sampler cannot be driven the full 12 inches beyond the initial 6-inch set, the number of blows for that partial penetration is shown as "No./X" (i.e., 50/2"). If the sampler cannot be advanced beyond the initial 6-inch set, the depth of penetration will be recorded in the Notes column as "No. to set X" (i.e., 50 to set 4"). WH: WH indicates the sampler penetrated soil under weight of hammer and rods alone; driving not required. WR: WR indicates the sampler penetrated soil under weight of rods alone; hammer weight and driving not required. WL: WL indicates the water level measured by the drillers either while drilling or following drilling. Moisture Content: Dry:Absence of moisture, dusty, dry to the touch. Moist: Damp but no visible water. Wet: Visible free water, usually soil is below water table. 5/2017 Braun Intertec Corporation 11001 Hampshire Avenue S Minneapolis, MN 55438 Phone: 952.995.2000 Fax: 952.995.2020 Web: braunintertec.com AA/EOE December 6, 2019 Project B1805858.00 Mr. Mark Bode Lennar Corporation 16305 36th Avenue North, Suite 600 Plymouth, MN 55446 Re: Results of Double-Ring Infiltrometer Testing The Park Residential Development (Nelson Property) 7141 Galpin Boulevard Chanhassen, Minnesota Dear Mr. Bode: We are pleased to present the results of the requested double-ring infiltrometer (DRI) testing completed at the above referenced site in Chanhassen, Minnesota. We completed the requested tests in general accordance with ASTM International (ASTM) D 3385; Standard Test Method for Infiltration Rate of Soils in Field Using a Double-Ring Infiltrometer. We also completed observations on a number of test pit excavations that were also completed within the proposed stormwater/infiltration basins. The two basins where the testing and test pits were completed were noted as Basins 100 and 200. The DRI testing and test pit observations were performed in the field by Braun Intertec Corporation personnel on November 25, 2018, at the approximate locations identified on the attached sketches. Excavations to reach test elevations were performed by the Contractor provided by the owner. Upon completion of testing, the excavations were backfilled with excavated spoils and bucket compacted. DRI Test Results The results of the DRI testing performed, including graphical representation, are attached to this report letter. To summarize the results, no infiltration was noted during any of the three tests. Two of the test locations, DRI-1.2 and DRI-2.2, had groundwater coming up into the excavation. Only one test was able to be performed in Basin 100 as two of the other proposed DRI test locations filled up with water prior to being setup, and tests were unable to be completed. Please note, soil infiltration rates will vary with soil moisture content, the introduction of fine-grained soils, topsoil, filter media, seasonal changes, compaction of the subgrade, or with changes in localized groundwater levels. This test does not constitute a review of site suitability for infiltration or evaluate the potential impacts, if any, from infiltration of large amounts of stormwater. We also note that topsoil, filter media or compaction of the subgrade can limit the effectiveness of soil infiltration. WETLAND 1 OUTLOT I 00-ENG-118100-SHEET-GRAD 20PRELIMINARY GRADING PLAN I hereby certify that this plan was prepared by me or under my direct supervision and that I am a duly Licensed Professional Engineer under the laws of the State of Minnesota c 39OFTHE PARK CHANHASSEN, MINNESOTA LENNAR 16305 36TH AVENUE NORTH 12-05-18 PJC/BNM BNM/NCR Name Reg. No.Date Revisions 1. 2-28-2019 City Comments Date Designed Drawn 2018 Pioneer Engineering, P.A. Mendota Heights, MN 55120 2422 Enterprise Drive (651) 681-1914 Fax: 681-9488www.pioneereng.com LANDSCAPE ARCHITECTSLAND SURVEYORSLAND PLANNERSCIVIL ENGINEERS 12-05-2018 Paul J. Cherne PLYMOUTH, MINNESOTA 5544619860 2. 4-2-2019 City Comments3. 5-20-2019 City Comments WETLAND 2 WETLAND 1 OUTLOT G OUTLOT H 00-ENG-118100-SHEET-GRAD 21PRELIMINARY GRADING PLAN I hereby certify that this plan was prepared by me or under my direct supervision and that I am a duly Licensed Professional Engineer under the laws of the State of Minnesota c 39OFTHE PARK CHANHASSEN, MINNESOTA LENNAR 16305 36TH AVENUE NORTH 12-05-18 PJC/BNM BNM/NCR Name Reg. No.Date Revisions 1. 2-28-2019 City Comments Date Designed Drawn 2018 Pioneer Engineering, P.A. Mendota Heights, MN 55120 2422 Enterprise Drive (651) 681-1914 Fax: 681-9488www.pioneereng.com LANDSCAPE ARCHITECTSLAND SURVEYORSLAND PLANNERSCIVIL ENGINEERS 12-05-2018 Paul J. Cherne PLYMOUTH, MINNESOTA 5544619860 2. 4-2-2019 City Comments3. 5-20-2019 City Comments Results of Double Ring Infiltrometer Testing (ASTM D 3385)- Mariotte Tube Method Test Number:DRI-1.2 Project Description: Nelson Property Project Number:B1805858.00 Test Location: Date: November 25, 2019 Liquid used:Potable Water Test Elevation:969 Inner Ring Area:113 square inches Ground Temperature Fo: 34 Outer Ring Area:452 square inches Water Temperature Fo:47 Water depth Inner Ring (in):3 Test performed by:Trey Krautkremer Water depth annular Ring (in):3 Moisture Content of soil at test depth before test:30% Weather:36 Degrees F, Clear Percent Fines passing a 200 sieve on soil at test depth:54% Time Infiltration Rate (in/hr)Depth below bottom of test Soil Profile 30 0.0 0-6 inches 60 0.0 6-12 inches 90 0.0 12-18 inches 120 0.0 18-24 inches 150 0.0 24-30 inches 180 0.0 30-36 inches 210 0.0 240 0.0 Groundwater depth 0" 0.0 0.0 Average Infiltration Rate of Inner Ring Over Entire Test (in/hr) Steady State Infiltration Rate of Inner Ring Over Last 4 intervals (in/hr) See Sketch Sandy Lean Clay, Light Brown, Wet 0.0 0.5 1.0 1.5 0 15 30 45 60 75 90 105 120 135 150 165 180 195 210 225 240 255Infiltration Rate (in/hr)Time (minutes) Inner Ring Infiltration Rate vs. Time Test performed by Braun Intertec personnel in general accordance with test method ASTM D 3385. Results of Double Ring Infiltrometer Testing (ASTM D 3385)- Mariotte Tube Method Test Number:DRI-2.2 Project Description: Nelson Property Project Number:B1805858.00 Test Location: Date: November 25, 2019 Liquid used:Potable Water Test Elevation:969 Inner Ring Area:113 square inches Ground Temperature Fo: 34 Outer Ring Area:452 square inches Water Temperature Fo:47 Water depth Inner Ring (in):3 Test performed by:Trey Krautkremer Water depth annular Ring (in):3 Moisture Content of soil at test depth before test:33% Weather:36 Degrees F, Clear Percent Fines passing a 200 sieve on soil at test depth:53% Time Infiltration Rate (in/hr)Depth below bottom of test Soil Profile 30 0.0 0-6 inches 60 0.0 6-12 inches 90 0.0 12-18 inches 120 0.0 18-24 inches 150 0.0 24-30 inches 180 0.0 30-36 inches 210 0.0 240 0.0 Groundwater depth 0" 0.0 0.0 Average Infiltration Rate of Inner Ring Over Entire Test (in/hr) Steady State Infiltration Rate of Inner Ring Over Last 4 intervals (in/hr) See Sketch Sandy Lean Clay, Light Brown, Wet 0.0 0.5 1.0 1.5 0 15 30 45 60 75 90 105 120 135 150 165 180 195 210 225 240 255Infiltration Rate (in/hr)Time (minutes) Inner Ring Infiltration Rate vs. Time Test performed by Braun Intertec personnel in general accordance with test method ASTM D 3385. Results of Double Ring Infiltrometer Testing (ASTM D 3385)- Mariotte Tube Method Test Number:DRI-3.2 Project Description: Nelson Property Project Number:B1805858.00 Test Location: Date: November 25, 2019 Liquid used:Potable Water Test Elevation:964 Inner Ring Area:113 square inches Ground Temperature Fo: 34 Outer Ring Area:452 square inches Water Temperature Fo:47 Water depth Inner Ring (in):3 Test performed by:Trey Krautkremer Water depth annular Ring (in):3 Moisture Content of soil at test depth before test:19% Weather:36 Degrees F, Clear Percent Fines passing a 200 sieve on soil at test depth:42% Time Infiltration Rate (in/hr)Depth below bottom of test Soil Profile 30 0.0 0-6 inches 60 0.0 6-12 inches 90 0.0 12-18 inches 120 0.0 18-24 inches 150 0.0 24-30 inches 180 0.0 30-36 inches 210 0.0 240 0.0 Groundwater depth Not Encountered 0.0 0.0 Average Infiltration Rate of Inner Ring Over Entire Test (in/hr) Steady State Infiltration Rate of Inner Ring Over Last 4 intervals (in/hr) See Sketch Clayey sand, Light Brown, Moist 0.0 0.5 1.0 1.5 0 15 30 45 60 75 90 105 120 135 150 165 180 195 210 225 240 255Infiltration Rate (in/hr)Time (minutes) Inner Ring Infiltration Rate vs. Time Test performed by Braun Intertec personnel in general accordance with test method ASTM D 3385. Elev./ Depth ft 985.4 1.3 973.7 13.0 WaterLevelDescription of Materials (Soil-ASTM D2488 or 2487; Rock-USACE EM 1110-1-2908) CLAYEY SAND (SC), trace roots, and fibers, black, moist (TOPSOIL) SANDY LEAN CLAY (CL), brown, moist (GLACIAL TILL) END OF TEST PIT Test pit then backfilled with spoils 5 10 SampleSample Blows Recovery qₚ tsf MC %Tests or Remarks Water not observed while excavating. LOG OF TEST PIT See Descriptive Terminology sheet for explanation of abbreviations Project Number B1805858.00 Factual Report Nelson Property 7141 Galpin Boulevard Chanhassen, Minnesota TEST PIT:TP-1 LOCATION: See attached sketch NORTHING:EASTING: EXCAVATOR:Doboszenski & Sons LOGGED BY:R. Braun START DATE:11/25/19 END DATE:11/25/19 SURFACE ELEVATION:986.7 ft RIG:Excavator SURFACING:Woods/brush WEATHER:Partly sunny, 40° B1805858.00 Braun Intertec Corporation TP-1 page 1 of 1 Elev./ Depth ft 974.5 2.0 970.5 6.0 WaterLevelDescription of Materials (Soil-ASTM D2488 or 2487; Rock-USACE EM 1110-1-2908) CLAYEY SAND (SC), trace roots, and fibers, black, moist (TOPSOIL) SANDY LEAN CLAY (CL), brown, moist (GLACIAL TILL) END OF TEST PIT Test pit then backfilled with spoils 5 10 SampleSample Blows Recovery qₚ tsf MC %Tests or Remarks Water not observed while excavating. LOG OF TEST PIT See Descriptive Terminology sheet for explanation of abbreviations Project Number B1805858.00 Factual Report Nelson Property 7141 Galpin Boulevard Chanhassen, Minnesota TEST PIT:TP-2 LOCATION: See attached sketch NORTHING:EASTING: EXCAVATOR:Doboszenski & Sons LOGGED BY:R. Braun START DATE:11/25/19 END DATE:11/25/19 SURFACE ELEVATION:976.5 ft RIG:Excavator SURFACING:Woods/brush WEATHER:Partly sunny, 40° B1805858.00 Braun Intertec Corporation TP-2 page 1 of 1 Elev./ Depth ft 971.0 3.0 967.0 7.0 WaterLevelDescription of Materials (Soil-ASTM D2488 or 2487; Rock-USACE EM 1110-1-2908) CLAYEY SAND (SC), trace roots, and fibers, black, moist (TOPSOIL) SANDY LEAN CLAY (CL), brown, moist to wet (GLACIAL TILL) END OF TEST PIT Test pit then backfilled with spoils 5 10 SampleSample Blows Recovery qₚ tsf MC %Tests or Remarks Water observed at 7.0 feet while excavating. LOG OF TEST PIT See Descriptive Terminology sheet for explanation of abbreviations Project Number B1805858.00 Factual Report Nelson Property 7141 Galpin Boulevard Chanhassen, Minnesota TEST PIT:TP-3 LOCATION: See attached sketch NORTHING:EASTING: EXCAVATOR:Doboszenski & Sons LOGGED BY:R. Braun START DATE:11/25/19 END DATE:11/25/19 SURFACE ELEVATION:974.0 ft RIG:Excavator SURFACING:Woods/brush WEATHER:Partly sunny, 40° B1805858.00 Braun Intertec Corporation TP-3 page 1 of 1 Elev./ Depth ft 982.4 0.7 980.1 3.0 969.1 14.0 WaterLevelDescription of Materials (Soil-ASTM D2488 or 2487; Rock-USACE EM 1110-1-2908) PAVEMENT, 4 inches of bituminous over 4 inches of aggregate base CLAYEY SAND (SC), trace roots, and fibers, black, moist (TOPSOIL FILL) SANDY LEAN CLAY (CL), brown, moist (GLACIAL TILL) END OF TEST PIT Test pit then backfilled with spoils 5 10 SampleSample Blows Recovery qₚ tsf MC %Tests or Remarks Water not observed while excavating. LOG OF TEST PIT See Descriptive Terminology sheet for explanation of abbreviations Project Number B1805858.00 Factual Report Nelson Property 7141 Galpin Boulevard Chanhassen, Minnesota TEST PIT:TP-4 LOCATION: See attached sketch NORTHING:EASTING: EXCAVATOR:Doboszenski & Sons LOGGED BY:R. Braun START DATE:11/26/19 END DATE:11/26/19 SURFACE ELEVATION:983.1 ft RIG:Excavator SURFACING:Woods/brush WEATHER:Partly sunny, 40° B1805858.00 Braun Intertec Corporation TP-4 page 1 of 1 Elev./ Depth ft 967.2 2.0 962.2 7.0 WaterLevelDescription of Materials (Soil-ASTM D2488 or 2487; Rock-USACE EM 1110-1-2908) CLAYEY SAND (SC), trace roots, and fibers, black, moist (TOPSOIL) SANDY LEAN CLAY (CL), brown, moist (GLACIAL TILL) END OF TEST PIT Test pit then backfilled with spoils 5 10 SampleSample Blows Recovery qₚ tsf MC %Tests or Remarks Water not observed while excavating. LOG OF TEST PIT See Descriptive Terminology sheet for explanation of abbreviations Project Number B1805858.00 Factual Report Nelson Property 7141 Galpin Boulevard Chanhassen, Minnesota TEST PIT:TP-5 LOCATION: See attached sketch NORTHING:EASTING: EXCAVATOR:Doboszenski & Sons LOGGED BY:R. Braun START DATE:11/25/19 END DATE:11/25/19 SURFACE ELEVATION:969.2 ft RIG:Excavator SURFACING:Woods/brush WEATHER:Partly sunny, 40° B1805858.00 Braun Intertec Corporation TP-5 page 1 of 1 Elev./ Depth ft 964.6 2.5 959.1 8.0 WaterLevelDescription of Materials (Soil-ASTM D2488 or 2487; Rock-USACE EM 1110-1-2908) CLAYEY SAND (SC), trace roots, and fibers, black, moist (TOPSOIL) POORLY GRADED SAND with SILT (SP-SM), fine to medium-grained Sand, trace Gravel, gray, moist (ALLUVIUM) END OF TEST PIT Test pit then backfilled with spoils 5 10 SampleSample Blows Recovery qₚ tsf MC %Tests or Remarks Water not observed while excavating. LOG OF TEST PIT See Descriptive Terminology sheet for explanation of abbreviations Project Number B1805858.00 Factual Report Nelson Property 7141 Galpin Boulevard Chanhassen, Minnesota TEST PIT:TP-6 LOCATION: See attached sketch NORTHING:EASTING: EXCAVATOR:Doboszenski & Sons LOGGED BY:R. Braun START DATE:11/25/19 END DATE:11/25/19 SURFACE ELEVATION:967.1 ft RIG:Excavator SURFACING:Woods/brush WEATHER:Partly sunny, 40° B1805858.00 Braun Intertec Corporation TP-6 page 1 of 1 Elev./ Depth ft 965.7 1.3 961.0 6.0 WaterLevelDescription of Materials (Soil-ASTM D2488 or 2487; Rock-USACE EM 1110-1-2908) CLAYEY SAND (SC), trace roots, and fibers, black, moist (TOPSOIL) POORLY GRADED SAND with SILT (SP-SM), fine to medium-grained Sand, trace Gravel, gray, moist to wet (ALLUVIUM) END OF TEST PIT Test pit then backfilled with spoils 5 10 SampleSample Blows Recovery qₚ tsf MC %Tests or Remarks Water observed at 6.0 feet while excavating. LOG OF TEST PIT See Descriptive Terminology sheet for explanation of abbreviations Project Number B1805858.00 Factual Report Nelson Property 7141 Galpin Boulevard Chanhassen, Minnesota TEST PIT:TP-7 LOCATION: See attached sketch NORTHING:EASTING: EXCAVATOR:Doboszenski & Sons LOGGED BY:R. Braun START DATE:11/25/19 END DATE:11/25/19 SURFACE ELEVATION:967.0 ft RIG:Excavator SURFACING:Woods/brush WEATHER:Partly sunny, 40° B1805858.00 Braun Intertec Corporation TP-7 page 1 of 1 Elev./ Depth ft 964.0 3.0 960.0 7.0 WaterLevelDescription of Materials (Soil-ASTM D2488 or 2487; Rock-USACE EM 1110-1-2908) CLAYEY SAND (SC), trace roots, and fibers, black, moist (TOPSOIL) SILTY SAND (SM), fine to medium-grained Sand, trace Gravel, gray, moist to wet (ALLUVIUM) END OF TEST PIT Test pit then backfilled with spoils 5 10 SampleSample Blows Recovery qₚ tsf MC %Tests or Remarks Water observed at 7.0 feet while excavating. LOG OF TEST PIT See Descriptive Terminology sheet for explanation of abbreviations Project Number B1805858.00 Factual Report Nelson Property 7141 Galpin Boulevard Chanhassen, Minnesota TEST PIT:TP-8 LOCATION: See attached sketch NORTHING:EASTING: EXCAVATOR:Doboszenski & Sons LOGGED BY:R. Braun START DATE:11/25/19 END DATE:11/25/19 SURFACE ELEVATION:967.0 ft RIG:Excavator SURFACING:Woods/brush WEATHER:Partly sunny, 40° B1805858.00 Braun Intertec Corporation TP-8 page 1 of 1 INF-2 Haugo GeoTechnical Services, LLC 2825 Cedar Avenue S. Minneapolis, MN 55407 Figure #: 1 Drawn By: RD Date: 8/18/20 Scale: None Project #: 20-0700 Infiltration Test Location Sketch 6900 Lucy Ridge Lane Chanhassen, Minnesota Legend Approx. Infiltration Test Location INF-1 Disclaimer: Map and parcel data are believed to be accurate, but accuracy is not guaranteed. This is not a legal document and should not be substituted for a title search, appraisal, survey, or for zoning verification. Constants Area cm2 Depth of Liquid (cm) Liquid Container Number Inner Ring 729 11.0 1 Elevation:Annular Space 2189 11.0 2 Liquid: Remarks Inner Ring Reading cm Maroitte Tube Flow (ml) Annular Space Reading cm Annular Space Marriotte Tube Flow (ml) Inner Infiltration Rate (Inch/h) Annular Infiltration Rate (Inch/h) Ground Temp Depth (cm) Temp at Depth (F) Weather conditions Etc... Hourly Inner Infiltration Rate (Inch/h) Start Test 8/17/2020 9:25 0:15 63.0 End Test 8/17/2020 9:40 0:15 n/a n/a Start Test 8/17/2020 9:40 0:15 63.0 End Test 8/17/2020 9:55 0:30 n/a n/a Start Test 8/17/2020 9:55 0:15 63.0 End Test 8/17/2020 10:10 0:45 n/a n/a Start Test 8/17/2020 10:10 0:15 63.0 End Test 8/17/2020 10:25 1:00 n/a n/a Start Test 8/17/2020 10:25 0:15 63.0 End Test 8/17/2020 10:40 1:15 n/a n/a Start Test 8/17/2020 10:40 0:15 63.0 End Test 8/17/2020 10:55 1:30 n/a n/a Start Test 8/17/2020 10:55 0:15 63.0 End Test 8/17/2020 11:10 1:45 n/a n/a Start Test 8/17/2020 11:10 0:15 63.0 End Test 8/17/2020 11:25 2:00 n/a n/a Start Test 8/17/2020 11:25 0:15 63.0 End Test 8/17/2020 11:40 2:15 n/a n/a Start Test 8/17/2020 11:40 0:15 63.0 End Test 8/17/2020 11:55 2:30 n/a n/a Start Test 8/17/2020 11:55 0:15 63.0 End Test 8/17/2020 12:10 2:45 n/a n/a Start Test 8/17/2020 12:10 0:15 63.0 End Test 8/17/2020 12:25 3:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 9:25 End Test 12:25 3:00 NG Water 0.00 0.00 0.00 2.27 Total Infiltration in Inches (3 Hour Test) 0.00 73 71 71 Final Results 21 24 71 71 73 23 18 0.00 20 0.00 60 2.16 0.00 60 3.60 3.60 4.32 3.60 5.0 60 4.32 4.68 60 60 5.0 60 5.0 5.0 5.0 60 73 75.0 60 3.60 5.0 22 0.00 0.00 19 0.00 0.00 0.00 0.00170.00 0.00 5.0 9 1200 5000 2.59 0.00 0.00 0.00 0.00 13 0.00 0.00 16 5.0 8 1100 6000 2.38 0.0015 11 1000 5000 10 1000 0.0014 2.16 5000 2.16 12 1000 5000 2.16 7 1500 5500 3.24 3.96 6 700 6000 1.51 5 700 6500 1.51 4 200 7000 3 200 7000 0.43 70 Sunny 605.04 5.0 60 5.0 5.04 5.0 60 70 Sunny5.04 7000 0.22 1 600 9000 1.30 100 0.43 Infiltrometer Recording Chart Marriotte Tube Volume 3000 10000 Project Identification:20-0700 Lucy Ridge Lane Soil Type: Test Location: 0"-36" SPSM, Lt Brn, MedGrain. Gravel at 8". Moist at 14" 44" below existing gradeINF-1 Trial # 605.0 Tested By: Penetration Depth of Outer Ring:Depth to water table:3 inches Start / End Date MM/DD/YY Time HR:MIN Elapsed Time Chg/(Total) Min Not Encountered at 36" Liquid level maintained using:( X ) Flow Valve ( ) Float Valve ( ) Mariotte Tubes Liquid Temp (F) Flow Readings Inner Infiltration Rate Ground Temperature 6.47 0.59 70 Sunny 70 Sunny2 9300 74000 1.67 4.44 5.02 0.00 0.00 Constants Area cm2 Depth of Liquid (cm) Liquid Container Number Inner Ring 729 11.0 1 Elevation:Annular Space 2189 11.0 2 Liquid: Remarks Inner Ring Reading cm Maroitte Tube Flow (ml) Annular Space Reading cm Annular Space Marriotte Tube Flow (ml) Inner Infiltration Rate (Inch/h) Annular Infiltration Rate (Inch/h) Ground Temp Depth (cm) Temp at Depth (F) Weather conditions Etc... Hourly Inner Infiltration Rate (Inch/h) Start Test 8/17/2020 10:25 0:15 63.0 End Test 8/17/2020 10:40 0:15 n/a n/a Start Test 8/17/2020 10:40 0:15 63.0 End Test 8/17/2020 10:55 0:30 n/a n/a Start Test 8/17/2020 10:55 0:15 63.0 End Test 8/17/2020 11:10 0:45 n/a n/a Start Test 8/17/2020 11:10 0:15 63.0 End Test 8/17/2020 11:25 1:00 n/a n/a Start Test 8/17/2020 11:25 0:15 63.0 End Test 8/17/2020 11:40 1:15 n/a n/a Start Test 8/17/2020 11:40 0:15 63.0 End Test 8/17/2020 11:55 1:30 n/a n/a Start Test 8/17/2020 11:55 0:15 63.0 End Test 8/17/2020 12:10 1:45 n/a n/a Start Test 8/17/2020 12:10 0:15 63.0 End Test 8/17/2020 12:25 2:00 n/a n/a Start Test 8/17/2020 12:25 0:15 63.0 End Test 8/17/2020 12:40 2:15 n/a n/a Start Test 8/17/2020 12:40 0:15 63.0 End Test 8/17/2020 12:55 2:30 n/a n/a Start Test 8/17/2020 12:55 0:15 63.0 End Test 8/17/2020 13:10 2:45 n/a n/a Start Test 8/17/2020 13:10 0:15 63.0 End Test 8/17/2020 13:25 3:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 0:00 63.0 End Test 0:00 n/a n/a Start Test 10:25 End Test 13:25 3:00 0.72 0.54 75 degrees, sunny 75 degrees, sunny2 4000 15000 0.72 0.90 2.16 0.00 0.00 Tested By: Penetration Depth of Outer Ring:Depth to water table:3 inches Start / End Date MM/DD/YY Time HR:MIN Elapsed Time Chg/(Total) Min Water Encountered at 22" below test elevation Liquid level maintained using:( X ) Flow Valve ( ) Float Valve ( ) Mariotte Tubes Liquid Temp (F) Flow Readings Inner Infiltration Rate Ground Temperature 1000 0.54 1 0 1000 0.00 250 1.08 Infiltrometer Recording Chart Marriotte Tube Volume 3000 10000 Project Identification:20-0700 Lucy Ridge Lane Soil Type: Test Location: 0-15" SC-SM, 15-37" SM Unknown, 52" below Ex GradeINF-2, SE woods Trial # 607.0 75 degrees, sunny 600.72 7.0 61 7.0 0.72 7.0 60 75 degrees, sunny1.08 5 500 1500 1.08 4 500 1500 3 250 1000 0.54 7 500 1500 1.08 1.08 6 500 1500 1.08 8 500 1500 1.08 0.0015 11 250 1000 10 250 0.0014 0.54 1000 0.54 12 250 1000 0.54 1500 0.54 0.00 0.00 0.00 0.00 13 0.00 0.00 16 7.0 62 0.72 7.0 22 0.00 0.00 19 0.00 0.00 0.00 0.00170.00 0.00 7.0 9 250 0.00 61 1.08 0.00 62 0.72 0.72 1.08 1.08 7.0 62 1.08 1.08 61 61 7.0 62 7.0 7.0 7.0 62 76 degrees, sunny 76 degrees, sunny 76 degrees, sunny 75 degrees, sunny 76 degrees, sunny Final Results 21 24 76 degrees, sunny 76 degrees, sunny 76 degrees, sunny 23 18 0.00 20 J. Miller Water 0.00 0.00 0.00 0.54 Total Infiltration in Inches (3 Hour Test) 0.00 The Bluffs at Lake Lucy Stormwater Management Plan Appendix C October 2020 www.ae2s.com Appendix C: HydroCAD Summaries (Pre- and Post- Development) Wetland 1 Wetland 2 300S 300 301S 301 400S Proposed CR 117 401S 401 500S 500 600S 600 700S 700 701S 701 800S 800 900S 900 BLL_PR101 BLL_PR101 BLL_PR102 BLL_PR102 BLL_PR103 BLL_PR103 BLL_PR104 BLL_PR104 BLL_PR105 BLL_PR105 BLL_PR106 BLL_PR106 BLL_PR107 BLL_PR107 BLL_PR108 BLL_PR108 BLL_PR109 BLL_PR109 BLL_PR110 BLL_PR110 BLL_PR111 BLL_PR111 BLL_PR112 BLL_PR112 BLL_PR113 BLL_PR113 BLL_PR201 BLL_PR201 BLL_PR202 BLL_PR202 BLL_PR203 BLL_PR203 BLL_PR204 BLL_PR204 BLL_PR205 BLL_PR205 BLL_PR206 BLL_PR206 BLL_PR301 BLL_PR301 BLL_PR302 BLL_PR302BLL_PR303 BLL_PR303 BLL_PR304 BLL_PR304 BLL_PR401 BLL_PR401 BLL_PR402 BLL_PR402 BLL_PR403 BLL_PR403 BLL_PR501 BLL_PR501 BLL_PR502 BLL_PR502 BLL_PR503 BLL_PR503 BLL_PR504 BLL_PR504 BLL_PR505 BLL_PR505 BLL_PR601 BLL_PR601 BL_PR207 BLL_PR207 LU 10-1 LU 10-1 LU 2-1 LU 2-1 LU 2-10 LU 2-10 LU 2-11 LU 2-11 LU 2-12 LU 2-12LU 2-13 LU 2-13 LU 2-14 LU 2-14 LU 2-15 LU 2-15 LU 2-16 LU 2-16 LU 2-18 LU 2-18 LU 2-2 LU 2-2 LU 2-3 LU 2-3 LU 2-4 LU 2-4 LU 2-5 LU 2-5 LU 2-7 LU 2-7 LU 2-8 LU 2-8 LU 2-9 LU 2-9 W11S W11 W12S W12 W13S W13 W14S W14 W6S W6 Pipe from W2 to W1 Pipe from Wetland 2 to Wetland 1 300P Pond with IESF 400P County pond with IESF 490 CB CB inlet 491P CB CB inlet 500P IESF 600P rain garden 800P rain garden 900P IESF BLL_CB11 Bluffs at Lake Lucy CB 11 BLL_CB13A Bluffs at Lake Lucy CB 13A BLL_CB22 Bluffs at Lake Lucy CB 22 BLL_CB23 Bluffs at Lake Lucy CB 23 BLL_CB24 Bluffs at Lake Lucy CB 24 BLL_CB25 Bluffs at Lake Lucy CB 25 BLL_CB26 Bluffs at Lake Lucy CB 26 BLL_CB27 Bluffs at Lake Lucy CB 27 BLL_CB28 Bluffs at Lake Lucy CB 28 BLL_CB30 Bluffs at Lake Lucy CB 30 BLL_CB37 Bluffs at Lake Lucy CB 37 BLL_CB9 Bluffs at Lake Lucy CB 9 BLL_Pond1 Bluffs at Lake Lucy Pond 1 BLL_Pond2 Bluffs at Lake Lucy Pond 2 CB-9 CB EX CB-9 GB_CB27 Bluffs at Lake Lucy CB 29 LUCY LAKE LUCY P-LU 2-1 P-LU 2-1 P-LU 2-10 P-LU 2-10 P-LU 2-11 P-LU 2-11 P-LU 2-12 P-LU 2-12 P-LU 2-13 P-LU 2-13 P-LU 2-2 P-LU 2-2 P-LU 2-3 P-LU 2-3 (LAKE HARRISON) P-LU 2-4 P-LU 2-4 P-LU 2-5 P-LU 2-5 P-LU 2-6 Wetland 11 P-LU 2-7 P-LU 2-7 P-LU 2-8 P-LU 2-8 P-LU 2-9 P-LU 2-9 P-LU-2-16 P-LU-2-16 P-LU10-1 P-LU 10-1 W12 Wetland 12 W13 Wetland 13 W14 Wetland 14 W2 Wetland 2 W6 Wetland 6 Routing Diagram for BluffsLL_Proposed Conditions_09.22.2020 Prepared by AE2S, Printed 9/23/2020 HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Subcat Reach Pond Link Bluffs at Lake Lucy Proposed BluffsLL_Proposed Conditions_09.22.2020 Printed 9/23/2020Prepared by AE2S Page 2HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Area Listing (all nodes) Area (acres) CN Description (subcatchment-numbers) 16.570 78 (LU 10-1, LU 2-5) 79.621 76 (LU 2-1) 63.240 73 (LU 2-10, LU 2-3, LU 2-8) 21.970 75 (LU 2-11) 29.420 72 (LU 2-12, LU 2-13, LU 2-15) 37.130 71 (LU 2-14, LU 2-9) 14.470 74 (LU 2-16, LU 2-2) 17.084 77 (LU 2-18, LU 2-7) 12.300 79 (LU 2-4) 30.132 74 75% Grass cover Good, HSG C (300S, 301S, 401S, 500S, 600S, 700S, 701S, 800S, 900S, W11S, W12S, W13S, W14S, W6S) 0.500 74 >75% Grass cover, Good, HSG C (400S) 1.060 79 CN from Previous Model (BLL_PR112, BLL_PR206, BLL_PR303) 0.190 98 Existing County Road (BLL_PR101, BLL_PR304, BLL_PR601) 0.560 98 Existing homes (BLL_PR304, BLL_PR504) 3.070 74 Existing lawn (BLL_PR304, BLL_PR401, BLL_PR502, BLL_PR504) 0.030 98 Existing road (BLL_PR402) 0.170 98 Existing road and sidewalk (BLL_PR502) 20.681 98 Impervious, HSG C (300S, 301S, 401S, 500S, 600S, 700S, 701S, 800S, 900S, W11S, W12S, W13S, W14S, W6S) 10.654 71 Meadow, HSG C (300S, 301S, 401S, 500S, 600S, 700S, 701S, 800S, W11S, W14S, W6S) 1.700 98 Paved roads w/curbs & sewers, HSG C (400S) 1.130 98 Pond (BLL_PR101, BLL_PR201) 5.540 98 Proposed homes and road (BLL_PR101, BLL_PR102, BLL_PR103, BLL_PR104, BLL_PR105, BLL_PR106, BLL_PR107, BLL_PR108, BLL_PR109, BLL_PR110, BLL_PR111, BLL_PR201, BLL_PR202, BLL_PR203, BLL_PR204, BLL_PR205, BLL_PR302, BLL_PR402, BLL_PR403, BL_PR207) 13.210 74 Proposed lawn (BLL_PR101, BLL_PR102, BLL_PR103, BLL_PR104, BLL_PR105, BLL_PR106, BLL_PR107, BLL_PR108, BLL_PR109, BLL_PR110, BLL_PR111, BLL_PR201, BLL_PR202, BLL_PR203, BLL_PR204, BLL_PR205, BLL_PR301, BLL_PR302, BLL_PR402, BLL_PR403, BLL_PR501, BLL_PR503, BLL_PR601, BL_PR207) 0.200 98 Proposed sidewalk (BLL_PR101, BLL_PR201, BLL_PR403) 0.290 98 Proposed trail (BLL_PR101, BLL_PR201, BLL_PR205, BLL_PR301, BLL_PR302) 1.177 98 Water Surface, HSG C (301S, 401S) 3.010 74 Wetland, HSG C (W11S, W12S, W13S, W14S, W6S) 5.621 70 Woods Good, HSG C (300S, 401S, 600S, 700S, 900S, W11S, W12S, W13S, W14S) 10.280 70 Woods, Good, HSG C (BLL_PR101, BLL_PR102, BLL_PR103, BLL_PR107, BLL_PR113, BLL_PR202, BLL_PR203, BLL_PR204, BLL_PR205, BLL_PR301, BLL_PR302, BLL_PR304, BLL_PR505, BLL_PR601) Bluffs at Lake Lucy Proposed BluffsLL_Proposed Conditions_09.22.2020 Printed 9/23/2020Prepared by AE2S Page 3HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Area Listing (all nodes) (continued) Area (acres) CN Description (subcatchment-numbers) 0.180 74 wetland (BLL_PR601) 401.189 76 TOTAL AREA Bluffs at Lake Lucy Proposed BluffsLL_Proposed Conditions_09.22.2020 Printed 9/23/2020Prepared by AE2S Page 4HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Soil Listing (all nodes) Area (acres) Soil Group Subcatchment Numbers 0.000 HSG A 0.000 HSG B 83.754 HSG C 300S, 301S, 400S, 401S, 500S, 600S, 700S, 701S, 800S, 900S, BLL_PR101, BLL_PR102, BLL_PR103, BLL_PR107, BLL_PR113, BLL_PR202, BLL_PR203, BLL_PR204, BLL_PR205, BLL_PR301, BLL_PR302, BLL_PR304, BLL_PR505, BLL_PR601, W11S, W12S, W13S, W14S, W6S 0.000 HSG D 317.435 Other BLL_PR101, BLL_PR102, BLL_PR103, BLL_PR104, BLL_PR105, BLL_PR106, BLL_PR107, BLL_PR108, BLL_PR109, BLL_PR110, BLL_PR111, BLL_PR112, BLL_PR201, BLL_PR202, BLL_PR203, BLL_PR204, BLL_PR205, BLL_PR206, BLL_PR301, BLL_PR302, BLL_PR303, BLL_PR304, BLL_PR401, BLL_PR402, BLL_PR403, BLL_PR501, BLL_PR502, BLL_PR503, BLL_PR504, BLL_PR601, BL_PR207, LU 10-1, LU 2-1, LU 2-10, LU 2-11, LU 2-12, LU 2-13, LU 2-14, LU 2-15, LU 2-16, LU 2-18, LU 2-2, LU 2-3, LU 2-4, LU 2-5, LU 2-7, LU 2-8, LU 2-9 401.189 TOTAL AREA Bluffs at Lake Lucy Proposed BluffsLL_Proposed Conditions_09.22.2020 Printed 9/23/2020Prepared by AE2S Page 5HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 0.000 0.000 291.805 291.805 LU 10- 1, LU 2-1 , LU 2-1 0, LU 2-1 1, LU 2-1 2, LU 2-1 3, LU 2-1 4, LU 2-1 5, LU 2-1 6, LU 2-1 8, LU 2-2 , LU 2-3 , LU 2-4 , LU 2-5 , LU 2-7 , Bluffs at Lake Lucy Proposed BluffsLL_Proposed Conditions_09.22.2020 Printed 9/23/2020Prepared by AE2S Page 6HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) (continued) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 30.132 0.000 0.000 30.132 75% Grass cover Good 30 0S, 30 1S, 40 1S, 50 0S, 60 0S, 70 0S, 70 1S, 80 0S, 90 0S, W1 1S, W1 2S, W1 3S, W1 4S, W6 S Bluffs at Lake Lucy Proposed BluffsLL_Proposed Conditions_09.22.2020 Printed 9/23/2020Prepared by AE2S Page 7HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) (continued) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 0.500 0.000 0.000 0.500 >75% Grass cover, Good 40 0S 0.000 0.000 0.000 0.000 1.060 1.060 CN from Previous Model BL L_ PR 11 2, BL L_ PR 20 6, BL L_ PR 30 3 0.000 0.000 0.000 0.000 0.190 0.190 Existing County Road BL L_ PR 10 1, BL L_ PR 30 4, BL L_ PR 60 1 0.000 0.000 0.000 0.000 0.560 0.560 Existing homes BL L_ PR 30 4, BL L_ PR 50 4 Bluffs at Lake Lucy Proposed BluffsLL_Proposed Conditions_09.22.2020 Printed 9/23/2020Prepared by AE2S Page 8HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) (continued) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 0.000 0.000 3.070 3.070 Existing lawn BL L_ PR 30 4, BL L_ PR 40 1, BL L_ PR 50 2, BL L_ PR 50 4 0.000 0.000 0.000 0.000 0.030 0.030 Existing road BL L_ PR 40 2 0.000 0.000 0.000 0.000 0.170 0.170 Existing road and sidewalk BL L_ PR 50 2 0.000 0.000 20.681 0.000 0.000 20.681 Impervious 30 0S, 30 1S, 40 1S, 50 0S, 60 0S, Bluffs at Lake Lucy Proposed BluffsLL_Proposed Conditions_09.22.2020 Printed 9/23/2020Prepared by AE2S Page 9HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) (continued) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 10.654 0.000 0.000 10.654 Meadow 30 0S, 30 1S, 40 1S, 50 0S, 60 0S, 70 0S, 70 1S, 80 0S, W1 1S, W1 4S, W6 S 0.000 0.000 1.700 0.000 0.000 1.700 Paved roads w/curbs & sewers 40 0S 0.000 0.000 0.000 0.000 1.130 1.130 Pond BL L_ PR 10 1, BL L_ PR 20 1 Bluffs at Lake Lucy Proposed BluffsLL_Proposed Conditions_09.22.2020 Printed 9/23/2020Prepared by AE2S Page 10HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) (continued) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 0.000 0.000 5.540 5.540 Proposed homes and road BL L_ PR 10 1, BL L_ PR 10 2, BL L_ PR 10 3, BL L_ PR 10 4, BL L_ PR 10 5, BL L_ PR 10 6, BL L_ PR 10 7, BL L_ PR 10 8, BL L_ PR 10 9, Bluffs at Lake Lucy Proposed BluffsLL_Proposed Conditions_09.22.2020 Printed 9/23/2020Prepared by AE2S Page 11HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) (continued) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 0.000 0.000 13.210 13.210 Proposed lawn BL L_ PR 10 1, BL L_ PR 10 2, BL L_ PR 10 3, BL L_ PR 10 4, BL L_ PR 10 5, BL L_ PR 10 6, BL L_ PR 10 7, BL L_ PR 10 8, BL L_ PR 10 9, Bluffs at Lake Lucy Proposed BluffsLL_Proposed Conditions_09.22.2020 Printed 9/23/2020Prepared by AE2S Page 12HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) (continued) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 0.000 0.000 0.200 0.200 Proposed sidewalk BL L_ PR 10 1, BL L_ PR 20 1, BL L_ PR 40 3 0.000 0.000 0.000 0.000 0.290 0.290 Proposed trail BL L_ PR 10 1, BL L_ PR 20 1, BL L_ PR 20 5, BL L_ PR 30 1, BL L_ PR 30 2 Bluffs at Lake Lucy Proposed BluffsLL_Proposed Conditions_09.22.2020 Printed 9/23/2020Prepared by AE2S Page 13HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) (continued) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 1.177 0.000 0.000 1.177 Water Surface 30 1S, 40 1S 0.000 0.000 3.010 0.000 0.000 3.010 Wetland W1 1S, W1 2S, W1 3S, W1 4S, W6 S 0.000 0.000 5.621 0.000 0.000 5.621 Woods Good 30 0S, 40 1S, 60 0S, 70 0S, 90 0S, W1 1S, W1 2S, W1 3S, W1 4S Bluffs at Lake Lucy Proposed BluffsLL_Proposed Conditions_09.22.2020 Printed 9/23/2020Prepared by AE2S Page 14HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) (continued) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 10.280 0.000 0.000 10.280 Woods, Good BL L_ PR 10 1, BL L_ PR 10 2, BL L_ PR 10 3, BL L_ PR 10 7, BL L_ PR 11 3, BL L_ PR 20 2, BL L_ PR 20 3, BL L_ PR 20 4, BL L_ PR 20 5, Bluffs at Lake Lucy Proposed BluffsLL_Proposed Conditions_09.22.2020 Printed 9/23/2020Prepared by AE2S Page 15HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) (continued) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 0.000 0.000 0.180 0.180 wetland BL L_ PR 60 1 0.000 0.000 83.754 0.000 317.435 401.189 TOTAL AREA Bluffs at Lake Lucy Proposed BluffsLL_Proposed Conditions_09.22.2020 Printed 9/23/2020Prepared by AE2S Page 16HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pipe Listing (all nodes) Line# Node Number In-Invert (feet) Out-Invert (feet) Length (feet) Slope (ft/ft) n Diam/Width (inches) Height (inches) Inside-Fill (inches) 1 Pipe from W2 to W1 964.30 964.00 212.0 0.0014 0.013 36.0 0.0 0.0 2 300P 960.22 960.00 43.0 0.0051 0.013 42.0 0.0 0.0 3 300P 960.00 960.00 10.0 0.0000 0.013 42.0 0.0 0.0 4 300P 960.22 960.00 43.0 0.0051 0.013 36.0 0.0 0.0 5 400P 982.00 982.00 29.0 0.0000 0.013 15.0 0.0 0.0 6 400P 981.75 982.00 22.0 -0.0114 0.013 15.0 0.0 0.0 7 BLL_Pond1 970.50 969.50 14.5 0.0690 0.013 27.0 0.0 0.0 8 BLL_Pond1 970.00 970.50 30.4 -0.0164 0.013 15.0 0.0 0.0 9 BLL_Pond2 960.50 959.80 74.6 0.0094 0.013 18.0 0.0 0.0 10 BLL_Pond2 961.50 961.50 32.2 0.0000 0.013 15.0 0.0 0.0 11 CB-9 987.85 980.75 94.0 0.0755 0.025 24.0 0.0 0.0 12 P-LU 2-11 972.01 971.97 114.0 0.0004 0.011 15.0 0.0 0.0 13 P-LU 2-13 989.60 983.00 110.0 0.0600 0.011 24.0 0.0 0.0 14 P-LU 2-2 968.58 968.08 85.0 0.0059 0.012 30.0 0.0 0.0 15 P-LU 2-2 971.97 972.01 114.0 -0.0004 0.011 15.0 0.0 0.0 16 P-LU 2-5 962.98 962.83 30.0 0.0050 0.013 18.0 0.0 0.0 17 P-LU 2-5 963.38 964.83 15.0 -0.0967 0.013 15.0 0.0 0.0 18 P-LU 2-6 982.57 982.05 50.0 0.0104 0.013 15.0 0.0 0.0 19 P-LU 2-7 995.27 994.07 60.8 0.0197 0.013 12.0 0.0 0.0 20 P-LU-2-16 994.07 987.85 93.0 0.0669 0.013 12.0 0.0 0.0 21 W12 994.00 993.82 45.0 0.0040 0.013 15.0 0.0 0.0 22 W2 967.50 967.00 40.4 0.0124 0.013 18.0 0.0 0.0 23 W2 967.70 967.50 13.0 0.0154 0.013 12.0 0.0 0.0 24 W2 968.58 968.08 85.0 0.0059 0.012 30.0 0.0 0.0 Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 17HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Time span=0.00-250.00 hrs, dt=0.002 hrs, 125001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Sim-Route method - Pond routing by Sim-Route method Runoff Area=38.561 ac 45.60% Impervious Runoff Depth=1.65"Subcatchment 300S: 300 Flow Length=1,575' Slope=0.0350 '/' Tc=20.7 min CN=WQ Runoff=59.37 cfs 5.293 af Runoff Area=5.606 ac 29.33% Impervious Runoff Depth=1.31"Subcatchment 301S: 301 Flow Length=275' Slope=0.1030 '/' Tc=3.5 min CN=WQ Runoff=13.52 cfs 0.614 af Runoff Area=2.200 ac 77.27% Impervious Runoff Depth=2.23"Subcatchment 400S: Proposed CR 117 Tc=20.0 min CN=WQ Runoff=4.69 cfs 0.408 af Runoff Area=2.600 ac 17.79% Impervious Runoff Depth=1.08"Subcatchment 401S: 401 Flow Length=500' Slope=0.0500 '/' Tc=8.9 min CN=WQ Runoff=3.87 cfs 0.235 af Runoff Area=1.766 ac 29.44% Impervious Runoff Depth=1.35"Subcatchment 500S: 500 Flow Length=510' Slope=0.0400 '/' Tc=9.0 min CN=WQ Runoff=3.32 cfs 0.199 af Runoff Area=0.529 ac 14.88% Impervious Runoff Depth=1.02"Subcatchment 600S: 600 Flow Length=495' Slope=0.0400 '/' Tc=10.2 min CN=WQ Runoff=0.69 cfs 0.045 af Runoff Area=8.313 ac 0.56% Impervious Runoff Depth=0.70"Subcatchment 700S: 700 Flow Length=500' Slope=0.0900 '/' Tc=7.9 min CN=WQ Runoff=8.19 cfs 0.486 af Runoff Area=0.636 ac 16.77% Impervious Runoff Depth=1.05"Subcatchment 701S: 701 Flow Length=255' Slope=0.0400 '/' Tc=6.0 min CN=WQ Runoff=1.06 cfs 0.055 af Runoff Area=1.094 ac 15.23% Impervious Runoff Depth=1.04"Subcatchment 800S: 800 Flow Length=355' Slope=0.0400 '/' Tc=7.8 min CN=WQ Runoff=1.65 cfs 0.095 af Runoff Area=1.215 ac 34.66% Impervious Runoff Depth=1.45"Subcatchment 900S: 900 Flow Length=470' Slope=0.0300 '/' Tc=9.4 min CN=WQ Runoff=2.41 cfs 0.147 af Runoff Area=6.910 ac 46.89% Impervious Runoff Depth=1.66"Subcatchment BLL_PR101: BLL_PR101 Tc=15.0 min CN=WQ Runoff=12.50 cfs 0.953 af Runoff Area=0.740 ac 10.81% Impervious Runoff Depth=0.96"Subcatchment BLL_PR102: BLL_PR102 Tc=15.0 min CN=WQ Runoff=0.76 cfs 0.059 af Runoff Area=0.250 ac 16.00% Impervious Runoff Depth=1.11"Subcatchment BLL_PR103: BLL_PR103 Tc=15.0 min CN=WQ Runoff=0.30 cfs 0.023 af Runoff Area=0.100 ac 30.00% Impervious Runoff Depth=1.37"Subcatchment BLL_PR104: BLL_PR104 Tc=15.0 min CN=WQ Runoff=0.15 cfs 0.011 af Runoff Area=0.260 ac 23.08% Impervious Runoff Depth=1.24"Subcatchment BLL_PR105: BLL_PR105 Tc=15.0 min CN=WQ Runoff=0.36 cfs 0.027 af Runoff Area=0.080 ac 37.50% Impervious Runoff Depth=1.51"Subcatchment BLL_PR106: BLL_PR106 Tc=15.0 min CN=WQ Runoff=0.13 cfs 0.010 af Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 18HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=0.150 ac 20.00% Impervious Runoff Depth=1.18"Subcatchment BLL_PR107: BLL_PR107 Tc=15.0 min CN=WQ Runoff=0.19 cfs 0.015 af Runoff Area=0.160 ac 25.00% Impervious Runoff Depth=1.28"Subcatchment BLL_PR108: BLL_PR108 Tc=15.0 min CN=WQ Runoff=0.22 cfs 0.017 af Runoff Area=0.160 ac 18.75% Impervious Runoff Depth=1.17"Subcatchment BLL_PR109: BLL_PR109 Tc=15.0 min CN=WQ Runoff=0.21 cfs 0.016 af Runoff Area=0.360 ac 16.67% Impervious Runoff Depth=1.13"Subcatchment BLL_PR110: BLL_PR110 Tc=15.0 min CN=WQ Runoff=0.45 cfs 0.034 af Runoff Area=0.280 ac 17.86% Impervious Runoff Depth=1.15"Subcatchment BLL_PR111: BLL_PR111 Tc=15.0 min CN=WQ Runoff=0.35 cfs 0.027 af Runoff Area=0.520 ac 0.00% Impervious Runoff Depth=1.09"Subcatchment BLL_PR112: BLL_PR112 Tc=15.0 min CN=79 Runoff=0.67 cfs 0.047 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=0.64"Subcatchment BLL_PR113: BLL_PR113 Flow Length=180' Slope=0.0830 '/' Tc=20.5 min CN=70 Runoff=0.02 cfs 0.002 af Runoff Area=4.470 ac 55.48% Impervious Runoff Depth=1.83"Subcatchment BLL_PR201: BLL_PR201 Tc=15.0 min CN=WQ Runoff=9.00 cfs 0.682 af Runoff Area=0.920 ac 18.48% Impervious Runoff Depth=1.16"Subcatchment BLL_PR202: BLL_PR202 Tc=15.0 min CN=WQ Runoff=1.17 cfs 0.089 af Runoff Area=0.340 ac 26.47% Impervious Runoff Depth=1.30"Subcatchment BLL_PR203: BLL_PR203 Tc=15.0 min CN=WQ Runoff=0.48 cfs 0.037 af Runoff Area=1.400 ac 17.86% Impervious Runoff Depth=1.11"Subcatchment BLL_PR204: BLL_PR204 Tc=15.0 min CN=WQ Runoff=1.68 cfs 0.129 af Runoff Area=1.750 ac 12.57% Impervious Runoff Depth=1.00"Subcatchment BLL_PR205: BLL_PR205 Tc=15.0 min CN=WQ Runoff=1.90 cfs 0.146 af Runoff Area=0.310 ac 0.00% Impervious Runoff Depth=1.09"Subcatchment BLL_PR206: BLL_PR206 Tc=15.0 min CN=79 Runoff=0.40 cfs 0.028 af Runoff Area=9.030 ac 0.78% Impervious Runoff Depth=0.71"Subcatchment BLL_PR301: BLL_PR301 Flow Length=300' Slope=0.1500 '/' Tc=24.4 min CN=WQ Runoff=5.27 cfs 0.538 af Runoff Area=1.420 ac 7.04% Impervious Runoff Depth=0.83"Subcatchment BLL_PR302: BLL_PR302 Flow Length=570' Tc=36.5 min CN=WQ Runoff=0.77 cfs 0.098 af Runoff Area=0.230 ac 0.00% Impervious Runoff Depth=1.09"Subcatchment BLL_PR303: BLL_PR303 Flow Length=800' Tc=46.2 min CN=79 Runoff=0.16 cfs 0.021 af Runoff Area=2.850 ac 16.84% Impervious Runoff Depth=1.11"Subcatchment BLL_PR304: BLL_PR304 Flow Length=300' Slope=0.1660 '/' Tc=23.4 min CN=WQ Runoff=2.74 cfs 0.263 af Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 19HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=0.100 ac 0.00% Impervious Runoff Depth=0.83"Subcatchment BLL_PR401: BLL_PR401 Tc=15.0 min CN=74 Runoff=0.09 cfs 0.007 af Runoff Area=0.090 ac 55.56% Impervious Runoff Depth=1.83"Subcatchment BLL_PR402: BLL_PR402 Tc=15.0 min CN=WQ Runoff=0.18 cfs 0.014 af Runoff Area=0.110 ac 45.45% Impervious Runoff Depth=1.65"Subcatchment BLL_PR403: BLL_PR403 Tc=15.0 min CN=WQ Runoff=0.20 cfs 0.015 af Runoff Area=0.310 ac 0.00% Impervious Runoff Depth=0.83"Subcatchment BLL_PR501: BLL_PR501 Tc=15.0 min CN=74 Runoff=0.28 cfs 0.021 af Runoff Area=0.270 ac 62.96% Impervious Runoff Depth=1.97"Subcatchment BLL_PR502: BLL_PR502 Tc=15.0 min CN=WQ Runoff=0.58 cfs 0.044 af Runoff Area=0.010 ac 0.00% Impervious Runoff Depth=0.83"Subcatchment BLL_PR503: BLL_PR503 Tc=15.0 min CN=74 Runoff=0.01 cfs 0.001 af Runoff Area=1.030 ac 15.53% Impervious Runoff Depth=1.11"Subcatchment BLL_PR504: BLL_PR504 Tc=15.0 min CN=WQ Runoff=1.26 cfs 0.095 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=0.64"Subcatchment BLL_PR505: BLL_PR505 Flow Length=50' Slope=0.1200 '/' Tc=6.4 min CN=70 Runoff=0.03 cfs 0.002 af Runoff Area=1.110 ac 7.21% Impervious Runoff Depth=0.84"Subcatchment BLL_PR601: BLL_PR601 Flow Length=180' Slope=0.0667 '/' Tc=9.1 min CN=WQ Runoff=1.24 cfs 0.078 af Runoff Area=0.130 ac 38.46% Impervious Runoff Depth=1.52"Subcatchment BL_PR207: BLL_PR207 Tc=15.0 min CN=WQ Runoff=0.22 cfs 0.017 af Runoff Area=7.420 ac 0.00% Impervious Runoff Depth=1.04"Subcatchment LU 10-1: LU 10-1 Tc=6.0 min CN=78 Runoff=13.29 cfs 0.641 af Runoff Area=79.621 ac 0.00% Impervious Runoff Depth=0.93"Subcatchment LU 2-1: LU 2-1 Tc=52.0 min CN=76 Runoff=41.77 cfs 6.161 af Runoff Area=9.880 ac 0.00% Impervious Runoff Depth=0.78"Subcatchment LU 2-10: LU 2-10 Tc=6.0 min CN=73 Runoff=12.46 cfs 0.641 af Runoff Area=21.970 ac 0.00% Impervious Runoff Depth=0.88"Subcatchment LU 2-11: LU 2-11 Tc=12.0 min CN=75 Runoff=24.15 cfs 1.605 af Runoff Area=9.720 ac 0.00% Impervious Runoff Depth=0.73"Subcatchment LU 2-12: LU 2-12 Tc=6.0 min CN=72 Runoff=11.30 cfs 0.593 af Runoff Area=15.390 ac 0.00% Impervious Runoff Depth=0.73"Subcatchment LU 2-13: LU 2-13 Tc=7.0 min CN=72 Runoff=16.92 cfs 0.939 af Runoff Area=25.920 ac 0.00% Impervious Runoff Depth=0.69"Subcatchment LU 2-14: LU 2-14 Tc=12.0 min CN=71 Runoff=20.63 cfs 1.483 af Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 20HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=4.310 ac 0.00% Impervious Runoff Depth=0.73"Subcatchment LU 2-15: LU 2-15 Tc=4.0 min CN=72 Runoff=5.70 cfs 0.263 af Runoff Area=2.560 ac 0.00% Impervious Runoff Depth=0.83"Subcatchment LU 2-16: LU 2-16 Tc=4.0 min CN=74 Runoff=3.95 cfs 0.176 af Runoff Area=8.180 ac 0.00% Impervious Runoff Depth=0.98"Subcatchment LU 2-18: LU 2-18 Tc=7.0 min CN=77 Runoff=12.99 cfs 0.669 af Runoff Area=11.910 ac 0.00% Impervious Runoff Depth=0.83"Subcatchment LU 2-2: LU 2-2 Tc=7.0 min CN=74 Runoff=15.33 cfs 0.821 af Runoff Area=47.530 ac 0.00% Impervious Runoff Depth=0.78"Subcatchment LU 2-3: LU 2-3 Tc=17.0 min CN=73 Runoff=37.83 cfs 3.084 af Runoff Area=12.300 ac 0.00% Impervious Runoff Depth=1.09"Subcatchment LU 2-4: LU 2-4 Tc=8.0 min CN=79 Runoff=21.06 cfs 1.122 af Runoff Area=9.150 ac 0.00% Impervious Runoff Depth=1.04"Subcatchment LU 2-5: LU 2-5 Tc=7.0 min CN=78 Runoff=15.50 cfs 0.791 af Runoff Area=8.904 ac 0.00% Impervious Runoff Depth=0.98"Subcatchment LU 2-7: LU 2-7 Tc=7.0 min CN=77 Runoff=14.14 cfs 0.729 af Runoff Area=5.830 ac 0.00% Impervious Runoff Depth=0.78"Subcatchment LU 2-8: LU 2-8 Tc=5.0 min CN=73 Runoff=7.83 cfs 0.378 af Runoff Area=11.210 ac 0.00% Impervious Runoff Depth=0.69"Subcatchment LU 2-9: LU 2-9 Tc=7.0 min CN=71 Runoff=11.31 cfs 0.642 af Runoff Area=5.464 ac 5.19% Impervious Runoff Depth=0.87"Subcatchment W11S: W11 Flow Length=650' Slope=0.0380 '/' Tc=13.8 min CN=WQ Runoff=5.34 cfs 0.394 af Runoff Area=0.734 ac 6.42% Impervious Runoff Depth=0.87"Subcatchment W12S: W12 Flow Length=130' Slope=0.1200 '/' Tc=2.1 min CN=WQ Runoff=1.29 cfs 0.053 af Runoff Area=1.729 ac 6.61% Impervious Runoff Depth=0.92"Subcatchment W13S: W13 Flow Length=715' Slope=0.0900 '/' Tc=9.4 min CN=WQ Runoff=2.16 cfs 0.133 af Runoff Area=2.452 ac 13.89% Impervious Runoff Depth=1.03"Subcatchment W14S: W14 Flow Length=715' Slope=0.0900 '/' Tc=9.1 min CN=WQ Runoff=3.44 cfs 0.210 af Runoff Area=0.575 ac 7.12% Impervious Runoff Depth=0.86"Subcatchment W6S: W6 Flow Length=200' Slope=0.0800 '/' Tc=3.7 min CN=WQ Runoff=0.90 cfs 0.041 af Avg. Flow Depth=1.23' Max Vel=3.24 fps Inflow=8.87 cfs 4.512 afReach Pipe from W2 to W1: Pipe from 36.0" Round Pipe n=0.013 L=212.0' S=0.0014 '/' Capacity=25.09 cfs Outflow=8.87 cfs 4.512 af Peak Elev=967.18' Storage=442,812 cf Inflow=66.21 cfs 6.237 afPond 300P: Pond with IESF Primary=2.70 cfs 6.237 af Secondary=0.00 cfs 0.000 af Outflow=2.70 cfs 6.237 af Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 21HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=984.80' Storage=50,099 cf Inflow=7.37 cfs 0.643 afPond 400P: County pond with IESF Outflow=2.77 cfs 0.643 af Peak Elev=984.95' Inflow=2.92 cfs 0.330 afPond 490: CB inlet Primary=2.92 cfs 0.330 af Secondary=0.00 cfs 0.000 af Outflow=2.92 cfs 0.330 af Peak Elev=981.04' Inflow=0.00 cfs 0.000 afPond 491P: CB inlet Outflow=0.00 cfs 0.000 af Peak Elev=985.36' Storage=2,960 cf Inflow=3.32 cfs 0.199 afPond 500P: IESF Outflow=2.17 cfs 0.199 af Peak Elev=999.51' Storage=1,239 cf Inflow=0.69 cfs 0.045 afPond 600P: rain garden Discarded=0.01 cfs 0.040 af Primary=0.02 cfs 0.005 af Outflow=0.03 cfs 0.045 af Peak Elev=1,001.62' Storage=1,270 cf Inflow=1.65 cfs 0.095 afPond 800P: rain garden Discarded=0.01 cfs 0.035 af Primary=0.99 cfs 0.060 af Outflow=0.99 cfs 0.095 af Peak Elev=992.14' Storage=2,475 cf Inflow=2.41 cfs 0.147 afPond 900P: IESF Outflow=1.24 cfs 0.147 af Peak Elev=997.59' Storage=18 cf Inflow=1.17 cfs 0.089 afPond BLL_CB11: Bluffs at Lake Lucy CB 11 Primary=1.16 cfs 0.089 af Secondary=0.00 cfs 0.000 af Outflow=1.16 cfs 0.089 af Peak Elev=1,014.04' Storage=1 cf Inflow=0.22 cfs 0.017 afPond BLL_CB13A: Bluffs at Lake Lucy CB 13A Primary=0.22 cfs 0.017 af Secondary=0.00 cfs 0.000 af Outflow=0.22 cfs 0.017 af Peak Elev=978.55' Storage=2 cf Inflow=0.22 cfs 0.017 afPond BLL_CB22: Bluffs at Lake Lucy CB 22 Primary=0.22 cfs 0.017 af Secondary=0.00 cfs 0.000 af Outflow=0.22 cfs 0.017 af Peak Elev=978.54' Storage=2 cf Inflow=0.21 cfs 0.016 afPond BLL_CB23: Bluffs at Lake Lucy CB 23 Primary=0.21 cfs 0.016 af Secondary=0.00 cfs 0.000 af Outflow=0.21 cfs 0.016 af Peak Elev=979.04' Storage=2 cf Inflow=0.19 cfs 0.015 afPond BLL_CB24: Bluffs at Lake Lucy CB 24 Primary=0.19 cfs 0.015 af Secondary=0.00 cfs 0.000 af Outflow=0.19 cfs 0.015 af Peak Elev=981.03' Storage=1 cf Inflow=0.13 cfs 0.010 afPond BLL_CB25: Bluffs at Lake Lucy CB 25 Primary=0.13 cfs 0.010 af Secondary=0.00 cfs 0.000 af Outflow=0.13 cfs 0.010 af Peak Elev=983.06' Storage=4 cf Inflow=0.36 cfs 0.027 afPond BLL_CB26: Bluffs at Lake Lucy CB 26 Primary=0.36 cfs 0.027 af Secondary=0.00 cfs 0.000 af Outflow=0.36 cfs 0.027 af Peak Elev=986.07' Storage=3 cf Inflow=0.45 cfs 0.034 afPond BLL_CB27: Bluffs at Lake Lucy CB 27 Primary=0.45 cfs 0.034 af Secondary=0.00 cfs 0.000 af Outflow=0.45 cfs 0.034 af Peak Elev=995.06' Storage=4 cf Inflow=0.35 cfs 0.027 afPond BLL_CB28: Bluffs at Lake Lucy CB 28 Primary=0.35 cfs 0.027 af Secondary=0.00 cfs 0.000 af Outflow=0.35 cfs 0.027 af Peak Elev=1,000.06' Storage=3 cf Inflow=0.30 cfs 0.023 afPond BLL_CB30: Bluffs at Lake Lucy CB 30 Primary=0.30 cfs 0.023 af Secondary=0.00 cfs 0.000 af Outflow=0.30 cfs 0.023 af Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 22HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=1,004.16' Storage=21 cf Inflow=1.43 cfs 0.107 afPond BLL_CB37: Bluffs at Lake Lucy CB 37 Primary=1.43 cfs 0.107 af Secondary=0.00 cfs 0.000 af Outflow=1.43 cfs 0.107 af Peak Elev=1,010.17' Storage=11 cf Inflow=1.68 cfs 0.129 afPond BLL_CB9: Bluffs at Lake Lucy CB 9 Primary=1.68 cfs 0.129 af Secondary=0.00 cfs 0.000 af Outflow=1.68 cfs 0.129 af Peak Elev=974.29' Storage=119,396 cf Inflow=16.28 cfs 1.241 afPond BLL_Pond1: Bluffs at Lake Lucy Primary=2.40 cfs 1.240 af Secondary=0.00 cfs 0.000 af Outflow=2.40 cfs 1.240 af Peak Elev=965.31' Storage=54,138 cf Inflow=14.79 cfs 1.128 afPond BLL_Pond2: Bluffs at Lake Lucy Discarded=0.24 cfs 1.128 af Primary=0.00 cfs 0.000 af Secondary=0.00 cfs 0.000 af Outflow=0.24 cfs 1.128 af Peak Elev=988.63' Inflow=3.43 cfs 0.903 afPond CB-9: EX CB-9 24.0" Round Culvert n=0.025 L=94.0' S=0.0755 '/' Outflow=3.43 cfs 0.903 af Peak Elev=997.03' Storage=1 cf Inflow=0.15 cfs 0.011 afPond GB_CB27: Bluffs at Lake Lucy CB 29 Primary=0.15 cfs 0.011 af Secondary=0.00 cfs 0.000 af Outflow=0.15 cfs 0.011 af Inflow=26.50 cfs 56.067 afPond LUCY: LAKE LUCY Primary=26.50 cfs 56.067 af Peak Elev=957.61' Storage=173,524 cf Inflow=60.18 cfs 19.186 afPond P-LU 2-1: P-LU 2-1 Outflow=26.03 cfs 55.784 af Peak Elev=972.89' Storage=0.234 af Inflow=12.46 cfs 0.641 afPond P-LU 2-10: P-LU 2-10 Outflow=2.87 cfs 0.476 af Peak Elev=971.15' Storage=3.514 af Inflow=44.78 cfs 3.516 afPond P-LU 2-11: P-LU 2-11 15.0" Round Culvert n=0.011 L=114.0' S=0.0004 '/' Outflow=0.00 cfs 0.000 af Peak Elev=976.16' Storage=0.593 af Inflow=11.30 cfs 0.593 afPond P-LU 2-12: P-LU 2-12 Primary=0.00 cfs 0.000 af Secondary=0.00 cfs 0.000 af Outflow=0.00 cfs 0.000 af Peak Elev=989.97' Storage=0.600 af Inflow=16.92 cfs 0.939 afPond P-LU 2-13: P-LU 2-13 24.0" Round Culvert n=0.011 L=110.0' S=0.0600 '/' Outflow=0.82 cfs 0.427 af Peak Elev=971.15' Storage=0.524 af Inflow=20.16 cfs 3.432 afPond P-LU 2-2: P-LU 2-2 Primary=6.63 cfs 3.432 af Secondary=0.00 cfs 0.000 af Outflow=6.63 cfs 3.432 af Peak Elev=992.27' Storage=3.102 af Inflow=37.83 cfs 3.102 afPond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Outflow=0.00 cfs 0.000 af Peak Elev=975.11' Storage=0.494 af Inflow=22.61 cfs 1.285 afPond P-LU 2-4: P-LU 2-4 Primary=5.79 cfs 0.922 af Secondary=3.03 cfs 0.043 af Outflow=8.83 cfs 0.965 af Peak Elev=965.52' Storage=0.778 af Inflow=15.50 cfs 0.791 afPond P-LU 2-5: P-LU 2-5 Outflow=1.97 cfs 0.810 af Peak Elev=979.84' Storage=93,177 cf Inflow=11.07 cfs 2.140 afPond P-LU 2-6: Wetland 11 15.0" Round Culvert n=0.013 L=50.0' S=0.0104 '/' Outflow=0.00 cfs 0.000 af Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 23HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=996.46' Storage=29,328 cf Inflow=14.14 cfs 0.729 afPond P-LU 2-7: P-LU 2-7 12.0" Round Culvert n=0.013 L=60.8' S=0.0197 '/' Outflow=3.14 cfs 0.728 af Peak Elev=996.10' Storage=0.375 af Inflow=7.83 cfs 0.378 afPond P-LU 2-8: P-LU 2-8 Primary=0.05 cfs 0.018 af Secondary=0.00 cfs 0.000 af Outflow=0.05 cfs 0.018 af Peak Elev=975.72' Storage=0.642 af Inflow=11.31 cfs 0.642 afPond P-LU 2-9: P-LU 2-9 Outflow=0.00 cfs 0.000 af Peak Elev=994.35' Storage=4,539 cf Inflow=3.95 cfs 0.176 afPond P-LU-2-16: P-LU-2-16 12.0" Round Culvert n=0.013 L=93.0' S=0.0669 '/' Outflow=0.33 cfs 0.175 af Peak Elev=963.46' Storage=0.460 af Inflow=13.57 cfs 0.677 afPond P-LU10-1: P-LU 10-1 Primary=0.52 cfs 0.283 af Secondary=0.00 cfs 0.000 af Outflow=0.52 cfs 0.283 af Peak Elev=993.73' Storage=0.053 af Inflow=1.29 cfs 0.053 afPond W12: Wetland 12 15.0" Round Culvert n=0.013 L=45.0' S=0.0040 '/' Outflow=0.00 cfs 0.000 af Peak Elev=993.01' Storage=5,634 cf Inflow=2.16 cfs 0.133 afPond W13: Wetland 13 Outflow=0.03 cfs 0.006 af Peak Elev=987.28' Storage=2,836 cf Inflow=3.46 cfs 0.364 afPond W14: Wetland 14 Outflow=2.92 cfs 0.330 af Peak Elev=971.14' Storage=27,168 cf Inflow=20.27 cfs 5.144 afPond W2: Wetland 2 Primary=6.48 cfs 3.271 af Secondary=0.41 cfs 1.873 af Outflow=6.48 cfs 5.144 af Peak Elev=1,000.16' Storage=4,402 cf Inflow=1.31 cfs 0.101 afPond W6: Wetland 6 Outflow=0.00 cfs 0.000 af Total Runoff Area = 401.189 ac Runoff Volume = 32.712 af Average Runoff Depth = 0.98" 92.11% Pervious = 369.521 ac 7.89% Impervious = 31.668 ac Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 24HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 300S: 300 Runoff = 59.37 cfs @ 12.28 hrs, Volume= 5.293 af, Depth= 1.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.755 70 Woods Good, HSG C * 0.637 71 Meadow, HSG C * 19.586 74 75% Grass cover Good, HSG C * 17.584 98 Impervious, HSG C 38.561 Weighted Average 20.977 54.40% Pervious Area 17.584 45.60% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.7 1,575 0.0350 1.27 Lag/CN Method, Subcatchment 300S: 300 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=38.561 ac Runoff Volume=5.293 af Runoff Depth=1.65" Flow Length=1,575' Slope=0.0350 '/' Tc=20.7 min CN=WQ 59.37 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 25HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 301S: 301 Runoff = 13.52 cfs @ 12.06 hrs, Volume= 0.614 af, Depth= 1.31" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.991 98 Water Surface, HSG C * 1.761 71 Meadow, HSG C * 2.200 74 75% Grass cover Good, HSG C * 0.654 98 Impervious, HSG C 5.606 Weighted Average 3.961 70.67% Pervious Area 1.644 29.33% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.5 275 0.1030 1.30 Lag/CN Method, Subcatchment 301S: 301 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=5.606 ac Runoff Volume=0.614 af Runoff Depth=1.31" Flow Length=275' Slope=0.1030 '/' Tc=3.5 min CN=WQ 13.52 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 26HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 400S: Proposed CR 117 Runoff = 4.69 cfs @ 12.25 hrs, Volume= 0.408 af, Depth= 2.23" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description 1.700 98 Paved roads w/curbs & sewers, HSG C 0.500 74 >75% Grass cover, Good, HSG C 2.200 Weighted Average 0.500 22.73% Pervious Area 1.700 77.27% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.0 Direct Entry, Subcatchment 400S: Proposed CR 117 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=2.200 ac Runoff Volume=0.408 af Runoff Depth=2.23" Tc=20.0 min CN=WQ 4.69 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 27HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 401S: 401 Runoff = 3.87 cfs @ 12.13 hrs, Volume= 0.235 af, Depth= 1.08" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.243 70 Woods Good, HSG C * 0.186 98 Water Surface, HSG C * 0.897 71 Meadow, HSG C * 0.997 74 75% Grass cover Good, HSG C * 0.276 98 Impervious, HSG C 2.600 Weighted Average 2.138 82.21% Pervious Area 0.462 17.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.9 500 0.0500 0.93 Lag/CN Method, Subcatchment 401S: 401 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=2.600 ac Runoff Volume=0.235 af Runoff Depth=1.08" Flow Length=500' Slope=0.0500 '/' Tc=8.9 min CN=WQ 3.87 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 28HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 500S: 500 Runoff = 3.32 cfs @ 12.13 hrs, Volume= 0.199 af, Depth= 1.35" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.097 71 Meadow, HSG C * 1.149 74 75% Grass cover Good, HSG C * 0.520 98 Impervious, HSG C 1.766 Weighted Average 1.246 70.56% Pervious Area 0.520 29.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.0 510 0.0400 0.95 Lag/CN Method, Subcatchment 500S: 500 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=1.766 ac Runoff Volume=0.199 af Runoff Depth=1.35" Flow Length=510' Slope=0.0400 '/' Tc=9.0 min CN=WQ 3.32 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 29HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 600S: 600 Runoff = 0.69 cfs @ 12.15 hrs, Volume= 0.045 af, Depth= 1.02" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.066 70 Woods Good, HSG C * 0.221 71 Meadow, HSG C * 0.163 74 75% Grass cover Good, HSG C * 0.079 98 Impervious, HSG C 0.529 Weighted Average 0.450 85.12% Pervious Area 0.079 14.88% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.2 495 0.0400 0.81 Lag/CN Method, Subcatchment 600S: 600 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.529 ac Runoff Volume=0.045 af Runoff Depth=1.02" Flow Length=495' Slope=0.0400 '/' Tc=10.2 min CN=WQ 0.69 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 30HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 700S: 700 Runoff = 8.19 cfs @ 12.12 hrs, Volume= 0.486 af, Depth= 0.70" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 2.897 70 Woods Good, HSG C * 4.268 71 Meadow, HSG C * 1.101 74 75% Grass cover Good, HSG C * 0.047 98 Impervious, HSG C 8.313 Weighted Average 8.266 99.44% Pervious Area 0.047 0.56% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.9 500 0.0900 1.05 Lag/CN Method, Subcatchment 700S: 700 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=8.313 ac Runoff Volume=0.486 af Runoff Depth=0.70" Flow Length=500' Slope=0.0900 '/' Tc=7.9 min CN=WQ 8.19 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 31HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 701S: 701 Runoff = 1.06 cfs @ 12.09 hrs, Volume= 0.055 af, Depth= 1.05" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.380 71 Meadow, HSG C * 0.149 74 75% Grass cover Good, HSG C * 0.107 98 Impervious, HSG C 0.636 Weighted Average 0.529 83.23% Pervious Area 0.107 16.77% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 255 0.0400 0.71 Lag/CN Method, Subcatchment 701S: 701 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.636 ac Runoff Volume=0.055 af Runoff Depth=1.05" Flow Length=255' Slope=0.0400 '/' Tc=6.0 min CN=WQ 1.06 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 32HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 800S: 800 Runoff = 1.65 cfs @ 12.11 hrs, Volume= 0.095 af, Depth= 1.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.484 71 Meadow, HSG C * 0.443 74 75% Grass cover Good, HSG C * 0.167 98 Impervious, HSG C 1.094 Weighted Average 0.927 84.77% Pervious Area 0.167 15.23% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.8 355 0.0400 0.76 Lag/CN Method, Subcatchment 800S: 800 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=1.094 ac Runoff Volume=0.095 af Runoff Depth=1.04" Flow Length=355' Slope=0.0400 '/' Tc=7.8 min CN=WQ 1.65 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 33HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 900S: 900 Runoff = 2.41 cfs @ 12.13 hrs, Volume= 0.147 af, Depth= 1.45" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.000 70 Woods Good, HSG C * 0.794 74 75% Grass cover Good, HSG C * 0.421 98 Impervious, HSG C 1.215 Weighted Average 0.794 65.34% Pervious Area 0.421 34.66% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 470 0.0300 0.83 Lag/CN Method, Subcatchment 900S: 900 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=1.215 ac Runoff Volume=0.147 af Runoff Depth=1.45" Flow Length=470' Slope=0.0300 '/' Tc=9.4 min CN=WQ 2.41 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 34HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR101: BLL_PR101 Runoff = 12.50 cfs @ 12.20 hrs, Volume= 0.953 af, Depth= 1.66" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.030 98 Existing County Road * 2.490 98 Proposed homes and road * 2.870 74 Proposed lawn * 0.560 98 Pond * 0.150 98 Proposed sidewalk * 0.010 98 Proposed trail 0.800 70 Woods, Good, HSG C 6.910 Weighted Average 3.670 53.11% Pervious Area 3.240 46.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR101: BLL_PR101 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=6.910 ac Runoff Volume=0.953 af Runoff Depth=1.66" Tc=15.0 min CN=WQ 12.50 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 35HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR102: BLL_PR102 Runoff = 0.76 cfs @ 12.22 hrs, Volume= 0.059 af, Depth= 0.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.080 98 Proposed homes and road * 0.400 74 Proposed lawn 0.260 70 Woods, Good, HSG C 0.740 Weighted Average 0.660 89.19% Pervious Area 0.080 10.81% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR102: BLL_PR102 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.740 ac Runoff Volume=0.059 af Runoff Depth=0.96" Tc=15.0 min CN=WQ 0.76 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 36HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR103: BLL_PR103 Runoff = 0.30 cfs @ 12.22 hrs, Volume= 0.023 af, Depth= 1.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.040 98 Proposed homes and road * 0.200 74 Proposed lawn 0.010 70 Woods, Good, HSG C 0.250 Weighted Average 0.210 84.00% Pervious Area 0.040 16.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR103: BLL_PR103 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.250 ac Runoff Volume=0.023 af Runoff Depth=1.11" Tc=15.0 min CN=WQ 0.30 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 37HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR104: BLL_PR104 Runoff = 0.15 cfs @ 12.22 hrs, Volume= 0.011 af, Depth= 1.37" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.030 98 Proposed homes and road * 0.070 74 Proposed lawn 0.100 Weighted Average 0.070 70.00% Pervious Area 0.030 30.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR104: BLL_PR104 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.100 ac Runoff Volume=0.011 af Runoff Depth=1.37" Tc=15.0 min CN=WQ 0.15 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 38HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR105: BLL_PR105 Runoff = 0.36 cfs @ 12.22 hrs, Volume= 0.027 af, Depth= 1.24" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.060 98 Proposed homes and road * 0.200 74 Proposed lawn 0.260 Weighted Average 0.200 76.92% Pervious Area 0.060 23.08% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR105: BLL_PR105 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.260 ac Runoff Volume=0.027 af Runoff Depth=1.24" Tc=15.0 min CN=WQ 0.36 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 39HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR106: BLL_PR106 Runoff = 0.13 cfs @ 12.20 hrs, Volume= 0.010 af, Depth= 1.51" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.030 98 Proposed homes and road * 0.050 74 Proposed lawn 0.080 Weighted Average 0.050 62.50% Pervious Area 0.030 37.50% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR106: BLL_PR106 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.080 ac Runoff Volume=0.010 af Runoff Depth=1.51" Tc=15.0 min CN=WQ 0.13 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 40HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR107: BLL_PR107 Runoff = 0.19 cfs @ 12.22 hrs, Volume= 0.015 af, Depth= 1.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.030 98 Proposed homes and road * 0.110 74 Proposed lawn 0.010 70 Woods, Good, HSG C 0.150 Weighted Average 0.120 80.00% Pervious Area 0.030 20.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR107: BLL_PR107 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.150 ac Runoff Volume=0.015 af Runoff Depth=1.18" Tc=15.0 min CN=WQ 0.19 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 41HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR108: BLL_PR108 Runoff = 0.22 cfs @ 12.22 hrs, Volume= 0.017 af, Depth= 1.28" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.040 98 Proposed homes and road * 0.120 74 Proposed lawn 0.160 Weighted Average 0.120 75.00% Pervious Area 0.040 25.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR108: BLL_PR108 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.25 0.24 0.23 0.22 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.160 ac Runoff Volume=0.017 af Runoff Depth=1.28" Tc=15.0 min CN=WQ 0.22 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 42HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR109: BLL_PR109 Runoff = 0.21 cfs @ 12.22 hrs, Volume= 0.016 af, Depth= 1.17" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.030 98 Proposed homes and road * 0.130 74 Proposed lawn 0.160 Weighted Average 0.130 81.25% Pervious Area 0.030 18.75% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR109: BLL_PR109 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.22 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.160 ac Runoff Volume=0.016 af Runoff Depth=1.17" Tc=15.0 min CN=WQ 0.21 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 43HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR110: BLL_PR110 Runoff = 0.45 cfs @ 12.22 hrs, Volume= 0.034 af, Depth= 1.13" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.060 98 Proposed homes and road * 0.300 74 Proposed lawn 0.360 Weighted Average 0.300 83.33% Pervious Area 0.060 16.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR110: BLL_PR110 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.5 0.48 0.46 0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.360 ac Runoff Volume=0.034 af Runoff Depth=1.13" Tc=15.0 min CN=WQ 0.45 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 44HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR111: BLL_PR111 Runoff = 0.35 cfs @ 12.22 hrs, Volume= 0.027 af, Depth= 1.15" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.050 98 Proposed homes and road * 0.230 74 Proposed lawn 0.280 Weighted Average 0.230 82.14% Pervious Area 0.050 17.86% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR111: BLL_PR111 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.280 ac Runoff Volume=0.027 af Runoff Depth=1.15" Tc=15.0 min CN=WQ 0.35 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 45HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR112: BLL_PR112 Runoff = 0.67 cfs @ 12.22 hrs, Volume= 0.047 af, Depth= 1.09" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.520 79 CN from Previous Model 0.520 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR112: BLL_PR112 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.520 ac Runoff Volume=0.047 af Runoff Depth=1.09" Tc=15.0 min CN=79 0.67 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 46HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR113: BLL_PR113 Runoff = 0.02 cfs @ 12.32 hrs, Volume= 0.002 af, Depth= 0.64" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description 0.030 70 Woods, Good, HSG C 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.5 180 0.0830 0.15 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_PR113: BLL_PR113 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.018 0.017 0.016 0.015 0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.030 ac Runoff Volume=0.002 af Runoff Depth=0.64" Flow Length=180' Slope=0.0830 '/' Tc=20.5 min CN=70 0.02 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 47HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR201: BLL_PR201 Runoff = 9.00 cfs @ 12.20 hrs, Volume= 0.682 af, Depth= 1.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 1.830 98 Proposed homes and road * 1.990 74 Proposed lawn * 0.570 98 Pond * 0.040 98 Proposed sidewalk * 0.040 98 Proposed trail 4.470 Weighted Average 1.990 44.52% Pervious Area 2.480 55.48% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR201: BLL_PR201 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=4.470 ac Runoff Volume=0.682 af Runoff Depth=1.83" Tc=15.0 min CN=WQ 9.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 48HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR202: BLL_PR202 Runoff = 1.17 cfs @ 12.22 hrs, Volume= 0.089 af, Depth= 1.16" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.170 98 Proposed homes and road * 0.730 74 Proposed lawn 0.020 70 Woods, Good, HSG C 0.920 Weighted Average 0.750 81.52% Pervious Area 0.170 18.48% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR202: BLL_PR202 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.920 ac Runoff Volume=0.089 af Runoff Depth=1.16" Tc=15.0 min CN=WQ 1.17 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 49HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR203: BLL_PR203 Runoff = 0.48 cfs @ 12.22 hrs, Volume= 0.037 af, Depth= 1.30" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.090 98 Proposed homes and road * 0.240 74 Proposed lawn 0.010 70 Woods, Good, HSG C 0.340 Weighted Average 0.250 73.53% Pervious Area 0.090 26.47% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR203: BLL_PR203 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.340 ac Runoff Volume=0.037 af Runoff Depth=1.30" Tc=15.0 min CN=WQ 0.48 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 50HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR204: BLL_PR204 Runoff = 1.68 cfs @ 12.22 hrs, Volume= 0.129 af, Depth= 1.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.250 98 Proposed homes and road * 0.810 74 Proposed lawn 0.340 70 Woods, Good, HSG C 1.400 Weighted Average 1.150 82.14% Pervious Area 0.250 17.86% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR204: BLL_PR204 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=1.400 ac Runoff Volume=0.129 af Runoff Depth=1.11" Tc=15.0 min CN=WQ 1.68 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 51HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR205: BLL_PR205 Runoff = 1.90 cfs @ 12.22 hrs, Volume= 0.146 af, Depth= 1.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.110 98 Proposed homes and road * 1.030 74 Proposed lawn * 0.110 98 Proposed trail 0.500 70 Woods, Good, HSG C 1.750 Weighted Average 1.530 87.43% Pervious Area 0.220 12.57% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR205: BLL_PR205 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=1.750 ac Runoff Volume=0.146 af Runoff Depth=1.00" Tc=15.0 min CN=WQ 1.90 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 52HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR206: BLL_PR206 Runoff = 0.40 cfs @ 12.22 hrs, Volume= 0.028 af, Depth= 1.09" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.310 79 CN from Previous Model 0.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR206: BLL_PR206 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.310 ac Runoff Volume=0.028 af Runoff Depth=1.09" Tc=15.0 min CN=79 0.40 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 53HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR301: BLL_PR301 Runoff = 5.27 cfs @ 12.39 hrs, Volume= 0.538 af, Depth= 0.71" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 2.760 74 Proposed lawn * 0.070 98 Proposed trail 6.200 70 Woods, Good, HSG C 9.030 Weighted Average 8.960 99.22% Pervious Area 0.070 0.78% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 24.4 300 0.1500 0.20 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_PR301: BLL_PR301 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=9.030 ac Runoff Volume=0.538 af Runoff Depth=0.71" Flow Length=300' Slope=0.1500 '/' Tc=24.4 min CN=WQ 5.27 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 54HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR302: BLL_PR302 Runoff = 0.77 cfs @ 12.53 hrs, Volume= 0.098 af, Depth= 0.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.040 98 Proposed homes and road * 0.320 74 Proposed lawn * 0.060 98 Proposed trail 1.000 70 Woods, Good, HSG C 1.420 Weighted Average 1.320 92.96% Pervious Area 0.100 7.04% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 33.9 300 0.0660 0.15 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" 2.6 270 0.1190 1.72 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 36.5 570 Total Subcatchment BLL_PR302: BLL_PR302 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=1.420 ac Runoff Volume=0.098 af Runoff Depth=0.83" Flow Length=570' Tc=36.5 min CN=WQ 0.77 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 55HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR303: BLL_PR303 Runoff = 0.16 cfs @ 12.68 hrs, Volume= 0.021 af, Depth= 1.09" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.230 79 CN from Previous Model 0.230 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 41.4 300 0.0400 0.12 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" 4.8 500 0.1190 1.72 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 46.2 800 Total Subcatchment BLL_PR303: BLL_PR303 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.230 ac Runoff Volume=0.021 af Runoff Depth=1.09" Flow Length=800' Tc=46.2 min CN=79 0.16 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 56HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR304: BLL_PR304 Runoff = 2.74 cfs @ 12.35 hrs, Volume= 0.263 af, Depth= 1.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.080 98 Existing County Road * 0.400 98 Existing homes * 2.000 74 Existing lawn 0.370 70 Woods, Good, HSG C 2.850 Weighted Average 2.370 83.16% Pervious Area 0.480 16.84% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 23.4 300 0.1660 0.21 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_PR304: BLL_PR304 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=2.850 ac Runoff Volume=0.263 af Runoff Depth=1.11" Flow Length=300' Slope=0.1660 '/' Tc=23.4 min CN=WQ 2.74 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 57HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR401: BLL_PR401 Runoff = 0.09 cfs @ 12.22 hrs, Volume= 0.007 af, Depth= 0.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.100 74 Existing lawn 0.100 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR401: BLL_PR401 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.1 0.095 0.09 0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.100 ac Runoff Volume=0.007 af Runoff Depth=0.83" Tc=15.0 min CN=74 0.09 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 58HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR402: BLL_PR402 Runoff = 0.18 cfs @ 12.20 hrs, Volume= 0.014 af, Depth= 1.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.030 98 Existing road * 0.020 98 Proposed homes and road * 0.040 74 Proposed lawn 0.090 Weighted Average 0.040 44.44% Pervious Area 0.050 55.56% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR402: BLL_PR402 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.090 ac Runoff Volume=0.014 af Runoff Depth=1.83" Tc=15.0 min CN=WQ 0.18 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 59HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR403: BLL_PR403 Runoff = 0.20 cfs @ 12.20 hrs, Volume= 0.015 af, Depth= 1.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.040 98 Proposed homes and road * 0.060 74 Proposed lawn * 0.010 98 Proposed sidewalk 0.110 Weighted Average 0.060 54.55% Pervious Area 0.050 45.45% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR403: BLL_PR403 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.22 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.110 ac Runoff Volume=0.015 af Runoff Depth=1.65" Tc=15.0 min CN=WQ 0.20 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 60HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR501: BLL_PR501 Runoff = 0.28 cfs @ 12.22 hrs, Volume= 0.021 af, Depth= 0.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.310 74 Proposed lawn 0.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR501: BLL_PR501 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.310 ac Runoff Volume=0.021 af Runoff Depth=0.83" Tc=15.0 min CN=74 0.28 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 61HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR502: BLL_PR502 Runoff = 0.58 cfs @ 12.20 hrs, Volume= 0.044 af, Depth= 1.97" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.100 74 Existing lawn * 0.170 98 Existing road and sidewalk 0.270 Weighted Average 0.100 37.04% Pervious Area 0.170 62.96% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR502: BLL_PR502 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.270 ac Runoff Volume=0.044 af Runoff Depth=1.97" Tc=15.0 min CN=WQ 0.58 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 62HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR503: BLL_PR503 Runoff = 0.01 cfs @ 12.22 hrs, Volume= 0.001 af, Depth= 0.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.010 74 Proposed lawn 0.010 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR503: BLL_PR503 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.01 0.009 0.009 0.008 0.008 0.007 0.007 0.006 0.006 0.005 0.005 0.004 0.004 0.003 0.003 0.002 0.002 0.001 0.001 0.000 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.010 ac Runoff Volume=0.001 af Runoff Depth=0.83" Tc=15.0 min CN=74 0.01 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 63HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR504: BLL_PR504 Runoff = 1.26 cfs @ 12.22 hrs, Volume= 0.095 af, Depth= 1.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.160 98 Existing homes * 0.870 74 Existing lawn 1.030 Weighted Average 0.870 84.47% Pervious Area 0.160 15.53% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR504: BLL_PR504 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=1.030 ac Runoff Volume=0.095 af Runoff Depth=1.11" Tc=15.0 min CN=WQ 1.26 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 64HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR505: BLL_PR505 Runoff = 0.03 cfs @ 12.10 hrs, Volume= 0.002 af, Depth= 0.64" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description 0.030 70 Woods, Good, HSG C 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.4 50 0.1200 0.13 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_PR505: BLL_PR505 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.030 ac Runoff Volume=0.002 af Runoff Depth=0.64" Flow Length=50' Slope=0.1200 '/' Tc=6.4 min CN=70 0.03 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 65HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR601: BLL_PR601 Runoff = 1.24 cfs @ 12.13 hrs, Volume= 0.078 af, Depth= 0.84" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.080 98 Existing County Road * 0.150 74 Proposed lawn * 0.180 74 wetland 0.700 70 Woods, Good, HSG C 1.110 Weighted Average 1.030 92.79% Pervious Area 0.080 7.21% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.1 180 0.0667 0.33 Sheet Flow, Range n= 0.130 P2= 2.87" Subcatchment BLL_PR601: BLL_PR601 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=1.110 ac Runoff Volume=0.078 af Runoff Depth=0.84" Flow Length=180' Slope=0.0667 '/' Tc=9.1 min CN=WQ 1.24 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 66HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BL_PR207: BLL_PR207 Runoff = 0.22 cfs @ 12.20 hrs, Volume= 0.017 af, Depth= 1.52" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.050 98 Proposed homes and road * 0.080 74 Proposed lawn 0.130 Weighted Average 0.080 61.54% Pervious Area 0.050 38.46% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BL_PR207: BLL_PR207 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.24 0.23 0.22 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.130 ac Runoff Volume=0.017 af Runoff Depth=1.52" Tc=15.0 min CN=WQ 0.22 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 67HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 10-1: LU 10-1 Runoff = 13.29 cfs @ 12.09 hrs, Volume= 0.641 af, Depth= 1.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 7.420 78 7.420 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 10-1: LU 10-1 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=7.420 ac Runoff Volume=0.641 af Runoff Depth=1.04" Tc=6.0 min CN=78 13.29 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 68HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-1: LU 2-1 Runoff = 41.77 cfs @ 12.77 hrs, Volume= 6.161 af, Depth= 0.93" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 79.621 76 79.621 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 52.0 Direct Entry, Subcatchment LU 2-1: LU 2-1 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=79.621 ac Runoff Volume=6.161 af Runoff Depth=0.93" Tc=52.0 min CN=76 41.77 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 69HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-10: LU 2-10 Runoff = 12.46 cfs @ 12.09 hrs, Volume= 0.641 af, Depth= 0.78" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 9.880 73 9.880 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 2-10: LU 2-10 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=9.880 ac Runoff Volume=0.641 af Runoff Depth=0.78" Tc=6.0 min CN=73 12.46 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 70HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-11: LU 2-11 Runoff = 24.15 cfs @ 12.17 hrs, Volume= 1.605 af, Depth= 0.88" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 21.970 75 21.970 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment LU 2-11: LU 2-11 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=21.970 ac Runoff Volume=1.605 af Runoff Depth=0.88" Tc=12.0 min CN=75 24.15 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 71HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-12: LU 2-12 Runoff = 11.30 cfs @ 12.09 hrs, Volume= 0.593 af, Depth= 0.73" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 9.720 72 9.720 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 2-12: LU 2-12 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=9.720 ac Runoff Volume=0.593 af Runoff Depth=0.73" Tc=6.0 min CN=72 11.30 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 72HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-13: LU 2-13 Runoff = 16.92 cfs @ 12.11 hrs, Volume= 0.939 af, Depth= 0.73" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 15.390 72 15.390 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-13: LU 2-13 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=15.390 ac Runoff Volume=0.939 af Runoff Depth=0.73" Tc=7.0 min CN=72 16.92 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 73HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-14: LU 2-14 Runoff = 20.63 cfs @ 12.19 hrs, Volume= 1.483 af, Depth= 0.69" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 25.920 71 25.920 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment LU 2-14: LU 2-14 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=25.920 ac Runoff Volume=1.483 af Runoff Depth=0.69" Tc=12.0 min CN=71 20.63 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 74HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-15: LU 2-15 Runoff = 5.70 cfs @ 12.07 hrs, Volume= 0.263 af, Depth= 0.73" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 4.310 72 4.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Subcatchment LU 2-15: LU 2-15 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=4.310 ac Runoff Volume=0.263 af Runoff Depth=0.73" Tc=4.0 min CN=72 5.70 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 75HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-16: LU 2-16 Runoff = 3.95 cfs @ 12.07 hrs, Volume= 0.176 af, Depth= 0.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 2.560 74 2.560 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Subcatchment LU 2-16: LU 2-16 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=2.560 ac Runoff Volume=0.176 af Runoff Depth=0.83" Tc=4.0 min CN=74 3.95 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 76HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-18: LU 2-18 Runoff = 12.99 cfs @ 12.10 hrs, Volume= 0.669 af, Depth= 0.98" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 8.180 77 8.180 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-18: LU 2-18 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=8.180 ac Runoff Volume=0.669 af Runoff Depth=0.98" Tc=7.0 min CN=77 12.99 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 77HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-2: LU 2-2 Runoff = 15.33 cfs @ 12.11 hrs, Volume= 0.821 af, Depth= 0.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 11.910 74 11.910 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-2: LU 2-2 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=11.910 ac Runoff Volume=0.821 af Runoff Depth=0.83" Tc=7.0 min CN=74 15.33 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 78HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-3: LU 2-3 Runoff = 37.83 cfs @ 12.26 hrs, Volume= 3.084 af, Depth= 0.78" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 47.530 73 47.530 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 17.0 Direct Entry, Subcatchment LU 2-3: LU 2-3 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=47.530 ac Runoff Volume=3.084 af Runoff Depth=0.78" Tc=17.0 min CN=73 37.83 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 79HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-4: LU 2-4 Runoff = 21.06 cfs @ 12.12 hrs, Volume= 1.122 af, Depth= 1.09" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 12.300 79 12.300 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment LU 2-4: LU 2-4 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=12.300 ac Runoff Volume=1.122 af Runoff Depth=1.09" Tc=8.0 min CN=79 21.06 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 80HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-5: LU 2-5 Runoff = 15.50 cfs @ 12.10 hrs, Volume= 0.791 af, Depth= 1.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 9.150 78 9.150 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-5: LU 2-5 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=9.150 ac Runoff Volume=0.791 af Runoff Depth=1.04" Tc=7.0 min CN=78 15.50 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 81HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-7: LU 2-7 Runoff = 14.14 cfs @ 12.10 hrs, Volume= 0.729 af, Depth= 0.98" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 8.904 77 8.904 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-7: LU 2-7 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=8.904 ac Runoff Volume=0.729 af Runoff Depth=0.98" Tc=7.0 min CN=77 14.14 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 82HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-8: LU 2-8 Runoff = 7.83 cfs @ 12.08 hrs, Volume= 0.378 af, Depth= 0.78" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 5.830 73 5.830 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment LU 2-8: LU 2-8 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=5.830 ac Runoff Volume=0.378 af Runoff Depth=0.78" Tc=5.0 min CN=73 7.83 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 83HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-9: LU 2-9 Runoff = 11.31 cfs @ 12.11 hrs, Volume= 0.642 af, Depth= 0.69" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 11.210 71 11.210 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-9: LU 2-9 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=11.210 ac Runoff Volume=0.642 af Runoff Depth=0.69" Tc=7.0 min CN=71 11.31 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 84HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W11S: W11 Runoff = 5.34 cfs @ 12.20 hrs, Volume= 0.394 af, Depth= 0.87" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 2.746 74 Wetland, HSG C * 0.481 70 Woods Good, HSG C * 1.503 71 Meadow, HSG C * 0.452 74 75% Grass cover Good, HSG C * 0.284 98 Impervious, HSG C 5.464 Weighted Average 5.181 94.81% Pervious Area 0.284 5.19% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.8 650 0.0380 0.79 Lag/CN Method, Subcatchment W11S: W11 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=5.464 ac Runoff Volume=0.394 af Runoff Depth=0.87" Flow Length=650' Slope=0.0380 '/' Tc=13.8 min CN=WQ 5.34 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 85HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W12S: W12 Runoff = 1.29 cfs @ 12.05 hrs, Volume= 0.053 af, Depth= 0.87" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.081 74 Wetland, HSG C * 0.290 70 Woods Good, HSG C * 0.316 74 75% Grass cover Good, HSG C * 0.047 98 Impervious, HSG C 0.734 Weighted Average 0.687 93.58% Pervious Area 0.047 6.42% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.1 130 0.1200 1.01 Lag/CN Method, Subcatchment W12S: W12 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.734 ac Runoff Volume=0.053 af Runoff Depth=0.87" Flow Length=130' Slope=0.1200 '/' Tc=2.1 min CN=WQ 1.29 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 86HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W13S: W13 Runoff = 2.16 cfs @ 12.14 hrs, Volume= 0.133 af, Depth= 0.92" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.038 74 Wetland, HSG C * 0.252 70 Woods Good, HSG C * 1.325 74 75% Grass cover Good, HSG C * 0.114 98 Impervious, HSG C 1.729 Weighted Average 1.615 93.39% Pervious Area 0.114 6.61% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 715 0.0900 1.27 Lag/CN Method, Subcatchment W13S: W13 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=1.729 ac Runoff Volume=0.133 af Runoff Depth=0.92" Flow Length=715' Slope=0.0900 '/' Tc=9.4 min CN=WQ 2.16 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 87HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W14S: W14 Runoff = 3.44 cfs @ 12.13 hrs, Volume= 0.210 af, Depth= 1.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.084 74 Wetland, HSG C * 0.638 70 Woods Good, HSG C * 0.014 71 Meadow, HSG C * 1.375 74 75% Grass cover Good, HSG C * 0.341 98 Impervious, HSG C 2.452 Weighted Average 2.112 86.11% Pervious Area 0.341 13.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.1 715 0.0900 1.30 Lag/CN Method, Subcatchment W14S: W14 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=2.452 ac Runoff Volume=0.210 af Runoff Depth=1.03" Flow Length=715' Slope=0.0900 '/' Tc=9.1 min CN=WQ 3.44 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 88HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W6S: W6 Runoff = 0.90 cfs @ 12.07 hrs, Volume= 0.041 af, Depth= 0.86" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.061 74 Wetland, HSG C * 0.392 71 Meadow, HSG C * 0.080 74 75% Grass cover Good, HSG C * 0.041 98 Impervious, HSG C 0.575 Weighted Average 0.534 92.88% Pervious Area 0.041 7.12% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.7 200 0.0800 0.90 Lag/CN Method, Subcatchment W6S: W6 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.575 ac Runoff Volume=0.041 af Runoff Depth=0.86" Flow Length=200' Slope=0.0800 '/' Tc=3.7 min CN=WQ 0.90 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 89HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Reach Pipe from W2 to W1: Pipe from Wetland 2 to Wetland 1 [52] Hint: Inlet/Outlet conditions not evaluated Inflow = 8.87 cfs @ 13.11 hrs, Volume= 4.512 af Outflow = 8.87 cfs @ 13.12 hrs, Volume= 4.512 af, Atten= 0%, Lag= 0.8 min Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Max. Velocity= 3.24 fps, Min. Travel Time= 1.1 min Avg. Velocity = 0.36 fps, Avg. Travel Time= 9.8 min Peak Storage= 580 cf @ 13.12 hrs Average Depth at Peak Storage= 1.23' Bank-Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 25.09 cfs 36.0" Round Pipe n= 0.013 Concrete pipe, bends & connections Length= 212.0' Slope= 0.0014 '/' Inlet Invert= 964.30', Outlet Invert= 964.00' Reach Pipe from W2 to W1: Pipe from Wetland 2 to Wetland 1 Inflow Outflow Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)9 8 7 6 5 4 3 2 1 0 Avg. Flow Depth=1.23' Max Vel=3.24 fps 36.0" Round Pipe n=0.013 L=212.0' S=0.0014 '/' Capacity=25.09 cfs 8.87 cfs 8.87 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 90HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 300P: Pond with IESF Inflow Area = 73.792 ac, 31.33% Impervious, Inflow Depth = 1.01" for 2y 24hr event Inflow = 66.21 cfs @ 12.27 hrs, Volume= 6.237 af Outflow = 2.70 cfs @ 15.31 hrs, Volume= 6.237 af, Atten= 96%, Lag= 182.3 min Primary = 2.70 cfs @ 15.31 hrs, Volume= 6.237 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 965.00' Surf.Area= 59,664 sf Storage= 254,284 cf Peak Elev= 967.18' @ 15.31 hrs Surf.Area= 92,467 sf Storage= 442,812 cf (188,528 cf above start) Plug-Flow detention time= 5,134.1 min calculated for 0.399 af (6% of inflow) Center-of-Mass det. time= 1,524.1 min ( 2,340.1 - 816.0 ) Volume Invert Avail.Storage Storage Description #1 955.00' 779,932 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 955.00 7,650 0 0 956.00 11,005 9,328 9,328 958.00 16,690 27,695 37,023 960.00 23,225 39,915 76,938 962.00 31,363 54,588 131,526 963.00 36,141 33,752 165,278 964.00 41,104 38,623 203,900 965.00 59,664 50,384 254,284 965.01 63,414 615 254,899 965.02 80,995 722 255,621 965.95 85,712 77,519 333,140 970.50 110,680 446,792 779,932 Device Routing Invert Outlet Devices #1 Primary 960.22'42.0" Round RCP_Round 42" L= 43.0' Ke= 0.500 Inlet / Outlet Invert= 960.22' / 960.00' S= 0.0051 '/' Cc= 0.900 n= 0.013, Flow Area= 9.62 sf #2 Device 1 965.95'Custom Weir, Cv= 2.62 (C= 3.28) Head (feet) 0.00 2.35 2.35 5.00 Width (feet) 0.50 0.50 7.00 7.00 #3 Device 2 960.00'42.0" Round RCP_Round 42" L= 10.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 960.00' / 960.00' S= 0.0000 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 9.62 sf #4 Device 1 963.00'6.0" Vert. 2 - 6" Draintile Outlet X 2.00 C= 0.600 #5 Device 4 965.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 965.00' - 965.01' Excluded Surface area = 59,664 sf #6 Secondary 960.22'36.0" Round RCP_Round 36" L= 43.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 960.22' / 960.00' S= 0.0051 '/' Cc= 0.900 Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 91HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf #7 Device 6 968.30'5.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Primary OutFlow Max=2.70 cfs @ 15.31 hrs HW=967.18' TW=957.54' (Dynamic Tailwater) 1=RCP_Round 42" (Passes 2.70 cfs of 105.75 cfs potential flow) 2=Custom Weir (Weir Controls 2.24 cfs @ 3.63 fps) 3=RCP_Round 42" (Passes 2.24 cfs of 70.09 cfs potential flow) 4=2 - 6" Draintile Outlet (Passes 0.46 cfs of 3.75 cfs potential flow) 5=Iron Enhanced Filtration (Exfiltration Controls 0.46 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=965.00' TW=957.00' (Dynamic Tailwater) 6=RCP_Round 36" (Passes 0.00 cfs of 59.59 cfs potential flow) 7=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) Pond 300P: Pond with IESF Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=73.792 ac Peak Elev=967.18' Storage=442,812 cf 66.21 cfs 2.70 cfs 2.70 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 92HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 400P: County pond with IESF Inflow Area = 4.800 ac, 45.05% Impervious, Inflow Depth = 1.61" for 2y 24hr event Inflow = 7.37 cfs @ 12.18 hrs, Volume= 0.643 af Outflow = 2.77 cfs @ 12.59 hrs, Volume= 0.643 af, Atten= 62%, Lag= 24.8 min Primary = 2.77 cfs @ 12.59 hrs, Volume= 0.643 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 984.00' Surf.Area= 10,824 sf Storage= 37,248 cf Peak Elev= 984.80' @ 12.59 hrs Surf.Area= 16,890 sf Storage= 50,099 cf (12,851 cf above start) Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= 603.2 min ( 1,394.5 - 791.3 ) Volume Invert Avail.Storage Storage Description #1 974.00' 185,067 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 974.00 485 0 0 975.00 868 677 677 976.00 1,334 1,101 1,778 978.00 2,522 3,856 5,634 980.00 4,030 6,552 12,186 982.00 5,839 9,869 22,055 983.00 6,862 6,351 28,405 984.00 10,824 8,843 37,248 984.01 11,174 110 37,358 984.02 15,262 132 37,490 984.45 16,243 6,774 44,264 985.00 17,254 9,212 53,475 986.00 20,050 18,652 72,127 987.00 22,870 21,460 93,587 991.00 22,870 91,480 185,067 Device Routing Invert Outlet Devices #1 Primary 982.00'15.0" Round RCP_Round 15" L= 29.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 982.00' / 982.00' S= 0.0000 '/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #2 Device 1 984.45'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 3.0' Crest Height #3 Device 2 982.00'15.0" Round RCP_Round 15" L= 22.0' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 981.75' / 982.00' S= -0.0114 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #4 Device 1 982.00'6.0" Vert. Draintile Outlet C= 0.600 #5 Device 4 984.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 984.00' - 984.01' Excluded Surface area = 10,824 sf Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 93HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Primary OutFlow Max=2.77 cfs @ 12.59 hrs HW=984.80' TW=978.69' (Dynamic Tailwater) 1=RCP_Round 15" (Passes 2.77 cfs of 8.96 cfs potential flow) 2=Sharp-Crested Rectangular Weir (Weir Controls 2.72 cfs @ 1.97 fps) 3=RCP_Round 15" (Passes 2.72 cfs of 3.51 cfs potential flow) 4=Draintile Outlet (Passes 0.04 cfs of 1.51 cfs potential flow) 5=Iron Enhanced Filtration (Exfiltration Controls 0.04 cfs) Pond 400P: County pond with IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=4.800 ac Peak Elev=984.80' Storage=50,099 cf 7.37 cfs 2.77 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 94HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 490: CB inlet [57] Hint: Peaked at 984.95' (Flood elevation advised) Inflow Area = 5.397 ac, 16.24% Impervious, Inflow Depth = 0.73" for 2y 24hr event Inflow = 2.92 cfs @ 12.31 hrs, Volume= 0.330 af Outflow = 2.92 cfs @ 12.31 hrs, Volume= 0.330 af, Atten= 0%, Lag= 0.1 min Primary = 2.92 cfs @ 12.31 hrs, Volume= 0.330 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 984.95' @ 12.31 hrs Device Routing Invert Outlet Devices #1 Primary 984.63'19.0" Horiz. Orifice/Grate C= 0.600 in 22.0" Grate (75% open area) Limited to weir flow at low heads #2 Secondary 985.10'8.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=2.92 cfs @ 12.31 hrs HW=984.95' TW=966.12' (Dynamic Tailwater) 1=Orifice/Grate (Weir Controls 2.92 cfs @ 1.85 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=984.63' TW=981.04' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 95HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 490: CB inlet Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=5.397 ac Peak Elev=984.95' 2.92 cfs 2.92 cfs 2.92 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 96HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 491P: CB inlet [57] Hint: Peaked at 981.04' (Flood elevation advised) Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 981.04' @ 0.00 hrs Device Routing Invert Outlet Devices #1 Primary 981.04'19.0" Horiz. Orifice/Grate C= 0.600 in 22.0" Grate (75% open area) Limited to weir flow at low heads Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=981.04' TW=965.00' (Dynamic Tailwater) 1=Orifice/Grate ( Controls 0.00 cfs) Pond 491P: CB inlet Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Peak Elev=981.04' 0.00 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 97HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 500P: IESF Inflow Area = 1.766 ac, 29.44% Impervious, Inflow Depth = 1.35" for 2y 24hr event Inflow = 3.32 cfs @ 12.13 hrs, Volume= 0.199 af Outflow = 2.17 cfs @ 12.22 hrs, Volume= 0.199 af, Atten= 35%, Lag= 5.7 min Primary = 2.17 cfs @ 12.22 hrs, Volume= 0.199 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 985.36' @ 12.22 hrs Surf.Area= 2,824 sf Storage= 2,960 cf Plug-Flow detention time= 544.7 min calculated for 0.199 af (100% of inflow) Center-of-Mass det. time= 544.7 min ( 1,343.9 - 799.2 ) Volume Invert Avail.Storage Storage Description #1 984.00' 6,740 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 984.00 0 0 0 984.01 200 1 1 984.02 1,600 9 10 985.00 2,468 1,993 2,003 985.50 2,960 1,357 3,360 986.00 3,520 1,620 4,980 986.50 3,520 1,760 6,740 Device Routing Invert Outlet Devices #1 Primary 982.00'6.0" Vert. Draintile Outlet C= 0.600 #2 Device 1 984.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 984.00' - 984.01' Excluded Surface area = 0 sf #3 Primary 985.30'60.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=2.17 cfs @ 12.22 hrs HW=985.36' TW=978.33' (Dynamic Tailwater) 1=Draintile Outlet (Passes 0.02 cfs of 1.67 cfs potential flow) 2=Iron Enhanced Filtration (Exfiltration Controls 0.02 cfs) 3=Broad-Crested Rectangular Weir (Weir Controls 2.15 cfs @ 0.58 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 98HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 500P: IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=1.766 ac Peak Elev=985.36' Storage=2,960 cf 3.32 cfs 2.17 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 99HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 600P: rain garden [86] Warning: Oscillations may require smaller dt (severity=1588) Inflow Area = 2.197 ac, 13.03% Impervious, Inflow Depth = 0.24" for 2y 24hr event Inflow = 0.69 cfs @ 12.15 hrs, Volume= 0.045 af Outflow = 0.03 cfs @ 15.04 hrs, Volume= 0.045 af, Atten= 95%, Lag= 173.6 min Discarded = 0.01 cfs @ 13.58 hrs, Volume= 0.040 af Primary = 0.02 cfs @ 15.04 hrs, Volume= 0.005 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 999.51' @ 15.04 hrs Surf.Area= 2,045 sf Storage= 1,239 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 1,218.1 min ( 2,039.2 - 821.1 ) Volume Invert Avail.Storage Storage Description #1 998.70' 6,330 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 998.70 1,000 0 0 999.50 2,045 1,218 1,218 1,000.00 2,045 1,023 2,240 1,002.00 2,045 4,090 6,330 Device Routing Invert Outlet Devices #1 Primary 999.50'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 998.70'0.200 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 13.58 hrs HW=999.50' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.02 cfs @ 15.04 hrs HW=999.51' TW=957.56' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.02 cfs @ 0.24 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 100HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 600P: rain garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=2.197 ac Peak Elev=999.51' Storage=1,239 cf 0.69 cfs 0.03 cfs 0.01 cfs 0.02 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 101HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 800P: rain garden Inflow Area = 1.094 ac, 15.23% Impervious, Inflow Depth = 1.04" for 2y 24hr event Inflow = 1.65 cfs @ 12.11 hrs, Volume= 0.095 af Outflow = 0.99 cfs @ 12.22 hrs, Volume= 0.095 af, Atten= 40%, Lag= 6.7 min Discarded = 0.01 cfs @ 12.22 hrs, Volume= 0.035 af Primary = 0.99 cfs @ 12.22 hrs, Volume= 0.060 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,001.62' @ 12.22 hrs Surf.Area= 1,745 sf Storage= 1,270 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 538.1 min ( 1,356.1 - 817.9 ) Volume Invert Avail.Storage Storage Description #1 1,000.70' 2,017 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,000.70 850 0 0 1,001.00 1,350 330 330 1,001.50 1,600 738 1,067 1,002.00 2,200 950 2,017 Device Routing Invert Outlet Devices #1 Primary 1,001.50'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 1,000.70'0.200 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.22 hrs HW=1,001.62' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.99 cfs @ 12.22 hrs HW=1,001.62' TW=999.33' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.99 cfs @ 0.81 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 102HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 800P: rain garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=1.094 ac Peak Elev=1,001.62' Storage=1,270 cf 1.65 cfs 0.99 cfs 0.01 cfs 0.99 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 103HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 900P: IESF Inflow Area = 1.215 ac, 34.66% Impervious, Inflow Depth = 1.45" for 2y 24hr event Inflow = 2.41 cfs @ 12.13 hrs, Volume= 0.147 af Outflow = 1.24 cfs @ 12.29 hrs, Volume= 0.147 af, Atten= 49%, Lag= 9.5 min Primary = 1.24 cfs @ 12.29 hrs, Volume= 0.147 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 992.14' @ 12.29 hrs Surf.Area= 2,750 sf Storage= 2,475 cf Plug-Flow detention time= 723.6 min calculated for 0.147 af (100% of inflow) Center-of-Mass det. time= 723.6 min ( 1,517.9 - 794.3 ) Volume Invert Avail.Storage Storage Description #1 991.00' 3,533 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.00 0 0 0 991.01 100 0 0 991.02 1,650 9 9 991.50 2,131 907 917 992.00 2,605 1,184 2,101 992.50 3,124 1,432 3,533 Device Routing Invert Outlet Devices #1 Primary 989.00'6.0" Vert. Draintile Outlet C= 0.600 #2 Device 1 991.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 991.00' - 991.01' Excluded Surface area = 0 sf #3 Primary 992.00'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=1.24 cfs @ 12.29 hrs HW=992.14' TW=987.28' (Dynamic Tailwater) 1=Draintile Outlet (Passes 0.01 cfs of 1.61 cfs potential flow) 2=Iron Enhanced Filtration (Exfiltration Controls 0.01 cfs) 3=Broad-Crested Rectangular Weir (Weir Controls 1.23 cfs @ 0.88 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 104HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 900P: IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Inflow Area=1.215 ac Peak Elev=992.14' Storage=2,475 cf 2.41 cfs 1.24 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 105HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB11: Bluffs at Lake Lucy CB 11 Inflow Area = 0.920 ac, 18.48% Impervious, Inflow Depth = 1.16" for 2y 24hr event Inflow = 1.17 cfs @ 12.22 hrs, Volume= 0.089 af Outflow = 1.16 cfs @ 12.22 hrs, Volume= 0.089 af, Atten= 1%, Lag= 0.5 min Primary = 1.16 cfs @ 12.22 hrs, Volume= 0.089 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 997.59' @ 12.22 hrs Surf.Area= 348 sf Storage= 18 cf Plug-Flow detention time= 2.6 min calculated for 0.089 af (100% of inflow) Center-of-Mass det. time= 2.6 min ( 821.3 - 818.7 ) Volume Invert Avail.Storage Storage Description #1 997.50' 56,626,370 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 997.50 40 0 0 998.00 1,700 435 435 1,000.50 3,500 6,500 6,935 10,002.00 9,080 56,619,435 56,626,370 Device Routing Invert Outlet Devices #1 Primary 997.50'48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 998.00'20.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=1.16 cfs @ 12.22 hrs HW=997.59' TW=964.50' (Dynamic Tailwater) 1=Grate (Weir Controls 1.16 cfs @ 1.00 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=997.50' TW=964.00' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 106HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB11: Bluffs at Lake Lucy CB 11 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=0.920 ac Peak Elev=997.59' Storage=18 cf 1.17 cfs 1.16 cfs 1.16 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 107HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB13A: Bluffs at Lake Lucy CB 13A Inflow Area = 0.130 ac, 38.46% Impervious, Inflow Depth = 1.52" for 2y 24hr event Inflow = 0.22 cfs @ 12.20 hrs, Volume= 0.017 af Outflow = 0.22 cfs @ 12.20 hrs, Volume= 0.017 af, Atten= 0%, Lag= 0.1 min Primary = 0.22 cfs @ 12.20 hrs, Volume= 0.017 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,014.04' @ 12.20 hrs Surf.Area= 28 sf Storage= 1 cf Plug-Flow detention time= 0.1 min calculated for 0.017 af (100% of inflow) Center-of-Mass det. time= 0.1 min ( 796.2 - 796.1 ) Volume Invert Avail.Storage Storage Description #1 1,014.00' 625 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,014.00 15 0 0 1,016.00 610 625 625 Device Routing Invert Outlet Devices #1 Primary 1,014.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 1,015.50'20.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.22 cfs @ 12.20 hrs HW=1,014.04' TW=964.45' (Dynamic Tailwater) 1=Grate (Weir Controls 0.22 cfs @ 0.69 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,014.00' TW=964.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 108HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB13A: Bluffs at Lake Lucy CB 13A Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=0.130 ac Peak Elev=1,014.04' Storage=1 cf 0.22 cfs 0.22 cfs 0.22 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 109HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB22: Bluffs at Lake Lucy CB 22 Inflow Area = 0.160 ac, 25.00% Impervious, Inflow Depth = 1.28" for 2y 24hr event Inflow = 0.22 cfs @ 12.22 hrs, Volume= 0.017 af Outflow = 0.22 cfs @ 12.22 hrs, Volume= 0.017 af, Atten= 0%, Lag= 0.1 min Primary = 0.22 cfs @ 12.22 hrs, Volume= 0.017 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 978.55' @ 12.22 hrs Surf.Area= 50 sf Storage= 2 cf Plug-Flow detention time= 0.3 min calculated for 0.017 af (100% of inflow) Center-of-Mass det. time= 0.3 min ( 810.2 - 809.9 ) Volume Invert Avail.Storage Storage Description #1 978.50' 145 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 978.50 40 0 0 979.50 250 145 145 Device Routing Invert Outlet Devices #1 Primary 978.50'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 979.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.22 cfs @ 12.22 hrs HW=978.55' TW=973.78' (Dynamic Tailwater) 1=Grate (Weir Controls 0.22 cfs @ 0.70 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=978.50' TW=957.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 110HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB22: Bluffs at Lake Lucy CB 22 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=0.160 ac Peak Elev=978.55' Storage=2 cf 0.22 cfs 0.22 cfs 0.22 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 111HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB23: Bluffs at Lake Lucy CB 23 Inflow Area = 0.160 ac, 18.75% Impervious, Inflow Depth = 1.17" for 2y 24hr event Inflow = 0.21 cfs @ 12.22 hrs, Volume= 0.016 af Outflow = 0.21 cfs @ 12.22 hrs, Volume= 0.016 af, Atten= 0%, Lag= 0.1 min Primary = 0.21 cfs @ 12.22 hrs, Volume= 0.016 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 978.54' @ 12.22 hrs Surf.Area= 44 sf Storage= 2 cf Plug-Flow detention time= 0.4 min calculated for 0.016 af (100% of inflow) Center-of-Mass det. time= 0.3 min ( 818.6 - 818.3 ) Volume Invert Avail.Storage Storage Description #1 978.50' 363 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 978.50 40 0 0 981.00 250 363 363 Device Routing Invert Outlet Devices #1 Primary 978.50'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 980.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.21 cfs @ 12.22 hrs HW=978.54' TW=973.78' (Dynamic Tailwater) 1=Grate (Weir Controls 0.21 cfs @ 0.68 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=978.50' TW=978.50' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 112HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB23: Bluffs at Lake Lucy CB 23 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.22 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Inflow Area=0.160 ac Peak Elev=978.54' Storage=2 cf 0.21 cfs 0.21 cfs 0.21 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 113HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB24: Bluffs at Lake Lucy CB 24 Inflow Area = 0.150 ac, 20.00% Impervious, Inflow Depth = 1.18" for 2y 24hr event Inflow = 0.19 cfs @ 12.22 hrs, Volume= 0.015 af Outflow = 0.19 cfs @ 12.22 hrs, Volume= 0.015 af, Atten= 0%, Lag= 0.1 min Primary = 0.19 cfs @ 12.22 hrs, Volume= 0.015 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 979.04' @ 12.22 hrs Surf.Area= 42 sf Storage= 2 cf Plug-Flow detention time= 0.3 min calculated for 0.015 af (100% of inflow) Center-of-Mass det. time= 0.3 min ( 816.9 - 816.6 ) Volume Invert Avail.Storage Storage Description #1 979.00' 180 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 979.00 40 0 0 981.00 140 180 180 Device Routing Invert Outlet Devices #1 Primary 979.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 980.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.19 cfs @ 12.22 hrs HW=979.04' TW=973.78' (Dynamic Tailwater) 1=Grate (Weir Controls 0.19 cfs @ 0.66 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=979.00' TW=978.50' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 114HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB24: Bluffs at Lake Lucy CB 24 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Inflow Area=0.150 ac Peak Elev=979.04' Storage=2 cf 0.19 cfs 0.19 cfs 0.19 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 115HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB25: Bluffs at Lake Lucy CB 25 Inflow Area = 0.080 ac, 37.50% Impervious, Inflow Depth = 1.51" for 2y 24hr event Inflow = 0.13 cfs @ 12.20 hrs, Volume= 0.010 af Outflow = 0.13 cfs @ 12.20 hrs, Volume= 0.010 af, Atten= 0%, Lag= 0.1 min Primary = 0.13 cfs @ 12.20 hrs, Volume= 0.010 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 981.03' @ 12.20 hrs Surf.Area= 43 sf Storage= 1 cf Plug-Flow detention time= 0.4 min calculated for 0.010 af (100% of inflow) Center-of-Mass det. time= 0.4 min ( 797.3 - 796.9 ) Volume Invert Avail.Storage Storage Description #1 981.00' 90 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 981.00 40 0 0 982.00 140 90 90 Device Routing Invert Outlet Devices #1 Primary 981.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 981.80'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.13 cfs @ 12.20 hrs HW=981.03' TW=973.74' (Dynamic Tailwater) 1=Grate (Weir Controls 0.13 cfs @ 0.58 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=981.00' TW=979.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 116HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB25: Bluffs at Lake Lucy CB 25 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Inflow Area=0.080 ac Peak Elev=981.03' Storage=1 cf 0.13 cfs 0.13 cfs 0.13 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 117HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB26: Bluffs at Lake Lucy CB 26 Inflow Area = 0.260 ac, 23.08% Impervious, Inflow Depth = 1.24" for 2y 24hr event Inflow = 0.36 cfs @ 12.22 hrs, Volume= 0.027 af Outflow = 0.36 cfs @ 12.22 hrs, Volume= 0.027 af, Atten= 0%, Lag= 0.1 min Primary = 0.36 cfs @ 12.22 hrs, Volume= 0.027 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 983.06' @ 12.22 hrs Surf.Area= 87 sf Storage= 4 cf Plug-Flow detention time= 0.3 min calculated for 0.027 af (100% of inflow) Center-of-Mass det. time= 0.3 min ( 812.6 - 812.3 ) Volume Invert Avail.Storage Storage Description #1 983.00' 594 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 983.00 40 0 0 984.20 950 594 594 Device Routing Invert Outlet Devices #1 Primary 983.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 984.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.36 cfs @ 12.22 hrs HW=983.06' TW=973.78' (Dynamic Tailwater) 1=Grate (Weir Controls 0.36 cfs @ 0.81 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=983.00' TW=981.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 118HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB26: Bluffs at Lake Lucy CB 26 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=0.260 ac Peak Elev=983.06' Storage=4 cf 0.36 cfs 0.36 cfs 0.36 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 119HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB27: Bluffs at Lake Lucy CB 27 Inflow Area = 0.360 ac, 16.67% Impervious, Inflow Depth = 1.13" for 2y 24hr event Inflow = 0.45 cfs @ 12.22 hrs, Volume= 0.034 af Outflow = 0.45 cfs @ 12.22 hrs, Volume= 0.034 af, Atten= 0%, Lag= 0.1 min Primary = 0.45 cfs @ 12.22 hrs, Volume= 0.034 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 986.07' @ 12.22 hrs Surf.Area= 47 sf Storage= 3 cf Plug-Flow detention time= 0.2 min calculated for 0.034 af (100% of inflow) Center-of-Mass det. time= 0.2 min ( 821.7 - 821.5 ) Volume Invert Avail.Storage Storage Description #1 986.00' 90 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 986.00 40 0 0 987.00 140 90 90 Device Routing Invert Outlet Devices #1 Primary 986.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 987.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.45 cfs @ 12.22 hrs HW=986.07' TW=973.78' (Dynamic Tailwater) 1=Grate (Weir Controls 0.45 cfs @ 0.88 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=986.00' TW=983.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 120HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB27: Bluffs at Lake Lucy CB 27 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=0.360 ac Peak Elev=986.07' Storage=3 cf 0.45 cfs 0.45 cfs 0.45 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 121HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB28: Bluffs at Lake Lucy CB 28 Inflow Area = 0.280 ac, 17.86% Impervious, Inflow Depth = 1.15" for 2y 24hr event Inflow = 0.35 cfs @ 12.22 hrs, Volume= 0.027 af Outflow = 0.35 cfs @ 12.22 hrs, Volume= 0.027 af, Atten= 0%, Lag= 0.1 min Primary = 0.35 cfs @ 12.22 hrs, Volume= 0.027 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 995.06' @ 12.22 hrs Surf.Area= 87 sf Storage= 4 cf Plug-Flow detention time= 0.3 min calculated for 0.027 af (100% of inflow) Center-of-Mass det. time= 0.3 min ( 820.0 - 819.6 ) Volume Invert Avail.Storage Storage Description #1 995.00' 594 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 995.00 40 0 0 996.20 950 594 594 Device Routing Invert Outlet Devices #1 Primary 995.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 996.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.35 cfs @ 12.22 hrs HW=995.06' TW=973.78' (Dynamic Tailwater) 1=Grate (Weir Controls 0.35 cfs @ 0.81 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=995.00' TW=986.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 122HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB28: Bluffs at Lake Lucy CB 28 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=0.280 ac Peak Elev=995.06' Storage=4 cf 0.35 cfs 0.35 cfs 0.35 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 123HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB30: Bluffs at Lake Lucy CB 30 Inflow Area = 0.250 ac, 16.00% Impervious, Inflow Depth = 1.11" for 2y 24hr event Inflow = 0.30 cfs @ 12.22 hrs, Volume= 0.023 af Outflow = 0.30 cfs @ 12.22 hrs, Volume= 0.023 af, Atten= 0%, Lag= 0.1 min Primary = 0.30 cfs @ 12.22 hrs, Volume= 0.023 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,000.06' @ 12.22 hrs Surf.Area= 72 sf Storage= 3 cf Plug-Flow detention time= 0.4 min calculated for 0.023 af (100% of inflow) Center-of-Mass det. time= 0.3 min ( 822.9 - 822.6 ) Volume Invert Avail.Storage Storage Description #1 1,000.00' 1,240 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,000.00 40 0 0 1,002.00 1,200 1,240 1,240 Device Routing Invert Outlet Devices #1 Primary 1,000.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 1,001.00'20.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.30 cfs @ 12.22 hrs HW=1,000.06' TW=973.78' (Dynamic Tailwater) 1=Grate (Weir Controls 0.30 cfs @ 0.77 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,000.00' TW=997.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 124HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB30: Bluffs at Lake Lucy CB 30 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=0.250 ac Peak Elev=1,000.06' Storage=3 cf 0.30 cfs 0.30 cfs 0.30 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 125HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB37: Bluffs at Lake Lucy CB 37 Inflow Area = 1.260 ac, 6.35% Impervious, Inflow Depth = 1.01" for 2y 24hr event Inflow = 1.43 cfs @ 12.22 hrs, Volume= 0.107 af Outflow = 1.43 cfs @ 12.22 hrs, Volume= 0.107 af, Atten= 0%, Lag= 0.2 min Primary = 1.43 cfs @ 12.22 hrs, Volume= 0.107 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,004.16' @ 12.22 hrs Surf.Area= 225 sf Storage= 21 cf Plug-Flow detention time= 0.3 min calculated for 0.107 af (100% of inflow) Center-of-Mass det. time= 0.3 min ( 837.6 - 837.3 ) Volume Invert Avail.Storage Storage Description #1 1,004.00' 2,440 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,004.00 40 0 0 1,006.00 2,400 2,440 2,440 Device Routing Invert Outlet Devices #1 Primary 1,004.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 1,005.50'20.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=1.43 cfs @ 12.22 hrs HW=1,004.16' TW=973.78' (Dynamic Tailwater) 1=Grate (Weir Controls 1.43 cfs @ 1.29 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,004.00' TW=973.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 126HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB37: Bluffs at Lake Lucy CB 37 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=1.260 ac Peak Elev=1,004.16' Storage=21 cf 1.43 cfs 1.43 cfs 1.43 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 127HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB9: Bluffs at Lake Lucy CB 9 Inflow Area = 1.400 ac, 17.86% Impervious, Inflow Depth = 1.11" for 2y 24hr event Inflow = 1.68 cfs @ 12.22 hrs, Volume= 0.129 af Outflow = 1.68 cfs @ 12.22 hrs, Volume= 0.129 af, Atten= 0%, Lag= 0.1 min Primary = 1.68 cfs @ 12.22 hrs, Volume= 0.129 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,010.17' @ 12.22 hrs Surf.Area= 90 sf Storage= 11 cf Plug-Flow detention time= 0.2 min calculated for 0.129 af (100% of inflow) Center-of-Mass det. time= 0.2 min ( 820.2 - 820.0 ) Volume Invert Avail.Storage Storage Description #1 1,010.00' 650 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,010.00 40 0 0 1,012.00 610 650 650 Device Routing Invert Outlet Devices #1 Primary 1,010.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 1,012.00'20.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=1.68 cfs @ 12.22 hrs HW=1,010.17' TW=964.49' (Dynamic Tailwater) 1=Grate (Weir Controls 1.68 cfs @ 1.36 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,010.00' TW=964.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 128HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB9: Bluffs at Lake Lucy CB 9 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=1.400 ac Peak Elev=1,010.17' Storage=11 cf 1.68 cfs 1.68 cfs 1.68 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 129HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_Pond1: Bluffs at Lake Lucy Pond 1 Inflow Area = 10.000 ac, 36.90% Impervious, Inflow Depth = 1.49" for 2y 24hr event Inflow = 16.28 cfs @ 12.20 hrs, Volume= 1.241 af Outflow = 2.40 cfs @ 12.90 hrs, Volume= 1.240 af, Atten= 85%, Lag= 41.8 min Primary = 2.40 cfs @ 12.90 hrs, Volume= 1.240 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 973.00' Surf.Area= 21,004 sf Storage= 90,682 cf Peak Elev= 974.29' @ 12.90 hrs Surf.Area= 23,536 sf Storage= 119,396 cf (28,715 cf above start) Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= 313.8 min ( 1,111.1 - 797.3 ) Volume Invert Avail.Storage Storage Description #1 963.00' 333,459 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 963.00 2,140 0 0 964.00 3,250 2,695 2,695 966.00 5,742 8,992 11,687 968.00 8,547 14,289 25,976 970.00 11,621 20,168 46,144 972.00 14,943 26,564 72,708 973.00 21,004 17,974 90,682 974.00 22,948 21,976 112,658 976.00 27,007 49,955 162,613 978.00 31,892 58,899 221,512 980.00 39,370 71,262 292,774 981.00 42,000 40,685 333,459 Device Routing Invert Outlet Devices #1 Primary 970.50'27.0" Round OCS to Outlet L= 14.5' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 970.50' / 969.50' S= 0.0690 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 3.98 sf #2 Device 1 973.00'OCS Internal Weir, Cv= 2.62 (C= 3.28) Head (feet) 0.00 1.00 1.50 1.51 3.00 4.00 Width (feet) 0.50 0.50 0.50 4.00 4.00 4.00 #3 Device 2 970.50'15.0" Round Low Flow Pipe L= 30.4' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 970.00' / 970.50' S= -0.0164 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #4 Device 1 977.00'48.0" Horiz. OCS Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 979.10'8.0' long x 4.0' breadth EOF Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 130HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Primary OutFlow Max=2.40 cfs @ 12.90 hrs HW=974.29' TW=965.53' (Dynamic Tailwater) 1=OCS to Outlet (Passes 2.40 cfs of 39.07 cfs potential flow) 2=OCS Internal Weir (Weir Controls 2.40 cfs @ 3.72 fps) 3=Low Flow Pipe (Passes 2.40 cfs of 6.71 cfs potential flow) 4=OCS Grate ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=973.00' TW=969.90' (Dynamic Tailwater) 5=EOF ( Controls 0.00 cfs) Pond BLL_Pond1: Bluffs at Lake Lucy Pond 1 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=10.000 ac Peak Elev=974.29' Storage=119,396 cf 16.28 cfs 2.40 cfs 2.40 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 131HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_Pond2: Bluffs at Lake Lucy Pond 2 [86] Warning: Oscillations may require smaller dt (severity=994) Inflow Area = 9.320 ac, 34.98% Impervious, Inflow Depth = 1.45" for 2y 24hr event Inflow = 14.79 cfs @ 12.21 hrs, Volume= 1.128 af Outflow = 0.24 cfs @ 1.47 hrs, Volume= 1.128 af, Atten= 98%, Lag= 0.0 min Discarded = 0.24 cfs @ 1.47 hrs, Volume= 1.128 af Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 964.00' Surf.Area= 25,003 sf Storage= 19,002 cf Peak Elev= 965.31' @ 18.28 hrs Surf.Area= 28,698 sf Storage= 54,138 cf (35,136 cf above start) Plug-Flow detention time= 2,080.6 min calculated for 0.692 af (61% of inflow) Center-of-Mass det. time= 1,319.2 min ( 2,118.5 - 799.3 ) Volume Invert Avail.Storage Storage Description #1 958.00' 221,527 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 958.00 128 0 0 960.00 713 841 841 962.00 1,731 2,444 3,285 963.00 2,350 2,041 5,326 964.00 25,003 13,677 19,002 966.00 30,650 55,653 74,655 967.00 33,590 32,120 106,775 968.00 35,597 34,594 141,369 969.20 41,600 46,318 187,687 970.00 43,000 33,840 221,527 Device Routing Invert Outlet Devices #1 Primary 960.50'18.0" Round MH 16 to FES 15 L= 74.6' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 960.50' / 959.80' S= 0.0094 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.77 sf #2 Device 1 965.50'OCS Internal Weir, Cv= 2.62 (C= 3.28) Head (feet) 0.00 0.50 1.00 1.01 1.50 Width (feet) 0.50 0.50 0.50 4.00 4.00 #3 Device 2 961.50'15.0" Round Low Flow Pipe L= 32.2' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 961.50' / 961.50' S= 0.0000 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #4 Device 1 967.00'48.0" Horiz. OCS C= 0.600 Limited to weir flow at low heads #5 Discarded 964.00'0.24 cfs Infiltration when above 964.00' #6 Secondary 968.20'8.0' long x 4.0' breadth EOF Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 132HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Discarded OutFlow Max=0.24 cfs @ 1.47 hrs HW=964.00' (Free Discharge) 5=Infiltration (Exfiltration Controls 0.24 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=964.00' TW=957.00' (Dynamic Tailwater) 1=MH 16 to FES 15 (Passes 0.00 cfs of 14.55 cfs potential flow) 2=OCS Internal Weir ( Controls 0.00 cfs) 3=Low Flow Pipe ( Controls 0.00 cfs) 4=OCS ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=964.00' TW=957.00' (Dynamic Tailwater) 6=EOF ( Controls 0.00 cfs) Pond BLL_Pond2: Bluffs at Lake Lucy Pond 2 Inflow Outflow Discarded Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=9.320 ac Peak Elev=965.31' Storage=54,138 cf 14.79 cfs 0.24 cfs 0.24 cfs 0.00 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 133HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond CB-9: EX CB-9 [57] Hint: Peaked at 988.63' (Flood elevation advised) Inflow Area = 11.464 ac, 0.00% Impervious, Inflow Depth = 0.95" for 2y 24hr event Inflow = 3.43 cfs @ 12.57 hrs, Volume= 0.903 af Outflow = 3.43 cfs @ 12.57 hrs, Volume= 0.903 af, Atten= 0%, Lag= 0.1 min Primary = 3.43 cfs @ 12.57 hrs, Volume= 0.903 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 988.63' @ 12.57 hrs Device Routing Invert Outlet Devices #1 Primary 987.85'24.0" Round CMP_Round 24" L= 94.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 987.85' / 980.75' S= 0.0755 '/' Cc= 0.900 n= 0.025 Corrugated metal, Flow Area= 3.14 sf Primary OutFlow Max=3.43 cfs @ 12.57 hrs HW=988.63' TW=978.68' (Dynamic Tailwater) 1=CMP_Round 24" (Inlet Controls 3.43 cfs @ 3.01 fps) Pond CB-9: EX CB-9 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=11.464 ac Peak Elev=988.63' 24.0" Round Culvert n=0.025 L=94.0' S=0.0755 '/' 3.43 cfs 3.43 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 134HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond GB_CB27: Bluffs at Lake Lucy CB 29 Inflow Area = 0.100 ac, 30.00% Impervious, Inflow Depth = 1.37" for 2y 24hr event Inflow = 0.15 cfs @ 12.22 hrs, Volume= 0.011 af Outflow = 0.15 cfs @ 12.22 hrs, Volume= 0.011 af, Atten= 0%, Lag= 0.1 min Primary = 0.15 cfs @ 12.22 hrs, Volume= 0.011 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 997.03' @ 12.22 hrs Surf.Area= 43 sf Storage= 1 cf Plug-Flow detention time= 0.4 min calculated for 0.011 af (100% of inflow) Center-of-Mass det. time= 0.3 min ( 804.6 - 804.2 ) Volume Invert Avail.Storage Storage Description #1 997.00' 80 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 997.00 40 0 0 998.00 120 80 80 Device Routing Invert Outlet Devices #1 Primary 997.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 997.50'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.15 cfs @ 12.22 hrs HW=997.03' TW=973.78' (Dynamic Tailwater) 1=Grate (Weir Controls 0.15 cfs @ 0.61 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=997.00' TW=995.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 135HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond GB_CB27: Bluffs at Lake Lucy CB 29 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Inflow Area=0.100 ac Peak Elev=997.03' Storage=1 cf 0.15 cfs 0.15 cfs 0.15 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 136HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond LUCY: LAKE LUCY [40] Hint: Not Described (Outflow=Inflow) Inflow = 26.50 cfs @ 13.92 hrs, Volume= 56.067 af Primary = 26.50 cfs @ 13.92 hrs, Volume= 56.067 af, Atten= 0%, Lag= 0.1 min Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Pond LUCY: LAKE LUCY Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 26.50 cfs 26.50 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 137HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-1: P-LU 2-1 [86] Warning: Oscillations may require smaller dt (severity=58556) Inflow = 60.18 cfs @ 12.71 hrs, Volume= 19.186 af Outflow = 26.03 cfs @ 13.91 hrs, Volume= 55.784 af, Atten= 57%, Lag= 71.9 min Primary = 26.03 cfs @ 13.91 hrs, Volume= 55.784 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 957.61' @ 13.91 hrs Surf.Area= 345,209 sf Storage= 173,524 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 4,641.8 min ( 6,026.6 - 1,384.9 ) Volume Invert Avail.Storage Storage Description #1 957.00'263,128,940,839 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 957.00 8,105 0 0 958.00 557,600 282,853 282,853 960.00 1,540,893 2,098,493 2,381,346 962.00 2,214,005 3,754,898 6,136,244 96,400.00 3,300,000 263,122,804,595 263,128,940,839 Device Routing Invert Outlet Devices #1 Primary 957.00'20.0' long Broad-Crested Rectangular Weir X 0.00 Head (feet) 0.50 1.00 1.50 Coef. (English) 3.00 3.00 3.00 #2 Primary 956.50'Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 0.00 0.50 1.00 1.50 2.00 2.50 Width (feet) 2.00 6.00 16.00 25.00 37.00 45.00 Primary OutFlow Max=26.03 cfs @ 13.91 hrs HW=957.61' TW=0.00' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) 2=Custom Weir/Orifice (Weir Controls 26.03 cfs @ 2.76 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 138HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-1: P-LU 2-1 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)65 60 55 50 45 40 35 30 25 20 15 10 5 0 Peak Elev=957.61' Storage=173,524 cf 60.18 cfs 26.03 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 139HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-10: P-LU 2-10 Inflow Area = 9.880 ac, 0.00% Impervious, Inflow Depth = 0.78" for 2y 24hr event Inflow = 12.46 cfs @ 12.09 hrs, Volume= 0.641 af Outflow = 2.87 cfs @ 12.54 hrs, Volume= 0.476 af, Atten= 77%, Lag= 26.9 min Primary = 2.87 cfs @ 12.54 hrs, Volume= 0.476 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 972.89' @ 12.54 hrs Surf.Area= 0.101 ac Storage= 0.234 af Plug-Flow detention time= 178.0 min calculated for 0.476 af (74% of inflow) Center-of-Mass det. time= 84.0 min ( 936.1 - 852.1 ) Volume Invert Avail.Storage Storage Description #1 968.00' 1.289 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.009 0.000 0.000 972.00 0.070 0.158 0.158 974.00 0.140 0.210 0.368 976.00 0.220 0.360 0.728 978.00 0.341 0.561 1.289 Device Routing Invert Outlet Devices #1 Primary 972.10'18.0" Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=2.87 cfs @ 12.54 hrs HW=972.89' TW=971.02' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 2.87 cfs @ 3.03 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 140HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-10: P-LU 2-10 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=9.880 ac Peak Elev=972.89' Storage=0.234 af 12.46 cfs 2.87 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 141HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-11: P-LU 2-11 Inflow = 44.78 cfs @ 12.17 hrs, Volume= 3.516 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 971.15' @ 250.00 hrs Surf.Area= 2.731 ac Storage= 3.514 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 968.00' 93.400 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.360 0.000 0.000 970.00 1.000 1.360 1.360 972.00 4.000 5.000 6.360 976.00 12.000 32.000 38.360 980.00 15.520 55.040 93.400 Device Routing Invert Outlet Devices #1 Primary 972.01'15.0" Round Culvert L= 114.0' Ke= 0.500 Inlet / Outlet Invert= 972.01' / 971.97' S= 0.0004 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 1.23 sf Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=968.00' TW=969.90' (Dynamic Tailwater) 1=Culvert ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 142HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-11: P-LU 2-11 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)50 48 46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Peak Elev=971.15' Storage=3.514 af 15.0" Round Culvert n=0.011 L=114.0' S=0.0004 '/' 44.78 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 143HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-12: P-LU 2-12 Inflow Area = 9.720 ac, 0.00% Impervious, Inflow Depth = 0.73" for 2y 24hr event Inflow = 11.30 cfs @ 12.09 hrs, Volume= 0.593 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 976.16' @ 24.34 hrs Surf.Area= 0.205 ac Storage= 0.593 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 972.00' 2.680 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 972.00 0.080 0.000 0.000 978.00 0.260 1.020 1.020 980.00 0.430 0.690 1.710 982.00 0.540 0.970 2.680 Device Routing Invert Outlet Devices #1 Primary 978.00'18.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 980.00'100.0' long x 26.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=972.00' TW=968.00' (Dynamic Tailwater) 1=Orifice/Grate ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=972.00' TW=968.00' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 144HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-12: P-LU 2-12 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=9.720 ac Peak Elev=976.16' Storage=0.593 af 11.30 cfs 0.00 cfs 0.00 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 145HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-13: P-LU 2-13 Inflow Area = 15.390 ac, 0.00% Impervious, Inflow Depth = 0.73" for 2y 24hr event Inflow = 16.92 cfs @ 12.11 hrs, Volume= 0.939 af Outflow = 0.82 cfs @ 15.06 hrs, Volume= 0.427 af, Atten= 95%, Lag= 176.9 min Primary = 0.82 cfs @ 15.06 hrs, Volume= 0.427 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 989.97' @ 15.06 hrs Surf.Area= 0.254 ac Storage= 0.600 af Plug-Flow detention time= 413.7 min calculated for 0.427 af (45% of inflow) Center-of-Mass det. time= 289.4 min ( 1,145.6 - 856.2 ) Volume Invert Avail.Storage Storage Description #1 986.00' 2.750 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 986.00 0.054 0.000 0.000 989.60 0.230 0.511 0.511 993.00 0.450 1.156 1.667 994.00 0.540 0.495 2.162 995.00 0.635 0.587 2.750 Device Routing Invert Outlet Devices #1 Primary 989.60'24.0" Round Culvert L= 110.0' Ke= 0.500 Inlet / Outlet Invert= 989.60' / 983.00' S= 0.0600 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 3.14 sf Primary OutFlow Max=0.82 cfs @ 15.06 hrs HW=989.97' TW=970.69' (Dynamic Tailwater) 1=Culvert (Inlet Controls 0.82 cfs @ 2.07 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 146HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-13: P-LU 2-13 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=15.390 ac Peak Elev=989.97' Storage=0.600 af 24.0" Round Culvert n=0.011 L=110.0' S=0.0600 '/' 16.92 cfs 0.82 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 147HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-2: P-LU 2-2 [86] Warning: Oscillations may require smaller dt (severity=17) Inflow = 20.16 cfs @ 12.09 hrs, Volume= 3.432 af Outflow = 6.63 cfs @ 12.17 hrs, Volume= 3.432 af, Atten= 67%, Lag= 4.4 min Primary = 6.63 cfs @ 12.17 hrs, Volume= 3.432 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 969.90' Surf.Area= 0.094 ac Storage= 0.085 af Peak Elev= 971.15' @ 13.33 hrs Surf.Area= 0.933 ac Storage= 0.524 af (0.439 af above start) Plug-Flow detention time= 389.8 min calculated for 3.347 af (98% of inflow) Center-of-Mass det. time= 25.6 min ( 4,765.9 - 4,740.3 ) Volume Invert Avail.Storage Storage Description #1 968.00' 11.223 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.010 0.000 0.000 969.00 0.040 0.025 0.025 970.00 0.100 0.070 0.095 971.00 0.533 0.316 0.411 972.00 3.130 1.831 2.243 973.00 4.690 3.910 6.153 974.00 5.450 5.070 11.223 Device Routing Invert Outlet Devices #1 Primary 968.58'30.0" Round RCP_Round 30" L= 85.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 968.58' / 968.08' S= 0.0059 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 4.91 sf #2 Secondary 972.01'15.0" Round Culvert L= 114.0' Ke= 0.500 Inlet / Outlet Invert= 971.97' / 972.01' S= -0.0004 '/' Cc= 0.900 n= 0.011, Flow Area= 1.23 sf Primary OutFlow Max=6.53 cfs @ 12.17 hrs HW=970.69' TW=970.56' (Dynamic Tailwater) 1=RCP_Round 30" (Outlet Controls 6.53 cfs @ 1.99 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=969.90' TW=968.00' (Dynamic Tailwater) 2=Culvert ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 148HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-2: P-LU 2-2 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Peak Elev=971.15' Storage=0.524 af 20.16 cfs 6.63 cfs 6.63 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 149HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Inflow Area = 53.360 ac, 0.00% Impervious, Inflow Depth = 0.70" for 2y 24hr event Inflow = 37.83 cfs @ 12.26 hrs, Volume= 3.102 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 992.27' @ 250.00 hrs Surf.Area= 6.859 ac Storage= 3.102 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 991.90' 52.450 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 991.90 5.100 0.000 0.000 992.00 5.900 0.550 0.550 994.00 13.000 18.900 19.450 996.00 20.000 33.000 52.450 Device Routing Invert Outlet Devices #1 Primary 995.00'30.0' long Broad-Crested Rectangular Weir Head (feet) 0.50 1.00 Coef. (English) 2.80 2.80 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=991.90' TW=957.00' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 150HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=53.360 ac Peak Elev=992.27' Storage=3.102 af 37.83 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 151HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-4: P-LU 2-4 Inflow Area = 13.950 ac, 2.37% Impervious, Inflow Depth = 1.11" for 2y 24hr event Inflow = 22.61 cfs @ 12.12 hrs, Volume= 1.285 af Outflow = 8.83 cfs @ 12.36 hrs, Volume= 0.965 af, Atten= 61%, Lag= 14.4 min Primary = 5.79 cfs @ 12.36 hrs, Volume= 0.922 af Secondary = 3.03 cfs @ 12.36 hrs, Volume= 0.043 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 975.11' @ 12.36 hrs Surf.Area= 0.173 ac Storage= 0.494 af Plug-Flow detention time= 176.8 min calculated for 0.965 af (75% of inflow) Center-of-Mass det. time= 89.8 min ( 923.5 - 833.6 ) Volume Invert Avail.Storage Storage Description #1 970.00' 1.120 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 970.00 0.020 0.000 0.000 974.00 0.140 0.320 0.320 978.00 0.260 0.800 1.120 Device Routing Invert Outlet Devices #1 Primary 974.00'21.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 975.00'30.0' long x 15.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=5.79 cfs @ 12.36 hrs HW=975.11' TW=970.85' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 5.79 cfs @ 3.59 fps) Secondary OutFlow Max=3.03 cfs @ 12.36 hrs HW=975.11' TW=970.85' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir (Weir Controls 3.03 cfs @ 0.90 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 152HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-4: P-LU 2-4 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=13.950 ac Peak Elev=975.11' Storage=0.494 af 22.61 cfs 8.83 cfs 5.79 cfs 3.03 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 153HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-5: P-LU 2-5 Inflow Area = 9.150 ac, 0.00% Impervious, Inflow Depth = 1.04" for 2y 24hr event Inflow = 15.50 cfs @ 12.10 hrs, Volume= 0.791 af Outflow = 1.97 cfs @ 12.66 hrs, Volume= 0.810 af, Atten= 87%, Lag= 33.6 min Primary = 1.97 cfs @ 12.66 hrs, Volume= 0.810 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 965.00' Surf.Area= 0.200 ac Storage= 0.447 af Peak Elev= 965.52' @ 12.66 hrs Surf.Area= 0.351 ac Storage= 0.778 af (0.331 af above start) Plug-Flow detention time= 478.1 min calculated for 0.363 af (46% of inflow) Center-of-Mass det. time= 137.8 min ( 975.8 - 838.0 ) Volume Invert Avail.Storage Storage Description #1 956.00' 2.352 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 956.00 0.004 0.000 0.000 962.00 0.030 0.102 0.102 965.00 0.200 0.345 0.447 968.00 1.070 1.905 2.352 Device Routing Invert Outlet Devices #1 Primary 962.98'18.0" Round Culvert L= 30.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 962.98' / 962.83' S= 0.0050 '/' Cc= 0.900 n= 0.013, Flow Area= 1.77 sf #2 Device 1 964.83'15.0" Round Culvert L= 15.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 963.38' / 964.83' S= -0.0967 '/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #3 Device 1 966.00'18.0" W x 12.0" H Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.97 cfs @ 12.66 hrs HW=965.52' TW=957.28' (Dynamic Tailwater) 1=Culvert (Passes 1.97 cfs of 10.82 cfs potential flow) 2=Culvert (Inlet Controls 1.97 cfs @ 2.83 fps) 3=Orifice/Grate ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 154HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-5: P-LU 2-5 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=9.150 ac Peak Elev=965.52' Storage=0.778 af 15.50 cfs 1.97 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 155HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-6: Wetland 11 Inflow Area = 23.494 ac, 12.62% Impervious, Inflow Depth = 1.09" for 2y 24hr event Inflow = 11.07 cfs @ 12.23 hrs, Volume= 2.140 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 979.84' @ 250.00 hrs Surf.Area= 84,710 sf Storage= 93,177 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 978.00' 1,458,300 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 978.00 16,553 0 0 980.00 90,625 107,178 107,178 982.00 148,800 239,425 346,603 984.00 171,115 319,915 666,518 986.00 197,334 368,449 1,034,967 988.00 225,999 423,333 1,458,300 Device Routing Invert Outlet Devices #1 Primary 982.57'15.0" Round RCP_Round 15" L= 50.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 982.57' / 982.05' S= 0.0104 '/' Cc= 0.900 n= 0.013 Concrete sewer w/manholes & inlets, Flow Area= 1.23 sf Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=978.00' TW=965.00' (Dynamic Tailwater) 1=RCP_Round 15" ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 156HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-6: Wetland 11 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=23.494 ac Peak Elev=979.84' Storage=93,177 cf 15.0" Round Culvert n=0.013 L=50.0' S=0.0104 '/' 11.07 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 157HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-7: P-LU 2-7 Inflow Area = 8.904 ac, 0.00% Impervious, Inflow Depth = 0.98" for 2y 24hr event Inflow = 14.14 cfs @ 12.10 hrs, Volume= 0.729 af Outflow = 3.14 cfs @ 12.54 hrs, Volume= 0.728 af, Atten= 78%, Lag= 26.4 min Primary = 3.14 cfs @ 12.54 hrs, Volume= 0.728 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 995.27' Surf.Area= 7,683 sf Storage= 18,263 cf Peak Elev= 996.46' @ 12.54 hrs Surf.Area= 9,842 sf Storage= 29,328 cf (11,066 cf above start) Plug-Flow detention time= 443.4 min calculated for 0.309 af (42% of inflow) Center-of-Mass det. time= 104.1 min ( 945.0 - 840.9 ) Volume Invert Avail.Storage Storage Description #1 991.00' 117,493 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.00 871 0 0 995.27 7,683 18,263 18,263 996.00 8,932 6,064 24,327 998.00 12,906 21,838 46,165 1,000.00 18,379 31,285 77,450 1,002.00 21,664 40,043 117,493 Device Routing Invert Outlet Devices #1 Primary 995.27'12.0" Round RCP_Round 12" L= 60.8' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 995.27' / 994.07' S= 0.0197 '/' Cc= 0.900 n= 0.013, Flow Area= 0.79 sf Primary OutFlow Max=3.14 cfs @ 12.54 hrs HW=996.46' TW=988.63' (Dynamic Tailwater) 1=RCP_Round 12" (Inlet Controls 3.14 cfs @ 3.99 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 158HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-7: P-LU 2-7 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=8.904 ac Peak Elev=996.46' Storage=29,328 cf 12.0" Round Culvert n=0.013 L=60.8' S=0.0197 '/' 14.14 cfs 3.14 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 159HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-8: P-LU 2-8 Inflow Area = 5.830 ac, 0.00% Impervious, Inflow Depth = 0.78" for 2y 24hr event Inflow = 7.83 cfs @ 12.08 hrs, Volume= 0.378 af Outflow = 0.05 cfs @ 24.07 hrs, Volume= 0.018 af, Atten= 99%, Lag= 719.4 min Primary = 0.05 cfs @ 24.07 hrs, Volume= 0.018 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 996.10' @ 24.07 hrs Surf.Area= 0.144 ac Storage= 0.375 af Plug-Flow detention time= 1,289.0 min calculated for 0.018 af (5% of inflow) Center-of-Mass det. time= 1,151.2 min ( 2,002.3 - 851.1 ) Volume Invert Avail.Storage Storage Description #1 992.00' 0.720 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 992.00 0.040 0.000 0.000 996.00 0.140 0.360 0.360 998.00 0.220 0.360 0.720 Device Routing Invert Outlet Devices #1 Primary 996.00'12.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 997.00'50.0' long x 20.0' breadth Broad-Crested Rectangular Weir X 2.00 Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.05 cfs @ 24.07 hrs HW=996.10' TW=992.27' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 0.05 cfs @ 1.09 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=992.00' TW=991.90' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 160HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-8: P-LU 2-8 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=5.830 ac Peak Elev=996.10' Storage=0.375 af 7.83 cfs 0.05 cfs 0.05 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 161HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-9: P-LU 2-9 Inflow Area = 11.210 ac, 0.00% Impervious, Inflow Depth = 0.69" for 2y 24hr event Inflow = 11.31 cfs @ 12.11 hrs, Volume= 0.642 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 975.72' @ 24.39 hrs Surf.Area= 0.707 ac Storage= 0.642 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 975.00' 3.430 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 975.00 0.230 0.000 0.000 977.00 1.560 1.790 1.790 978.00 1.720 1.640 3.430 Device Routing Invert Outlet Devices #1 Primary 977.00'8.0" Vert. Orifice/Grate C= 0.580 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=975.00' TW=969.90' (Dynamic Tailwater) 1=Orifice/Grate ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 162HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-9: P-LU 2-9 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=11.210 ac Peak Elev=975.72' Storage=0.642 af 11.31 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 163HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU-2-16: P-LU-2-16 Inflow Area = 2.560 ac, 0.00% Impervious, Inflow Depth = 0.83" for 2y 24hr event Inflow = 3.95 cfs @ 12.07 hrs, Volume= 0.176 af Outflow = 0.33 cfs @ 13.07 hrs, Volume= 0.175 af, Atten= 92%, Lag= 59.7 min Primary = 0.33 cfs @ 13.07 hrs, Volume= 0.175 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 994.07' Surf.Area= 9,913 sf Storage= 902 cf Peak Elev= 994.35' @ 13.07 hrs Surf.Area= 10,815 sf Storage= 4,539 cf (3,637 cf above start) Plug-Flow detention time= 542.1 min calculated for 0.155 af (88% of inflow) Center-of-Mass det. time= 415.7 min ( 1,262.8 - 847.1 ) Volume Invert Avail.Storage Storage Description #1 994.00' 107,634 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 994.00 9,689 0 0 996.00 16,084 25,773 25,773 998.00 20,360 36,444 62,217 1,000.00 25,057 45,417 107,634 Device Routing Invert Outlet Devices #1 Primary 994.07'12.0" Round RCP_Round 12" L= 93.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 994.07' / 987.85' S= 0.0669 '/' Cc= 0.900 n= 0.013, Flow Area= 0.79 sf Primary OutFlow Max=0.33 cfs @ 13.07 hrs HW=994.35' TW=988.58' (Dynamic Tailwater) 1=RCP_Round 12" (Inlet Controls 0.33 cfs @ 1.81 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 164HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU-2-16: P-LU-2-16 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 Inflow Area=2.560 ac Peak Elev=994.35' Storage=4,539 cf 12.0" Round Culvert n=0.013 L=93.0' S=0.0669 '/' 3.95 cfs 0.33 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 165HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU10-1: P-LU 10-1 Inflow Area = 7.720 ac, 1.30% Impervious, Inflow Depth = 1.05" for 2y 24hr event Inflow = 13.57 cfs @ 12.09 hrs, Volume= 0.677 af Outflow = 0.52 cfs @ 15.05 hrs, Volume= 0.283 af, Atten= 96%, Lag= 177.4 min Primary = 0.52 cfs @ 15.05 hrs, Volume= 0.283 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 963.46' @ 15.05 hrs Surf.Area= 0.188 ac Storage= 0.460 af Plug-Flow detention time= 433.7 min calculated for 0.283 af (42% of inflow) Center-of-Mass det. time= 320.2 min ( 1,155.4 - 835.2 ) Volume Invert Avail.Storage Storage Description #1 958.00' 1.715 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 958.00 0.020 0.000 0.000 962.00 0.100 0.240 0.240 963.10 0.180 0.154 0.394 964.00 0.200 0.171 0.565 966.00 0.300 0.500 1.065 968.00 0.350 0.650 1.715 Device Routing Invert Outlet Devices #1 Primary 963.10'12.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 966.00'100.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=0.52 cfs @ 15.05 hrs HW=963.46' TW=0.00' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 0.52 cfs @ 2.04 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=958.00' TW=0.00' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 166HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU10-1: P-LU 10-1 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=7.720 ac Peak Elev=963.46' Storage=0.460 af 13.57 cfs 0.52 cfs 0.52 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 167HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W12: Wetland 12 Inflow Area = 0.734 ac, 6.42% Impervious, Inflow Depth = 0.87" for 2y 24hr event Inflow = 1.29 cfs @ 12.05 hrs, Volume= 0.053 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 993.73' @ 24.12 hrs Surf.Area= 0.086 ac Storage= 0.053 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 992.50' 0.430 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 992.50 0.002 0.000 0.000 993.00 0.035 0.009 0.009 993.50 0.070 0.026 0.035 994.00 0.104 0.043 0.079 994.50 0.134 0.059 0.138 995.00 0.171 0.076 0.215 995.50 0.210 0.095 0.310 996.00 0.269 0.120 0.430 Device Routing Invert Outlet Devices #1 Primary 994.00'15.0" Round RCP_Round 15" L= 45.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 994.00' / 993.82' S= 0.0040 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=992.50' TW=965.00' (Dynamic Tailwater) 1=RCP_Round 15" ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 168HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W12: Wetland 12 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=0.734 ac Peak Elev=993.73' Storage=0.053 af 15.0" Round Culvert n=0.013 L=45.0' S=0.0040 '/' 1.29 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 169HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W13: Wetland 13 Inflow Area = 1.729 ac, 6.61% Impervious, Inflow Depth = 0.92" for 2y 24hr event Inflow = 2.16 cfs @ 12.14 hrs, Volume= 0.133 af Outflow = 0.03 cfs @ 24.07 hrs, Volume= 0.006 af, Atten= 99%, Lag= 716.1 min Primary = 0.03 cfs @ 24.07 hrs, Volume= 0.006 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 993.01' @ 24.07 hrs Surf.Area= 10,215 sf Storage= 5,634 cf Plug-Flow detention time= 896.8 min calculated for 0.006 af (4% of inflow) Center-of-Mass det. time= 643.7 min ( 1,479.7 - 836.0 ) Volume Invert Avail.Storage Storage Description #1 991.50' 22,402 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.50 17 0 0 992.00 648 166 166 993.00 10,069 5,359 5,525 994.00 23,685 16,877 22,402 Device Routing Invert Outlet Devices #1 Primary 993.00'10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=0.03 cfs @ 24.07 hrs HW=993.01' TW=987.03' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.03 cfs @ 0.26 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 170HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W13: Wetland 13 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Inflow Area=1.729 ac Peak Elev=993.01' Storage=5,634 cf 2.16 cfs 0.03 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 171HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W14: Wetland 14 Inflow Area = 5.397 ac, 16.24% Impervious, Inflow Depth = 0.81" for 2y 24hr event Inflow = 3.46 cfs @ 12.13 hrs, Volume= 0.364 af Outflow = 2.92 cfs @ 12.31 hrs, Volume= 0.330 af, Atten= 15%, Lag= 10.7 min Primary = 2.92 cfs @ 12.31 hrs, Volume= 0.330 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 987.28' @ 12.31 hrs Surf.Area= 6,084 sf Storage= 2,836 cf Plug-Flow detention time= 296.3 min calculated for 0.330 af (91% of inflow) Center-of-Mass det. time= 69.4 min ( 1,183.5 - 1,114.0 ) Volume Invert Avail.Storage Storage Description #1 986.00' 27,529 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 986.00 261 0 0 986.50 1,045 327 327 987.00 3,560 1,151 1,478 987.50 8,040 2,900 4,378 988.00 9,380 4,355 8,733 988.50 11,195 5,144 13,877 989.00 13,765 6,240 20,117 989.50 15,884 7,412 27,529 Device Routing Invert Outlet Devices #1 Primary 987.00'8.0' long x 4.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Primary OutFlow Max=2.92 cfs @ 12.31 hrs HW=987.28' TW=984.95' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 2.92 cfs @ 1.30 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 172HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W14: Wetland 14 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=5.397 ac Peak Elev=987.28' Storage=2,836 cf 3.46 cfs 2.92 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 173HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W2: Wetland 2 Inflow = 20.27 cfs @ 12.11 hrs, Volume= 5.144 af Outflow = 6.48 cfs @ 13.28 hrs, Volume= 5.144 af, Atten= 68%, Lag= 70.2 min Primary = 6.48 cfs @ 13.28 hrs, Volume= 3.271 af Secondary = 0.41 cfs @ 11.65 hrs, Volume= 1.873 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 969.90' Surf.Area= 2,833 sf Storage= 1,514 cf Peak Elev= 971.14' @ 13.28 hrs Surf.Area= 41,432 sf Storage= 27,168 cf (25,654 cf above start) Plug-Flow detention time= 121.8 min calculated for 5.110 af (99% of inflow) Center-of-Mass det. time= 22.1 min ( 3,497.3 - 3,475.2 ) Volume Invert Avail.Storage Storage Description #1 967.00' 1,052,847 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 967.00 10 0 0 968.85 12 20 20 970.00 3,102 1,791 1,811 972.00 70,418 73,520 75,331 974.00 154,658 225,076 300,407 976.00 189,337 343,995 644,402 978.00 219,108 408,445 1,052,847 Device Routing Invert Outlet Devices #1 Primary 967.50'18.0" Round MH 44 to MH 41 L= 40.4' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 967.50' / 967.00' S= 0.0124 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.77 sf #2 Device 1 973.60'48.0" Horiz. OCS C= 0.600 Limited to weir flow at low heads #3 Device 1 967.70'12.0" Round FES 42 to MH 44 L= 13.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 967.70' / 967.50' S= 0.0154 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 0.79 sf #4 Device 3 969.90'20.0' long x 5.0' breadth Ditch Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #5 Secondary 968.58'30.0" Round Culvert to LU 2-2 L= 85.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 968.58' / 968.08' S= 0.0059 '/' Cc= 0.900 n= 0.012, Flow Area= 4.91 sf Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 174HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Primary OutFlow Max=6.48 cfs @ 13.28 hrs HW=971.14' TW=965.53' (Dynamic Tailwater) 1=MH 44 to MH 41 (Passes 6.48 cfs of 14.46 cfs potential flow) 2=OCS ( Controls 0.00 cfs) 3=FES 42 to MH 44 (Inlet Controls 6.48 cfs @ 8.25 fps) 4=Ditch Berm (Passes 6.48 cfs of 73.30 cfs potential flow) Secondary OutFlow Max=0.30 cfs @ 11.65 hrs HW=969.94' TW=969.94' (Dynamic Tailwater) 5=Culvert to LU 2-2 (Outlet Controls 0.30 cfs @ 0.16 fps) Pond W2: Wetland 2 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Peak Elev=971.14' Storage=27,168 cf 20.27 cfs 6.48 cfs 6.48 cfs 0.41 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 175HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W6: Wetland 6 Inflow Area = 1.668 ac, 12.44% Impervious, Inflow Depth = 0.73" for 2y 24hr event Inflow = 1.31 cfs @ 12.22 hrs, Volume= 0.101 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,000.16' @ 24.39 hrs Surf.Area= 6,011 sf Storage= 4,402 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 999.00' 16,680 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 999.00 2,453 0 0 999.50 3,157 1,403 1,403 1,000.00 5,185 2,086 3,488 1,000.50 7,715 3,225 6,713 1,001.00 10,073 4,447 11,160 1,001.50 12,007 5,520 16,680 Device Routing Invert Outlet Devices #1 Primary 1,001.00'50.0' long x 25.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=999.00' TW=998.70' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_Proposed Conditions Printed 9/23/2020Prepared by AE2S Page 176HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W6: Wetland 6 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=1.668 ac Peak Elev=1,000.16' Storage=4,402 cf 1.31 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 177HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Time span=0.00-250.00 hrs, dt=0.002 hrs, 125001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Sim-Route method - Pond routing by Sim-Route method Runoff Area=38.561 ac 45.60% Impervious Runoff Depth=2.81"Subcatchment 300S: 300 Flow Length=1,575' Slope=0.0350 '/' Tc=20.7 min CN=WQ Runoff=105.59 cfs 9.024 af Runoff Area=5.606 ac 29.33% Impervious Runoff Depth=2.39"Subcatchment 301S: 301 Flow Length=275' Slope=0.1030 '/' Tc=3.5 min CN=WQ Runoff=25.95 cfs 1.115 af Runoff Area=2.200 ac 77.27% Impervious Runoff Depth=3.53"Subcatchment 400S: Proposed CR 117 Tc=20.0 min CN=WQ Runoff=7.57 cfs 0.646 af Runoff Area=2.600 ac 17.79% Impervious Runoff Depth=2.09"Subcatchment 401S: 401 Flow Length=500' Slope=0.0500 '/' Tc=8.9 min CN=WQ Runoff=8.11 cfs 0.454 af Runoff Area=1.766 ac 29.44% Impervious Runoff Depth=2.44"Subcatchment 500S: 500 Flow Length=510' Slope=0.0400 '/' Tc=9.0 min CN=WQ Runoff=6.34 cfs 0.360 af Runoff Area=0.529 ac 14.88% Impervious Runoff Depth=2.00"Subcatchment 600S: 600 Flow Length=495' Slope=0.0400 '/' Tc=10.2 min CN=WQ Runoff=1.49 cfs 0.088 af Runoff Area=8.313 ac 0.56% Impervious Runoff Depth=1.60"Subcatchment 700S: 700 Flow Length=500' Slope=0.0900 '/' Tc=7.9 min CN=WQ Runoff=21.31 cfs 1.109 af Runoff Area=0.636 ac 16.77% Impervious Runoff Depth=2.04"Subcatchment 701S: 701 Flow Length=255' Slope=0.0400 '/' Tc=6.0 min CN=WQ Runoff=2.24 cfs 0.108 af Runoff Area=1.094 ac 15.23% Impervious Runoff Depth=2.04"Subcatchment 800S: 800 Flow Length=355' Slope=0.0400 '/' Tc=7.8 min CN=WQ Runoff=3.53 cfs 0.186 af Runoff Area=1.215 ac 34.66% Impervious Runoff Depth=2.57"Subcatchment 900S: 900 Flow Length=470' Slope=0.0300 '/' Tc=9.4 min CN=WQ Runoff=4.48 cfs 0.261 af Runoff Area=6.910 ac 46.89% Impervious Runoff Depth=2.81"Subcatchment BLL_PR101: BLL_PR101 Tc=15.0 min CN=WQ Runoff=22.13 cfs 1.620 af Runoff Area=0.740 ac 10.81% Impervious Runoff Depth=1.94"Subcatchment BLL_PR102: BLL_PR102 Tc=15.0 min CN=WQ Runoff=1.69 cfs 0.120 af Runoff Area=0.250 ac 16.00% Impervious Runoff Depth=2.14"Subcatchment BLL_PR103: BLL_PR103 Tc=15.0 min CN=WQ Runoff=0.63 cfs 0.045 af Runoff Area=0.100 ac 30.00% Impervious Runoff Depth=2.47"Subcatchment BLL_PR104: BLL_PR104 Tc=15.0 min CN=WQ Runoff=0.29 cfs 0.021 af Runoff Area=0.260 ac 23.08% Impervious Runoff Depth=2.31"Subcatchment BLL_PR105: BLL_PR105 Tc=15.0 min CN=WQ Runoff=0.70 cfs 0.050 af Runoff Area=0.080 ac 37.50% Impervious Runoff Depth=2.64"Subcatchment BLL_PR106: BLL_PR106 Tc=15.0 min CN=WQ Runoff=0.24 cfs 0.018 af Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 178HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=0.150 ac 20.00% Impervious Runoff Depth=2.23"Subcatchment BLL_PR107: BLL_PR107 Tc=15.0 min CN=WQ Runoff=0.39 cfs 0.028 af Runoff Area=0.160 ac 25.00% Impervious Runoff Depth=2.36"Subcatchment BLL_PR108: BLL_PR108 Tc=15.0 min CN=WQ Runoff=0.44 cfs 0.031 af Runoff Area=0.160 ac 18.75% Impervious Runoff Depth=2.22"Subcatchment BLL_PR109: BLL_PR109 Tc=15.0 min CN=WQ Runoff=0.42 cfs 0.030 af Runoff Area=0.360 ac 16.67% Impervious Runoff Depth=2.17"Subcatchment BLL_PR110: BLL_PR110 Tc=15.0 min CN=WQ Runoff=0.92 cfs 0.065 af Runoff Area=0.280 ac 17.86% Impervious Runoff Depth=2.20"Subcatchment BLL_PR111: BLL_PR111 Tc=15.0 min CN=WQ Runoff=0.72 cfs 0.051 af Runoff Area=0.520 ac 0.00% Impervious Runoff Depth=2.18"Subcatchment BLL_PR112: BLL_PR112 Tc=15.0 min CN=79 Runoff=1.40 cfs 0.095 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=1.51"Subcatchment BLL_PR113: BLL_PR113 Flow Length=180' Slope=0.0830 '/' Tc=20.5 min CN=70 Runoff=0.05 cfs 0.004 af Runoff Area=4.470 ac 55.48% Impervious Runoff Depth=3.04"Subcatchment BLL_PR201: BLL_PR201 Tc=15.0 min CN=WQ Runoff=15.41 cfs 1.132 af Runoff Area=0.920 ac 18.48% Impervious Runoff Depth=2.20"Subcatchment BLL_PR202: BLL_PR202 Tc=15.0 min CN=WQ Runoff=2.38 cfs 0.169 af Runoff Area=0.340 ac 26.47% Impervious Runoff Depth=2.38"Subcatchment BLL_PR203: BLL_PR203 Tc=15.0 min CN=WQ Runoff=0.94 cfs 0.067 af Runoff Area=1.400 ac 17.86% Impervious Runoff Depth=2.13"Subcatchment BLL_PR204: BLL_PR204 Tc=15.0 min CN=WQ Runoff=3.48 cfs 0.248 af Runoff Area=1.750 ac 12.57% Impervious Runoff Depth=2.00"Subcatchment BLL_PR205: BLL_PR205 Tc=15.0 min CN=WQ Runoff=4.12 cfs 0.291 af Runoff Area=0.310 ac 0.00% Impervious Runoff Depth=2.18"Subcatchment BLL_PR206: BLL_PR206 Tc=15.0 min CN=79 Runoff=0.84 cfs 0.056 af Runoff Area=9.030 ac 0.78% Impervious Runoff Depth=1.62"Subcatchment BLL_PR301: BLL_PR301 Flow Length=300' Slope=0.1500 '/' Tc=24.4 min CN=WQ Runoff=13.60 cfs 1.219 af Runoff Area=1.420 ac 7.04% Impervious Runoff Depth=1.75"Subcatchment BLL_PR302: BLL_PR302 Flow Length=570' Tc=36.5 min CN=WQ Runoff=1.83 cfs 0.208 af Runoff Area=0.230 ac 0.00% Impervious Runoff Depth=2.18"Subcatchment BLL_PR303: BLL_PR303 Flow Length=800' Tc=46.2 min CN=79 Runoff=0.34 cfs 0.042 af Runoff Area=2.850 ac 16.84% Impervious Runoff Depth=2.14"Subcatchment BLL_PR304: BLL_PR304 Flow Length=300' Slope=0.1660 '/' Tc=23.4 min CN=WQ Runoff=5.72 cfs 0.508 af Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 179HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=0.100 ac 0.00% Impervious Runoff Depth=1.80"Subcatchment BLL_PR401: BLL_PR401 Tc=15.0 min CN=74 Runoff=0.22 cfs 0.015 af Runoff Area=0.090 ac 55.56% Impervious Runoff Depth=3.04"Subcatchment BLL_PR402: BLL_PR402 Tc=15.0 min CN=WQ Runoff=0.31 cfs 0.023 af Runoff Area=0.110 ac 45.45% Impervious Runoff Depth=2.81"Subcatchment BLL_PR403: BLL_PR403 Tc=15.0 min CN=WQ Runoff=0.35 cfs 0.026 af Runoff Area=0.310 ac 0.00% Impervious Runoff Depth=1.80"Subcatchment BLL_PR501: BLL_PR501 Tc=15.0 min CN=74 Runoff=0.68 cfs 0.046 af Runoff Area=0.270 ac 62.96% Impervious Runoff Depth=3.21"Subcatchment BLL_PR502: BLL_PR502 Tc=15.0 min CN=WQ Runoff=0.98 cfs 0.072 af Runoff Area=0.010 ac 0.00% Impervious Runoff Depth=1.80"Subcatchment BLL_PR503: BLL_PR503 Tc=15.0 min CN=74 Runoff=0.02 cfs 0.001 af Runoff Area=1.030 ac 15.53% Impervious Runoff Depth=2.14"Subcatchment BLL_PR504: BLL_PR504 Tc=15.0 min CN=WQ Runoff=2.61 cfs 0.184 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=1.51"Subcatchment BLL_PR505: BLL_PR505 Flow Length=50' Slope=0.1200 '/' Tc=6.4 min CN=70 Runoff=0.08 cfs 0.004 af Runoff Area=1.110 ac 7.21% Impervious Runoff Depth=1.78"Subcatchment BLL_PR601: BLL_PR601 Flow Length=180' Slope=0.0667 '/' Tc=9.1 min CN=WQ Runoff=2.93 cfs 0.165 af Runoff Area=0.130 ac 38.46% Impervious Runoff Depth=2.66"Subcatchment BL_PR207: BLL_PR207 Tc=15.0 min CN=WQ Runoff=0.40 cfs 0.029 af Runoff Area=7.420 ac 0.00% Impervious Runoff Depth=2.10"Subcatchment LU 10-1: LU 10-1 Tc=6.0 min CN=78 Runoff=28.50 cfs 1.301 af Runoff Area=79.621 ac 0.00% Impervious Runoff Depth=1.95"Subcatchment LU 2-1: LU 2-1 Tc=52.0 min CN=76 Runoff=95.39 cfs 12.924 af Runoff Area=9.880 ac 0.00% Impervious Runoff Depth=1.72"Subcatchment LU 2-10: LU 2-10 Tc=6.0 min CN=73 Runoff=30.54 cfs 1.419 af Runoff Area=21.970 ac 0.00% Impervious Runoff Depth=1.87"Subcatchment LU 2-11: LU 2-11 Tc=12.0 min CN=75 Runoff=56.01 cfs 3.427 af Runoff Area=9.720 ac 0.00% Impervious Runoff Depth=1.65"Subcatchment LU 2-12: LU 2-12 Tc=6.0 min CN=72 Runoff=28.63 cfs 1.338 af Runoff Area=15.390 ac 0.00% Impervious Runoff Depth=1.65"Subcatchment LU 2-13: LU 2-13 Tc=7.0 min CN=72 Runoff=42.90 cfs 2.119 af Runoff Area=25.920 ac 0.00% Impervious Runoff Depth=1.58"Subcatchment LU 2-14: LU 2-14 Tc=12.0 min CN=71 Runoff=54.63 cfs 3.417 af Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 180HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=4.310 ac 0.00% Impervious Runoff Depth=1.65"Subcatchment LU 2-15: LU 2-15 Tc=4.0 min CN=72 Runoff=14.27 cfs 0.593 af Runoff Area=2.560 ac 0.00% Impervious Runoff Depth=1.80"Subcatchment LU 2-16: LU 2-16 Tc=4.0 min CN=74 Runoff=9.30 cfs 0.383 af Runoff Area=8.180 ac 0.00% Impervious Runoff Depth=2.03"Subcatchment LU 2-18: LU 2-18 Tc=7.0 min CN=77 Runoff=28.55 cfs 1.381 af Runoff Area=11.910 ac 0.00% Impervious Runoff Depth=1.80"Subcatchment LU 2-2: LU 2-2 Tc=7.0 min CN=74 Runoff=36.49 cfs 1.784 af Runoff Area=47.530 ac 0.00% Impervious Runoff Depth=1.72"Subcatchment LU 2-3: LU 2-3 Tc=17.0 min CN=73 Runoff=93.04 cfs 6.829 af Runoff Area=12.300 ac 0.00% Impervious Runoff Depth=2.18"Subcatchment LU 2-4: LU 2-4 Tc=8.0 min CN=79 Runoff=44.17 cfs 2.239 af Runoff Area=9.150 ac 0.00% Impervious Runoff Depth=2.10"Subcatchment LU 2-5: LU 2-5 Tc=7.0 min CN=78 Runoff=33.25 cfs 1.605 af Runoff Area=8.904 ac 0.00% Impervious Runoff Depth=2.03"Subcatchment LU 2-7: LU 2-7 Tc=7.0 min CN=77 Runoff=31.08 cfs 1.503 af Runoff Area=5.830 ac 0.00% Impervious Runoff Depth=1.72"Subcatchment LU 2-8: LU 2-8 Tc=5.0 min CN=73 Runoff=19.09 cfs 0.838 af Runoff Area=11.210 ac 0.00% Impervious Runoff Depth=1.58"Subcatchment LU 2-9: LU 2-9 Tc=7.0 min CN=71 Runoff=29.72 cfs 1.478 af Runoff Area=5.464 ac 5.19% Impervious Runoff Depth=1.83"Subcatchment W11S: W11 Flow Length=650' Slope=0.0380 '/' Tc=13.8 min CN=WQ Runoff=12.50 cfs 0.833 af Runoff Area=0.734 ac 6.42% Impervious Runoff Depth=1.83"Subcatchment W12S: W12 Flow Length=130' Slope=0.1200 '/' Tc=2.1 min CN=WQ Runoff=2.91 cfs 0.112 af Runoff Area=1.729 ac 6.61% Impervious Runoff Depth=1.90"Subcatchment W13S: W13 Flow Length=715' Slope=0.0900 '/' Tc=9.4 min CN=WQ Runoff=4.89 cfs 0.274 af Runoff Area=2.452 ac 13.89% Impervious Runoff Depth=2.03"Subcatchment W14S: W14 Flow Length=715' Slope=0.0900 '/' Tc=9.1 min CN=WQ Runoff=7.40 cfs 0.415 af Runoff Area=0.575 ac 7.12% Impervious Runoff Depth=1.81"Subcatchment W6S: W6 Flow Length=200' Slope=0.0800 '/' Tc=3.7 min CN=WQ Runoff=2.08 cfs 0.087 af Avg. Flow Depth=1.72' Max Vel=3.74 fps Inflow=15.64 cfs 11.451 afReach Pipe from W2 to W1: Pipe from 36.0" Round Pipe n=0.013 L=212.0' S=0.0014 '/' Capacity=25.09 cfs Outflow=15.64 cfs 11.451 af Peak Elev=968.55' Storage=574,278 cf Inflow=121.79 cfs 10.961 afPond 300P: Pond with IESF Primary=9.93 cfs 10.697 af Secondary=1.99 cfs 0.264 af Outflow=11.93 cfs 10.961 af Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 181HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=985.24' Storage=57,653 cf Inflow=13.54 cfs 1.100 afPond 400P: County pond with IESF Outflow=5.29 cfs 1.100 af Peak Elev=985.25' Inflow=8.65 cfs 0.790 afPond 490: CB inlet Primary=7.47 cfs 0.774 af Secondary=1.18 cfs 0.016 af Outflow=8.65 cfs 0.790 af Peak Elev=981.21' Inflow=1.18 cfs 0.016 afPond 491P: CB inlet Outflow=1.18 cfs 0.016 af Peak Elev=985.43' Storage=3,144 cf Inflow=6.34 cfs 0.360 afPond 500P: IESF Outflow=6.30 cfs 0.360 af Peak Elev=999.60' Storage=1,431 cf Inflow=1.49 cfs 0.088 afPond 600P: rain garden Discarded=0.01 cfs 0.041 af Primary=0.78 cfs 0.048 af Outflow=0.79 cfs 0.089 af Peak Elev=1,001.77' Storage=1,537 cf Inflow=3.53 cfs 0.186 afPond 800P: rain garden Discarded=0.01 cfs 0.035 af Primary=3.30 cfs 0.151 af Outflow=3.30 cfs 0.186 af Peak Elev=992.30' Storage=2,937 cf Inflow=4.48 cfs 0.261 afPond 900P: IESF Outflow=4.05 cfs 0.261 af Peak Elev=997.65' Storage=43 cf Inflow=2.38 cfs 0.169 afPond BLL_CB11: Bluffs at Lake Lucy CB 11 Primary=2.38 cfs 0.169 af Secondary=0.00 cfs 0.000 af Outflow=2.38 cfs 0.169 af Peak Elev=1,014.07' Storage=2 cf Inflow=0.40 cfs 0.029 afPond BLL_CB13A: Bluffs at Lake Lucy CB 13A Primary=0.40 cfs 0.029 af Secondary=0.00 cfs 0.000 af Outflow=0.40 cfs 0.029 af Peak Elev=978.57' Storage=3 cf Inflow=0.44 cfs 0.031 afPond BLL_CB22: Bluffs at Lake Lucy CB 22 Primary=0.44 cfs 0.031 af Secondary=0.00 cfs 0.000 af Outflow=0.44 cfs 0.031 af Peak Elev=978.57' Storage=3 cf Inflow=0.42 cfs 0.030 afPond BLL_CB23: Bluffs at Lake Lucy CB 23 Primary=0.42 cfs 0.030 af Secondary=0.00 cfs 0.000 af Outflow=0.42 cfs 0.030 af Peak Elev=979.07' Storage=3 cf Inflow=0.39 cfs 0.028 afPond BLL_CB24: Bluffs at Lake Lucy CB 24 Primary=0.39 cfs 0.028 af Secondary=0.00 cfs 0.000 af Outflow=0.39 cfs 0.028 af Peak Elev=981.05' Storage=2 cf Inflow=0.24 cfs 0.018 afPond BLL_CB25: Bluffs at Lake Lucy CB 25 Primary=0.24 cfs 0.018 af Secondary=0.00 cfs 0.000 af Outflow=0.24 cfs 0.018 af Peak Elev=983.10' Storage=7 cf Inflow=0.70 cfs 0.050 afPond BLL_CB26: Bluffs at Lake Lucy CB 26 Primary=0.70 cfs 0.050 af Secondary=0.00 cfs 0.000 af Outflow=0.70 cfs 0.050 af Peak Elev=986.12' Storage=5 cf Inflow=0.92 cfs 0.065 afPond BLL_CB27: Bluffs at Lake Lucy CB 27 Primary=0.92 cfs 0.065 af Secondary=0.00 cfs 0.000 af Outflow=0.92 cfs 0.065 af Peak Elev=995.10' Storage=8 cf Inflow=0.72 cfs 0.051 afPond BLL_CB28: Bluffs at Lake Lucy CB 28 Primary=0.72 cfs 0.051 af Secondary=0.00 cfs 0.000 af Outflow=0.72 cfs 0.051 af Peak Elev=1,000.09' Storage=6 cf Inflow=0.63 cfs 0.045 afPond BLL_CB30: Bluffs at Lake Lucy CB 30 Primary=0.63 cfs 0.045 af Secondary=0.00 cfs 0.000 af Outflow=0.63 cfs 0.045 af Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 182HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=1,004.26' Storage=51 cf Inflow=3.10 cfs 0.214 afPond BLL_CB37: Bluffs at Lake Lucy CB 37 Primary=3.09 cfs 0.214 af Secondary=0.00 cfs 0.000 af Outflow=3.09 cfs 0.214 af Peak Elev=1,010.28' Storage=23 cf Inflow=3.48 cfs 0.248 afPond BLL_CB9: Bluffs at Lake Lucy CB 9 Primary=3.48 cfs 0.248 af Secondary=0.00 cfs 0.000 af Outflow=3.48 cfs 0.248 af Peak Elev=975.01' Storage=136,930 cf Inflow=30.00 cfs 2.176 afPond BLL_Pond1: Bluffs at Lake Lucy Primary=8.38 cfs 2.176 af Secondary=0.00 cfs 0.000 af Outflow=8.38 cfs 2.176 af Peak Elev=966.18' Storage=80,065 cf Inflow=27.52 cfs 1.993 afPond BLL_Pond2: Bluffs at Lake Lucy Discarded=0.24 cfs 1.418 af Primary=0.91 cfs 0.575 af Secondary=0.00 cfs 0.000 af Outflow=1.15 cfs 1.993 af Peak Elev=989.00' Inflow=6.86 cfs 1.885 afPond CB-9: EX CB-9 24.0" Round Culvert n=0.025 L=94.0' S=0.0755 '/' Outflow=6.86 cfs 1.885 af Peak Elev=997.05' Storage=2 cf Inflow=0.29 cfs 0.021 afPond GB_CB27: Bluffs at Lake Lucy CB 29 Primary=0.29 cfs 0.021 af Secondary=0.00 cfs 0.000 af Outflow=0.29 cfs 0.021 af Inflow=67.09 cfs 75.981 afPond LUCY: LAKE LUCY Primary=67.09 cfs 75.981 af Peak Elev=958.08' Storage=365,026 cf Inflow=137.45 cfs 40.776 afPond P-LU 2-1: P-LU 2-1 Outflow=64.11 cfs 75.012 af Peak Elev=974.52' Storage=0.446 af Inflow=30.54 cfs 1.419 afPond P-LU 2-10: P-LU 2-10 Outflow=10.98 cfs 1.254 af Peak Elev=972.48' Storage=8.491 af Inflow=112.91 cfs 8.769 afPond P-LU 2-11: P-LU 2-11 15.0" Round Culvert n=0.011 L=114.0' S=0.0004 '/' Outflow=0.40 cfs 1.873 af Peak Elev=978.32' Storage=1.107 af Inflow=28.63 cfs 1.338 afPond P-LU 2-12: P-LU 2-12 Primary=0.53 cfs 0.318 af Secondary=0.00 cfs 0.000 af Outflow=0.53 cfs 0.318 af Peak Elev=991.01' Storage=0.901 af Inflow=42.90 cfs 2.119 afPond P-LU 2-13: P-LU 2-13 24.0" Round Culvert n=0.011 L=110.0' S=0.0600 '/' Outflow=9.60 cfs 1.607 af Peak Elev=972.06' Storage=2.418 af Inflow=55.80 cfs 6.647 afPond P-LU 2-2: P-LU 2-2 Primary=10.86 cfs 6.646 af Secondary=0.01 cfs 0.000 af Outflow=10.86 cfs 6.646 af Peak Elev=992.71' Storage=7.306 af Inflow=93.04 cfs 7.306 afPond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Outflow=0.00 cfs 0.000 af Peak Elev=975.57' Storage=0.576 af Inflow=47.41 cfs 2.547 afPond P-LU 2-4: P-LU 2-4 Primary=9.68 cfs 1.484 af Secondary=34.55 cfs 0.743 af Outflow=44.23 cfs 2.227 af Peak Elev=966.15' Storage=1.178 af Inflow=33.25 cfs 1.605 afPond P-LU 2-5: P-LU 2-5 Outflow=5.21 cfs 1.624 af Peak Elev=980.74' Storage=181,937 cf Inflow=27.54 cfs 4.177 afPond P-LU 2-6: Wetland 11 15.0" Round Culvert n=0.013 L=50.0' S=0.0104 '/' Outflow=0.00 cfs 0.000 af Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 183HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=997.94' Storage=45,543 cf Inflow=31.08 cfs 1.503 afPond P-LU 2-7: P-LU 2-7 12.0" Round Culvert n=0.013 L=60.8' S=0.0197 '/' Outflow=5.57 cfs 1.502 af Peak Elev=996.74' Storage=0.475 af Inflow=19.09 cfs 0.838 afPond P-LU 2-8: P-LU 2-8 Primary=1.83 cfs 0.477 af Secondary=0.00 cfs 0.000 af Outflow=1.83 cfs 0.477 af Peak Elev=976.65' Storage=1.478 af Inflow=29.72 cfs 1.478 afPond P-LU 2-9: P-LU 2-9 Outflow=0.00 cfs 0.000 af Peak Elev=994.67' Storage=8,595 cf Inflow=9.30 cfs 0.383 afPond P-LU-2-16: P-LU-2-16 12.0" Round Culvert n=0.013 L=93.0' S=0.0669 '/' Outflow=1.29 cfs 0.382 af Peak Elev=964.66' Storage=0.707 af Inflow=29.03 cfs 1.365 afPond P-LU10-1: P-LU 10-1 Primary=3.89 cfs 0.970 af Secondary=0.00 cfs 0.000 af Outflow=3.89 cfs 0.970 af Peak Elev=994.12' Storage=0.092 af Inflow=2.91 cfs 0.112 afPond W12: Wetland 12 15.0" Round Culvert n=0.013 L=45.0' S=0.0040 '/' Outflow=0.04 cfs 0.033 af Peak Elev=993.10' Storage=6,590 cf Inflow=4.89 cfs 0.274 afPond W13: Wetland 13 Outflow=0.78 cfs 0.147 af Peak Elev=987.55' Storage=4,781 cf Inflow=11.13 cfs 0.823 afPond W14: Wetland 14 Outflow=8.65 cfs 0.790 af Peak Elev=972.04' Storage=77,997 cf Inflow=80.57 cfs 10.418 afPond W2: Wetland 2 Primary=7.41 cfs 9.276 af Secondary=6.49 cfs 1.142 af Outflow=13.50 cfs 10.418 af Peak Elev=1,000.92' Storage=10,355 cf Inflow=4.46 cfs 0.238 afPond W6: Wetland 6 Outflow=0.00 cfs 0.000 af Total Runoff Area = 401.189 ac Runoff Volume = 66.331 af Average Runoff Depth = 1.98" 92.11% Pervious = 369.521 ac 7.89% Impervious = 31.668 ac Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 184HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 300S: 300 Runoff = 105.59 cfs @ 12.28 hrs, Volume= 9.024 af, Depth= 2.81" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.755 70 Woods Good, HSG C * 0.637 71 Meadow, HSG C * 19.586 74 75% Grass cover Good, HSG C * 17.584 98 Impervious, HSG C 38.561 Weighted Average 20.977 54.40% Pervious Area 17.584 45.60% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.7 1,575 0.0350 1.27 Lag/CN Method, Subcatchment 300S: 300 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)115 110 105 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=38.561 ac Runoff Volume=9.024 af Runoff Depth=2.81" Flow Length=1,575' Slope=0.0350 '/' Tc=20.7 min CN=WQ 105.59 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 185HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 301S: 301 Runoff = 25.95 cfs @ 12.06 hrs, Volume= 1.115 af, Depth= 2.39" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.991 98 Water Surface, HSG C * 1.761 71 Meadow, HSG C * 2.200 74 75% Grass cover Good, HSG C * 0.654 98 Impervious, HSG C 5.606 Weighted Average 3.961 70.67% Pervious Area 1.644 29.33% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.5 275 0.1030 1.30 Lag/CN Method, Subcatchment 301S: 301 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=5.606 ac Runoff Volume=1.115 af Runoff Depth=2.39" Flow Length=275' Slope=0.1030 '/' Tc=3.5 min CN=WQ 25.95 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 186HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 400S: Proposed CR 117 Runoff = 7.57 cfs @ 12.25 hrs, Volume= 0.646 af, Depth= 3.53" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description 1.700 98 Paved roads w/curbs & sewers, HSG C 0.500 74 >75% Grass cover, Good, HSG C 2.200 Weighted Average 0.500 22.73% Pervious Area 1.700 77.27% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.0 Direct Entry, Subcatchment 400S: Proposed CR 117 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=2.200 ac Runoff Volume=0.646 af Runoff Depth=3.53" Tc=20.0 min CN=WQ 7.57 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 187HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 401S: 401 Runoff = 8.11 cfs @ 12.12 hrs, Volume= 0.454 af, Depth= 2.09" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.243 70 Woods Good, HSG C * 0.186 98 Water Surface, HSG C * 0.897 71 Meadow, HSG C * 0.997 74 75% Grass cover Good, HSG C * 0.276 98 Impervious, HSG C 2.600 Weighted Average 2.138 82.21% Pervious Area 0.462 17.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.9 500 0.0500 0.93 Lag/CN Method, Subcatchment 401S: 401 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=2.600 ac Runoff Volume=0.454 af Runoff Depth=2.09" Flow Length=500' Slope=0.0500 '/' Tc=8.9 min CN=WQ 8.11 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 188HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 500S: 500 Runoff = 6.34 cfs @ 12.13 hrs, Volume= 0.360 af, Depth= 2.44" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.097 71 Meadow, HSG C * 1.149 74 75% Grass cover Good, HSG C * 0.520 98 Impervious, HSG C 1.766 Weighted Average 1.246 70.56% Pervious Area 0.520 29.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.0 510 0.0400 0.95 Lag/CN Method, Subcatchment 500S: 500 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=1.766 ac Runoff Volume=0.360 af Runoff Depth=2.44" Flow Length=510' Slope=0.0400 '/' Tc=9.0 min CN=WQ 6.34 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 189HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 600S: 600 Runoff = 1.49 cfs @ 12.14 hrs, Volume= 0.088 af, Depth= 2.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.066 70 Woods Good, HSG C * 0.221 71 Meadow, HSG C * 0.163 74 75% Grass cover Good, HSG C * 0.079 98 Impervious, HSG C 0.529 Weighted Average 0.450 85.12% Pervious Area 0.079 14.88% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.2 495 0.0400 0.81 Lag/CN Method, Subcatchment 600S: 600 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.529 ac Runoff Volume=0.088 af Runoff Depth=2.00" Flow Length=495' Slope=0.0400 '/' Tc=10.2 min CN=WQ 1.49 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 190HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 700S: 700 Runoff = 21.31 cfs @ 12.11 hrs, Volume= 1.109 af, Depth= 1.60" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 2.897 70 Woods Good, HSG C * 4.268 71 Meadow, HSG C * 1.101 74 75% Grass cover Good, HSG C * 0.047 98 Impervious, HSG C 8.313 Weighted Average 8.266 99.44% Pervious Area 0.047 0.56% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.9 500 0.0900 1.05 Lag/CN Method, Subcatchment 700S: 700 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=8.313 ac Runoff Volume=1.109 af Runoff Depth=1.60" Flow Length=500' Slope=0.0900 '/' Tc=7.9 min CN=WQ 21.31 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 191HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 701S: 701 Runoff = 2.24 cfs @ 12.09 hrs, Volume= 0.108 af, Depth= 2.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.380 71 Meadow, HSG C * 0.149 74 75% Grass cover Good, HSG C * 0.107 98 Impervious, HSG C 0.636 Weighted Average 0.529 83.23% Pervious Area 0.107 16.77% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 255 0.0400 0.71 Lag/CN Method, Subcatchment 701S: 701 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.636 ac Runoff Volume=0.108 af Runoff Depth=2.04" Flow Length=255' Slope=0.0400 '/' Tc=6.0 min CN=WQ 2.24 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 192HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 800S: 800 Runoff = 3.53 cfs @ 12.11 hrs, Volume= 0.186 af, Depth= 2.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.484 71 Meadow, HSG C * 0.443 74 75% Grass cover Good, HSG C * 0.167 98 Impervious, HSG C 1.094 Weighted Average 0.927 84.77% Pervious Area 0.167 15.23% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.8 355 0.0400 0.76 Lag/CN Method, Subcatchment 800S: 800 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=1.094 ac Runoff Volume=0.186 af Runoff Depth=2.04" Flow Length=355' Slope=0.0400 '/' Tc=7.8 min CN=WQ 3.53 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 193HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 900S: 900 Runoff = 4.48 cfs @ 12.13 hrs, Volume= 0.261 af, Depth= 2.57" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.000 70 Woods Good, HSG C * 0.794 74 75% Grass cover Good, HSG C * 0.421 98 Impervious, HSG C 1.215 Weighted Average 0.794 65.34% Pervious Area 0.421 34.66% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 470 0.0300 0.83 Lag/CN Method, Subcatchment 900S: 900 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=1.215 ac Runoff Volume=0.261 af Runoff Depth=2.57" Flow Length=470' Slope=0.0300 '/' Tc=9.4 min CN=WQ 4.48 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 194HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR101: BLL_PR101 Runoff = 22.13 cfs @ 12.20 hrs, Volume= 1.620 af, Depth= 2.81" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.030 98 Existing County Road * 2.490 98 Proposed homes and road * 2.870 74 Proposed lawn * 0.560 98 Pond * 0.150 98 Proposed sidewalk * 0.010 98 Proposed trail 0.800 70 Woods, Good, HSG C 6.910 Weighted Average 3.670 53.11% Pervious Area 3.240 46.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR101: BLL_PR101 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=6.910 ac Runoff Volume=1.620 af Runoff Depth=2.81" Tc=15.0 min CN=WQ 22.13 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 195HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR102: BLL_PR102 Runoff = 1.69 cfs @ 12.22 hrs, Volume= 0.120 af, Depth= 1.94" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.080 98 Proposed homes and road * 0.400 74 Proposed lawn 0.260 70 Woods, Good, HSG C 0.740 Weighted Average 0.660 89.19% Pervious Area 0.080 10.81% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR102: BLL_PR102 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.740 ac Runoff Volume=0.120 af Runoff Depth=1.94" Tc=15.0 min CN=WQ 1.69 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 196HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR103: BLL_PR103 Runoff = 0.63 cfs @ 12.22 hrs, Volume= 0.045 af, Depth= 2.14" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.040 98 Proposed homes and road * 0.200 74 Proposed lawn 0.010 70 Woods, Good, HSG C 0.250 Weighted Average 0.210 84.00% Pervious Area 0.040 16.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR103: BLL_PR103 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.250 ac Runoff Volume=0.045 af Runoff Depth=2.14" Tc=15.0 min CN=WQ 0.63 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 197HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR104: BLL_PR104 Runoff = 0.29 cfs @ 12.20 hrs, Volume= 0.021 af, Depth= 2.47" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.030 98 Proposed homes and road * 0.070 74 Proposed lawn 0.100 Weighted Average 0.070 70.00% Pervious Area 0.030 30.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR104: BLL_PR104 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.100 ac Runoff Volume=0.021 af Runoff Depth=2.47" Tc=15.0 min CN=WQ 0.29 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 198HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR105: BLL_PR105 Runoff = 0.70 cfs @ 12.20 hrs, Volume= 0.050 af, Depth= 2.31" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.060 98 Proposed homes and road * 0.200 74 Proposed lawn 0.260 Weighted Average 0.200 76.92% Pervious Area 0.060 23.08% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR105: BLL_PR105 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.260 ac Runoff Volume=0.050 af Runoff Depth=2.31" Tc=15.0 min CN=WQ 0.70 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 199HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR106: BLL_PR106 Runoff = 0.24 cfs @ 12.20 hrs, Volume= 0.018 af, Depth= 2.64" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.030 98 Proposed homes and road * 0.050 74 Proposed lawn 0.080 Weighted Average 0.050 62.50% Pervious Area 0.030 37.50% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR106: BLL_PR106 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.080 ac Runoff Volume=0.018 af Runoff Depth=2.64" Tc=15.0 min CN=WQ 0.24 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 200HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR107: BLL_PR107 Runoff = 0.39 cfs @ 12.20 hrs, Volume= 0.028 af, Depth= 2.23" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.030 98 Proposed homes and road * 0.110 74 Proposed lawn 0.010 70 Woods, Good, HSG C 0.150 Weighted Average 0.120 80.00% Pervious Area 0.030 20.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR107: BLL_PR107 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.150 ac Runoff Volume=0.028 af Runoff Depth=2.23" Tc=15.0 min CN=WQ 0.39 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 201HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR108: BLL_PR108 Runoff = 0.44 cfs @ 12.20 hrs, Volume= 0.031 af, Depth= 2.36" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.040 98 Proposed homes and road * 0.120 74 Proposed lawn 0.160 Weighted Average 0.120 75.00% Pervious Area 0.040 25.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR108: BLL_PR108 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.48 0.46 0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.160 ac Runoff Volume=0.031 af Runoff Depth=2.36" Tc=15.0 min CN=WQ 0.44 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 202HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR109: BLL_PR109 Runoff = 0.42 cfs @ 12.21 hrs, Volume= 0.030 af, Depth= 2.22" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.030 98 Proposed homes and road * 0.130 74 Proposed lawn 0.160 Weighted Average 0.130 81.25% Pervious Area 0.030 18.75% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR109: BLL_PR109 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.46 0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.160 ac Runoff Volume=0.030 af Runoff Depth=2.22" Tc=15.0 min CN=WQ 0.42 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 203HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR110: BLL_PR110 Runoff = 0.92 cfs @ 12.22 hrs, Volume= 0.065 af, Depth= 2.17" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.060 98 Proposed homes and road * 0.300 74 Proposed lawn 0.360 Weighted Average 0.300 83.33% Pervious Area 0.060 16.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR110: BLL_PR110 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.360 ac Runoff Volume=0.065 af Runoff Depth=2.17" Tc=15.0 min CN=WQ 0.92 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 204HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR111: BLL_PR111 Runoff = 0.72 cfs @ 12.21 hrs, Volume= 0.051 af, Depth= 2.20" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.050 98 Proposed homes and road * 0.230 74 Proposed lawn 0.280 Weighted Average 0.230 82.14% Pervious Area 0.050 17.86% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR111: BLL_PR111 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.280 ac Runoff Volume=0.051 af Runoff Depth=2.20" Tc=15.0 min CN=WQ 0.72 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 205HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR112: BLL_PR112 Runoff = 1.40 cfs @ 12.22 hrs, Volume= 0.095 af, Depth= 2.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.520 79 CN from Previous Model 0.520 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR112: BLL_PR112 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.520 ac Runoff Volume=0.095 af Runoff Depth=2.18" Tc=15.0 min CN=79 1.40 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 206HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR113: BLL_PR113 Runoff = 0.05 cfs @ 12.30 hrs, Volume= 0.004 af, Depth= 1.51" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description 0.030 70 Woods, Good, HSG C 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.5 180 0.0830 0.15 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_PR113: BLL_PR113 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.05 0.048 0.046 0.044 0.042 0.04 0.038 0.036 0.034 0.032 0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.030 ac Runoff Volume=0.004 af Runoff Depth=1.51" Flow Length=180' Slope=0.0830 '/' Tc=20.5 min CN=70 0.05 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 207HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR201: BLL_PR201 Runoff = 15.41 cfs @ 12.20 hrs, Volume= 1.132 af, Depth= 3.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 1.830 98 Proposed homes and road * 1.990 74 Proposed lawn * 0.570 98 Pond * 0.040 98 Proposed sidewalk * 0.040 98 Proposed trail 4.470 Weighted Average 1.990 44.52% Pervious Area 2.480 55.48% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR201: BLL_PR201 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=4.470 ac Runoff Volume=1.132 af Runoff Depth=3.04" Tc=15.0 min CN=WQ 15.41 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 208HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR202: BLL_PR202 Runoff = 2.38 cfs @ 12.21 hrs, Volume= 0.169 af, Depth= 2.20" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.170 98 Proposed homes and road * 0.730 74 Proposed lawn 0.020 70 Woods, Good, HSG C 0.920 Weighted Average 0.750 81.52% Pervious Area 0.170 18.48% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR202: BLL_PR202 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.920 ac Runoff Volume=0.169 af Runoff Depth=2.20" Tc=15.0 min CN=WQ 2.38 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 209HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR203: BLL_PR203 Runoff = 0.94 cfs @ 12.20 hrs, Volume= 0.067 af, Depth= 2.38" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.090 98 Proposed homes and road * 0.240 74 Proposed lawn 0.010 70 Woods, Good, HSG C 0.340 Weighted Average 0.250 73.53% Pervious Area 0.090 26.47% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR203: BLL_PR203 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.340 ac Runoff Volume=0.067 af Runoff Depth=2.38" Tc=15.0 min CN=WQ 0.94 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 210HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR204: BLL_PR204 Runoff = 3.48 cfs @ 12.22 hrs, Volume= 0.248 af, Depth= 2.13" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.250 98 Proposed homes and road * 0.810 74 Proposed lawn 0.340 70 Woods, Good, HSG C 1.400 Weighted Average 1.150 82.14% Pervious Area 0.250 17.86% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR204: BLL_PR204 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=1.400 ac Runoff Volume=0.248 af Runoff Depth=2.13" Tc=15.0 min CN=WQ 3.48 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 211HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR205: BLL_PR205 Runoff = 4.12 cfs @ 12.22 hrs, Volume= 0.291 af, Depth= 2.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.110 98 Proposed homes and road * 1.030 74 Proposed lawn * 0.110 98 Proposed trail 0.500 70 Woods, Good, HSG C 1.750 Weighted Average 1.530 87.43% Pervious Area 0.220 12.57% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR205: BLL_PR205 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=1.750 ac Runoff Volume=0.291 af Runoff Depth=2.00" Tc=15.0 min CN=WQ 4.12 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 212HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR206: BLL_PR206 Runoff = 0.84 cfs @ 12.22 hrs, Volume= 0.056 af, Depth= 2.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.310 79 CN from Previous Model 0.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR206: BLL_PR206 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.9 0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.310 ac Runoff Volume=0.056 af Runoff Depth=2.18" Tc=15.0 min CN=79 0.84 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 213HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR301: BLL_PR301 Runoff = 13.60 cfs @ 12.34 hrs, Volume= 1.219 af, Depth= 1.62" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 2.760 74 Proposed lawn * 0.070 98 Proposed trail 6.200 70 Woods, Good, HSG C 9.030 Weighted Average 8.960 99.22% Pervious Area 0.070 0.78% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 24.4 300 0.1500 0.20 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_PR301: BLL_PR301 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=9.030 ac Runoff Volume=1.219 af Runoff Depth=1.62" Flow Length=300' Slope=0.1500 '/' Tc=24.4 min CN=WQ 13.60 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 214HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR302: BLL_PR302 Runoff = 1.83 cfs @ 12.53 hrs, Volume= 0.208 af, Depth= 1.75" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.040 98 Proposed homes and road * 0.320 74 Proposed lawn * 0.060 98 Proposed trail 1.000 70 Woods, Good, HSG C 1.420 Weighted Average 1.320 92.96% Pervious Area 0.100 7.04% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 33.9 300 0.0660 0.15 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" 2.6 270 0.1190 1.72 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 36.5 570 Total Subcatchment BLL_PR302: BLL_PR302 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=1.420 ac Runoff Volume=0.208 af Runoff Depth=1.75" Flow Length=570' Tc=36.5 min CN=WQ 1.83 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 215HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR303: BLL_PR303 Runoff = 0.34 cfs @ 12.63 hrs, Volume= 0.042 af, Depth= 2.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.230 79 CN from Previous Model 0.230 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 41.4 300 0.0400 0.12 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" 4.8 500 0.1190 1.72 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 46.2 800 Total Subcatchment BLL_PR303: BLL_PR303 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.230 ac Runoff Volume=0.042 af Runoff Depth=2.18" Flow Length=800' Tc=46.2 min CN=79 0.34 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 216HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR304: BLL_PR304 Runoff = 5.72 cfs @ 12.32 hrs, Volume= 0.508 af, Depth= 2.14" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.080 98 Existing County Road * 0.400 98 Existing homes * 2.000 74 Existing lawn 0.370 70 Woods, Good, HSG C 2.850 Weighted Average 2.370 83.16% Pervious Area 0.480 16.84% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 23.4 300 0.1660 0.21 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_PR304: BLL_PR304 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=2.850 ac Runoff Volume=0.508 af Runoff Depth=2.14" Flow Length=300' Slope=0.1660 '/' Tc=23.4 min CN=WQ 5.72 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 217HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR401: BLL_PR401 Runoff = 0.22 cfs @ 12.22 hrs, Volume= 0.015 af, Depth= 1.80" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.100 74 Existing lawn 0.100 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR401: BLL_PR401 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.24 0.23 0.22 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.100 ac Runoff Volume=0.015 af Runoff Depth=1.80" Tc=15.0 min CN=74 0.22 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 218HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR402: BLL_PR402 Runoff = 0.31 cfs @ 12.20 hrs, Volume= 0.023 af, Depth= 3.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.030 98 Existing road * 0.020 98 Proposed homes and road * 0.040 74 Proposed lawn 0.090 Weighted Average 0.040 44.44% Pervious Area 0.050 55.56% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR402: BLL_PR402 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.090 ac Runoff Volume=0.023 af Runoff Depth=3.04" Tc=15.0 min CN=WQ 0.31 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 219HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR403: BLL_PR403 Runoff = 0.35 cfs @ 12.20 hrs, Volume= 0.026 af, Depth= 2.81" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.040 98 Proposed homes and road * 0.060 74 Proposed lawn * 0.010 98 Proposed sidewalk 0.110 Weighted Average 0.060 54.55% Pervious Area 0.050 45.45% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR403: BLL_PR403 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.110 ac Runoff Volume=0.026 af Runoff Depth=2.81" Tc=15.0 min CN=WQ 0.35 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 220HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR501: BLL_PR501 Runoff = 0.68 cfs @ 12.22 hrs, Volume= 0.046 af, Depth= 1.80" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.310 74 Proposed lawn 0.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR501: BLL_PR501 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.310 ac Runoff Volume=0.046 af Runoff Depth=1.80" Tc=15.0 min CN=74 0.68 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 221HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR502: BLL_PR502 Runoff = 0.98 cfs @ 12.20 hrs, Volume= 0.072 af, Depth= 3.21" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.100 74 Existing lawn * 0.170 98 Existing road and sidewalk 0.270 Weighted Average 0.100 37.04% Pervious Area 0.170 62.96% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR502: BLL_PR502 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.270 ac Runoff Volume=0.072 af Runoff Depth=3.21" Tc=15.0 min CN=WQ 0.98 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 222HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR503: BLL_PR503 Runoff = 0.02 cfs @ 12.22 hrs, Volume= 0.001 af, Depth= 1.80" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.010 74 Proposed lawn 0.010 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR503: BLL_PR503 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.024 0.023 0.022 0.021 0.02 0.019 0.018 0.017 0.016 0.015 0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.010 ac Runoff Volume=0.001 af Runoff Depth=1.80" Tc=15.0 min CN=74 0.02 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 223HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR504: BLL_PR504 Runoff = 2.61 cfs @ 12.22 hrs, Volume= 0.184 af, Depth= 2.14" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.160 98 Existing homes * 0.870 74 Existing lawn 1.030 Weighted Average 0.870 84.47% Pervious Area 0.160 15.53% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR504: BLL_PR504 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=1.030 ac Runoff Volume=0.184 af Runoff Depth=2.14" Tc=15.0 min CN=WQ 2.61 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 224HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR505: BLL_PR505 Runoff = 0.08 cfs @ 12.10 hrs, Volume= 0.004 af, Depth= 1.51" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description 0.030 70 Woods, Good, HSG C 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.4 50 0.1200 0.13 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_PR505: BLL_PR505 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.030 ac Runoff Volume=0.004 af Runoff Depth=1.51" Flow Length=50' Slope=0.1200 '/' Tc=6.4 min CN=70 0.08 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 225HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR601: BLL_PR601 Runoff = 2.93 cfs @ 12.12 hrs, Volume= 0.165 af, Depth= 1.78" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.080 98 Existing County Road * 0.150 74 Proposed lawn * 0.180 74 wetland 0.700 70 Woods, Good, HSG C 1.110 Weighted Average 1.030 92.79% Pervious Area 0.080 7.21% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.1 180 0.0667 0.33 Sheet Flow, Range n= 0.130 P2= 2.87" Subcatchment BLL_PR601: BLL_PR601 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=1.110 ac Runoff Volume=0.165 af Runoff Depth=1.78" Flow Length=180' Slope=0.0667 '/' Tc=9.1 min CN=WQ 2.93 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 226HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BL_PR207: BLL_PR207 Runoff = 0.40 cfs @ 12.20 hrs, Volume= 0.029 af, Depth= 2.66" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.050 98 Proposed homes and road * 0.080 74 Proposed lawn 0.130 Weighted Average 0.080 61.54% Pervious Area 0.050 38.46% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BL_PR207: BLL_PR207 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.130 ac Runoff Volume=0.029 af Runoff Depth=2.66" Tc=15.0 min CN=WQ 0.40 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 227HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 10-1: LU 10-1 Runoff = 28.50 cfs @ 12.09 hrs, Volume= 1.301 af, Depth= 2.10" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 7.420 78 7.420 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 10-1: LU 10-1 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=7.420 ac Runoff Volume=1.301 af Runoff Depth=2.10" Tc=6.0 min CN=78 28.50 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 228HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-1: LU 2-1 Runoff = 95.39 cfs @ 12.71 hrs, Volume= 12.924 af, Depth= 1.95" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 79.621 76 79.621 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 52.0 Direct Entry, Subcatchment LU 2-1: LU 2-1 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)105 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=79.621 ac Runoff Volume=12.924 af Runoff Depth=1.95" Tc=52.0 min CN=76 95.39 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 229HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-10: LU 2-10 Runoff = 30.54 cfs @ 12.09 hrs, Volume= 1.419 af, Depth= 1.72" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 9.880 73 9.880 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 2-10: LU 2-10 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=9.880 ac Runoff Volume=1.419 af Runoff Depth=1.72" Tc=6.0 min CN=73 30.54 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 230HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-11: LU 2-11 Runoff = 56.01 cfs @ 12.17 hrs, Volume= 3.427 af, Depth= 1.87" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 21.970 75 21.970 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment LU 2-11: LU 2-11 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=21.970 ac Runoff Volume=3.427 af Runoff Depth=1.87" Tc=12.0 min CN=75 56.01 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 231HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-12: LU 2-12 Runoff = 28.63 cfs @ 12.09 hrs, Volume= 1.338 af, Depth= 1.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 9.720 72 9.720 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 2-12: LU 2-12 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=9.720 ac Runoff Volume=1.338 af Runoff Depth=1.65" Tc=6.0 min CN=72 28.63 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 232HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-13: LU 2-13 Runoff = 42.90 cfs @ 12.10 hrs, Volume= 2.119 af, Depth= 1.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 15.390 72 15.390 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-13: LU 2-13 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)48 46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=15.390 ac Runoff Volume=2.119 af Runoff Depth=1.65" Tc=7.0 min CN=72 42.90 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 233HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-14: LU 2-14 Runoff = 54.63 cfs @ 12.17 hrs, Volume= 3.417 af, Depth= 1.58" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 25.920 71 25.920 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment LU 2-14: LU 2-14 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=25.920 ac Runoff Volume=3.417 af Runoff Depth=1.58" Tc=12.0 min CN=71 54.63 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 234HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-15: LU 2-15 Runoff = 14.27 cfs @ 12.07 hrs, Volume= 0.593 af, Depth= 1.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 4.310 72 4.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Subcatchment LU 2-15: LU 2-15 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=4.310 ac Runoff Volume=0.593 af Runoff Depth=1.65" Tc=4.0 min CN=72 14.27 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 235HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-16: LU 2-16 Runoff = 9.30 cfs @ 12.07 hrs, Volume= 0.383 af, Depth= 1.80" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 2.560 74 2.560 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Subcatchment LU 2-16: LU 2-16 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=2.560 ac Runoff Volume=0.383 af Runoff Depth=1.80" Tc=4.0 min CN=74 9.30 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 236HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-18: LU 2-18 Runoff = 28.55 cfs @ 12.10 hrs, Volume= 1.381 af, Depth= 2.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 8.180 77 8.180 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-18: LU 2-18 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=8.180 ac Runoff Volume=1.381 af Runoff Depth=2.03" Tc=7.0 min CN=77 28.55 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 237HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-2: LU 2-2 Runoff = 36.49 cfs @ 12.10 hrs, Volume= 1.784 af, Depth= 1.80" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 11.910 74 11.910 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-2: LU 2-2 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=11.910 ac Runoff Volume=1.784 af Runoff Depth=1.80" Tc=7.0 min CN=74 36.49 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 238HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-3: LU 2-3 Runoff = 93.04 cfs @ 12.24 hrs, Volume= 6.829 af, Depth= 1.72" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 47.530 73 47.530 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 17.0 Direct Entry, Subcatchment LU 2-3: LU 2-3 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=47.530 ac Runoff Volume=6.829 af Runoff Depth=1.72" Tc=17.0 min CN=73 93.04 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 239HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-4: LU 2-4 Runoff = 44.17 cfs @ 12.11 hrs, Volume= 2.239 af, Depth= 2.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 12.300 79 12.300 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment LU 2-4: LU 2-4 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)48 46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=12.300 ac Runoff Volume=2.239 af Runoff Depth=2.18" Tc=8.0 min CN=79 44.17 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 240HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-5: LU 2-5 Runoff = 33.25 cfs @ 12.10 hrs, Volume= 1.605 af, Depth= 2.10" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 9.150 78 9.150 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-5: LU 2-5 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=9.150 ac Runoff Volume=1.605 af Runoff Depth=2.10" Tc=7.0 min CN=78 33.25 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 241HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-7: LU 2-7 Runoff = 31.08 cfs @ 12.10 hrs, Volume= 1.503 af, Depth= 2.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 8.904 77 8.904 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-7: LU 2-7 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=8.904 ac Runoff Volume=1.503 af Runoff Depth=2.03" Tc=7.0 min CN=77 31.08 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 242HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-8: LU 2-8 Runoff = 19.09 cfs @ 12.08 hrs, Volume= 0.838 af, Depth= 1.72" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 5.830 73 5.830 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment LU 2-8: LU 2-8 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=5.830 ac Runoff Volume=0.838 af Runoff Depth=1.72" Tc=5.0 min CN=73 19.09 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 243HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-9: LU 2-9 Runoff = 29.72 cfs @ 12.10 hrs, Volume= 1.478 af, Depth= 1.58" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 11.210 71 11.210 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-9: LU 2-9 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=11.210 ac Runoff Volume=1.478 af Runoff Depth=1.58" Tc=7.0 min CN=71 29.72 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 244HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W11S: W11 Runoff = 12.50 cfs @ 12.19 hrs, Volume= 0.833 af, Depth= 1.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 2.746 74 Wetland, HSG C * 0.481 70 Woods Good, HSG C * 1.503 71 Meadow, HSG C * 0.452 74 75% Grass cover Good, HSG C * 0.284 98 Impervious, HSG C 5.464 Weighted Average 5.181 94.81% Pervious Area 0.284 5.19% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.8 650 0.0380 0.79 Lag/CN Method, Subcatchment W11S: W11 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=5.464 ac Runoff Volume=0.833 af Runoff Depth=1.83" Flow Length=650' Slope=0.0380 '/' Tc=13.8 min CN=WQ 12.50 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 245HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W12S: W12 Runoff = 2.91 cfs @ 12.05 hrs, Volume= 0.112 af, Depth= 1.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.081 74 Wetland, HSG C * 0.290 70 Woods Good, HSG C * 0.316 74 75% Grass cover Good, HSG C * 0.047 98 Impervious, HSG C 0.734 Weighted Average 0.687 93.58% Pervious Area 0.047 6.42% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.1 130 0.1200 1.01 Lag/CN Method, Subcatchment W12S: W12 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.734 ac Runoff Volume=0.112 af Runoff Depth=1.83" Flow Length=130' Slope=0.1200 '/' Tc=2.1 min CN=WQ 2.91 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 246HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W13S: W13 Runoff = 4.89 cfs @ 12.13 hrs, Volume= 0.274 af, Depth= 1.90" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.038 74 Wetland, HSG C * 0.252 70 Woods Good, HSG C * 1.325 74 75% Grass cover Good, HSG C * 0.114 98 Impervious, HSG C 1.729 Weighted Average 1.615 93.39% Pervious Area 0.114 6.61% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 715 0.0900 1.27 Lag/CN Method, Subcatchment W13S: W13 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=1.729 ac Runoff Volume=0.274 af Runoff Depth=1.90" Flow Length=715' Slope=0.0900 '/' Tc=9.4 min CN=WQ 4.89 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 247HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W14S: W14 Runoff = 7.40 cfs @ 12.12 hrs, Volume= 0.415 af, Depth= 2.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.084 74 Wetland, HSG C * 0.638 70 Woods Good, HSG C * 0.014 71 Meadow, HSG C * 1.375 74 75% Grass cover Good, HSG C * 0.341 98 Impervious, HSG C 2.452 Weighted Average 2.112 86.11% Pervious Area 0.341 13.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.1 715 0.0900 1.30 Lag/CN Method, Subcatchment W14S: W14 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=2.452 ac Runoff Volume=0.415 af Runoff Depth=2.03" Flow Length=715' Slope=0.0900 '/' Tc=9.1 min CN=WQ 7.40 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 248HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W6S: W6 Runoff = 2.08 cfs @ 12.07 hrs, Volume= 0.087 af, Depth= 1.81" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.061 74 Wetland, HSG C * 0.392 71 Meadow, HSG C * 0.080 74 75% Grass cover Good, HSG C * 0.041 98 Impervious, HSG C 0.575 Weighted Average 0.534 92.88% Pervious Area 0.041 7.12% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.7 200 0.0800 0.90 Lag/CN Method, Subcatchment W6S: W6 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.575 ac Runoff Volume=0.087 af Runoff Depth=1.81" Flow Length=200' Slope=0.0800 '/' Tc=3.7 min CN=WQ 2.08 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 249HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Reach Pipe from W2 to W1: Pipe from Wetland 2 to Wetland 1 [52] Hint: Inlet/Outlet conditions not evaluated Inflow = 15.64 cfs @ 12.68 hrs, Volume= 11.451 af Outflow = 15.64 cfs @ 12.70 hrs, Volume= 11.451 af, Atten= 0%, Lag= 0.7 min Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Max. Velocity= 3.74 fps, Min. Travel Time= 0.9 min Avg. Velocity = 0.90 fps, Avg. Travel Time= 3.9 min Peak Storage= 886 cf @ 12.70 hrs Average Depth at Peak Storage= 1.72' Bank-Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 25.09 cfs 36.0" Round Pipe n= 0.013 Concrete pipe, bends & connections Length= 212.0' Slope= 0.0014 '/' Inlet Invert= 964.30', Outlet Invert= 964.00' Reach Pipe from W2 to W1: Pipe from Wetland 2 to Wetland 1 Inflow Outflow Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Avg. Flow Depth=1.72' Max Vel=3.74 fps 36.0" Round Pipe n=0.013 L=212.0' S=0.0014 '/' Capacity=25.09 cfs 15.64 cfs 15.64 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 250HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 300P: Pond with IESF Inflow Area = 73.792 ac, 31.33% Impervious, Inflow Depth = 1.78" for 10y 24hr event Inflow = 121.79 cfs @ 12.26 hrs, Volume= 10.961 af Outflow = 11.93 cfs @ 13.67 hrs, Volume= 10.961 af, Atten= 90%, Lag= 84.8 min Primary = 9.93 cfs @ 13.67 hrs, Volume= 10.697 af Secondary = 1.99 cfs @ 13.67 hrs, Volume= 0.264 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 965.00' Surf.Area= 59,664 sf Storage= 254,284 cf Peak Elev= 968.55' @ 13.67 hrs Surf.Area= 99,965 sf Storage= 574,278 cf (319,994 cf above start) Plug-Flow detention time= 2,322.0 min calculated for 5.123 af (47% of inflow) Center-of-Mass det. time= 1,137.7 min ( 1,934.4 - 796.7 ) Volume Invert Avail.Storage Storage Description #1 955.00' 779,932 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 955.00 7,650 0 0 956.00 11,005 9,328 9,328 958.00 16,690 27,695 37,023 960.00 23,225 39,915 76,938 962.00 31,363 54,588 131,526 963.00 36,141 33,752 165,278 964.00 41,104 38,623 203,900 965.00 59,664 50,384 254,284 965.01 63,414 615 254,899 965.02 80,995 722 255,621 965.95 85,712 77,519 333,140 970.50 110,680 446,792 779,932 Device Routing Invert Outlet Devices #1 Primary 960.22'42.0" Round RCP_Round 42" L= 43.0' Ke= 0.500 Inlet / Outlet Invert= 960.22' / 960.00' S= 0.0051 '/' Cc= 0.900 n= 0.013, Flow Area= 9.62 sf #2 Device 1 965.95'Custom Weir, Cv= 2.62 (C= 3.28) Head (feet) 0.00 2.35 2.35 5.00 Width (feet) 0.50 0.50 7.00 7.00 #3 Device 2 960.00'42.0" Round RCP_Round 42" L= 10.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 960.00' / 960.00' S= 0.0000 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 9.62 sf #4 Device 1 963.00'6.0" Vert. 2 - 6" Draintile Outlet X 2.00 C= 0.600 #5 Device 4 965.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 965.00' - 965.01' Excluded Surface area = 59,664 sf #6 Secondary 960.22'36.0" Round RCP_Round 36" L= 43.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 960.22' / 960.00' S= 0.0051 '/' Cc= 0.900 Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 251HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf #7 Device 6 968.30'5.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Primary OutFlow Max=9.93 cfs @ 13.67 hrs HW=968.55' TW=958.08' (Dynamic Tailwater) 1=RCP_Round 42" (Passes 9.93 cfs of 118.81 cfs potential flow) 2=Custom Weir (Weir Controls 9.47 cfs @ 3.26 fps) 3=RCP_Round 42" (Passes 9.47 cfs of 101.81 cfs potential flow) 4=2 - 6" Draintile Outlet (Passes 0.46 cfs of 4.35 cfs potential flow) 5=Iron Enhanced Filtration (Exfiltration Controls 0.46 cfs) Secondary OutFlow Max=1.99 cfs @ 13.67 hrs HW=968.55' TW=958.08' (Dynamic Tailwater) 6=RCP_Round 36" (Passes 1.99 cfs of 88.93 cfs potential flow) 7=Sharp-Crested Rectangular Weir (Weir Controls 1.99 cfs @ 1.63 fps) Pond 300P: Pond with IESF Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)130 120 110 100 90 80 70 60 50 40 30 20 10 0 Inflow Area=73.792 ac Peak Elev=968.55' Storage=574,278 cf 121.79 cfs 11.93 cfs 9.93 cfs 1.99 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 252HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 400P: County pond with IESF Inflow Area = 4.800 ac, 45.05% Impervious, Inflow Depth = 2.75" for 10y 24hr event Inflow = 13.54 cfs @ 12.15 hrs, Volume= 1.100 af Outflow = 5.29 cfs @ 12.56 hrs, Volume= 1.100 af, Atten= 61%, Lag= 24.6 min Primary = 5.29 cfs @ 12.56 hrs, Volume= 1.100 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 984.00' Surf.Area= 10,824 sf Storage= 37,248 cf Peak Elev= 985.24' @ 12.56 hrs Surf.Area= 17,918 sf Storage= 57,653 cf (20,405 cf above start) Plug-Flow detention time= 1,724.2 min calculated for 0.245 af (22% of inflow) Center-of-Mass det. time= 373.7 min ( 1,150.9 - 777.1 ) Volume Invert Avail.Storage Storage Description #1 974.00' 185,067 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 974.00 485 0 0 975.00 868 677 677 976.00 1,334 1,101 1,778 978.00 2,522 3,856 5,634 980.00 4,030 6,552 12,186 982.00 5,839 9,869 22,055 983.00 6,862 6,351 28,405 984.00 10,824 8,843 37,248 984.01 11,174 110 37,358 984.02 15,262 132 37,490 984.45 16,243 6,774 44,264 985.00 17,254 9,212 53,475 986.00 20,050 18,652 72,127 987.00 22,870 21,460 93,587 991.00 22,870 91,480 185,067 Device Routing Invert Outlet Devices #1 Primary 982.00'15.0" Round RCP_Round 15" L= 29.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 982.00' / 982.00' S= 0.0000 '/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #2 Device 1 984.45'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 3.0' Crest Height #3 Device 2 982.00'15.0" Round RCP_Round 15" L= 22.0' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 981.75' / 982.00' S= -0.0114 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #4 Device 1 982.00'6.0" Vert. Draintile Outlet C= 0.600 #5 Device 4 984.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 984.00' - 984.01' Excluded Surface area = 10,824 sf Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 253HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Primary OutFlow Max=5.29 cfs @ 12.56 hrs HW=985.24' TW=979.23' (Dynamic Tailwater) 1=RCP_Round 15" (Passes 5.29 cfs of 10.14 cfs potential flow) 2=Sharp-Crested Rectangular Weir (Passes 5.24 cfs of 9.06 cfs potential flow) 3=RCP_Round 15" (Inlet Controls 5.24 cfs @ 4.27 fps) 4=Draintile Outlet (Passes 0.04 cfs of 1.63 cfs potential flow) 5=Iron Enhanced Filtration (Exfiltration Controls 0.04 cfs) Pond 400P: County pond with IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=4.800 ac Peak Elev=985.24' Storage=57,653 cf 13.54 cfs 5.29 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 254HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 490: CB inlet [57] Hint: Peaked at 985.25' (Flood elevation advised) Inflow Area = 5.397 ac, 16.24% Impervious, Inflow Depth = 1.76" for 10y 24hr event Inflow = 8.65 cfs @ 12.22 hrs, Volume= 0.790 af Outflow = 8.65 cfs @ 12.22 hrs, Volume= 0.790 af, Atten= 0%, Lag= 0.1 min Primary = 7.47 cfs @ 12.22 hrs, Volume= 0.774 af Secondary = 1.18 cfs @ 12.22 hrs, Volume= 0.016 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 985.25' @ 12.22 hrs Device Routing Invert Outlet Devices #1 Primary 984.63'19.0" Horiz. Orifice/Grate C= 0.600 in 22.0" Grate (75% open area) Limited to weir flow at low heads #2 Secondary 985.10'8.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=7.47 cfs @ 12.22 hrs HW=985.25' TW=966.67' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 7.47 cfs @ 3.79 fps) Secondary OutFlow Max=1.18 cfs @ 12.22 hrs HW=985.25' TW=981.21' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir (Weir Controls 1.18 cfs @ 0.98 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 255HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 490: CB inlet Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)9 8 7 6 5 4 3 2 1 0 Inflow Area=5.397 ac Peak Elev=985.25' 8.65 cfs 8.65 cfs 7.47 cfs 1.18 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 256HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 491P: CB inlet [57] Hint: Peaked at 981.21' (Flood elevation advised) Inflow = 1.18 cfs @ 12.22 hrs, Volume= 0.016 af Outflow = 1.18 cfs @ 12.23 hrs, Volume= 0.016 af, Atten= 0%, Lag= 0.1 min Primary = 1.18 cfs @ 12.23 hrs, Volume= 0.016 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 981.21' @ 12.23 hrs Device Routing Invert Outlet Devices #1 Primary 981.04'19.0" Horiz. Orifice/Grate C= 0.600 in 22.0" Grate (75% open area) Limited to weir flow at low heads Primary OutFlow Max=1.18 cfs @ 12.23 hrs HW=981.21' TW=966.68' (Dynamic Tailwater) 1=Orifice/Grate (Weir Controls 1.18 cfs @ 1.36 fps) Pond 491P: CB inlet Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Peak Elev=981.21' 1.18 cfs 1.18 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 257HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 500P: IESF Inflow Area = 1.766 ac, 29.44% Impervious, Inflow Depth = 2.44" for 10y 24hr event Inflow = 6.34 cfs @ 12.13 hrs, Volume= 0.360 af Outflow = 6.30 cfs @ 12.13 hrs, Volume= 0.360 af, Atten= 1%, Lag= 0.4 min Primary = 6.30 cfs @ 12.13 hrs, Volume= 0.360 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 985.43' @ 12.13 hrs Surf.Area= 2,887 sf Storage= 3,144 cf Plug-Flow detention time= 306.7 min calculated for 0.360 af (100% of inflow) Center-of-Mass det. time= 306.8 min ( 1,088.2 - 781.5 ) Volume Invert Avail.Storage Storage Description #1 984.00' 6,740 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 984.00 0 0 0 984.01 200 1 1 984.02 1,600 9 10 985.00 2,468 1,993 2,003 985.50 2,960 1,357 3,360 986.00 3,520 1,620 4,980 986.50 3,520 1,760 6,740 Device Routing Invert Outlet Devices #1 Primary 982.00'6.0" Vert. Draintile Outlet C= 0.600 #2 Device 1 984.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 984.00' - 984.01' Excluded Surface area = 0 sf #3 Primary 985.30'60.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=6.30 cfs @ 12.13 hrs HW=985.43' TW=978.52' (Dynamic Tailwater) 1=Draintile Outlet (Passes 0.02 cfs of 1.68 cfs potential flow) 2=Iron Enhanced Filtration (Exfiltration Controls 0.02 cfs) 3=Broad-Crested Rectangular Weir (Weir Controls 6.28 cfs @ 0.83 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 258HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 500P: IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=1.766 ac Peak Elev=985.43' Storage=3,144 cf 6.34 cfs 6.30 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 259HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 600P: rain garden [86] Warning: Oscillations may require smaller dt (severity=1192) Inflow Area = 2.197 ac, 13.03% Impervious, Inflow Depth = 0.48" for 10y 24hr event Inflow = 1.49 cfs @ 12.14 hrs, Volume= 0.088 af Outflow = 0.79 cfs @ 12.31 hrs, Volume= 0.089 af, Atten= 47%, Lag= 10.3 min Discarded = 0.01 cfs @ 12.19 hrs, Volume= 0.041 af Primary = 0.78 cfs @ 12.31 hrs, Volume= 0.048 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 999.60' @ 12.31 hrs Surf.Area= 2,045 sf Storage= 1,431 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 633.7 min ( 1,430.3 - 796.6 ) Volume Invert Avail.Storage Storage Description #1 998.70' 6,330 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 998.70 1,000 0 0 999.50 2,045 1,218 1,218 1,000.00 2,045 1,023 2,240 1,002.00 2,045 4,090 6,330 Device Routing Invert Outlet Devices #1 Primary 999.50'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 998.70'0.200 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.19 hrs HW=999.50' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.78 cfs @ 12.31 hrs HW=999.60' TW=957.28' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.78 cfs @ 0.75 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 260HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 600P: rain garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=2.197 ac Peak Elev=999.60' Storage=1,431 cf 1.49 cfs 0.79 cfs 0.01 cfs 0.78 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 261HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 800P: rain garden Inflow Area = 1.094 ac, 15.23% Impervious, Inflow Depth = 2.04" for 10y 24hr event Inflow = 3.53 cfs @ 12.11 hrs, Volume= 0.186 af Outflow = 3.30 cfs @ 12.14 hrs, Volume= 0.186 af, Atten= 6%, Lag= 1.8 min Discarded = 0.01 cfs @ 12.14 hrs, Volume= 0.035 af Primary = 3.30 cfs @ 12.14 hrs, Volume= 0.151 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,001.77' @ 12.14 hrs Surf.Area= 1,920 sf Storage= 1,537 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 279.6 min ( 1,073.2 - 793.6 ) Volume Invert Avail.Storage Storage Description #1 1,000.70' 2,017 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,000.70 850 0 0 1,001.00 1,350 330 330 1,001.50 1,600 738 1,067 1,002.00 2,200 950 2,017 Device Routing Invert Outlet Devices #1 Primary 1,001.50'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 1,000.70'0.200 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.14 hrs HW=1,001.77' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=3.30 cfs @ 12.14 hrs HW=1,001.77' TW=999.78' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 3.30 cfs @ 1.24 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 262HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 800P: rain garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=1.094 ac Peak Elev=1,001.77' Storage=1,537 cf 3.53 cfs 3.30 cfs 0.01 cfs 3.30 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 263HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 900P: IESF Inflow Area = 1.215 ac, 34.66% Impervious, Inflow Depth = 2.57" for 10y 24hr event Inflow = 4.48 cfs @ 12.13 hrs, Volume= 0.261 af Outflow = 4.05 cfs @ 12.17 hrs, Volume= 0.261 af, Atten= 10%, Lag= 2.6 min Primary = 4.05 cfs @ 12.17 hrs, Volume= 0.261 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 992.30' @ 12.17 hrs Surf.Area= 2,919 sf Storage= 2,937 cf Plug-Flow detention time= 417.0 min calculated for 0.261 af (100% of inflow) Center-of-Mass det. time= 417.0 min ( 1,195.0 - 778.0 ) Volume Invert Avail.Storage Storage Description #1 991.00' 3,533 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.00 0 0 0 991.01 100 0 0 991.02 1,650 9 9 991.50 2,131 907 917 992.00 2,605 1,184 2,101 992.50 3,124 1,432 3,533 Device Routing Invert Outlet Devices #1 Primary 989.00'6.0" Vert. Draintile Outlet C= 0.600 #2 Device 1 991.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 991.00' - 991.01' Excluded Surface area = 0 sf #3 Primary 992.00'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=4.05 cfs @ 12.17 hrs HW=992.30' TW=987.52' (Dynamic Tailwater) 1=Draintile Outlet (Passes 0.01 cfs of 1.65 cfs potential flow) 2=Iron Enhanced Filtration (Exfiltration Controls 0.01 cfs) 3=Broad-Crested Rectangular Weir (Weir Controls 4.04 cfs @ 1.33 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 264HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 900P: IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 Inflow Area=1.215 ac Peak Elev=992.30' Storage=2,937 cf 4.48 cfs 4.05 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 265HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB11: Bluffs at Lake Lucy CB 11 Inflow Area = 0.920 ac, 18.48% Impervious, Inflow Depth = 2.20" for 10y 24hr event Inflow = 2.38 cfs @ 12.21 hrs, Volume= 0.169 af Outflow = 2.38 cfs @ 12.22 hrs, Volume= 0.169 af, Atten= 0%, Lag= 0.3 min Primary = 2.38 cfs @ 12.22 hrs, Volume= 0.169 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 997.65' @ 12.22 hrs Surf.Area= 537 sf Storage= 43 cf Plug-Flow detention time= 1.9 min calculated for 0.169 af (100% of inflow) Center-of-Mass det. time= 1.9 min ( 798.1 - 796.2 ) Volume Invert Avail.Storage Storage Description #1 997.50' 56,626,370 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 997.50 40 0 0 998.00 1,700 435 435 1,000.50 3,500 6,500 6,935 10,002.00 9,080 56,619,435 56,626,370 Device Routing Invert Outlet Devices #1 Primary 997.50'48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 998.00'20.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=2.38 cfs @ 12.22 hrs HW=997.65' TW=965.00' (Dynamic Tailwater) 1=Grate (Weir Controls 2.38 cfs @ 1.26 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=997.50' TW=964.00' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 266HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB11: Bluffs at Lake Lucy CB 11 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Inflow Area=0.920 ac Peak Elev=997.65' Storage=43 cf 2.38 cfs 2.38 cfs 2.38 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 267HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB13A: Bluffs at Lake Lucy CB 13A Inflow Area = 0.130 ac, 38.46% Impervious, Inflow Depth = 2.66" for 10y 24hr event Inflow = 0.40 cfs @ 12.20 hrs, Volume= 0.029 af Outflow = 0.40 cfs @ 12.20 hrs, Volume= 0.029 af, Atten= 0%, Lag= 0.1 min Primary = 0.40 cfs @ 12.20 hrs, Volume= 0.029 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,014.07' @ 12.20 hrs Surf.Area= 35 sf Storage= 2 cf Plug-Flow detention time= 0.1 min calculated for 0.029 af (100% of inflow) Center-of-Mass det. time= 0.1 min ( 780.8 - 780.7 ) Volume Invert Avail.Storage Storage Description #1 1,014.00' 625 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,014.00 15 0 0 1,016.00 610 625 625 Device Routing Invert Outlet Devices #1 Primary 1,014.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 1,015.50'20.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.40 cfs @ 12.20 hrs HW=1,014.07' TW=964.94' (Dynamic Tailwater) 1=Grate (Weir Controls 0.40 cfs @ 0.84 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,014.00' TW=964.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 268HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB13A: Bluffs at Lake Lucy CB 13A Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=0.130 ac Peak Elev=1,014.07' Storage=2 cf 0.40 cfs 0.40 cfs 0.40 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 269HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB22: Bluffs at Lake Lucy CB 22 Inflow Area = 0.160 ac, 25.00% Impervious, Inflow Depth = 2.36" for 10y 24hr event Inflow = 0.44 cfs @ 12.20 hrs, Volume= 0.031 af Outflow = 0.44 cfs @ 12.20 hrs, Volume= 0.031 af, Atten= 0%, Lag= 0.1 min Primary = 0.44 cfs @ 12.20 hrs, Volume= 0.031 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 978.57' @ 12.20 hrs Surf.Area= 55 sf Storage= 3 cf Plug-Flow detention time= 0.2 min calculated for 0.031 af (100% of inflow) Center-of-Mass det. time= 0.2 min ( 790.7 - 790.4 ) Volume Invert Avail.Storage Storage Description #1 978.50' 145 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 978.50 40 0 0 979.50 250 145 145 Device Routing Invert Outlet Devices #1 Primary 978.50'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 979.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.44 cfs @ 12.20 hrs HW=978.57' TW=974.31' (Dynamic Tailwater) 1=Grate (Weir Controls 0.44 cfs @ 0.87 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=978.50' TW=957.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 270HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB22: Bluffs at Lake Lucy CB 22 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=0.160 ac Peak Elev=978.57' Storage=3 cf 0.44 cfs 0.44 cfs 0.44 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 271HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB23: Bluffs at Lake Lucy CB 23 Inflow Area = 0.160 ac, 18.75% Impervious, Inflow Depth = 2.22" for 10y 24hr event Inflow = 0.42 cfs @ 12.21 hrs, Volume= 0.030 af Outflow = 0.42 cfs @ 12.20 hrs, Volume= 0.030 af, Atten= 0%, Lag= 0.0 min Primary = 0.42 cfs @ 12.20 hrs, Volume= 0.030 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 978.57' @ 12.20 hrs Surf.Area= 46 sf Storage= 3 cf Plug-Flow detention time= 0.2 min calculated for 0.030 af (100% of inflow) Center-of-Mass det. time= 0.2 min ( 796.1 - 795.9 ) Volume Invert Avail.Storage Storage Description #1 978.50' 363 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 978.50 40 0 0 981.00 250 363 363 Device Routing Invert Outlet Devices #1 Primary 978.50'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 980.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.42 cfs @ 12.20 hrs HW=978.57' TW=974.31' (Dynamic Tailwater) 1=Grate (Weir Controls 0.42 cfs @ 0.86 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=978.50' TW=978.50' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 272HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB23: Bluffs at Lake Lucy CB 23 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.46 0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=0.160 ac Peak Elev=978.57' Storage=3 cf 0.42 cfs 0.42 cfs 0.42 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 273HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB24: Bluffs at Lake Lucy CB 24 Inflow Area = 0.150 ac, 20.00% Impervious, Inflow Depth = 2.23" for 10y 24hr event Inflow = 0.39 cfs @ 12.20 hrs, Volume= 0.028 af Outflow = 0.39 cfs @ 12.20 hrs, Volume= 0.028 af, Atten= 0%, Lag= 0.0 min Primary = 0.39 cfs @ 12.20 hrs, Volume= 0.028 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 979.07' @ 12.20 hrs Surf.Area= 43 sf Storage= 3 cf Plug-Flow detention time= 0.2 min calculated for 0.028 af (100% of inflow) Center-of-Mass det. time= 0.2 min ( 795.1 - 794.9 ) Volume Invert Avail.Storage Storage Description #1 979.00' 180 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 979.00 40 0 0 981.00 140 180 180 Device Routing Invert Outlet Devices #1 Primary 979.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 980.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.39 cfs @ 12.20 hrs HW=979.07' TW=974.31' (Dynamic Tailwater) 1=Grate (Weir Controls 0.39 cfs @ 0.84 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=979.00' TW=978.50' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 274HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB24: Bluffs at Lake Lucy CB 24 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=0.150 ac Peak Elev=979.07' Storage=3 cf 0.39 cfs 0.39 cfs 0.39 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 275HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB25: Bluffs at Lake Lucy CB 25 Inflow Area = 0.080 ac, 37.50% Impervious, Inflow Depth = 2.64" for 10y 24hr event Inflow = 0.24 cfs @ 12.20 hrs, Volume= 0.018 af Outflow = 0.24 cfs @ 12.20 hrs, Volume= 0.018 af, Atten= 0%, Lag= 0.1 min Primary = 0.24 cfs @ 12.20 hrs, Volume= 0.018 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 981.05' @ 12.20 hrs Surf.Area= 45 sf Storage= 2 cf Plug-Flow detention time= 0.3 min calculated for 0.018 af (100% of inflow) Center-of-Mass det. time= 0.3 min ( 781.6 - 781.3 ) Volume Invert Avail.Storage Storage Description #1 981.00' 90 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 981.00 40 0 0 982.00 140 90 90 Device Routing Invert Outlet Devices #1 Primary 981.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 981.80'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.24 cfs @ 12.20 hrs HW=981.05' TW=974.30' (Dynamic Tailwater) 1=Grate (Weir Controls 0.24 cfs @ 0.72 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=981.00' TW=979.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 276HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB25: Bluffs at Lake Lucy CB 25 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=0.080 ac Peak Elev=981.05' Storage=2 cf 0.24 cfs 0.24 cfs 0.24 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 277HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB26: Bluffs at Lake Lucy CB 26 Inflow Area = 0.260 ac, 23.08% Impervious, Inflow Depth = 2.31" for 10y 24hr event Inflow = 0.70 cfs @ 12.20 hrs, Volume= 0.050 af Outflow = 0.70 cfs @ 12.21 hrs, Volume= 0.050 af, Atten= 0%, Lag= 0.3 min Primary = 0.70 cfs @ 12.21 hrs, Volume= 0.050 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 983.10' @ 12.21 hrs Surf.Area= 114 sf Storage= 7 cf Plug-Flow detention time= 0.3 min calculated for 0.050 af (100% of inflow) Center-of-Mass det. time= 0.3 min ( 792.3 - 792.0 ) Volume Invert Avail.Storage Storage Description #1 983.00' 594 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 983.00 40 0 0 984.20 950 594 594 Device Routing Invert Outlet Devices #1 Primary 983.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 984.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.70 cfs @ 12.21 hrs HW=983.10' TW=974.32' (Dynamic Tailwater) 1=Grate (Weir Controls 0.70 cfs @ 1.02 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=983.00' TW=981.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 278HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB26: Bluffs at Lake Lucy CB 26 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=0.260 ac Peak Elev=983.10' Storage=7 cf 0.70 cfs 0.70 cfs 0.70 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 279HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB27: Bluffs at Lake Lucy CB 27 Inflow Area = 0.360 ac, 16.67% Impervious, Inflow Depth = 2.17" for 10y 24hr event Inflow = 0.92 cfs @ 12.22 hrs, Volume= 0.065 af Outflow = 0.92 cfs @ 12.22 hrs, Volume= 0.065 af, Atten= 0%, Lag= 0.1 min Primary = 0.92 cfs @ 12.22 hrs, Volume= 0.065 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 986.12' @ 12.22 hrs Surf.Area= 52 sf Storage= 5 cf Plug-Flow detention time= 0.2 min calculated for 0.065 af (100% of inflow) Center-of-Mass det. time= 0.2 min ( 798.0 - 797.8 ) Volume Invert Avail.Storage Storage Description #1 986.00' 90 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 986.00 40 0 0 987.00 140 90 90 Device Routing Invert Outlet Devices #1 Primary 986.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 987.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.92 cfs @ 12.22 hrs HW=986.12' TW=974.37' (Dynamic Tailwater) 1=Grate (Weir Controls 0.92 cfs @ 1.12 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=986.00' TW=983.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 280HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB27: Bluffs at Lake Lucy CB 27 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=0.360 ac Peak Elev=986.12' Storage=5 cf 0.92 cfs 0.92 cfs 0.92 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 281HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB28: Bluffs at Lake Lucy CB 28 Inflow Area = 0.280 ac, 17.86% Impervious, Inflow Depth = 2.20" for 10y 24hr event Inflow = 0.72 cfs @ 12.21 hrs, Volume= 0.051 af Outflow = 0.72 cfs @ 12.22 hrs, Volume= 0.051 af, Atten= 0%, Lag= 0.2 min Primary = 0.72 cfs @ 12.22 hrs, Volume= 0.051 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 995.10' @ 12.22 hrs Surf.Area= 115 sf Storage= 8 cf Plug-Flow detention time= 0.3 min calculated for 0.051 af (100% of inflow) Center-of-Mass det. time= 0.3 min ( 796.9 - 796.7 ) Volume Invert Avail.Storage Storage Description #1 995.00' 594 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 995.00 40 0 0 996.20 950 594 594 Device Routing Invert Outlet Devices #1 Primary 995.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 996.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.72 cfs @ 12.22 hrs HW=995.10' TW=974.37' (Dynamic Tailwater) 1=Grate (Weir Controls 0.72 cfs @ 1.03 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=995.00' TW=986.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 282HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB28: Bluffs at Lake Lucy CB 28 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=0.280 ac Peak Elev=995.10' Storage=8 cf 0.72 cfs 0.72 cfs 0.72 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 283HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB30: Bluffs at Lake Lucy CB 30 Inflow Area = 0.250 ac, 16.00% Impervious, Inflow Depth = 2.14" for 10y 24hr event Inflow = 0.63 cfs @ 12.22 hrs, Volume= 0.045 af Outflow = 0.63 cfs @ 12.22 hrs, Volume= 0.045 af, Atten= 0%, Lag= 0.1 min Primary = 0.63 cfs @ 12.22 hrs, Volume= 0.045 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,000.09' @ 12.22 hrs Surf.Area= 93 sf Storage= 6 cf Plug-Flow detention time= 0.3 min calculated for 0.045 af (100% of inflow) Center-of-Mass det. time= 0.3 min ( 798.8 - 798.6 ) Volume Invert Avail.Storage Storage Description #1 1,000.00' 1,240 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,000.00 40 0 0 1,002.00 1,200 1,240 1,240 Device Routing Invert Outlet Devices #1 Primary 1,000.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 1,001.00'20.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.63 cfs @ 12.22 hrs HW=1,000.09' TW=974.37' (Dynamic Tailwater) 1=Grate (Weir Controls 0.63 cfs @ 0.98 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,000.00' TW=997.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 284HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB30: Bluffs at Lake Lucy CB 30 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=0.250 ac Peak Elev=1,000.09' Storage=6 cf 0.63 cfs 0.63 cfs 0.63 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 285HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB37: Bluffs at Lake Lucy CB 37 Inflow Area = 1.260 ac, 6.35% Impervious, Inflow Depth = 2.04" for 10y 24hr event Inflow = 3.10 cfs @ 12.22 hrs, Volume= 0.214 af Outflow = 3.09 cfs @ 12.22 hrs, Volume= 0.214 af, Atten= 0%, Lag= 0.2 min Primary = 3.09 cfs @ 12.22 hrs, Volume= 0.214 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,004.26' @ 12.22 hrs Surf.Area= 349 sf Storage= 51 cf Plug-Flow detention time= 0.3 min calculated for 0.214 af (100% of inflow) Center-of-Mass det. time= 0.3 min ( 806.7 - 806.4 ) Volume Invert Avail.Storage Storage Description #1 1,004.00' 2,440 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,004.00 40 0 0 1,006.00 2,400 2,440 2,440 Device Routing Invert Outlet Devices #1 Primary 1,004.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 1,005.50'20.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=3.09 cfs @ 12.22 hrs HW=1,004.26' TW=974.37' (Dynamic Tailwater) 1=Grate (Weir Controls 3.09 cfs @ 1.67 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,004.00' TW=973.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 286HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB37: Bluffs at Lake Lucy CB 37 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=1.260 ac Peak Elev=1,004.26' Storage=51 cf 3.10 cfs 3.09 cfs 3.09 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 287HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB9: Bluffs at Lake Lucy CB 9 Inflow Area = 1.400 ac, 17.86% Impervious, Inflow Depth = 2.13" for 10y 24hr event Inflow = 3.48 cfs @ 12.22 hrs, Volume= 0.248 af Outflow = 3.48 cfs @ 12.22 hrs, Volume= 0.248 af, Atten= 0%, Lag= 0.1 min Primary = 3.48 cfs @ 12.22 hrs, Volume= 0.248 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,010.28' @ 12.22 hrs Surf.Area= 121 sf Storage= 23 cf Plug-Flow detention time= 0.1 min calculated for 0.248 af (100% of inflow) Center-of-Mass det. time= 0.1 min ( 797.5 - 797.3 ) Volume Invert Avail.Storage Storage Description #1 1,010.00' 650 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,010.00 40 0 0 1,012.00 610 650 650 Device Routing Invert Outlet Devices #1 Primary 1,010.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 1,012.00'20.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=3.48 cfs @ 12.22 hrs HW=1,010.28' TW=964.99' (Dynamic Tailwater) 1=Grate (Weir Controls 3.48 cfs @ 1.74 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,010.00' TW=964.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 288HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB9: Bluffs at Lake Lucy CB 9 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=1.400 ac Peak Elev=1,010.28' Storage=23 cf 3.48 cfs 3.48 cfs 3.48 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 289HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_Pond1: Bluffs at Lake Lucy Pond 1 Inflow Area = 10.000 ac, 36.90% Impervious, Inflow Depth = 2.61" for 10y 24hr event Inflow = 30.00 cfs @ 12.20 hrs, Volume= 2.176 af Outflow = 8.38 cfs @ 12.64 hrs, Volume= 2.176 af, Atten= 72%, Lag= 26.3 min Primary = 8.38 cfs @ 12.64 hrs, Volume= 2.176 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 973.00' Surf.Area= 21,004 sf Storage= 90,682 cf Peak Elev= 975.01' @ 12.64 hrs Surf.Area= 25,003 sf Storage= 136,930 cf (46,248 cf above start) Plug-Flow detention time= 2,111.3 min calculated for 0.094 af (4% of inflow) Center-of-Mass det. time= 227.6 min ( 1,009.3 - 781.7 ) Volume Invert Avail.Storage Storage Description #1 963.00' 333,459 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 963.00 2,140 0 0 964.00 3,250 2,695 2,695 966.00 5,742 8,992 11,687 968.00 8,547 14,289 25,976 970.00 11,621 20,168 46,144 972.00 14,943 26,564 72,708 973.00 21,004 17,974 90,682 974.00 22,948 21,976 112,658 976.00 27,007 49,955 162,613 978.00 31,892 58,899 221,512 980.00 39,370 71,262 292,774 981.00 42,000 40,685 333,459 Device Routing Invert Outlet Devices #1 Primary 970.50'27.0" Round OCS to Outlet L= 14.5' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 970.50' / 969.50' S= 0.0690 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 3.98 sf #2 Device 1 973.00'OCS Internal Weir, Cv= 2.62 (C= 3.28) Head (feet) 0.00 1.00 1.50 1.51 3.00 4.00 Width (feet) 0.50 0.50 0.50 4.00 4.00 4.00 #3 Device 2 970.50'15.0" Round Low Flow Pipe L= 30.4' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 970.00' / 970.50' S= -0.0164 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #4 Device 1 977.00'48.0" Horiz. OCS Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 979.10'8.0' long x 4.0' breadth EOF Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 290HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Primary OutFlow Max=8.38 cfs @ 12.64 hrs HW=975.01' TW=966.01' (Dynamic Tailwater) 1=OCS to Outlet (Passes 8.38 cfs of 44.04 cfs potential flow) 2=OCS Internal Weir (Passes 8.38 cfs of 8.82 cfs potential flow) 3=Low Flow Pipe (Inlet Controls 8.38 cfs @ 6.83 fps) 4=OCS Grate ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=973.00' TW=969.90' (Dynamic Tailwater) 5=EOF ( Controls 0.00 cfs) Pond BLL_Pond1: Bluffs at Lake Lucy Pond 1 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=10.000 ac Peak Elev=975.01' Storage=136,930 cf 30.00 cfs 8.38 cfs 8.38 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 291HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_Pond2: Bluffs at Lake Lucy Pond 2 [86] Warning: Oscillations may require smaller dt (severity=573) Inflow Area = 9.320 ac, 34.98% Impervious, Inflow Depth = 2.57" for 10y 24hr event Inflow = 27.52 cfs @ 12.20 hrs, Volume= 1.993 af Outflow = 1.15 cfs @ 15.15 hrs, Volume= 1.993 af, Atten= 96%, Lag= 177.0 min Discarded = 0.24 cfs @ 1.67 hrs, Volume= 1.418 af Primary = 0.91 cfs @ 15.15 hrs, Volume= 0.575 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 964.00' Surf.Area= 25,003 sf Storage= 19,002 cf Peak Elev= 966.18' @ 15.15 hrs Surf.Area= 31,165 sf Storage= 80,065 cf (61,063 cf above start) Plug-Flow detention time= 1,749.5 min calculated for 1.557 af (78% of inflow) Center-of-Mass det. time= 1,318.2 min ( 2,101.4 - 783.2 ) Volume Invert Avail.Storage Storage Description #1 958.00' 221,527 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 958.00 128 0 0 960.00 713 841 841 962.00 1,731 2,444 3,285 963.00 2,350 2,041 5,326 964.00 25,003 13,677 19,002 966.00 30,650 55,653 74,655 967.00 33,590 32,120 106,775 968.00 35,597 34,594 141,369 969.20 41,600 46,318 187,687 970.00 43,000 33,840 221,527 Device Routing Invert Outlet Devices #1 Primary 960.50'18.0" Round MH 16 to FES 15 L= 74.6' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 960.50' / 959.80' S= 0.0094 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.77 sf #2 Device 1 965.50'OCS Internal Weir, Cv= 2.62 (C= 3.28) Head (feet) 0.00 0.50 1.00 1.01 1.50 Width (feet) 0.50 0.50 0.50 4.00 4.00 #3 Device 2 961.50'15.0" Round Low Flow Pipe L= 32.2' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 961.50' / 961.50' S= 0.0000 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #4 Device 1 967.00'48.0" Horiz. OCS C= 0.600 Limited to weir flow at low heads #5 Discarded 964.00'0.24 cfs Infiltration when above 964.00' #6 Secondary 968.20'8.0' long x 4.0' breadth EOF Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 292HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Discarded OutFlow Max=0.24 cfs @ 1.67 hrs HW=964.00' (Free Discharge) 5=Infiltration (Exfiltration Controls 0.24 cfs) Primary OutFlow Max=0.91 cfs @ 15.15 hrs HW=966.18' TW=957.98' (Dynamic Tailwater) 1=MH 16 to FES 15 (Passes 0.91 cfs of 19.55 cfs potential flow) 2=OCS Internal Weir (Weir Controls 0.91 cfs @ 2.69 fps) 3=Low Flow Pipe (Passes 0.91 cfs of 4.85 cfs potential flow) 4=OCS ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=964.00' TW=957.00' (Dynamic Tailwater) 6=EOF ( Controls 0.00 cfs) Pond BLL_Pond2: Bluffs at Lake Lucy Pond 2 Inflow Outflow Discarded Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=9.320 ac Peak Elev=966.18' Storage=80,065 cf 27.52 cfs 1.15 cfs 0.24 cfs 0.91 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 293HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond CB-9: EX CB-9 [57] Hint: Peaked at 989.00' (Flood elevation advised) Inflow Area = 11.464 ac, 0.00% Impervious, Inflow Depth = 1.97" for 10y 24hr event Inflow = 6.86 cfs @ 12.57 hrs, Volume= 1.885 af Outflow = 6.86 cfs @ 12.58 hrs, Volume= 1.885 af, Atten= 0%, Lag= 0.1 min Primary = 6.86 cfs @ 12.58 hrs, Volume= 1.885 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 989.00' @ 12.58 hrs Device Routing Invert Outlet Devices #1 Primary 987.85'24.0" Round CMP_Round 24" L= 94.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 987.85' / 980.75' S= 0.0755 '/' Cc= 0.900 n= 0.025 Corrugated metal, Flow Area= 3.14 sf Primary OutFlow Max=6.86 cfs @ 12.58 hrs HW=989.00' TW=979.24' (Dynamic Tailwater) 1=CMP_Round 24" (Inlet Controls 6.86 cfs @ 3.66 fps) Pond CB-9: EX CB-9 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=11.464 ac Peak Elev=989.00' 24.0" Round Culvert n=0.025 L=94.0' S=0.0755 '/' 6.86 cfs 6.86 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 294HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond GB_CB27: Bluffs at Lake Lucy CB 29 Inflow Area = 0.100 ac, 30.00% Impervious, Inflow Depth = 2.47" for 10y 24hr event Inflow = 0.29 cfs @ 12.20 hrs, Volume= 0.021 af Outflow = 0.29 cfs @ 12.20 hrs, Volume= 0.021 af, Atten= 0%, Lag= 0.1 min Primary = 0.29 cfs @ 12.20 hrs, Volume= 0.021 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 997.05' @ 12.20 hrs Surf.Area= 44 sf Storage= 2 cf Plug-Flow detention time= 0.3 min calculated for 0.021 af (100% of inflow) Center-of-Mass det. time= 0.3 min ( 786.8 - 786.6 ) Volume Invert Avail.Storage Storage Description #1 997.00' 80 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 997.00 40 0 0 998.00 120 80 80 Device Routing Invert Outlet Devices #1 Primary 997.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 997.50'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.29 cfs @ 12.20 hrs HW=997.05' TW=974.30' (Dynamic Tailwater) 1=Grate (Weir Controls 0.29 cfs @ 0.76 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=997.00' TW=995.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 295HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond GB_CB27: Bluffs at Lake Lucy CB 29 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=0.100 ac Peak Elev=997.05' Storage=2 cf 0.29 cfs 0.29 cfs 0.29 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 296HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond LUCY: LAKE LUCY [40] Hint: Not Described (Outflow=Inflow) Inflow = 67.09 cfs @ 13.62 hrs, Volume= 75.981 af Primary = 67.09 cfs @ 13.62 hrs, Volume= 75.981 af, Atten= 0%, Lag= 0.1 min Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Pond LUCY: LAKE LUCY Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 67.09 cfs 67.09 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 297HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-1: P-LU 2-1 [86] Warning: Oscillations may require smaller dt (severity=57427) Inflow = 137.45 cfs @ 12.65 hrs, Volume= 40.776 af Outflow = 64.11 cfs @ 13.71 hrs, Volume= 75.012 af, Atten= 53%, Lag= 63.5 min Primary = 64.11 cfs @ 13.71 hrs, Volume= 75.012 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 958.08' @ 13.71 hrs Surf.Area= 596,104 sf Storage= 365,026 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 3,387.9 min ( 4,754.6 - 1,366.7 ) Volume Invert Avail.Storage Storage Description #1 957.00'263,128,940,839 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 957.00 8,105 0 0 958.00 557,600 282,853 282,853 960.00 1,540,893 2,098,493 2,381,346 962.00 2,214,005 3,754,898 6,136,244 96,400.00 3,300,000 263,122,804,595 263,128,940,839 Device Routing Invert Outlet Devices #1 Primary 957.00'20.0' long Broad-Crested Rectangular Weir X 0.00 Head (feet) 0.50 1.00 1.50 Coef. (English) 3.00 3.00 3.00 #2 Primary 956.50'Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 0.00 0.50 1.00 1.50 2.00 2.50 Width (feet) 2.00 6.00 16.00 25.00 37.00 45.00 Primary OutFlow Max=64.11 cfs @ 13.71 hrs HW=958.08' TW=0.00' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) 2=Custom Weir/Orifice (Weir Controls 64.11 cfs @ 3.24 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 298HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-1: P-LU 2-1 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 Peak Elev=958.08' Storage=365,026 cf 137.45 cfs 64.11 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 299HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-10: P-LU 2-10 Inflow Area = 9.880 ac, 0.00% Impervious, Inflow Depth = 1.72" for 10y 24hr event Inflow = 30.54 cfs @ 12.09 hrs, Volume= 1.419 af Outflow = 10.98 cfs @ 12.31 hrs, Volume= 1.254 af, Atten= 64%, Lag= 13.2 min Primary = 10.98 cfs @ 12.31 hrs, Volume= 1.254 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 974.52' @ 12.31 hrs Surf.Area= 0.161 ac Storage= 0.446 af Plug-Flow detention time= 84.6 min calculated for 1.254 af (88% of inflow) Center-of-Mass det. time= 38.4 min ( 849.0 - 810.6 ) Volume Invert Avail.Storage Storage Description #1 968.00' 1.289 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.009 0.000 0.000 972.00 0.070 0.158 0.158 974.00 0.140 0.210 0.368 976.00 0.220 0.360 0.728 978.00 0.341 0.561 1.289 Device Routing Invert Outlet Devices #1 Primary 972.10'18.0" Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=10.98 cfs @ 12.31 hrs HW=974.52' TW=971.59' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 10.98 cfs @ 6.22 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 300HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-10: P-LU 2-10 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=9.880 ac Peak Elev=974.52' Storage=0.446 af 30.54 cfs 10.98 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 301HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-11: P-LU 2-11 Inflow = 112.91 cfs @ 12.17 hrs, Volume= 8.769 af Outflow = 0.40 cfs @ 24.40 hrs, Volume= 1.873 af, Atten= 100%, Lag= 733.4 min Primary = 0.40 cfs @ 24.40 hrs, Volume= 1.873 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 972.48' @ 24.40 hrs Surf.Area= 4.952 ac Storage= 8.491 af Plug-Flow detention time= 3,856.5 min calculated for 1.873 af (21% of inflow) Center-of-Mass det. time= 3,729.9 min ( 4,578.7 - 848.7 ) Volume Invert Avail.Storage Storage Description #1 968.00' 93.400 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.360 0.000 0.000 970.00 1.000 1.360 1.360 972.00 4.000 5.000 6.360 976.00 12.000 32.000 38.360 980.00 15.520 55.040 93.400 Device Routing Invert Outlet Devices #1 Primary 972.01'15.0" Round Culvert L= 114.0' Ke= 0.500 Inlet / Outlet Invert= 972.01' / 971.97' S= 0.0004 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 1.23 sf Primary OutFlow Max=0.40 cfs @ 24.40 hrs HW=972.48' TW=970.47' (Dynamic Tailwater) 1=Culvert (Barrel Controls 0.40 cfs @ 1.43 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 302HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-11: P-LU 2-11 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)125 120 115 110 105 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Peak Elev=972.48' Storage=8.491 af 15.0" Round Culvert n=0.011 L=114.0' S=0.0004 '/' 112.91 cfs 0.40 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 303HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-12: P-LU 2-12 Inflow Area = 9.720 ac, 0.00% Impervious, Inflow Depth = 1.65" for 10y 24hr event Inflow = 28.63 cfs @ 12.09 hrs, Volume= 1.338 af Outflow = 0.53 cfs @ 18.03 hrs, Volume= 0.318 af, Atten= 98%, Lag= 356.5 min Primary = 0.53 cfs @ 18.03 hrs, Volume= 0.318 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 978.32' @ 18.03 hrs Surf.Area= 0.287 ac Storage= 1.107 af Plug-Flow detention time= 533.2 min calculated for 0.318 af (24% of inflow) Center-of-Mass det. time= 438.1 min ( 1,250.6 - 812.5 ) Volume Invert Avail.Storage Storage Description #1 972.00' 2.680 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 972.00 0.080 0.000 0.000 978.00 0.260 1.020 1.020 980.00 0.430 0.690 1.710 982.00 0.540 0.970 2.680 Device Routing Invert Outlet Devices #1 Primary 978.00'18.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 980.00'100.0' long x 26.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.53 cfs @ 18.03 hrs HW=978.32' TW=972.35' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 0.53 cfs @ 1.92 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=972.00' TW=968.00' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 304HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-12: P-LU 2-12 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=9.720 ac Peak Elev=978.32' Storage=1.107 af 28.63 cfs 0.53 cfs 0.53 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 305HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-13: P-LU 2-13 Inflow Area = 15.390 ac, 0.00% Impervious, Inflow Depth = 1.65" for 10y 24hr event Inflow = 42.90 cfs @ 12.10 hrs, Volume= 2.119 af Outflow = 9.60 cfs @ 12.55 hrs, Volume= 1.607 af, Atten= 78%, Lag= 26.8 min Primary = 9.60 cfs @ 12.55 hrs, Volume= 1.607 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 991.01' @ 12.55 hrs Surf.Area= 0.321 ac Storage= 0.901 af Plug-Flow detention time= 162.9 min calculated for 1.607 af (76% of inflow) Center-of-Mass det. time= 94.3 min ( 907.7 - 813.4 ) Volume Invert Avail.Storage Storage Description #1 986.00' 2.750 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 986.00 0.054 0.000 0.000 989.60 0.230 0.511 0.511 993.00 0.450 1.156 1.667 994.00 0.540 0.495 2.162 995.00 0.635 0.587 2.750 Device Routing Invert Outlet Devices #1 Primary 989.60'24.0" Round Culvert L= 110.0' Ke= 0.500 Inlet / Outlet Invert= 989.60' / 983.00' S= 0.0600 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 3.14 sf Primary OutFlow Max=9.60 cfs @ 12.55 hrs HW=991.01' TW=971.25' (Dynamic Tailwater) 1=Culvert (Inlet Controls 9.60 cfs @ 4.05 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 306HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-13: P-LU 2-13 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)48 46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=15.390 ac Peak Elev=991.01' Storage=0.901 af 24.0" Round Culvert n=0.011 L=110.0' S=0.0600 '/' 42.90 cfs 9.60 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 307HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-2: P-LU 2-2 [86] Warning: Oscillations may require smaller dt (severity=22064) Inflow = 55.80 cfs @ 12.09 hrs, Volume= 6.647 af Outflow = 10.86 cfs @ 12.09 hrs, Volume= 6.646 af, Atten= 81%, Lag= 0.0 min Primary = 10.86 cfs @ 12.09 hrs, Volume= 6.646 af Secondary = 0.01 cfs @ 13.94 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 969.90' Surf.Area= 0.094 ac Storage= 0.085 af Peak Elev= 972.06' @ 13.94 hrs Surf.Area= 3.216 ac Storage= 2.418 af (2.333 af above start) Plug-Flow detention time= 343.7 min calculated for 6.561 af (99% of inflow) Center-of-Mass det. time= 155.2 min ( 3,373.7 - 3,218.6 ) Volume Invert Avail.Storage Storage Description #1 968.00' 11.223 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.010 0.000 0.000 969.00 0.040 0.025 0.025 970.00 0.100 0.070 0.095 971.00 0.533 0.316 0.411 972.00 3.130 1.831 2.243 973.00 4.690 3.910 6.153 974.00 5.450 5.070 11.223 Device Routing Invert Outlet Devices #1 Primary 968.58'30.0" Round RCP_Round 30" L= 85.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 968.58' / 968.08' S= 0.0059 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 4.91 sf #2 Secondary 972.01'15.0" Round Culvert L= 114.0' Ke= 0.500 Inlet / Outlet Invert= 971.97' / 972.01' S= -0.0004 '/' Cc= 0.900 n= 0.011, Flow Area= 1.23 sf Primary OutFlow Max=10.52 cfs @ 12.09 hrs HW=971.06' TW=970.83' (Dynamic Tailwater) 1=RCP_Round 30" (Outlet Controls 10.52 cfs @ 2.69 fps) Secondary OutFlow Max=0.01 cfs @ 13.94 hrs HW=972.06' TW=971.93' (Dynamic Tailwater) 2=Culvert (Barrel Controls 0.01 cfs @ 0.22 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 308HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-2: P-LU 2-2 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)60 55 50 45 40 35 30 25 20 15 10 5 0 Peak Elev=972.06' Storage=2.418 af 55.80 cfs 10.86 cfs 10.86 cfs 0.01 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 309HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Inflow Area = 53.360 ac, 0.00% Impervious, Inflow Depth = 1.64" for 10y 24hr event Inflow = 93.04 cfs @ 12.24 hrs, Volume= 7.306 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 992.71' @ 250.00 hrs Surf.Area= 8.438 ac Storage= 7.306 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 991.90' 52.450 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 991.90 5.100 0.000 0.000 992.00 5.900 0.550 0.550 994.00 13.000 18.900 19.450 996.00 20.000 33.000 52.450 Device Routing Invert Outlet Devices #1 Primary 995.00'30.0' long Broad-Crested Rectangular Weir Head (feet) 0.50 1.00 Coef. (English) 2.80 2.80 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=991.90' TW=957.00' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 310HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=53.360 ac Peak Elev=992.71' Storage=7.306 af 93.04 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 311HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-4: P-LU 2-4 Inflow Area = 13.950 ac, 2.37% Impervious, Inflow Depth = 2.19" for 10y 24hr event Inflow = 47.41 cfs @ 12.12 hrs, Volume= 2.547 af Outflow = 44.23 cfs @ 12.15 hrs, Volume= 2.227 af, Atten= 7%, Lag= 1.9 min Primary = 9.68 cfs @ 12.15 hrs, Volume= 1.484 af Secondary = 34.55 cfs @ 12.15 hrs, Volume= 0.743 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 975.57' @ 12.15 hrs Surf.Area= 0.187 ac Storage= 0.576 af Plug-Flow detention time= 89.2 min calculated for 2.227 af (87% of inflow) Center-of-Mass det. time= 42.3 min ( 843.0 - 800.7 ) Volume Invert Avail.Storage Storage Description #1 970.00' 1.120 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 970.00 0.020 0.000 0.000 974.00 0.140 0.320 0.320 978.00 0.260 0.800 1.120 Device Routing Invert Outlet Devices #1 Primary 974.00'21.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 975.00'30.0' long x 15.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=9.68 cfs @ 12.15 hrs HW=975.57' TW=971.21' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 9.68 cfs @ 4.26 fps) Secondary OutFlow Max=34.55 cfs @ 12.15 hrs HW=975.57' TW=971.21' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir (Weir Controls 34.55 cfs @ 2.03 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 312HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-4: P-LU 2-4 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)50 45 40 35 30 25 20 15 10 5 0 Inflow Area=13.950 ac Peak Elev=975.57' Storage=0.576 af 47.41 cfs 44.23 cfs 9.68 cfs 34.55 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 313HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-5: P-LU 2-5 Inflow Area = 9.150 ac, 0.00% Impervious, Inflow Depth = 2.10" for 10y 24hr event Inflow = 33.25 cfs @ 12.10 hrs, Volume= 1.605 af Outflow = 5.21 cfs @ 12.60 hrs, Volume= 1.624 af, Atten= 84%, Lag= 30.2 min Primary = 5.21 cfs @ 12.60 hrs, Volume= 1.624 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 965.00' Surf.Area= 0.200 ac Storage= 0.447 af Peak Elev= 966.15' @ 12.60 hrs Surf.Area= 0.534 ac Storage= 1.178 af (0.731 af above start) Plug-Flow detention time= 262.9 min calculated for 1.177 af (73% of inflow) Center-of-Mass det. time= 121.6 min ( 924.1 - 802.4 ) Volume Invert Avail.Storage Storage Description #1 956.00' 2.352 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 956.00 0.004 0.000 0.000 962.00 0.030 0.102 0.102 965.00 0.200 0.345 0.447 968.00 1.070 1.905 2.352 Device Routing Invert Outlet Devices #1 Primary 962.98'18.0" Round Culvert L= 30.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 962.98' / 962.83' S= 0.0050 '/' Cc= 0.900 n= 0.013, Flow Area= 1.77 sf #2 Device 1 964.83'15.0" Round Culvert L= 15.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 963.38' / 964.83' S= -0.0967 '/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #3 Device 1 966.00'18.0" W x 12.0" H Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=5.21 cfs @ 12.60 hrs HW=966.15' TW=957.65' (Dynamic Tailwater) 1=Culvert (Passes 5.21 cfs of 13.24 cfs potential flow) 2=Culvert (Inlet Controls 4.93 cfs @ 4.02 fps) 3=Orifice/Grate (Orifice Controls 0.28 cfs @ 1.25 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 314HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-5: P-LU 2-5 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=9.150 ac Peak Elev=966.15' Storage=1.178 af 33.25 cfs 5.21 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 315HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-6: Wetland 11 Inflow Area = 23.494 ac, 12.62% Impervious, Inflow Depth = 2.13" for 10y 24hr event Inflow = 27.54 cfs @ 12.19 hrs, Volume= 4.177 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 980.74' @ 250.00 hrs Surf.Area= 112,080 sf Storage= 181,937 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 978.00' 1,458,300 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 978.00 16,553 0 0 980.00 90,625 107,178 107,178 982.00 148,800 239,425 346,603 984.00 171,115 319,915 666,518 986.00 197,334 368,449 1,034,967 988.00 225,999 423,333 1,458,300 Device Routing Invert Outlet Devices #1 Primary 982.57'15.0" Round RCP_Round 15" L= 50.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 982.57' / 982.05' S= 0.0104 '/' Cc= 0.900 n= 0.013 Concrete sewer w/manholes & inlets, Flow Area= 1.23 sf Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=978.00' TW=965.00' (Dynamic Tailwater) 1=RCP_Round 15" ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 316HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-6: Wetland 11 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=23.494 ac Peak Elev=980.74' Storage=181,937 cf 15.0" Round Culvert n=0.013 L=50.0' S=0.0104 '/' 27.54 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 317HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-7: P-LU 2-7 Inflow Area = 8.904 ac, 0.00% Impervious, Inflow Depth = 2.03" for 10y 24hr event Inflow = 31.08 cfs @ 12.10 hrs, Volume= 1.503 af Outflow = 5.57 cfs @ 12.58 hrs, Volume= 1.502 af, Atten= 82%, Lag= 28.9 min Primary = 5.57 cfs @ 12.58 hrs, Volume= 1.502 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 995.27' Surf.Area= 7,683 sf Storage= 18,263 cf Peak Elev= 997.94' @ 12.58 hrs Surf.Area= 12,793 sf Storage= 45,543 cf (27,280 cf above start) Plug-Flow detention time= 214.2 min calculated for 1.083 af (72% of inflow) Center-of-Mass det. time= 88.5 min ( 892.8 - 804.2 ) Volume Invert Avail.Storage Storage Description #1 991.00' 117,493 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.00 871 0 0 995.27 7,683 18,263 18,263 996.00 8,932 6,064 24,327 998.00 12,906 21,838 46,165 1,000.00 18,379 31,285 77,450 1,002.00 21,664 40,043 117,493 Device Routing Invert Outlet Devices #1 Primary 995.27'12.0" Round RCP_Round 12" L= 60.8' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 995.27' / 994.07' S= 0.0197 '/' Cc= 0.900 n= 0.013, Flow Area= 0.79 sf Primary OutFlow Max=5.57 cfs @ 12.58 hrs HW=997.94' TW=989.00' (Dynamic Tailwater) 1=RCP_Round 12" (Inlet Controls 5.57 cfs @ 7.10 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 318HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-7: P-LU 2-7 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=8.904 ac Peak Elev=997.94' Storage=45,543 cf 12.0" Round Culvert n=0.013 L=60.8' S=0.0197 '/' 31.08 cfs 5.57 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 319HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-8: P-LU 2-8 Inflow Area = 5.830 ac, 0.00% Impervious, Inflow Depth = 1.72" for 10y 24hr event Inflow = 19.09 cfs @ 12.08 hrs, Volume= 0.838 af Outflow = 1.83 cfs @ 13.06 hrs, Volume= 0.477 af, Atten= 90%, Lag= 58.8 min Primary = 1.83 cfs @ 13.06 hrs, Volume= 0.477 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 996.74' @ 13.06 hrs Surf.Area= 0.170 ac Storage= 0.475 af Plug-Flow detention time= 240.8 min calculated for 0.477 af (57% of inflow) Center-of-Mass det. time= 158.2 min ( 967.9 - 809.7 ) Volume Invert Avail.Storage Storage Description #1 992.00' 0.720 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 992.00 0.040 0.000 0.000 996.00 0.140 0.360 0.360 998.00 0.220 0.360 0.720 Device Routing Invert Outlet Devices #1 Primary 996.00'12.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 997.00'50.0' long x 20.0' breadth Broad-Crested Rectangular Weir X 2.00 Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=1.83 cfs @ 13.06 hrs HW=996.74' TW=992.41' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 1.83 cfs @ 2.93 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=992.00' TW=991.90' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 320HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-8: P-LU 2-8 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=5.830 ac Peak Elev=996.74' Storage=0.475 af 19.09 cfs 1.83 cfs 1.83 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 321HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-9: P-LU 2-9 Inflow Area = 11.210 ac, 0.00% Impervious, Inflow Depth = 1.58" for 10y 24hr event Inflow = 29.72 cfs @ 12.10 hrs, Volume= 1.478 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 976.65' @ 24.39 hrs Surf.Area= 1.328 ac Storage= 1.478 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 975.00' 3.430 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 975.00 0.230 0.000 0.000 977.00 1.560 1.790 1.790 978.00 1.720 1.640 3.430 Device Routing Invert Outlet Devices #1 Primary 977.00'8.0" Vert. Orifice/Grate C= 0.580 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=975.00' TW=969.90' (Dynamic Tailwater) 1=Orifice/Grate ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 322HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-9: P-LU 2-9 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=11.210 ac Peak Elev=976.65' Storage=1.478 af 29.72 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 323HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU-2-16: P-LU-2-16 Inflow Area = 2.560 ac, 0.00% Impervious, Inflow Depth = 1.80" for 10y 24hr event Inflow = 9.30 cfs @ 12.07 hrs, Volume= 0.383 af Outflow = 1.29 cfs @ 12.56 hrs, Volume= 0.382 af, Atten= 86%, Lag= 29.7 min Primary = 1.29 cfs @ 12.56 hrs, Volume= 0.382 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 994.07' Surf.Area= 9,913 sf Storage= 902 cf Peak Elev= 994.67' @ 12.56 hrs Surf.Area= 11,822 sf Storage= 8,595 cf (7,693 cf above start) Plug-Flow detention time= 290.8 min calculated for 0.362 af (94% of inflow) Center-of-Mass det. time= 244.1 min ( 1,051.0 - 806.9 ) Volume Invert Avail.Storage Storage Description #1 994.00' 107,634 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 994.00 9,689 0 0 996.00 16,084 25,773 25,773 998.00 20,360 36,444 62,217 1,000.00 25,057 45,417 107,634 Device Routing Invert Outlet Devices #1 Primary 994.07'12.0" Round RCP_Round 12" L= 93.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 994.07' / 987.85' S= 0.0669 '/' Cc= 0.900 n= 0.013, Flow Area= 0.79 sf Primary OutFlow Max=1.29 cfs @ 12.56 hrs HW=994.67' TW=989.00' (Dynamic Tailwater) 1=RCP_Round 12" (Inlet Controls 1.29 cfs @ 2.63 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 324HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU-2-16: P-LU-2-16 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)10 9 8 7 6 5 4 3 2 1 0 Inflow Area=2.560 ac Peak Elev=994.67' Storage=8,595 cf 12.0" Round Culvert n=0.013 L=93.0' S=0.0669 '/' 9.30 cfs 1.29 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 325HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU10-1: P-LU 10-1 Inflow Area = 7.720 ac, 1.30% Impervious, Inflow Depth = 2.12" for 10y 24hr event Inflow = 29.03 cfs @ 12.09 hrs, Volume= 1.365 af Outflow = 3.89 cfs @ 12.61 hrs, Volume= 0.970 af, Atten= 87%, Lag= 31.7 min Primary = 3.89 cfs @ 12.61 hrs, Volume= 0.970 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 964.66' @ 12.61 hrs Surf.Area= 0.233 ac Storage= 0.707 af Plug-Flow detention time= 192.5 min calculated for 0.970 af (71% of inflow) Center-of-Mass det. time= 123.0 min ( 923.7 - 800.7 ) Volume Invert Avail.Storage Storage Description #1 958.00' 1.715 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 958.00 0.020 0.000 0.000 962.00 0.100 0.240 0.240 963.10 0.180 0.154 0.394 964.00 0.200 0.171 0.565 966.00 0.300 0.500 1.065 968.00 0.350 0.650 1.715 Device Routing Invert Outlet Devices #1 Primary 963.10'12.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 966.00'100.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=3.89 cfs @ 12.61 hrs HW=964.66' TW=0.00' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 3.89 cfs @ 4.95 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=958.00' TW=0.00' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 326HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU10-1: P-LU 10-1 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=7.720 ac Peak Elev=964.66' Storage=0.707 af 29.03 cfs 3.89 cfs 3.89 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 327HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W12: Wetland 12 Inflow Area = 0.734 ac, 6.42% Impervious, Inflow Depth = 1.83" for 10y 24hr event Inflow = 2.91 cfs @ 12.05 hrs, Volume= 0.112 af Outflow = 0.04 cfs @ 15.06 hrs, Volume= 0.033 af, Atten= 99%, Lag= 180.8 min Primary = 0.04 cfs @ 15.06 hrs, Volume= 0.033 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 994.12' @ 15.06 hrs Surf.Area= 0.111 ac Storage= 0.092 af Plug-Flow detention time= 724.2 min calculated for 0.033 af (29% of inflow) Center-of-Mass det. time= 626.2 min ( 1,425.0 - 798.8 ) Volume Invert Avail.Storage Storage Description #1 992.50' 0.430 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 992.50 0.002 0.000 0.000 993.00 0.035 0.009 0.009 993.50 0.070 0.026 0.035 994.00 0.104 0.043 0.079 994.50 0.134 0.059 0.138 995.00 0.171 0.076 0.215 995.50 0.210 0.095 0.310 996.00 0.269 0.120 0.430 Device Routing Invert Outlet Devices #1 Primary 994.00'15.0" Round RCP_Round 15" L= 45.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 994.00' / 993.82' S= 0.0040 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf Primary OutFlow Max=0.04 cfs @ 15.06 hrs HW=994.12' TW=968.43' (Dynamic Tailwater) 1=RCP_Round 15" (Barrel Controls 0.04 cfs @ 1.10 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 328HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W12: Wetland 12 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=0.734 ac Peak Elev=994.12' Storage=0.092 af 15.0" Round Culvert n=0.013 L=45.0' S=0.0040 '/' 2.91 cfs 0.04 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 329HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W13: Wetland 13 Inflow Area = 1.729 ac, 6.61% Impervious, Inflow Depth = 1.90" for 10y 24hr event Inflow = 4.89 cfs @ 12.13 hrs, Volume= 0.274 af Outflow = 0.78 cfs @ 12.68 hrs, Volume= 0.147 af, Atten= 84%, Lag= 33.0 min Primary = 0.78 cfs @ 12.68 hrs, Volume= 0.147 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 993.10' @ 12.68 hrs Surf.Area= 11,419 sf Storage= 6,590 cf Plug-Flow detention time= 194.7 min calculated for 0.147 af (54% of inflow) Center-of-Mass det. time= 111.0 min ( 915.0 - 804.1 ) Volume Invert Avail.Storage Storage Description #1 991.50' 22,402 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.50 17 0 0 992.00 648 166 166 993.00 10,069 5,359 5,525 994.00 23,685 16,877 22,402 Device Routing Invert Outlet Devices #1 Primary 993.00'10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=0.78 cfs @ 12.68 hrs HW=993.10' TW=987.31' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.78 cfs @ 0.78 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 330HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W13: Wetland 13 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 Inflow Area=1.729 ac Peak Elev=993.10' Storage=6,590 cf 4.89 cfs 0.78 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 331HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W14: Wetland 14 Inflow Area = 5.397 ac, 16.24% Impervious, Inflow Depth = 1.83" for 10y 24hr event Inflow = 11.13 cfs @ 12.14 hrs, Volume= 0.823 af Outflow = 8.65 cfs @ 12.22 hrs, Volume= 0.790 af, Atten= 22%, Lag= 4.7 min Primary = 8.65 cfs @ 12.22 hrs, Volume= 0.790 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 987.55' @ 12.22 hrs Surf.Area= 8,173 sf Storage= 4,781 cf Plug-Flow detention time= 129.0 min calculated for 0.790 af (96% of inflow) Center-of-Mass det. time= 26.9 min ( 970.5 - 943.6 ) Volume Invert Avail.Storage Storage Description #1 986.00' 27,529 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 986.00 261 0 0 986.50 1,045 327 327 987.00 3,560 1,151 1,478 987.50 8,040 2,900 4,378 988.00 9,380 4,355 8,733 988.50 11,195 5,144 13,877 989.00 13,765 6,240 20,117 989.50 15,884 7,412 27,529 Device Routing Invert Outlet Devices #1 Primary 987.00'8.0' long x 4.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Primary OutFlow Max=8.65 cfs @ 12.22 hrs HW=987.55' TW=985.25' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 8.65 cfs @ 1.97 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 332HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W14: Wetland 14 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=5.397 ac Peak Elev=987.55' Storage=4,781 cf 11.13 cfs 8.65 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 333HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W2: Wetland 2 [86] Warning: Oscillations may require smaller dt (severity=22070) Inflow = 80.57 cfs @ 12.13 hrs, Volume= 10.418 af Outflow = 13.50 cfs @ 12.30 hrs, Volume= 10.418 af, Atten= 83%, Lag= 10.2 min Primary = 7.41 cfs @ 13.73 hrs, Volume= 9.276 af Secondary = 6.49 cfs @ 12.29 hrs, Volume= 1.142 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 969.90' Surf.Area= 2,833 sf Storage= 1,514 cf Peak Elev= 972.04' @ 13.73 hrs Surf.Area= 71,995 sf Storage= 77,997 cf (76,483 cf above start) Plug-Flow detention time= 133.9 min calculated for 10.383 af (100% of inflow) Center-of-Mass det. time= 84.2 min ( 2,535.9 - 2,451.8 ) Volume Invert Avail.Storage Storage Description #1 967.00' 1,052,847 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 967.00 10 0 0 968.85 12 20 20 970.00 3,102 1,791 1,811 972.00 70,418 73,520 75,331 974.00 154,658 225,076 300,407 976.00 189,337 343,995 644,402 978.00 219,108 408,445 1,052,847 Device Routing Invert Outlet Devices #1 Primary 967.50'18.0" Round MH 44 to MH 41 L= 40.4' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 967.50' / 967.00' S= 0.0124 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.77 sf #2 Device 1 973.60'48.0" Horiz. OCS C= 0.600 Limited to weir flow at low heads #3 Device 1 967.70'12.0" Round FES 42 to MH 44 L= 13.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 967.70' / 967.50' S= 0.0154 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 0.79 sf #4 Device 3 969.90'20.0' long x 5.0' breadth Ditch Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #5 Secondary 968.58'30.0" Round Culvert to LU 2-2 L= 85.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 968.58' / 968.08' S= 0.0059 '/' Cc= 0.900 n= 0.012, Flow Area= 4.91 sf Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 334HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Primary OutFlow Max=7.41 cfs @ 13.73 hrs HW=972.04' TW=965.72' (Dynamic Tailwater) 1=MH 44 to MH 41 (Passes 7.41 cfs of 16.56 cfs potential flow) 2=OCS ( Controls 0.00 cfs) 3=FES 42 to MH 44 (Inlet Controls 7.41 cfs @ 9.43 fps) 4=Ditch Berm (Passes 7.41 cfs of 165.97 cfs potential flow) Secondary OutFlow Max=6.35 cfs @ 12.29 hrs HW=971.63' TW=971.56' (Dynamic Tailwater) 5=Culvert to LU 2-2 (Inlet Controls 6.35 cfs @ 1.29 fps) Pond W2: Wetland 2 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Peak Elev=972.04' Storage=77,997 cf 80.57 cfs 13.50 cfs 7.41 cfs 6.49 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 335HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W6: Wetland 6 Inflow Area = 1.668 ac, 12.44% Impervious, Inflow Depth = 1.71" for 10y 24hr event Inflow = 4.46 cfs @ 12.12 hrs, Volume= 0.238 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,000.92' @ 24.40 hrs Surf.Area= 9,689 sf Storage= 10,355 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 999.00' 16,680 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 999.00 2,453 0 0 999.50 3,157 1,403 1,403 1,000.00 5,185 2,086 3,488 1,000.50 7,715 3,225 6,713 1,001.00 10,073 4,447 11,160 1,001.50 12,007 5,520 16,680 Device Routing Invert Outlet Devices #1 Primary 1,001.00'50.0' long x 25.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=999.00' TW=998.70' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_Proposed Conditio Printed 9/23/2020Prepared by AE2S Page 336HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W6: Wetland 6 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 Inflow Area=1.668 ac Peak Elev=1,000.92' Storage=10,355 cf 4.46 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 337HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Time span=0.00-250.00 hrs, dt=0.002 hrs, 125001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Sim-Route method - Pond routing by Sim-Route method Runoff Area=38.561 ac 45.60% Impervious Runoff Depth=5.65"Subcatchment 300S: 300 Flow Length=1,575' Slope=0.0350 '/' Tc=20.7 min CN=WQ Runoff=201.02 cfs 18.157 af Runoff Area=5.606 ac 29.33% Impervious Runoff Depth=5.11"Subcatchment 301S: 301 Flow Length=275' Slope=0.1030 '/' Tc=3.5 min CN=WQ Runoff=52.11 cfs 2.387 af Runoff Area=2.200 ac 77.27% Impervious Runoff Depth=6.54"Subcatchment 400S: Proposed CR 117 Tc=20.0 min CN=WQ Runoff=13.07 cfs 1.199 af Runoff Area=2.600 ac 17.79% Impervious Runoff Depth=4.74"Subcatchment 401S: 401 Flow Length=500' Slope=0.0500 '/' Tc=8.9 min CN=WQ Runoff=17.46 cfs 1.027 af Runoff Area=1.766 ac 29.44% Impervious Runoff Depth=5.20"Subcatchment 500S: 500 Flow Length=510' Slope=0.0400 '/' Tc=9.0 min CN=WQ Runoff=12.73 cfs 0.765 af Runoff Area=0.529 ac 14.88% Impervious Runoff Depth=4.62"Subcatchment 600S: 600 Flow Length=495' Slope=0.0400 '/' Tc=10.2 min CN=WQ Runoff=3.29 cfs 0.204 af Runoff Area=8.313 ac 0.56% Impervious Runoff Depth=4.09"Subcatchment 700S: 700 Flow Length=500' Slope=0.0900 '/' Tc=7.9 min CN=WQ Runoff=52.51 cfs 2.836 af Runoff Area=0.636 ac 16.77% Impervious Runoff Depth=4.67"Subcatchment 701S: 701 Flow Length=255' Slope=0.0400 '/' Tc=6.0 min CN=WQ Runoff=4.87 cfs 0.247 af Runoff Area=1.094 ac 15.23% Impervious Runoff Depth=4.68"Subcatchment 800S: 800 Flow Length=355' Slope=0.0400 '/' Tc=7.8 min CN=WQ Runoff=7.70 cfs 0.426 af Runoff Area=1.215 ac 34.66% Impervious Runoff Depth=5.36"Subcatchment 900S: 900 Flow Length=470' Slope=0.0300 '/' Tc=9.4 min CN=WQ Runoff=8.79 cfs 0.543 af Runoff Area=6.910 ac 46.89% Impervious Runoff Depth=5.65"Subcatchment BLL_PR101: BLL_PR101 Tc=15.0 min CN=WQ Runoff=41.80 cfs 3.253 af Runoff Area=0.740 ac 10.81% Impervious Runoff Depth=4.55"Subcatchment BLL_PR102: BLL_PR102 Tc=15.0 min CN=WQ Runoff=3.80 cfs 0.280 af Runoff Area=0.250 ac 16.00% Impervious Runoff Depth=4.83"Subcatchment BLL_PR103: BLL_PR103 Tc=15.0 min CN=WQ Runoff=1.35 cfs 0.101 af Runoff Area=0.100 ac 30.00% Impervious Runoff Depth=5.23"Subcatchment BLL_PR104: BLL_PR104 Tc=15.0 min CN=WQ Runoff=0.57 cfs 0.044 af Runoff Area=0.260 ac 23.08% Impervious Runoff Depth=5.04"Subcatchment BLL_PR105: BLL_PR105 Tc=15.0 min CN=WQ Runoff=1.45 cfs 0.109 af Runoff Area=0.080 ac 37.50% Impervious Runoff Depth=5.44"Subcatchment BLL_PR106: BLL_PR106 Tc=15.0 min CN=WQ Runoff=0.47 cfs 0.036 af Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 338HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=0.150 ac 20.00% Impervious Runoff Depth=4.93"Subcatchment BLL_PR107: BLL_PR107 Tc=15.0 min CN=WQ Runoff=0.82 cfs 0.062 af Runoff Area=0.160 ac 25.00% Impervious Runoff Depth=5.09"Subcatchment BLL_PR108: BLL_PR108 Tc=15.0 min CN=WQ Runoff=0.90 cfs 0.068 af Runoff Area=0.160 ac 18.75% Impervious Runoff Depth=4.92"Subcatchment BLL_PR109: BLL_PR109 Tc=15.0 min CN=WQ Runoff=0.88 cfs 0.066 af Runoff Area=0.360 ac 16.67% Impervious Runoff Depth=4.86"Subcatchment BLL_PR110: BLL_PR110 Tc=15.0 min CN=WQ Runoff=1.96 cfs 0.146 af Runoff Area=0.280 ac 17.86% Impervious Runoff Depth=4.90"Subcatchment BLL_PR111: BLL_PR111 Tc=15.0 min CN=WQ Runoff=1.53 cfs 0.114 af Runoff Area=0.520 ac 0.00% Impervious Runoff Depth=4.96"Subcatchment BLL_PR112: BLL_PR112 Tc=15.0 min CN=79 Runoff=2.96 cfs 0.215 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=3.96"Subcatchment BLL_PR113: BLL_PR113 Flow Length=180' Slope=0.0830 '/' Tc=20.5 min CN=70 Runoff=0.12 cfs 0.010 af Runoff Area=4.470 ac 55.48% Impervious Runoff Depth=5.94"Subcatchment BLL_PR201: BLL_PR201 Tc=15.0 min CN=WQ Runoff=28.14 cfs 2.212 af Runoff Area=0.920 ac 18.48% Impervious Runoff Depth=4.90"Subcatchment BLL_PR202: BLL_PR202 Tc=15.0 min CN=WQ Runoff=5.04 cfs 0.376 af Runoff Area=0.340 ac 26.47% Impervious Runoff Depth=5.12"Subcatchment BLL_PR203: BLL_PR203 Tc=15.0 min CN=WQ Runoff=1.92 cfs 0.145 af Runoff Area=1.400 ac 17.86% Impervious Runoff Depth=4.79"Subcatchment BLL_PR204: BLL_PR204 Tc=15.0 min CN=WQ Runoff=7.49 cfs 0.559 af Runoff Area=1.750 ac 12.57% Impervious Runoff Depth=4.62"Subcatchment BLL_PR205: BLL_PR205 Tc=15.0 min CN=WQ Runoff=9.12 cfs 0.674 af Runoff Area=0.310 ac 0.00% Impervious Runoff Depth=4.96"Subcatchment BLL_PR206: BLL_PR206 Tc=15.0 min CN=79 Runoff=1.77 cfs 0.128 af Runoff Area=9.030 ac 0.78% Impervious Runoff Depth=4.12"Subcatchment BLL_PR301: BLL_PR301 Flow Length=300' Slope=0.1500 '/' Tc=24.4 min CN=WQ Runoff=33.82 cfs 3.101 af Runoff Area=1.420 ac 7.04% Impervious Runoff Depth=4.29"Subcatchment BLL_PR302: BLL_PR302 Flow Length=570' Tc=36.5 min CN=WQ Runoff=4.42 cfs 0.507 af Runoff Area=0.230 ac 0.00% Impervious Runoff Depth=4.96"Subcatchment BLL_PR303: BLL_PR303 Flow Length=800' Tc=46.2 min CN=79 Runoff=0.74 cfs 0.095 af Runoff Area=2.850 ac 16.84% Impervious Runoff Depth=4.81"Subcatchment BLL_PR304: BLL_PR304 Flow Length=300' Slope=0.1660 '/' Tc=23.4 min CN=WQ Runoff=12.37 cfs 1.143 af Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 339HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=0.100 ac 0.00% Impervious Runoff Depth=4.40"Subcatchment BLL_PR401: BLL_PR401 Tc=15.0 min CN=74 Runoff=0.51 cfs 0.037 af Runoff Area=0.090 ac 55.56% Impervious Runoff Depth=5.94"Subcatchment BLL_PR402: BLL_PR402 Tc=15.0 min CN=WQ Runoff=0.57 cfs 0.045 af Runoff Area=0.110 ac 45.45% Impervious Runoff Depth=5.66"Subcatchment BLL_PR403: BLL_PR403 Tc=15.0 min CN=WQ Runoff=0.67 cfs 0.052 af Runoff Area=0.310 ac 0.00% Impervious Runoff Depth=4.40"Subcatchment BLL_PR501: BLL_PR501 Tc=15.0 min CN=74 Runoff=1.58 cfs 0.114 af Runoff Area=0.270 ac 62.96% Impervious Runoff Depth=6.15"Subcatchment BLL_PR502: BLL_PR502 Tc=15.0 min CN=WQ Runoff=1.74 cfs 0.138 af Runoff Area=0.010 ac 0.00% Impervious Runoff Depth=4.40"Subcatchment BLL_PR503: BLL_PR503 Tc=15.0 min CN=74 Runoff=0.05 cfs 0.004 af Runoff Area=1.030 ac 15.53% Impervious Runoff Depth=4.83"Subcatchment BLL_PR504: BLL_PR504 Tc=15.0 min CN=WQ Runoff=5.59 cfs 0.415 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=3.96"Subcatchment BLL_PR505: BLL_PR505 Flow Length=50' Slope=0.1200 '/' Tc=6.4 min CN=70 Runoff=0.20 cfs 0.010 af Runoff Area=1.110 ac 7.21% Impervious Runoff Depth=4.32"Subcatchment BLL_PR601: BLL_PR601 Flow Length=180' Slope=0.0667 '/' Tc=9.1 min CN=WQ Runoff=6.87 cfs 0.400 af Runoff Area=0.130 ac 38.46% Impervious Runoff Depth=5.47"Subcatchment BL_PR207: BLL_PR207 Tc=15.0 min CN=WQ Runoff=0.77 cfs 0.059 af Runoff Area=7.420 ac 0.00% Impervious Runoff Depth=4.85"Subcatchment LU 10-1: LU 10-1 Tc=6.0 min CN=78 Runoff=60.73 cfs 2.998 af Runoff Area=79.621 ac 0.00% Impervious Runoff Depth=4.62"Subcatchment LU 2-1: LU 2-1 Tc=52.0 min CN=76 Runoff=223.31 cfs 30.682 af Runoff Area=9.880 ac 0.00% Impervious Runoff Depth=4.29"Subcatchment LU 2-10: LU 2-10 Tc=6.0 min CN=73 Runoff=72.06 cfs 3.533 af Runoff Area=21.970 ac 0.00% Impervious Runoff Depth=4.51"Subcatchment LU 2-11: LU 2-11 Tc=12.0 min CN=75 Runoff=127.44 cfs 8.262 af Runoff Area=9.720 ac 0.00% Impervious Runoff Depth=4.18"Subcatchment LU 2-12: LU 2-12 Tc=6.0 min CN=72 Runoff=69.09 cfs 3.386 af Runoff Area=15.390 ac 0.00% Impervious Runoff Depth=4.18"Subcatchment LU 2-13: LU 2-13 Tc=7.0 min CN=72 Runoff=103.72 cfs 5.362 af Runoff Area=25.920 ac 0.00% Impervious Runoff Depth=4.07"Subcatchment LU 2-14: LU 2-14 Tc=12.0 min CN=71 Runoff=135.63 cfs 8.793 af Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 340HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=4.310 ac 0.00% Impervious Runoff Depth=4.18"Subcatchment LU 2-15: LU 2-15 Tc=4.0 min CN=72 Runoff=34.06 cfs 1.502 af Runoff Area=2.560 ac 0.00% Impervious Runoff Depth=4.40"Subcatchment LU 2-16: LU 2-16 Tc=4.0 min CN=74 Runoff=21.26 cfs 0.939 af Runoff Area=8.180 ac 0.00% Impervious Runoff Depth=4.74"Subcatchment LU 2-18: LU 2-18 Tc=7.0 min CN=77 Runoff=62.21 cfs 3.228 af Runoff Area=11.910 ac 0.00% Impervious Runoff Depth=4.40"Subcatchment LU 2-2: LU 2-2 Tc=7.0 min CN=74 Runoff=84.46 cfs 4.369 af Runoff Area=47.530 ac 0.00% Impervious Runoff Depth=4.29"Subcatchment LU 2-3: LU 2-3 Tc=17.0 min CN=73 Runoff=222.49 cfs 16.996 af Runoff Area=12.300 ac 0.00% Impervious Runoff Depth=4.96"Subcatchment LU 2-4: LU 2-4 Tc=8.0 min CN=79 Runoff=92.56 cfs 5.085 af Runoff Area=9.150 ac 0.00% Impervious Runoff Depth=4.85"Subcatchment LU 2-5: LU 2-5 Tc=7.0 min CN=78 Runoff=71.12 cfs 3.697 af Runoff Area=8.904 ac 0.00% Impervious Runoff Depth=4.74"Subcatchment LU 2-7: LU 2-7 Tc=7.0 min CN=77 Runoff=67.72 cfs 3.514 af Runoff Area=5.830 ac 0.00% Impervious Runoff Depth=4.29"Subcatchment LU 2-8: LU 2-8 Tc=5.0 min CN=73 Runoff=44.80 cfs 2.085 af Runoff Area=11.210 ac 0.00% Impervious Runoff Depth=4.07"Subcatchment LU 2-9: LU 2-9 Tc=7.0 min CN=71 Runoff=73.55 cfs 3.803 af Runoff Area=5.464 ac 5.19% Impervious Runoff Depth=4.42"Subcatchment W11S: W11 Flow Length=650' Slope=0.0380 '/' Tc=13.8 min CN=WQ Runoff=28.88 cfs 2.011 af Runoff Area=0.734 ac 6.42% Impervious Runoff Depth=4.41"Subcatchment W12S: W12 Flow Length=130' Slope=0.1200 '/' Tc=2.1 min CN=WQ Runoff=6.50 cfs 0.269 af Runoff Area=1.729 ac 6.61% Impervious Runoff Depth=4.52"Subcatchment W13S: W13 Flow Length=715' Slope=0.0900 '/' Tc=9.4 min CN=WQ Runoff=11.05 cfs 0.651 af Runoff Area=2.452 ac 13.89% Impervious Runoff Depth=4.67"Subcatchment W14S: W14 Flow Length=715' Slope=0.0900 '/' Tc=9.1 min CN=WQ Runoff=16.19 cfs 0.954 af Runoff Area=0.575 ac 7.12% Impervious Runoff Depth=4.37"Subcatchment W6S: W6 Flow Length=200' Slope=0.0800 '/' Tc=3.7 min CN=WQ Runoff=4.73 cfs 0.209 af Avg. Flow Depth=2.04' Max Vel=3.95 fps Inflow=20.24 cfs 42.026 afReach Pipe from W2 to W1: Pipe from 36.0" Round Pipe n=0.013 L=212.0' S=0.0014 '/' Capacity=25.09 cfs Outflow=20.24 cfs 42.026 af Peak Elev=970.12' Storage=738,528 cf Inflow=239.81 cfs 22.722 afPond 300P: Pond with IESF Primary=66.79 cfs 18.289 af Secondary=37.29 cfs 4.433 af Outflow=104.08 cfs 22.722 af Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 341HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=986.31' Storage=78,514 cf Inflow=26.67 cfs 2.226 afPond 400P: County pond with IESF Outflow=8.11 cfs 2.226 af Peak Elev=985.82' Inflow=22.94 cfs 1.988 afPond 490: CB inlet Primary=10.32 cfs 1.596 af Secondary=12.62 cfs 0.392 af Outflow=22.94 cfs 1.988 af Peak Elev=982.81' Inflow=12.62 cfs 0.392 afPond 491P: CB inlet Outflow=12.62 cfs 0.392 af Peak Elev=985.50' Storage=3,363 cf Inflow=12.73 cfs 0.765 afPond 500P: IESF Outflow=12.68 cfs 0.765 af Peak Elev=999.88' Storage=1,987 cf Inflow=5.88 cfs 0.547 afPond 600P: rain garden Discarded=0.01 cfs 0.076 af Primary=5.72 cfs 0.506 af Outflow=5.72 cfs 0.582 af Peak Elev=1,001.94' Storage=1,885 cf Inflow=7.70 cfs 0.426 afPond 800P: rain garden Discarded=0.01 cfs 0.036 af Primary=7.38 cfs 0.390 af Outflow=7.39 cfs 0.426 af Peak Elev=992.47' Storage=3,442 cf Inflow=8.79 cfs 0.543 afPond 900P: IESF Outflow=8.31 cfs 0.543 af Peak Elev=997.75' Storage=111 cf Inflow=5.04 cfs 0.376 afPond BLL_CB11: Bluffs at Lake Lucy CB 11 Primary=5.03 cfs 0.376 af Secondary=0.00 cfs 0.000 af Outflow=5.03 cfs 0.376 af Peak Elev=1,014.10' Storage=3 cf Inflow=0.77 cfs 0.059 afPond BLL_CB13A: Bluffs at Lake Lucy CB 13A Primary=0.77 cfs 0.059 af Secondary=0.00 cfs 0.000 af Outflow=0.77 cfs 0.059 af Peak Elev=978.61' Storage=6 cf Inflow=0.90 cfs 0.068 afPond BLL_CB22: Bluffs at Lake Lucy CB 22 Primary=0.90 cfs 0.068 af Secondary=0.00 cfs 0.000 af Outflow=0.90 cfs 0.068 af Peak Elev=978.61' Storage=5 cf Inflow=0.88 cfs 0.066 afPond BLL_CB23: Bluffs at Lake Lucy CB 23 Primary=0.88 cfs 0.066 af Secondary=0.00 cfs 0.000 af Outflow=0.88 cfs 0.066 af Peak Elev=979.11' Storage=5 cf Inflow=0.82 cfs 0.062 afPond BLL_CB24: Bluffs at Lake Lucy CB 24 Primary=0.82 cfs 0.062 af Secondary=0.00 cfs 0.000 af Outflow=0.82 cfs 0.062 af Peak Elev=981.07' Storage=3 cf Inflow=0.47 cfs 0.036 afPond BLL_CB25: Bluffs at Lake Lucy CB 25 Primary=0.47 cfs 0.036 af Secondary=0.00 cfs 0.000 af Outflow=0.47 cfs 0.036 af Peak Elev=983.16' Storage=16 cf Inflow=1.45 cfs 0.109 afPond BLL_CB26: Bluffs at Lake Lucy CB 26 Primary=1.45 cfs 0.109 af Secondary=0.00 cfs 0.000 af Outflow=1.45 cfs 0.109 af Peak Elev=986.19' Storage=10 cf Inflow=1.96 cfs 0.146 afPond BLL_CB27: Bluffs at Lake Lucy CB 27 Primary=1.96 cfs 0.146 af Secondary=0.00 cfs 0.000 af Outflow=1.96 cfs 0.146 af Peak Elev=995.16' Storage=17 cf Inflow=1.53 cfs 0.114 afPond BLL_CB28: Bluffs at Lake Lucy CB 28 Primary=1.53 cfs 0.114 af Secondary=0.00 cfs 0.000 af Outflow=1.53 cfs 0.114 af Peak Elev=1,000.15' Storage=13 cf Inflow=1.35 cfs 0.101 afPond BLL_CB30: Bluffs at Lake Lucy CB 30 Primary=1.35 cfs 0.101 af Secondary=0.00 cfs 0.000 af Outflow=1.35 cfs 0.101 af Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 342HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=1,004.44' Storage=132 cf Inflow=6.77 cfs 0.495 afPond BLL_CB37: Bluffs at Lake Lucy CB 37 Primary=6.76 cfs 0.495 af Secondary=0.00 cfs 0.000 af Outflow=6.76 cfs 0.495 af Peak Elev=1,010.47' Storage=51 cf Inflow=7.49 cfs 0.559 afPond BLL_CB9: Bluffs at Lake Lucy CB 9 Primary=7.49 cfs 0.559 af Secondary=0.00 cfs 0.000 af Outflow=7.49 cfs 0.559 af Peak Elev=976.99' Storage=190,429 cf Inflow=58.59 cfs 4.503 afPond BLL_Pond1: Bluffs at Lake Lucy Primary=11.80 cfs 4.503 af Secondary=0.00 cfs 0.000 af Outflow=11.80 cfs 4.503 af Peak Elev=967.32' Storage=117,462 cf Inflow=54.23 cfs 4.153 afPond BLL_Pond2: Bluffs at Lake Lucy Discarded=0.24 cfs 1.472 af Primary=15.23 cfs 2.682 af Secondary=0.00 cfs 0.000 af Outflow=15.47 cfs 4.153 af Peak Elev=989.47' Inflow=11.78 cfs 4.452 afPond CB-9: EX CB-9 24.0" Round Culvert n=0.025 L=94.0' S=0.0755 '/' Outflow=11.78 cfs 4.452 af Peak Elev=997.09' Storage=4 cf Inflow=0.57 cfs 0.044 afPond GB_CB27: Bluffs at Lake Lucy CB 29 Primary=0.57 cfs 0.044 af Secondary=0.00 cfs 0.000 af Outflow=0.57 cfs 0.044 af Inflow=188.43 cfs 141.337 afPond LUCY: LAKE LUCY Primary=188.43 cfs 141.337 af Peak Elev=958.84' Storage=1,166,110 cf Inflow=420.61 cfs 110.263 afPond P-LU 2-1: P-LU 2-1 Outflow=182.72 cfs 138.601 af Peak Elev=977.70' Storage=1.189 af Inflow=72.06 cfs 3.533 afPond P-LU 2-10: P-LU 2-10 Outflow=18.74 cfs 3.368 af Peak Elev=974.34' Storage=21.184 af Inflow=292.63 cfs 24.273 afPond P-LU 2-11: P-LU 2-11 15.0" Round Culvert n=0.011 L=114.0' S=0.0004 '/' Outflow=4.38 cfs 17.243 af Peak Elev=980.08' Storage=1.744 af Inflow=69.09 cfs 3.386 afPond P-LU 2-12: P-LU 2-12 Primary=9.81 cfs 2.284 af Secondary=5.90 cfs 0.082 af Outflow=15.71 cfs 2.366 af Peak Elev=993.90' Storage=2.111 af Inflow=103.72 cfs 5.362 afPond P-LU 2-13: P-LU 2-13 24.0" Round Culvert n=0.011 L=110.0' S=0.0600 '/' Outflow=27.50 cfs 4.850 af Peak Elev=973.67' Storage=9.447 af Inflow=138.51 cfs 30.050 afPond P-LU 2-2: P-LU 2-2 Primary=7.33 cfs 30.048 af Secondary=0.22 cfs 0.002 af Outflow=7.33 cfs 30.049 af Peak Elev=993.92' Storage=18.720 af Inflow=240.02 cfs 18.720 afPond P-LU 2-3: P-LU 2-3 (LAKE Outflow=0.00 cfs 0.000 af Peak Elev=976.04' Storage=0.669 af Inflow=99.57 cfs 5.765 afPond P-LU 2-4: P-LU 2-4 Primary=12.52 cfs 2.490 af Secondary=84.19 cfs 2.955 af Outflow=96.71 cfs 5.445 af Peak Elev=967.53' Storage=2.056 af Inflow=71.12 cfs 3.697 afPond P-LU 2-5: P-LU 2-5 Outflow=15.79 cfs 3.716 af Peak Elev=982.43' Storage=411,780 cf Inflow=56.66 cfs 9.453 afPond P-LU 2-6: Wetland 11 15.0" Round Culvert n=0.013 L=50.0' S=0.0104 '/' Outflow=0.00 cfs 0.000 af Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 343HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=1,000.79' Storage=93,196 cf Inflow=67.72 cfs 3.514 afPond P-LU 2-7: P-LU 2-7 12.0" Round Culvert n=0.013 L=60.8' S=0.0197 '/' Outflow=8.16 cfs 3.514 af Peak Elev=997.28' Storage=0.572 af Inflow=44.80 cfs 2.085 afPond P-LU 2-8: P-LU 2-8 Primary=3.34 cfs 0.931 af Secondary=40.08 cfs 0.793 af Outflow=43.42 cfs 1.724 af Peak Elev=977.89' Storage=3.242 af Inflow=73.55 cfs 3.803 afPond P-LU 2-9: P-LU 2-9 Outflow=1.21 cfs 1.973 af Peak Elev=995.51' Storage=19,443 cf Inflow=21.26 cfs 0.939 afPond P-LU-2-16: P-LU-2-16 12.0" Round Culvert n=0.013 L=93.0' S=0.0669 '/' Outflow=3.66 cfs 0.938 af Peak Elev=966.27' Storage=1.148 af Inflow=61.85 cfs 3.131 afPond P-LU10-1: P-LU 10-1 Primary=6.18 cfs 2.008 af Secondary=36.16 cfs 0.729 af Outflow=42.35 cfs 2.737 af Peak Elev=994.55' Storage=0.145 af Inflow=6.50 cfs 0.269 afPond W12: Wetland 12 15.0" Round Culvert n=0.013 L=45.0' S=0.0040 '/' Outflow=0.96 cfs 0.190 af Peak Elev=993.38' Storage=10,269 cf Inflow=11.05 cfs 0.651 afPond W13: Wetland 13 Outflow=5.88 cfs 0.525 af Peak Elev=988.05' Storage=9,194 cf Inflow=27.66 cfs 2.022 afPond W14: Wetland 14 Outflow=22.94 cfs 1.988 af Peak Elev=973.58' Storage=238,610 cf Inflow=161.41 cfs 39.121 afPond W2: Wetland 2 Primary=8.77 cfs 37.524 af Secondary=16.12 cfs 1.597 af Outflow=24.33 cfs 39.121 af Peak Elev=1,001.10' Storage=12,189 cf Inflow=10.31 cfs 0.600 afPond W6: Wetland 6 Outflow=4.25 cfs 0.344 af Total Runoff Area = 401.189 ac Runoff Volume = 154.836 af Average Runoff Depth = 4.63" 92.11% Pervious = 369.521 ac 7.89% Impervious = 31.668 ac Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 344HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 300S: 300 Runoff = 201.02 cfs @ 12.26 hrs, Volume= 18.157 af, Depth= 5.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.755 70 Woods Good, HSG C * 0.637 71 Meadow, HSG C * 19.586 74 75% Grass cover Good, HSG C * 17.584 98 Impervious, HSG C 38.561 Weighted Average 20.977 54.40% Pervious Area 17.584 45.60% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.7 1,575 0.0350 1.27 Lag/CN Method, Subcatchment 300S: 300 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)220 210 200 190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=38.561 ac Runoff Volume=18.157 af Runoff Depth=5.65" Flow Length=1,575' Slope=0.0350 '/' Tc=20.7 min CN=WQ 201.02 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 345HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 301S: 301 Runoff = 52.11 cfs @ 12.06 hrs, Volume= 2.387 af, Depth= 5.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.991 98 Water Surface, HSG C * 1.761 71 Meadow, HSG C * 2.200 74 75% Grass cover Good, HSG C * 0.654 98 Impervious, HSG C 5.606 Weighted Average 3.961 70.67% Pervious Area 1.644 29.33% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.5 275 0.1030 1.30 Lag/CN Method, Subcatchment 301S: 301 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=5.606 ac Runoff Volume=2.387 af Runoff Depth=5.11" Flow Length=275' Slope=0.1030 '/' Tc=3.5 min CN=WQ 52.11 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 346HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 400S: Proposed CR 117 Runoff = 13.07 cfs @ 12.25 hrs, Volume= 1.199 af, Depth= 6.54" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description 1.700 98 Paved roads w/curbs & sewers, HSG C 0.500 74 >75% Grass cover, Good, HSG C 2.200 Weighted Average 0.500 22.73% Pervious Area 1.700 77.27% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.0 Direct Entry, Subcatchment 400S: Proposed CR 117 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=2.200 ac Runoff Volume=1.199 af Runoff Depth=6.54" Tc=20.0 min CN=WQ 13.07 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 347HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 401S: 401 Runoff = 17.46 cfs @ 12.12 hrs, Volume= 1.027 af, Depth= 4.74" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.243 70 Woods Good, HSG C * 0.186 98 Water Surface, HSG C * 0.897 71 Meadow, HSG C * 0.997 74 75% Grass cover Good, HSG C * 0.276 98 Impervious, HSG C 2.600 Weighted Average 2.138 82.21% Pervious Area 0.462 17.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.9 500 0.0500 0.93 Lag/CN Method, Subcatchment 401S: 401 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=2.600 ac Runoff Volume=1.027 af Runoff Depth=4.74" Flow Length=500' Slope=0.0500 '/' Tc=8.9 min CN=WQ 17.46 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 348HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 500S: 500 Runoff = 12.73 cfs @ 12.12 hrs, Volume= 0.765 af, Depth= 5.20" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.097 71 Meadow, HSG C * 1.149 74 75% Grass cover Good, HSG C * 0.520 98 Impervious, HSG C 1.766 Weighted Average 1.246 70.56% Pervious Area 0.520 29.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.0 510 0.0400 0.95 Lag/CN Method, Subcatchment 500S: 500 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=1.766 ac Runoff Volume=0.765 af Runoff Depth=5.20" Flow Length=510' Slope=0.0400 '/' Tc=9.0 min CN=WQ 12.73 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 349HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 600S: 600 Runoff = 3.29 cfs @ 12.14 hrs, Volume= 0.204 af, Depth= 4.62" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.066 70 Woods Good, HSG C * 0.221 71 Meadow, HSG C * 0.163 74 75% Grass cover Good, HSG C * 0.079 98 Impervious, HSG C 0.529 Weighted Average 0.450 85.12% Pervious Area 0.079 14.88% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.2 495 0.0400 0.81 Lag/CN Method, Subcatchment 600S: 600 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.529 ac Runoff Volume=0.204 af Runoff Depth=4.62" Flow Length=495' Slope=0.0400 '/' Tc=10.2 min CN=WQ 3.29 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 350HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 700S: 700 Runoff = 52.51 cfs @ 12.11 hrs, Volume= 2.836 af, Depth= 4.09" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 2.897 70 Woods Good, HSG C * 4.268 71 Meadow, HSG C * 1.101 74 75% Grass cover Good, HSG C * 0.047 98 Impervious, HSG C 8.313 Weighted Average 8.266 99.44% Pervious Area 0.047 0.56% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.9 500 0.0900 1.05 Lag/CN Method, Subcatchment 700S: 700 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=8.313 ac Runoff Volume=2.836 af Runoff Depth=4.09" Flow Length=500' Slope=0.0900 '/' Tc=7.9 min CN=WQ 52.51 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 351HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 701S: 701 Runoff = 4.87 cfs @ 12.09 hrs, Volume= 0.247 af, Depth= 4.67" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.380 71 Meadow, HSG C * 0.149 74 75% Grass cover Good, HSG C * 0.107 98 Impervious, HSG C 0.636 Weighted Average 0.529 83.23% Pervious Area 0.107 16.77% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 255 0.0400 0.71 Lag/CN Method, Subcatchment 701S: 701 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.636 ac Runoff Volume=0.247 af Runoff Depth=4.67" Flow Length=255' Slope=0.0400 '/' Tc=6.0 min CN=WQ 4.87 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 352HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 800S: 800 Runoff = 7.70 cfs @ 12.11 hrs, Volume= 0.426 af, Depth= 4.68" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.484 71 Meadow, HSG C * 0.443 74 75% Grass cover Good, HSG C * 0.167 98 Impervious, HSG C 1.094 Weighted Average 0.927 84.77% Pervious Area 0.167 15.23% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.8 355 0.0400 0.76 Lag/CN Method, Subcatchment 800S: 800 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=1.094 ac Runoff Volume=0.426 af Runoff Depth=4.68" Flow Length=355' Slope=0.0400 '/' Tc=7.8 min CN=WQ 7.70 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 353HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 900S: 900 Runoff = 8.79 cfs @ 12.13 hrs, Volume= 0.543 af, Depth= 5.36" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.000 70 Woods Good, HSG C * 0.794 74 75% Grass cover Good, HSG C * 0.421 98 Impervious, HSG C 1.215 Weighted Average 0.794 65.34% Pervious Area 0.421 34.66% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 470 0.0300 0.83 Lag/CN Method, Subcatchment 900S: 900 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=1.215 ac Runoff Volume=0.543 af Runoff Depth=5.36" Flow Length=470' Slope=0.0300 '/' Tc=9.4 min CN=WQ 8.79 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 354HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR101: BLL_PR101 Runoff = 41.80 cfs @ 12.20 hrs, Volume= 3.253 af, Depth= 5.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.030 98 Existing County Road * 2.490 98 Proposed homes and road * 2.870 74 Proposed lawn * 0.560 98 Pond * 0.150 98 Proposed sidewalk * 0.010 98 Proposed trail 0.800 70 Woods, Good, HSG C 6.910 Weighted Average 3.670 53.11% Pervious Area 3.240 46.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR101: BLL_PR101 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=6.910 ac Runoff Volume=3.253 af Runoff Depth=5.65" Tc=15.0 min CN=WQ 41.80 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 355HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR102: BLL_PR102 Runoff = 3.80 cfs @ 12.20 hrs, Volume= 0.280 af, Depth= 4.55" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.080 98 Proposed homes and road * 0.400 74 Proposed lawn 0.260 70 Woods, Good, HSG C 0.740 Weighted Average 0.660 89.19% Pervious Area 0.080 10.81% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR102: BLL_PR102 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.740 ac Runoff Volume=0.280 af Runoff Depth=4.55" Tc=15.0 min CN=WQ 3.80 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 356HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR103: BLL_PR103 Runoff = 1.35 cfs @ 12.20 hrs, Volume= 0.101 af, Depth= 4.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.040 98 Proposed homes and road * 0.200 74 Proposed lawn 0.010 70 Woods, Good, HSG C 0.250 Weighted Average 0.210 84.00% Pervious Area 0.040 16.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR103: BLL_PR103 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.250 ac Runoff Volume=0.101 af Runoff Depth=4.83" Tc=15.0 min CN=WQ 1.35 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 357HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR104: BLL_PR104 Runoff = 0.57 cfs @ 12.20 hrs, Volume= 0.044 af, Depth= 5.23" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.030 98 Proposed homes and road * 0.070 74 Proposed lawn 0.100 Weighted Average 0.070 70.00% Pervious Area 0.030 30.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR104: BLL_PR104 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.100 ac Runoff Volume=0.044 af Runoff Depth=5.23" Tc=15.0 min CN=WQ 0.57 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 358HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR105: BLL_PR105 Runoff = 1.45 cfs @ 12.20 hrs, Volume= 0.109 af, Depth= 5.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.060 98 Proposed homes and road * 0.200 74 Proposed lawn 0.260 Weighted Average 0.200 76.92% Pervious Area 0.060 23.08% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR105: BLL_PR105 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.260 ac Runoff Volume=0.109 af Runoff Depth=5.04" Tc=15.0 min CN=WQ 1.45 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 359HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR106: BLL_PR106 Runoff = 0.47 cfs @ 12.20 hrs, Volume= 0.036 af, Depth= 5.44" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.030 98 Proposed homes and road * 0.050 74 Proposed lawn 0.080 Weighted Average 0.050 62.50% Pervious Area 0.030 37.50% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR106: BLL_PR106 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.52 0.5 0.48 0.46 0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.080 ac Runoff Volume=0.036 af Runoff Depth=5.44" Tc=15.0 min CN=WQ 0.47 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 360HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR107: BLL_PR107 Runoff = 0.82 cfs @ 12.20 hrs, Volume= 0.062 af, Depth= 4.93" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.030 98 Proposed homes and road * 0.110 74 Proposed lawn 0.010 70 Woods, Good, HSG C 0.150 Weighted Average 0.120 80.00% Pervious Area 0.030 20.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR107: BLL_PR107 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.9 0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.150 ac Runoff Volume=0.062 af Runoff Depth=4.93" Tc=15.0 min CN=WQ 0.82 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 361HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR108: BLL_PR108 Runoff = 0.90 cfs @ 12.20 hrs, Volume= 0.068 af, Depth= 5.09" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.040 98 Proposed homes and road * 0.120 74 Proposed lawn 0.160 Weighted Average 0.120 75.00% Pervious Area 0.040 25.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR108: BLL_PR108 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.160 ac Runoff Volume=0.068 af Runoff Depth=5.09" Tc=15.0 min CN=WQ 0.90 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 362HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR109: BLL_PR109 Runoff = 0.88 cfs @ 12.20 hrs, Volume= 0.066 af, Depth= 4.92" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.030 98 Proposed homes and road * 0.130 74 Proposed lawn 0.160 Weighted Average 0.130 81.25% Pervious Area 0.030 18.75% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR109: BLL_PR109 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.95 0.9 0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.160 ac Runoff Volume=0.066 af Runoff Depth=4.92" Tc=15.0 min CN=WQ 0.88 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 363HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR110: BLL_PR110 Runoff = 1.96 cfs @ 12.20 hrs, Volume= 0.146 af, Depth= 4.86" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.060 98 Proposed homes and road * 0.300 74 Proposed lawn 0.360 Weighted Average 0.300 83.33% Pervious Area 0.060 16.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR110: BLL_PR110 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.360 ac Runoff Volume=0.146 af Runoff Depth=4.86" Tc=15.0 min CN=WQ 1.96 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 364HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR111: BLL_PR111 Runoff = 1.53 cfs @ 12.20 hrs, Volume= 0.114 af, Depth= 4.90" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.050 98 Proposed homes and road * 0.230 74 Proposed lawn 0.280 Weighted Average 0.230 82.14% Pervious Area 0.050 17.86% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR111: BLL_PR111 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.280 ac Runoff Volume=0.114 af Runoff Depth=4.90" Tc=15.0 min CN=WQ 1.53 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 365HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR112: BLL_PR112 Runoff = 2.96 cfs @ 12.20 hrs, Volume= 0.215 af, Depth= 4.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.520 79 CN from Previous Model 0.520 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR112: BLL_PR112 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.520 ac Runoff Volume=0.215 af Runoff Depth=4.96" Tc=15.0 min CN=79 2.96 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 366HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR113: BLL_PR113 Runoff = 0.12 cfs @ 12.28 hrs, Volume= 0.010 af, Depth= 3.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description 0.030 70 Woods, Good, HSG C 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.5 180 0.0830 0.15 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_PR113: BLL_PR113 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.13 0.125 0.12 0.115 0.11 0.105 0.1 0.095 0.09 0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.030 ac Runoff Volume=0.010 af Runoff Depth=3.96" Flow Length=180' Slope=0.0830 '/' Tc=20.5 min CN=70 0.12 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 367HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR201: BLL_PR201 Runoff = 28.14 cfs @ 12.20 hrs, Volume= 2.212 af, Depth= 5.94" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 1.830 98 Proposed homes and road * 1.990 74 Proposed lawn * 0.570 98 Pond * 0.040 98 Proposed sidewalk * 0.040 98 Proposed trail 4.470 Weighted Average 1.990 44.52% Pervious Area 2.480 55.48% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR201: BLL_PR201 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=4.470 ac Runoff Volume=2.212 af Runoff Depth=5.94" Tc=15.0 min CN=WQ 28.14 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 368HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR202: BLL_PR202 Runoff = 5.04 cfs @ 12.20 hrs, Volume= 0.376 af, Depth= 4.90" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.170 98 Proposed homes and road * 0.730 74 Proposed lawn 0.020 70 Woods, Good, HSG C 0.920 Weighted Average 0.750 81.52% Pervious Area 0.170 18.48% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR202: BLL_PR202 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.920 ac Runoff Volume=0.376 af Runoff Depth=4.90" Tc=15.0 min CN=WQ 5.04 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 369HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR203: BLL_PR203 Runoff = 1.92 cfs @ 12.20 hrs, Volume= 0.145 af, Depth= 5.12" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.090 98 Proposed homes and road * 0.240 74 Proposed lawn 0.010 70 Woods, Good, HSG C 0.340 Weighted Average 0.250 73.53% Pervious Area 0.090 26.47% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR203: BLL_PR203 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.340 ac Runoff Volume=0.145 af Runoff Depth=5.12" Tc=15.0 min CN=WQ 1.92 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 370HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR204: BLL_PR204 Runoff = 7.49 cfs @ 12.20 hrs, Volume= 0.559 af, Depth= 4.79" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.250 98 Proposed homes and road * 0.810 74 Proposed lawn 0.340 70 Woods, Good, HSG C 1.400 Weighted Average 1.150 82.14% Pervious Area 0.250 17.86% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR204: BLL_PR204 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=1.400 ac Runoff Volume=0.559 af Runoff Depth=4.79" Tc=15.0 min CN=WQ 7.49 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 371HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR205: BLL_PR205 Runoff = 9.12 cfs @ 12.20 hrs, Volume= 0.674 af, Depth= 4.62" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.110 98 Proposed homes and road * 1.030 74 Proposed lawn * 0.110 98 Proposed trail 0.500 70 Woods, Good, HSG C 1.750 Weighted Average 1.530 87.43% Pervious Area 0.220 12.57% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR205: BLL_PR205 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=1.750 ac Runoff Volume=0.674 af Runoff Depth=4.62" Tc=15.0 min CN=WQ 9.12 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 372HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR206: BLL_PR206 Runoff = 1.77 cfs @ 12.20 hrs, Volume= 0.128 af, Depth= 4.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.310 79 CN from Previous Model 0.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR206: BLL_PR206 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.310 ac Runoff Volume=0.128 af Runoff Depth=4.96" Tc=15.0 min CN=79 1.77 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 373HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR301: BLL_PR301 Runoff = 33.82 cfs @ 12.34 hrs, Volume= 3.101 af, Depth= 4.12" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 2.760 74 Proposed lawn * 0.070 98 Proposed trail 6.200 70 Woods, Good, HSG C 9.030 Weighted Average 8.960 99.22% Pervious Area 0.070 0.78% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 24.4 300 0.1500 0.20 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_PR301: BLL_PR301 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=9.030 ac Runoff Volume=3.101 af Runoff Depth=4.12" Flow Length=300' Slope=0.1500 '/' Tc=24.4 min CN=WQ 33.82 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 374HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR302: BLL_PR302 Runoff = 4.42 cfs @ 12.49 hrs, Volume= 0.507 af, Depth= 4.29" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.040 98 Proposed homes and road * 0.320 74 Proposed lawn * 0.060 98 Proposed trail 1.000 70 Woods, Good, HSG C 1.420 Weighted Average 1.320 92.96% Pervious Area 0.100 7.04% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 33.9 300 0.0660 0.15 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" 2.6 270 0.1190 1.72 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 36.5 570 Total Subcatchment BLL_PR302: BLL_PR302 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=1.420 ac Runoff Volume=0.507 af Runoff Depth=4.29" Flow Length=570' Tc=36.5 min CN=WQ 4.42 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 375HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR303: BLL_PR303 Runoff = 0.74 cfs @ 12.63 hrs, Volume= 0.095 af, Depth= 4.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.230 79 CN from Previous Model 0.230 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 41.4 300 0.0400 0.12 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" 4.8 500 0.1190 1.72 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 46.2 800 Total Subcatchment BLL_PR303: BLL_PR303 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.230 ac Runoff Volume=0.095 af Runoff Depth=4.96" Flow Length=800' Tc=46.2 min CN=79 0.74 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 376HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR304: BLL_PR304 Runoff = 12.37 cfs @ 12.30 hrs, Volume= 1.143 af, Depth= 4.81" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.080 98 Existing County Road * 0.400 98 Existing homes * 2.000 74 Existing lawn 0.370 70 Woods, Good, HSG C 2.850 Weighted Average 2.370 83.16% Pervious Area 0.480 16.84% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 23.4 300 0.1660 0.21 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_PR304: BLL_PR304 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=2.850 ac Runoff Volume=1.143 af Runoff Depth=4.81" Flow Length=300' Slope=0.1660 '/' Tc=23.4 min CN=WQ 12.37 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 377HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR401: BLL_PR401 Runoff = 0.51 cfs @ 12.20 hrs, Volume= 0.037 af, Depth= 4.40" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.100 74 Existing lawn 0.100 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR401: BLL_PR401 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.100 ac Runoff Volume=0.037 af Runoff Depth=4.40" Tc=15.0 min CN=74 0.51 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 378HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR402: BLL_PR402 Runoff = 0.57 cfs @ 12.20 hrs, Volume= 0.045 af, Depth= 5.94" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.030 98 Existing road * 0.020 98 Proposed homes and road * 0.040 74 Proposed lawn 0.090 Weighted Average 0.040 44.44% Pervious Area 0.050 55.56% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR402: BLL_PR402 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.090 ac Runoff Volume=0.045 af Runoff Depth=5.94" Tc=15.0 min CN=WQ 0.57 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 379HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR403: BLL_PR403 Runoff = 0.67 cfs @ 12.20 hrs, Volume= 0.052 af, Depth= 5.66" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.040 98 Proposed homes and road * 0.060 74 Proposed lawn * 0.010 98 Proposed sidewalk 0.110 Weighted Average 0.060 54.55% Pervious Area 0.050 45.45% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR403: BLL_PR403 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.110 ac Runoff Volume=0.052 af Runoff Depth=5.66" Tc=15.0 min CN=WQ 0.67 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 380HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR501: BLL_PR501 Runoff = 1.58 cfs @ 12.20 hrs, Volume= 0.114 af, Depth= 4.40" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.310 74 Proposed lawn 0.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR501: BLL_PR501 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.310 ac Runoff Volume=0.114 af Runoff Depth=4.40" Tc=15.0 min CN=74 1.58 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 381HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR502: BLL_PR502 Runoff = 1.74 cfs @ 12.20 hrs, Volume= 0.138 af, Depth= 6.15" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.100 74 Existing lawn * 0.170 98 Existing road and sidewalk 0.270 Weighted Average 0.100 37.04% Pervious Area 0.170 62.96% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR502: BLL_PR502 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.270 ac Runoff Volume=0.138 af Runoff Depth=6.15" Tc=15.0 min CN=WQ 1.74 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 382HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR503: BLL_PR503 Runoff = 0.05 cfs @ 12.20 hrs, Volume= 0.004 af, Depth= 4.40" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.010 74 Proposed lawn 0.010 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR503: BLL_PR503 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.010 ac Runoff Volume=0.004 af Runoff Depth=4.40" Tc=15.0 min CN=74 0.05 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 383HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR504: BLL_PR504 Runoff = 5.59 cfs @ 12.20 hrs, Volume= 0.415 af, Depth= 4.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.160 98 Existing homes * 0.870 74 Existing lawn 1.030 Weighted Average 0.870 84.47% Pervious Area 0.160 15.53% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR504: BLL_PR504 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=1.030 ac Runoff Volume=0.415 af Runoff Depth=4.83" Tc=15.0 min CN=WQ 5.59 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 384HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR505: BLL_PR505 Runoff = 0.20 cfs @ 12.09 hrs, Volume= 0.010 af, Depth= 3.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description 0.030 70 Woods, Good, HSG C 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.4 50 0.1200 0.13 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_PR505: BLL_PR505 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.22 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.030 ac Runoff Volume=0.010 af Runoff Depth=3.96" Flow Length=50' Slope=0.1200 '/' Tc=6.4 min CN=70 0.20 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 385HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR601: BLL_PR601 Runoff = 6.87 cfs @ 12.12 hrs, Volume= 0.400 af, Depth= 4.32" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.080 98 Existing County Road * 0.150 74 Proposed lawn * 0.180 74 wetland 0.700 70 Woods, Good, HSG C 1.110 Weighted Average 1.030 92.79% Pervious Area 0.080 7.21% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.1 180 0.0667 0.33 Sheet Flow, Range n= 0.130 P2= 2.87" Subcatchment BLL_PR601: BLL_PR601 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=1.110 ac Runoff Volume=0.400 af Runoff Depth=4.32" Flow Length=180' Slope=0.0667 '/' Tc=9.1 min CN=WQ 6.87 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 386HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BL_PR207: BLL_PR207 Runoff = 0.77 cfs @ 12.20 hrs, Volume= 0.059 af, Depth= 5.47" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.050 98 Proposed homes and road * 0.080 74 Proposed lawn 0.130 Weighted Average 0.080 61.54% Pervious Area 0.050 38.46% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BL_PR207: BLL_PR207 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.130 ac Runoff Volume=0.059 af Runoff Depth=5.47" Tc=15.0 min CN=WQ 0.77 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 387HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 10-1: LU 10-1 Runoff = 60.73 cfs @ 12.09 hrs, Volume= 2.998 af, Depth= 4.85" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 7.420 78 7.420 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 10-1: LU 10-1 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=7.420 ac Runoff Volume=2.998 af Runoff Depth=4.85" Tc=6.0 min CN=78 60.73 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 388HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-1: LU 2-1 Runoff = 223.31 cfs @ 12.71 hrs, Volume= 30.682 af, Depth= 4.62" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 79.621 76 79.621 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 52.0 Direct Entry, Subcatchment LU 2-1: LU 2-1 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)250 240 230 220 210 200 190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=79.621 ac Runoff Volume=30.682 af Runoff Depth=4.62" Tc=52.0 min CN=76 223.31 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 389HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-10: LU 2-10 Runoff = 72.06 cfs @ 12.09 hrs, Volume= 3.533 af, Depth= 4.29" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 9.880 73 9.880 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 2-10: LU 2-10 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=9.880 ac Runoff Volume=3.533 af Runoff Depth=4.29" Tc=6.0 min CN=73 72.06 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 390HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-11: LU 2-11 Runoff = 127.44 cfs @ 12.16 hrs, Volume= 8.262 af, Depth= 4.51" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 21.970 75 21.970 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment LU 2-11: LU 2-11 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=21.970 ac Runoff Volume=8.262 af Runoff Depth=4.51" Tc=12.0 min CN=75 127.44 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 391HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-12: LU 2-12 Runoff = 69.09 cfs @ 12.09 hrs, Volume= 3.386 af, Depth= 4.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 9.720 72 9.720 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 2-12: LU 2-12 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=9.720 ac Runoff Volume=3.386 af Runoff Depth=4.18" Tc=6.0 min CN=72 69.09 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 392HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-13: LU 2-13 Runoff = 103.72 cfs @ 12.10 hrs, Volume= 5.362 af, Depth= 4.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 15.390 72 15.390 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-13: LU 2-13 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)115 110 105 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=15.390 ac Runoff Volume=5.362 af Runoff Depth=4.18" Tc=7.0 min CN=72 103.72 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 393HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-14: LU 2-14 Runoff = 135.63 cfs @ 12.16 hrs, Volume= 8.793 af, Depth= 4.07" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 25.920 71 25.920 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment LU 2-14: LU 2-14 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=25.920 ac Runoff Volume=8.793 af Runoff Depth=4.07" Tc=12.0 min CN=71 135.63 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 394HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-15: LU 2-15 Runoff = 34.06 cfs @ 12.07 hrs, Volume= 1.502 af, Depth= 4.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 4.310 72 4.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Subcatchment LU 2-15: LU 2-15 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=4.310 ac Runoff Volume=1.502 af Runoff Depth=4.18" Tc=4.0 min CN=72 34.06 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 395HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-16: LU 2-16 Runoff = 21.26 cfs @ 12.07 hrs, Volume= 0.939 af, Depth= 4.40" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 2.560 74 2.560 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Subcatchment LU 2-16: LU 2-16 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=2.560 ac Runoff Volume=0.939 af Runoff Depth=4.40" Tc=4.0 min CN=74 21.26 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 396HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-18: LU 2-18 Runoff = 62.21 cfs @ 12.10 hrs, Volume= 3.228 af, Depth= 4.74" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 8.180 77 8.180 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-18: LU 2-18 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=8.180 ac Runoff Volume=3.228 af Runoff Depth=4.74" Tc=7.0 min CN=77 62.21 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 397HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-2: LU 2-2 Runoff = 84.46 cfs @ 12.10 hrs, Volume= 4.369 af, Depth= 4.40" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 11.910 74 11.910 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-2: LU 2-2 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=11.910 ac Runoff Volume=4.369 af Runoff Depth=4.40" Tc=7.0 min CN=74 84.46 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 398HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-3: LU 2-3 Runoff = 222.49 cfs @ 12.22 hrs, Volume= 16.996 af, Depth= 4.29" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 47.530 73 47.530 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 17.0 Direct Entry, Subcatchment LU 2-3: LU 2-3 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)240 230 220 210 200 190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=47.530 ac Runoff Volume=16.996 af Runoff Depth=4.29" Tc=17.0 min CN=73 222.49 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 399HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-4: LU 2-4 Runoff = 92.56 cfs @ 12.11 hrs, Volume= 5.085 af, Depth= 4.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 12.300 79 12.300 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment LU 2-4: LU 2-4 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=12.300 ac Runoff Volume=5.085 af Runoff Depth=4.96" Tc=8.0 min CN=79 92.56 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 400HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-5: LU 2-5 Runoff = 71.12 cfs @ 12.10 hrs, Volume= 3.697 af, Depth= 4.85" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 9.150 78 9.150 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-5: LU 2-5 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=9.150 ac Runoff Volume=3.697 af Runoff Depth=4.85" Tc=7.0 min CN=78 71.12 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 401HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-7: LU 2-7 Runoff = 67.72 cfs @ 12.10 hrs, Volume= 3.514 af, Depth= 4.74" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 8.904 77 8.904 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-7: LU 2-7 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=8.904 ac Runoff Volume=3.514 af Runoff Depth=4.74" Tc=7.0 min CN=77 67.72 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 402HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-8: LU 2-8 Runoff = 44.80 cfs @ 12.07 hrs, Volume= 2.085 af, Depth= 4.29" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 5.830 73 5.830 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment LU 2-8: LU 2-8 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)50 48 46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=5.830 ac Runoff Volume=2.085 af Runoff Depth=4.29" Tc=5.0 min CN=73 44.80 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 403HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-9: LU 2-9 Runoff = 73.55 cfs @ 12.10 hrs, Volume= 3.803 af, Depth= 4.07" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 11.210 71 11.210 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-9: LU 2-9 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=11.210 ac Runoff Volume=3.803 af Runoff Depth=4.07" Tc=7.0 min CN=71 73.55 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 404HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W11S: W11 Runoff = 28.88 cfs @ 12.19 hrs, Volume= 2.011 af, Depth= 4.42" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 2.746 74 Wetland, HSG C * 0.481 70 Woods Good, HSG C * 1.503 71 Meadow, HSG C * 0.452 74 75% Grass cover Good, HSG C * 0.284 98 Impervious, HSG C 5.464 Weighted Average 5.181 94.81% Pervious Area 0.284 5.19% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.8 650 0.0380 0.79 Lag/CN Method, Subcatchment W11S: W11 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=5.464 ac Runoff Volume=2.011 af Runoff Depth=4.42" Flow Length=650' Slope=0.0380 '/' Tc=13.8 min CN=WQ 28.88 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 405HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W12S: W12 Runoff = 6.50 cfs @ 12.05 hrs, Volume= 0.269 af, Depth= 4.41" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.081 74 Wetland, HSG C * 0.290 70 Woods Good, HSG C * 0.316 74 75% Grass cover Good, HSG C * 0.047 98 Impervious, HSG C 0.734 Weighted Average 0.687 93.58% Pervious Area 0.047 6.42% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.1 130 0.1200 1.01 Lag/CN Method, Subcatchment W12S: W12 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.734 ac Runoff Volume=0.269 af Runoff Depth=4.41" Flow Length=130' Slope=0.1200 '/' Tc=2.1 min CN=WQ 6.50 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 406HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W13S: W13 Runoff = 11.05 cfs @ 12.13 hrs, Volume= 0.651 af, Depth= 4.52" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.038 74 Wetland, HSG C * 0.252 70 Woods Good, HSG C * 1.325 74 75% Grass cover Good, HSG C * 0.114 98 Impervious, HSG C 1.729 Weighted Average 1.615 93.39% Pervious Area 0.114 6.61% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 715 0.0900 1.27 Lag/CN Method, Subcatchment W13S: W13 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=1.729 ac Runoff Volume=0.651 af Runoff Depth=4.52" Flow Length=715' Slope=0.0900 '/' Tc=9.4 min CN=WQ 11.05 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 407HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W14S: W14 Runoff = 16.19 cfs @ 12.12 hrs, Volume= 0.954 af, Depth= 4.67" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.084 74 Wetland, HSG C * 0.638 70 Woods Good, HSG C * 0.014 71 Meadow, HSG C * 1.375 74 75% Grass cover Good, HSG C * 0.341 98 Impervious, HSG C 2.452 Weighted Average 2.112 86.11% Pervious Area 0.341 13.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.1 715 0.0900 1.30 Lag/CN Method, Subcatchment W14S: W14 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=2.452 ac Runoff Volume=0.954 af Runoff Depth=4.67" Flow Length=715' Slope=0.0900 '/' Tc=9.1 min CN=WQ 16.19 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 408HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W6S: W6 Runoff = 4.73 cfs @ 12.06 hrs, Volume= 0.209 af, Depth= 4.37" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.061 74 Wetland, HSG C * 0.392 71 Meadow, HSG C * 0.080 74 75% Grass cover Good, HSG C * 0.041 98 Impervious, HSG C 0.575 Weighted Average 0.534 92.88% Pervious Area 0.041 7.12% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.7 200 0.0800 0.90 Lag/CN Method, Subcatchment W6S: W6 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.575 ac Runoff Volume=0.209 af Runoff Depth=4.37" Flow Length=200' Slope=0.0800 '/' Tc=3.7 min CN=WQ 4.73 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 409HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Reach Pipe from W2 to W1: Pipe from Wetland 2 to Wetland 1 [52] Hint: Inlet/Outlet conditions not evaluated Inflow = 20.24 cfs @ 12.82 hrs, Volume= 42.026 af Outflow = 20.24 cfs @ 12.83 hrs, Volume= 42.026 af, Atten= 0%, Lag= 0.8 min Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Max. Velocity= 3.95 fps, Min. Travel Time= 0.9 min Avg. Velocity = 1.44 fps, Avg. Travel Time= 2.5 min Peak Storage= 1,086 cf @ 12.83 hrs Average Depth at Peak Storage= 2.04' Bank-Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 25.09 cfs 36.0" Round Pipe n= 0.013 Concrete pipe, bends & connections Length= 212.0' Slope= 0.0014 '/' Inlet Invert= 964.30', Outlet Invert= 964.00' Reach Pipe from W2 to W1: Pipe from Wetland 2 to Wetland 1 Inflow Outflow Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Avg. Flow Depth=2.04' Max Vel=3.95 fps 36.0" Round Pipe n=0.013 L=212.0' S=0.0014 '/' Capacity=25.09 cfs 20.24 cfs 20.24 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 410HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 300P: Pond with IESF Inflow Area = 73.792 ac, 31.33% Impervious, Inflow Depth = 3.70" for 100y 24hr event Inflow = 239.81 cfs @ 12.26 hrs, Volume= 22.722 af Outflow = 104.08 cfs @ 12.66 hrs, Volume= 22.722 af, Atten= 57%, Lag= 23.9 min Primary = 66.79 cfs @ 12.66 hrs, Volume= 18.289 af Secondary = 37.29 cfs @ 12.66 hrs, Volume= 4.433 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 965.00' Surf.Area= 59,664 sf Storage= 254,284 cf Peak Elev= 970.12' @ 12.66 hrs Surf.Area= 108,608 sf Storage= 738,528 cf (484,244 cf above start) Plug-Flow detention time= 871.4 min calculated for 16.884 af (74% of inflow) Center-of-Mass det. time= 596.1 min ( 1,374.0 - 777.9 ) Volume Invert Avail.Storage Storage Description #1 955.00' 779,932 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 955.00 7,650 0 0 956.00 11,005 9,328 9,328 958.00 16,690 27,695 37,023 960.00 23,225 39,915 76,938 962.00 31,363 54,588 131,526 963.00 36,141 33,752 165,278 964.00 41,104 38,623 203,900 965.00 59,664 50,384 254,284 965.01 63,414 615 254,899 965.02 80,995 722 255,621 965.95 85,712 77,519 333,140 970.50 110,680 446,792 779,932 Device Routing Invert Outlet Devices #1 Primary 960.22'42.0" Round RCP_Round 42" L= 43.0' Ke= 0.500 Inlet / Outlet Invert= 960.22' / 960.00' S= 0.0051 '/' Cc= 0.900 n= 0.013, Flow Area= 9.62 sf #2 Device 1 965.95'Custom Weir, Cv= 2.62 (C= 3.28) Head (feet) 0.00 2.35 2.35 5.00 Width (feet) 0.50 0.50 7.00 7.00 #3 Device 2 960.00'42.0" Round RCP_Round 42" L= 10.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 960.00' / 960.00' S= 0.0000 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 9.62 sf #4 Device 1 963.00'6.0" Vert. 2 - 6" Draintile Outlet X 2.00 C= 0.600 #5 Device 4 965.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 965.00' - 965.01' Excluded Surface area = 59,664 sf #6 Secondary 960.22'36.0" Round RCP_Round 36" L= 43.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 960.22' / 960.00' S= 0.0051 '/' Cc= 0.900 Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 411HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf #7 Device 6 968.30'5.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Primary OutFlow Max=66.79 cfs @ 12.66 hrs HW=970.12' TW=958.36' (Dynamic Tailwater) 1=RCP_Round 42" (Passes 66.79 cfs of 132.27 cfs potential flow) 2=Custom Weir (Weir Controls 66.33 cfs @ 4.76 fps) 3=RCP_Round 42" (Passes 66.33 cfs of 129.04 cfs potential flow) 4=2 - 6" Draintile Outlet (Passes 0.46 cfs of 4.96 cfs potential flow) 5=Iron Enhanced Filtration (Exfiltration Controls 0.46 cfs) Secondary OutFlow Max=37.29 cfs @ 12.66 hrs HW=970.12' TW=958.36' (Dynamic Tailwater) 6=RCP_Round 36" (Passes 37.29 cfs of 98.66 cfs potential flow) 7=Sharp-Crested Rectangular Weir (Weir Controls 37.29 cfs @ 4.41 fps) Pond 300P: Pond with IESF Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)260 240 220 200 180 160 140 120 100 80 60 40 20 0 Inflow Area=73.792 ac Peak Elev=970.12' Storage=738,528 cf 239.81 cfs 104.08 cfs 66.79 cfs 37.29 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 412HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 400P: County pond with IESF Inflow Area = 4.800 ac, 45.05% Impervious, Inflow Depth = 5.56" for 100y 24hr event Inflow = 26.67 cfs @ 12.14 hrs, Volume= 2.226 af Outflow = 8.11 cfs @ 12.66 hrs, Volume= 2.226 af, Atten= 70%, Lag= 31.4 min Primary = 8.11 cfs @ 12.66 hrs, Volume= 2.226 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 984.00' Surf.Area= 10,824 sf Storage= 37,248 cf Peak Elev= 986.31' @ 12.66 hrs Surf.Area= 20,929 sf Storage= 78,514 cf (41,266 cf above start) Plug-Flow detention time= 437.9 min calculated for 1.371 af (62% of inflow) Center-of-Mass det. time= 221.6 min ( 986.7 - 765.1 ) Volume Invert Avail.Storage Storage Description #1 974.00' 185,067 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 974.00 485 0 0 975.00 868 677 677 976.00 1,334 1,101 1,778 978.00 2,522 3,856 5,634 980.00 4,030 6,552 12,186 982.00 5,839 9,869 22,055 983.00 6,862 6,351 28,405 984.00 10,824 8,843 37,248 984.01 11,174 110 37,358 984.02 15,262 132 37,490 984.45 16,243 6,774 44,264 985.00 17,254 9,212 53,475 986.00 20,050 18,652 72,127 987.00 22,870 21,460 93,587 991.00 22,870 91,480 185,067 Device Routing Invert Outlet Devices #1 Primary 982.00'15.0" Round RCP_Round 15" L= 29.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 982.00' / 982.00' S= 0.0000 '/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #2 Device 1 984.45'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 3.0' Crest Height #3 Device 2 982.00'15.0" Round RCP_Round 15" L= 22.0' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 981.75' / 982.00' S= -0.0114 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #4 Device 1 982.00'6.0" Vert. Draintile Outlet C= 0.600 #5 Device 4 984.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 984.00' - 984.01' Excluded Surface area = 10,824 sf Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 413HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Primary OutFlow Max=8.11 cfs @ 12.66 hrs HW=986.31' TW=980.27' (Dynamic Tailwater) 1=RCP_Round 15" (Passes 8.11 cfs of 12.58 cfs potential flow) 2=Sharp-Crested Rectangular Weir (Passes 8.06 cfs of 32.42 cfs potential flow) 3=RCP_Round 15" (Inlet Controls 8.06 cfs @ 6.57 fps) 4=Draintile Outlet (Passes 0.04 cfs of 1.91 cfs potential flow) 5=Iron Enhanced Filtration (Exfiltration Controls 0.04 cfs) Pond 400P: County pond with IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=4.800 ac Peak Elev=986.31' Storage=78,514 cf 26.67 cfs 8.11 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 414HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 490: CB inlet [57] Hint: Peaked at 985.82' (Flood elevation advised) Inflow Area = 5.397 ac, 16.24% Impervious, Inflow Depth = 4.42" for 100y 24hr event Inflow = 22.94 cfs @ 12.22 hrs, Volume= 1.988 af Outflow = 22.94 cfs @ 12.23 hrs, Volume= 1.988 af, Atten= 0%, Lag= 0.1 min Primary = 10.32 cfs @ 12.23 hrs, Volume= 1.596 af Secondary = 12.62 cfs @ 12.23 hrs, Volume= 0.392 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 985.82' @ 12.23 hrs Device Routing Invert Outlet Devices #1 Primary 984.63'19.0" Horiz. Orifice/Grate C= 0.600 in 22.0" Grate (75% open area) Limited to weir flow at low heads #2 Secondary 985.10'8.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=10.32 cfs @ 12.23 hrs HW=985.82' TW=968.61' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 10.32 cfs @ 5.24 fps) Secondary OutFlow Max=12.62 cfs @ 12.23 hrs HW=985.82' TW=982.81' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir (Weir Controls 12.62 cfs @ 2.20 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 415HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 490: CB inlet Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=5.397 ac Peak Elev=985.82' 22.94 cfs 22.94 cfs 10.32 cfs 12.62 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 416HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 491P: CB inlet [57] Hint: Peaked at 982.81' (Flood elevation advised) Inflow = 12.62 cfs @ 12.23 hrs, Volume= 0.392 af Outflow = 12.62 cfs @ 12.23 hrs, Volume= 0.392 af, Atten= 0%, Lag= 0.1 min Primary = 12.62 cfs @ 12.23 hrs, Volume= 0.392 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 982.81' @ 12.23 hrs Device Routing Invert Outlet Devices #1 Primary 981.04'19.0" Horiz. Orifice/Grate C= 0.600 in 22.0" Grate (75% open area) Limited to weir flow at low heads Primary OutFlow Max=12.62 cfs @ 12.23 hrs HW=982.81' TW=968.63' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 12.62 cfs @ 6.41 fps) Pond 491P: CB inlet Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Peak Elev=982.81' 12.62 cfs 12.62 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 417HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 500P: IESF Inflow Area = 1.766 ac, 29.44% Impervious, Inflow Depth = 5.20" for 100y 24hr event Inflow = 12.73 cfs @ 12.12 hrs, Volume= 0.765 af Outflow = 12.68 cfs @ 12.13 hrs, Volume= 0.765 af, Atten= 0%, Lag= 0.7 min Primary = 12.68 cfs @ 12.13 hrs, Volume= 0.765 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 985.50' @ 12.13 hrs Surf.Area= 2,961 sf Storage= 3,363 cf Plug-Flow detention time= 149.0 min calculated for 0.765 af (100% of inflow) Center-of-Mass det. time= 149.0 min ( 915.5 - 766.5 ) Volume Invert Avail.Storage Storage Description #1 984.00' 6,740 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 984.00 0 0 0 984.01 200 1 1 984.02 1,600 9 10 985.00 2,468 1,993 2,003 985.50 2,960 1,357 3,360 986.00 3,520 1,620 4,980 986.50 3,520 1,760 6,740 Device Routing Invert Outlet Devices #1 Primary 982.00'6.0" Vert. Draintile Outlet C= 0.600 #2 Device 1 984.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 984.00' - 984.01' Excluded Surface area = 0 sf #3 Primary 985.30'60.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=12.67 cfs @ 12.13 hrs HW=985.50' TW=979.31' (Dynamic Tailwater) 1=Draintile Outlet (Passes 0.02 cfs of 1.70 cfs potential flow) 2=Iron Enhanced Filtration (Exfiltration Controls 0.02 cfs) 3=Broad-Crested Rectangular Weir (Weir Controls 12.65 cfs @ 1.05 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 418HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 500P: IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=1.766 ac Peak Elev=985.50' Storage=3,363 cf 12.73 cfs 12.68 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 419HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 600P: rain garden Inflow Area = 2.197 ac, 13.03% Impervious, Inflow Depth = 2.99" for 100y 24hr event Inflow = 5.88 cfs @ 12.31 hrs, Volume= 0.547 af Outflow = 5.72 cfs @ 12.34 hrs, Volume= 0.582 af, Atten= 3%, Lag= 1.8 min Discarded = 0.01 cfs @ 11.89 hrs, Volume= 0.076 af Primary = 5.72 cfs @ 12.34 hrs, Volume= 0.506 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 999.88' @ 12.34 hrs Surf.Area= 2,045 sf Storage= 1,987 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 620.8 min ( 1,434.8 - 814.0 ) Volume Invert Avail.Storage Storage Description #1 998.70' 6,330 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 998.70 1,000 0 0 999.50 2,045 1,218 1,218 1,000.00 2,045 1,023 2,240 1,002.00 2,045 4,090 6,330 Device Routing Invert Outlet Devices #1 Primary 999.50'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 998.70'0.200 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 11.89 hrs HW=999.50' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=5.72 cfs @ 12.34 hrs HW=999.88' TW=958.03' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 5.72 cfs @ 1.52 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 420HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 600P: rain garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)6 5 4 3 2 1 0 Inflow Area=2.197 ac Peak Elev=999.88' Storage=1,987 cf 5.88 cfs 5.72 cfs 0.01 cfs 5.72 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 421HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 800P: rain garden Inflow Area = 1.094 ac, 15.23% Impervious, Inflow Depth = 4.68" for 100y 24hr event Inflow = 7.70 cfs @ 12.11 hrs, Volume= 0.426 af Outflow = 7.39 cfs @ 12.13 hrs, Volume= 0.426 af, Atten= 4%, Lag= 1.3 min Discarded = 0.01 cfs @ 12.13 hrs, Volume= 0.036 af Primary = 7.38 cfs @ 12.13 hrs, Volume= 0.390 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,001.94' @ 12.13 hrs Surf.Area= 2,127 sf Storage= 1,885 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 126.7 min ( 900.5 - 773.8 ) Volume Invert Avail.Storage Storage Description #1 1,000.70' 2,017 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,000.70 850 0 0 1,001.00 1,350 330 330 1,001.50 1,600 738 1,067 1,002.00 2,200 950 2,017 Device Routing Invert Outlet Devices #1 Primary 1,001.50'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 1,000.70'0.200 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.13 hrs HW=1,001.94' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=7.38 cfs @ 12.13 hrs HW=1,001.94' TW=1,000.73' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 7.38 cfs @ 1.68 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 422HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 800P: rain garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=1.094 ac Peak Elev=1,001.94' Storage=1,885 cf 7.70 cfs 7.39 cfs 0.01 cfs 7.38 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 423HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 900P: IESF Inflow Area = 1.215 ac, 34.66% Impervious, Inflow Depth = 5.36" for 100y 24hr event Inflow = 8.79 cfs @ 12.13 hrs, Volume= 0.543 af Outflow = 8.31 cfs @ 12.16 hrs, Volume= 0.543 af, Atten= 5%, Lag= 1.8 min Primary = 8.31 cfs @ 12.16 hrs, Volume= 0.543 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 992.47' @ 12.16 hrs Surf.Area= 3,093 sf Storage= 3,442 cf Plug-Flow detention time= 206.6 min calculated for 0.543 af (100% of inflow) Center-of-Mass det. time= 206.6 min ( 970.9 - 764.2 ) Volume Invert Avail.Storage Storage Description #1 991.00' 3,533 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.00 0 0 0 991.01 100 0 0 991.02 1,650 9 9 991.50 2,131 907 917 992.00 2,605 1,184 2,101 992.50 3,124 1,432 3,533 Device Routing Invert Outlet Devices #1 Primary 989.00'6.0" Vert. Draintile Outlet C= 0.600 #2 Device 1 991.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 991.00' - 991.01' Excluded Surface area = 0 sf #3 Primary 992.00'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=8.31 cfs @ 12.16 hrs HW=992.47' TW=987.96' (Dynamic Tailwater) 1=Draintile Outlet (Passes 0.01 cfs of 1.70 cfs potential flow) 2=Iron Enhanced Filtration (Exfiltration Controls 0.01 cfs) 3=Broad-Crested Rectangular Weir (Weir Controls 8.30 cfs @ 1.76 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 424HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 900P: IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)9 8 7 6 5 4 3 2 1 0 Inflow Area=1.215 ac Peak Elev=992.47' Storage=3,442 cf 8.79 cfs 8.31 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 425HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB11: Bluffs at Lake Lucy CB 11 Inflow Area = 0.920 ac, 18.48% Impervious, Inflow Depth = 4.90" for 100y 24hr event Inflow = 5.04 cfs @ 12.20 hrs, Volume= 0.376 af Outflow = 5.03 cfs @ 12.21 hrs, Volume= 0.376 af, Atten= 0%, Lag= 0.4 min Primary = 5.03 cfs @ 12.21 hrs, Volume= 0.376 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 997.75' @ 12.21 hrs Surf.Area= 858 sf Storage= 111 cf Plug-Flow detention time= 1.5 min calculated for 0.376 af (100% of inflow) Center-of-Mass det. time= 1.4 min ( 779.1 - 777.7 ) Volume Invert Avail.Storage Storage Description #1 997.50' 56,626,370 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 997.50 40 0 0 998.00 1,700 435 435 1,000.50 3,500 6,500 6,935 10,002.00 9,080 56,619,435 56,626,370 Device Routing Invert Outlet Devices #1 Primary 997.50'48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 998.00'20.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=5.03 cfs @ 12.21 hrs HW=997.75' TW=966.21' (Dynamic Tailwater) 1=Grate (Weir Controls 5.03 cfs @ 1.62 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=997.50' TW=964.00' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 426HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB11: Bluffs at Lake Lucy CB 11 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 Inflow Area=0.920 ac Peak Elev=997.75' Storage=111 cf 5.04 cfs 5.03 cfs 5.03 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 427HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB13A: Bluffs at Lake Lucy CB 13A Inflow Area = 0.130 ac, 38.46% Impervious, Inflow Depth = 5.47" for 100y 24hr event Inflow = 0.77 cfs @ 12.20 hrs, Volume= 0.059 af Outflow = 0.77 cfs @ 12.20 hrs, Volume= 0.059 af, Atten= 0%, Lag= 0.1 min Primary = 0.77 cfs @ 12.20 hrs, Volume= 0.059 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,014.10' @ 12.20 hrs Surf.Area= 46 sf Storage= 3 cf Plug-Flow detention time= 0.1 min calculated for 0.059 af (100% of inflow) Center-of-Mass det. time= 0.1 min ( 767.8 - 767.7 ) Volume Invert Avail.Storage Storage Description #1 1,014.00' 625 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,014.00 15 0 0 1,016.00 610 625 625 Device Routing Invert Outlet Devices #1 Primary 1,014.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 1,015.50'20.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.77 cfs @ 12.20 hrs HW=1,014.10' TW=966.18' (Dynamic Tailwater) 1=Grate (Weir Controls 0.77 cfs @ 1.05 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,014.00' TW=964.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 428HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB13A: Bluffs at Lake Lucy CB 13A Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=0.130 ac Peak Elev=1,014.10' Storage=3 cf 0.77 cfs 0.77 cfs 0.77 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 429HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB22: Bluffs at Lake Lucy CB 22 Inflow Area = 0.160 ac, 25.00% Impervious, Inflow Depth = 5.09" for 100y 24hr event Inflow = 0.90 cfs @ 12.20 hrs, Volume= 0.068 af Outflow = 0.90 cfs @ 12.20 hrs, Volume= 0.068 af, Atten= 0%, Lag= 0.1 min Primary = 0.90 cfs @ 12.20 hrs, Volume= 0.068 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 978.61' @ 12.20 hrs Surf.Area= 64 sf Storage= 6 cf Plug-Flow detention time= 0.2 min calculated for 0.068 af (100% of inflow) Center-of-Mass det. time= 0.2 min ( 774.3 - 774.1 ) Volume Invert Avail.Storage Storage Description #1 978.50' 145 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 978.50 40 0 0 979.50 250 145 145 Device Routing Invert Outlet Devices #1 Primary 978.50'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 979.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.90 cfs @ 12.20 hrs HW=978.61' TW=975.58' (Dynamic Tailwater) 1=Grate (Weir Controls 0.90 cfs @ 1.11 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=978.50' TW=957.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 430HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB22: Bluffs at Lake Lucy CB 22 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=0.160 ac Peak Elev=978.61' Storage=6 cf 0.90 cfs 0.90 cfs 0.90 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 431HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB23: Bluffs at Lake Lucy CB 23 Inflow Area = 0.160 ac, 18.75% Impervious, Inflow Depth = 4.92" for 100y 24hr event Inflow = 0.88 cfs @ 12.20 hrs, Volume= 0.066 af Outflow = 0.88 cfs @ 12.20 hrs, Volume= 0.066 af, Atten= 0%, Lag= 0.1 min Primary = 0.88 cfs @ 12.20 hrs, Volume= 0.066 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 978.61' @ 12.20 hrs Surf.Area= 50 sf Storage= 5 cf Plug-Flow detention time= 0.2 min calculated for 0.066 af (100% of inflow) Center-of-Mass det. time= 0.2 min ( 777.6 - 777.5 ) Volume Invert Avail.Storage Storage Description #1 978.50' 363 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 978.50 40 0 0 981.00 250 363 363 Device Routing Invert Outlet Devices #1 Primary 978.50'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 980.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.88 cfs @ 12.20 hrs HW=978.61' TW=975.58' (Dynamic Tailwater) 1=Grate (Weir Controls 0.88 cfs @ 1.10 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=978.50' TW=978.50' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 432HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB23: Bluffs at Lake Lucy CB 23 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.95 0.9 0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=0.160 ac Peak Elev=978.61' Storage=5 cf 0.88 cfs 0.88 cfs 0.88 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 433HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB24: Bluffs at Lake Lucy CB 24 Inflow Area = 0.150 ac, 20.00% Impervious, Inflow Depth = 4.93" for 100y 24hr event Inflow = 0.82 cfs @ 12.20 hrs, Volume= 0.062 af Outflow = 0.82 cfs @ 12.20 hrs, Volume= 0.062 af, Atten= 0%, Lag= 0.1 min Primary = 0.82 cfs @ 12.20 hrs, Volume= 0.062 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 979.11' @ 12.20 hrs Surf.Area= 45 sf Storage= 5 cf Plug-Flow detention time= 0.2 min calculated for 0.062 af (100% of inflow) Center-of-Mass det. time= 0.2 min ( 777.1 - 777.0 ) Volume Invert Avail.Storage Storage Description #1 979.00' 180 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 979.00 40 0 0 981.00 140 180 180 Device Routing Invert Outlet Devices #1 Primary 979.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 980.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.82 cfs @ 12.20 hrs HW=979.11' TW=975.58' (Dynamic Tailwater) 1=Grate (Weir Controls 0.82 cfs @ 1.08 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=979.00' TW=978.50' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 434HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB24: Bluffs at Lake Lucy CB 24 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.9 0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=0.150 ac Peak Elev=979.11' Storage=5 cf 0.82 cfs 0.82 cfs 0.82 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 435HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB25: Bluffs at Lake Lucy CB 25 Inflow Area = 0.080 ac, 37.50% Impervious, Inflow Depth = 5.44" for 100y 24hr event Inflow = 0.47 cfs @ 12.20 hrs, Volume= 0.036 af Outflow = 0.47 cfs @ 12.20 hrs, Volume= 0.036 af, Atten= 0%, Lag= 0.1 min Primary = 0.47 cfs @ 12.20 hrs, Volume= 0.036 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 981.07' @ 12.20 hrs Surf.Area= 47 sf Storage= 3 cf Plug-Flow detention time= 0.2 min calculated for 0.036 af (100% of inflow) Center-of-Mass det. time= 0.2 min ( 768.4 - 768.1 ) Volume Invert Avail.Storage Storage Description #1 981.00' 90 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 981.00 40 0 0 982.00 140 90 90 Device Routing Invert Outlet Devices #1 Primary 981.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 981.80'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.47 cfs @ 12.20 hrs HW=981.07' TW=975.57' (Dynamic Tailwater) 1=Grate (Weir Controls 0.47 cfs @ 0.89 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=981.00' TW=979.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 436HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB25: Bluffs at Lake Lucy CB 25 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=0.080 ac Peak Elev=981.07' Storage=3 cf 0.47 cfs 0.47 cfs 0.47 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 437HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB26: Bluffs at Lake Lucy CB 26 Inflow Area = 0.260 ac, 23.08% Impervious, Inflow Depth = 5.04" for 100y 24hr event Inflow = 1.45 cfs @ 12.20 hrs, Volume= 0.109 af Outflow = 1.45 cfs @ 12.20 hrs, Volume= 0.109 af, Atten= 0%, Lag= 0.2 min Primary = 1.45 cfs @ 12.20 hrs, Volume= 0.109 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 983.16' @ 12.20 hrs Surf.Area= 160 sf Storage= 16 cf Plug-Flow detention time= 0.2 min calculated for 0.109 af (100% of inflow) Center-of-Mass det. time= 0.2 min ( 775.4 - 775.1 ) Volume Invert Avail.Storage Storage Description #1 983.00' 594 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 983.00 40 0 0 984.20 950 594 594 Device Routing Invert Outlet Devices #1 Primary 983.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 984.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=1.45 cfs @ 12.20 hrs HW=983.16' TW=975.58' (Dynamic Tailwater) 1=Grate (Weir Controls 1.45 cfs @ 1.30 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=983.00' TW=981.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 438HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB26: Bluffs at Lake Lucy CB 26 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=0.260 ac Peak Elev=983.16' Storage=16 cf 1.45 cfs 1.45 cfs 1.45 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 439HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB27: Bluffs at Lake Lucy CB 27 Inflow Area = 0.360 ac, 16.67% Impervious, Inflow Depth = 4.86" for 100y 24hr event Inflow = 1.96 cfs @ 12.20 hrs, Volume= 0.146 af Outflow = 1.96 cfs @ 12.20 hrs, Volume= 0.146 af, Atten= 0%, Lag= 0.1 min Primary = 1.96 cfs @ 12.20 hrs, Volume= 0.146 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 986.19' @ 12.20 hrs Surf.Area= 59 sf Storage= 10 cf Plug-Flow detention time= 0.1 min calculated for 0.146 af (100% of inflow) Center-of-Mass det. time= 0.1 min ( 778.8 - 778.6 ) Volume Invert Avail.Storage Storage Description #1 986.00' 90 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 986.00 40 0 0 987.00 140 90 90 Device Routing Invert Outlet Devices #1 Primary 986.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 987.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=1.96 cfs @ 12.20 hrs HW=986.19' TW=975.58' (Dynamic Tailwater) 1=Grate (Weir Controls 1.96 cfs @ 1.44 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=986.00' TW=983.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 440HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB27: Bluffs at Lake Lucy CB 27 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Inflow Area=0.360 ac Peak Elev=986.19' Storage=10 cf 1.96 cfs 1.96 cfs 1.96 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 441HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB28: Bluffs at Lake Lucy CB 28 Inflow Area = 0.280 ac, 17.86% Impervious, Inflow Depth = 4.90" for 100y 24hr event Inflow = 1.53 cfs @ 12.20 hrs, Volume= 0.114 af Outflow = 1.53 cfs @ 12.20 hrs, Volume= 0.114 af, Atten= 0%, Lag= 0.2 min Primary = 1.53 cfs @ 12.20 hrs, Volume= 0.114 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 995.16' @ 12.20 hrs Surf.Area= 164 sf Storage= 17 cf Plug-Flow detention time= 0.2 min calculated for 0.114 af (100% of inflow) Center-of-Mass det. time= 0.2 min ( 778.2 - 777.9 ) Volume Invert Avail.Storage Storage Description #1 995.00' 594 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 995.00 40 0 0 996.20 950 594 594 Device Routing Invert Outlet Devices #1 Primary 995.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 996.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=1.53 cfs @ 12.20 hrs HW=995.16' TW=975.58' (Dynamic Tailwater) 1=Grate (Weir Controls 1.53 cfs @ 1.32 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=995.00' TW=986.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 442HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB28: Bluffs at Lake Lucy CB 28 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=0.280 ac Peak Elev=995.16' Storage=17 cf 1.53 cfs 1.53 cfs 1.53 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 443HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB30: Bluffs at Lake Lucy CB 30 Inflow Area = 0.250 ac, 16.00% Impervious, Inflow Depth = 4.83" for 100y 24hr event Inflow = 1.35 cfs @ 12.20 hrs, Volume= 0.101 af Outflow = 1.35 cfs @ 12.20 hrs, Volume= 0.101 af, Atten= 0%, Lag= 0.1 min Primary = 1.35 cfs @ 12.20 hrs, Volume= 0.101 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,000.15' @ 12.20 hrs Surf.Area= 127 sf Storage= 13 cf Plug-Flow detention time= 0.2 min calculated for 0.101 af (100% of inflow) Center-of-Mass det. time= 0.2 min ( 779.3 - 779.1 ) Volume Invert Avail.Storage Storage Description #1 1,000.00' 1,240 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,000.00 40 0 0 1,002.00 1,200 1,240 1,240 Device Routing Invert Outlet Devices #1 Primary 1,000.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 1,001.00'20.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=1.35 cfs @ 12.20 hrs HW=1,000.15' TW=975.58' (Dynamic Tailwater) 1=Grate (Weir Controls 1.35 cfs @ 1.27 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,000.00' TW=997.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 444HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB30: Bluffs at Lake Lucy CB 30 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=0.250 ac Peak Elev=1,000.15' Storage=13 cf 1.35 cfs 1.35 cfs 1.35 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 445HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB37: Bluffs at Lake Lucy CB 37 Inflow Area = 1.260 ac, 6.35% Impervious, Inflow Depth = 4.72" for 100y 24hr event Inflow = 6.77 cfs @ 12.20 hrs, Volume= 0.495 af Outflow = 6.76 cfs @ 12.21 hrs, Volume= 0.495 af, Atten= 0%, Lag= 0.4 min Primary = 6.76 cfs @ 12.21 hrs, Volume= 0.495 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,004.44' @ 12.21 hrs Surf.Area= 560 sf Storage= 132 cf Plug-Flow detention time= 0.3 min calculated for 0.495 af (100% of inflow) Center-of-Mass det. time= 0.3 min ( 783.3 - 783.1 ) Volume Invert Avail.Storage Storage Description #1 1,004.00' 2,440 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,004.00 40 0 0 1,006.00 2,400 2,440 2,440 Device Routing Invert Outlet Devices #1 Primary 1,004.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 1,005.50'20.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=6.76 cfs @ 12.21 hrs HW=1,004.44' TW=975.61' (Dynamic Tailwater) 1=Grate (Weir Controls 6.76 cfs @ 2.17 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,004.00' TW=973.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 446HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB37: Bluffs at Lake Lucy CB 37 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=1.260 ac Peak Elev=1,004.44' Storage=132 cf 6.77 cfs 6.76 cfs 6.76 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 447HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB9: Bluffs at Lake Lucy CB 9 Inflow Area = 1.400 ac, 17.86% Impervious, Inflow Depth = 4.79" for 100y 24hr event Inflow = 7.49 cfs @ 12.20 hrs, Volume= 0.559 af Outflow = 7.49 cfs @ 12.20 hrs, Volume= 0.559 af, Atten= 0%, Lag= 0.1 min Primary = 7.49 cfs @ 12.20 hrs, Volume= 0.559 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,010.47' @ 12.20 hrs Surf.Area= 174 sf Storage= 51 cf Plug-Flow detention time= 0.1 min calculated for 0.559 af (100% of inflow) Center-of-Mass det. time= 0.1 min ( 778.8 - 778.7 ) Volume Invert Avail.Storage Storage Description #1 1,010.00' 650 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,010.00 40 0 0 1,012.00 610 650 650 Device Routing Invert Outlet Devices #1 Primary 1,010.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 1,012.00'20.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=7.49 cfs @ 12.20 hrs HW=1,010.47' TW=966.18' (Dynamic Tailwater) 1=Grate (Weir Controls 7.49 cfs @ 2.25 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,010.00' TW=964.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 448HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB9: Bluffs at Lake Lucy CB 9 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=1.400 ac Peak Elev=1,010.47' Storage=51 cf 7.49 cfs 7.49 cfs 7.49 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 449HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_Pond1: Bluffs at Lake Lucy Pond 1 Inflow Area = 10.000 ac, 36.90% Impervious, Inflow Depth = 5.40" for 100y 24hr event Inflow = 58.59 cfs @ 12.20 hrs, Volume= 4.503 af Outflow = 11.80 cfs @ 12.80 hrs, Volume= 4.503 af, Atten= 80%, Lag= 35.9 min Primary = 11.80 cfs @ 12.80 hrs, Volume= 4.503 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 973.00' Surf.Area= 21,004 sf Storage= 90,682 cf Peak Elev= 976.99' @ 12.80 hrs Surf.Area= 29,415 sf Storage= 190,429 cf (99,748 cf above start) Plug-Flow detention time= 386.6 min calculated for 2.421 af (54% of inflow) Center-of-Mass det. time= 174.6 min ( 943.2 - 768.5 ) Volume Invert Avail.Storage Storage Description #1 963.00' 333,459 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 963.00 2,140 0 0 964.00 3,250 2,695 2,695 966.00 5,742 8,992 11,687 968.00 8,547 14,289 25,976 970.00 11,621 20,168 46,144 972.00 14,943 26,564 72,708 973.00 21,004 17,974 90,682 974.00 22,948 21,976 112,658 976.00 27,007 49,955 162,613 978.00 31,892 58,899 221,512 980.00 39,370 71,262 292,774 981.00 42,000 40,685 333,459 Device Routing Invert Outlet Devices #1 Primary 970.50'27.0" Round OCS to Outlet L= 14.5' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 970.50' / 969.50' S= 0.0690 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 3.98 sf #2 Device 1 973.00'OCS Internal Weir, Cv= 2.62 (C= 3.28) Head (feet) 0.00 1.00 1.50 1.51 3.00 4.00 Width (feet) 0.50 0.50 0.50 4.00 4.00 4.00 #3 Device 2 970.50'15.0" Round Low Flow Pipe L= 30.4' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 970.00' / 970.50' S= -0.0164 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #4 Device 1 977.00'48.0" Horiz. OCS Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 979.10'8.0' long x 4.0' breadth EOF Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 450HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Primary OutFlow Max=11.80 cfs @ 12.80 hrs HW=976.99' TW=966.34' (Dynamic Tailwater) 1=OCS to Outlet (Passes 11.80 cfs of 55.41 cfs potential flow) 2=OCS Internal Weir (Passes 11.80 cfs of 57.83 cfs potential flow) 3=Low Flow Pipe (Inlet Controls 11.80 cfs @ 9.61 fps) 4=OCS Grate ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=973.00' TW=969.90' (Dynamic Tailwater) 5=EOF ( Controls 0.00 cfs) Pond BLL_Pond1: Bluffs at Lake Lucy Pond 1 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=10.000 ac Peak Elev=976.99' Storage=190,429 cf 58.59 cfs 11.80 cfs 11.80 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 451HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_Pond2: Bluffs at Lake Lucy Pond 2 [86] Warning: Oscillations may require smaller dt (severity=511) Inflow Area = 9.320 ac, 34.98% Impervious, Inflow Depth = 5.35" for 100y 24hr event Inflow = 54.23 cfs @ 12.20 hrs, Volume= 4.153 af Outflow = 15.47 cfs @ 12.68 hrs, Volume= 4.153 af, Atten= 71%, Lag= 28.8 min Discarded = 0.24 cfs @ 1.34 hrs, Volume= 1.472 af Primary = 15.23 cfs @ 12.68 hrs, Volume= 2.682 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 964.00' Surf.Area= 25,003 sf Storage= 19,002 cf Peak Elev= 967.32' @ 12.68 hrs Surf.Area= 34,223 sf Storage= 117,462 cf (98,460 cf above start) Plug-Flow detention time= 855.2 min calculated for 3.717 af (89% of inflow) Center-of-Mass det. time= 725.7 min ( 1,495.2 - 769.5 ) Volume Invert Avail.Storage Storage Description #1 958.00' 221,527 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 958.00 128 0 0 960.00 713 841 841 962.00 1,731 2,444 3,285 963.00 2,350 2,041 5,326 964.00 25,003 13,677 19,002 966.00 30,650 55,653 74,655 967.00 33,590 32,120 106,775 968.00 35,597 34,594 141,369 969.20 41,600 46,318 187,687 970.00 43,000 33,840 221,527 Device Routing Invert Outlet Devices #1 Primary 960.50'18.0" Round MH 16 to FES 15 L= 74.6' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 960.50' / 959.80' S= 0.0094 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.77 sf #2 Device 1 965.50'OCS Internal Weir, Cv= 2.62 (C= 3.28) Head (feet) 0.00 0.50 1.00 1.01 1.50 Width (feet) 0.50 0.50 0.50 4.00 4.00 #3 Device 2 961.50'15.0" Round Low Flow Pipe L= 32.2' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 961.50' / 961.50' S= 0.0000 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #4 Device 1 967.00'48.0" Horiz. OCS C= 0.600 Limited to weir flow at low heads #5 Discarded 964.00'0.24 cfs Infiltration when above 964.00' #6 Secondary 968.20'8.0' long x 4.0' breadth EOF Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 452HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Discarded OutFlow Max=0.24 cfs @ 1.34 hrs HW=964.00' (Free Discharge) 5=Infiltration (Exfiltration Controls 0.24 cfs) Primary OutFlow Max=15.23 cfs @ 12.68 hrs HW=967.32' TW=958.39' (Dynamic Tailwater) 1=MH 16 to FES 15 (Passes 15.23 cfs of 21.72 cfs potential flow) 2=OCS Internal Weir (Passes 7.96 cfs of 10.05 cfs potential flow) 3=Low Flow Pipe (Inlet Controls 7.96 cfs @ 6.49 fps) 4=OCS (Weir Controls 7.27 cfs @ 1.84 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=964.00' TW=957.00' (Dynamic Tailwater) 6=EOF ( Controls 0.00 cfs) Pond BLL_Pond2: Bluffs at Lake Lucy Pond 2 Inflow Outflow Discarded Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=9.320 ac Peak Elev=967.32' Storage=117,462 cf 54.23 cfs 15.47 cfs 0.24 cfs 15.23 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 453HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond CB-9: EX CB-9 [57] Hint: Peaked at 989.47' (Flood elevation advised) Inflow Area = 11.464 ac, 0.00% Impervious, Inflow Depth = 4.66" for 100y 24hr event Inflow = 11.78 cfs @ 12.59 hrs, Volume= 4.452 af Outflow = 11.78 cfs @ 12.60 hrs, Volume= 4.452 af, Atten= 0%, Lag= 0.1 min Primary = 11.78 cfs @ 12.60 hrs, Volume= 4.452 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 989.47' @ 12.60 hrs Device Routing Invert Outlet Devices #1 Primary 987.85'24.0" Round CMP_Round 24" L= 94.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 987.85' / 980.75' S= 0.0755 '/' Cc= 0.900 n= 0.025 Corrugated metal, Flow Area= 3.14 sf Primary OutFlow Max=11.78 cfs @ 12.60 hrs HW=989.47' TW=980.19' (Dynamic Tailwater) 1=CMP_Round 24" (Inlet Controls 11.78 cfs @ 4.33 fps) Pond CB-9: EX CB-9 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=11.464 ac Peak Elev=989.47' 24.0" Round Culvert n=0.025 L=94.0' S=0.0755 '/' 11.78 cfs 11.78 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 454HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond GB_CB27: Bluffs at Lake Lucy CB 29 Inflow Area = 0.100 ac, 30.00% Impervious, Inflow Depth = 5.23" for 100y 24hr event Inflow = 0.57 cfs @ 12.20 hrs, Volume= 0.044 af Outflow = 0.57 cfs @ 12.20 hrs, Volume= 0.044 af, Atten= 0%, Lag= 0.1 min Primary = 0.57 cfs @ 12.20 hrs, Volume= 0.044 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 997.09' @ 12.20 hrs Surf.Area= 47 sf Storage= 4 cf Plug-Flow detention time= 0.2 min calculated for 0.044 af (100% of inflow) Center-of-Mass det. time= 0.2 min ( 771.9 - 771.6 ) Volume Invert Avail.Storage Storage Description #1 997.00' 80 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 997.00 40 0 0 998.00 120 80 80 Device Routing Invert Outlet Devices #1 Primary 997.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 997.50'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.57 cfs @ 12.20 hrs HW=997.09' TW=975.57' (Dynamic Tailwater) 1=Grate (Weir Controls 0.57 cfs @ 0.95 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=997.00' TW=995.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 455HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond GB_CB27: Bluffs at Lake Lucy CB 29 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=0.100 ac Peak Elev=997.09' Storage=4 cf 0.57 cfs 0.57 cfs 0.57 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 456HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond LUCY: LAKE LUCY [40] Hint: Not Described (Outflow=Inflow) Inflow = 188.43 cfs @ 13.65 hrs, Volume= 141.337 af Primary = 188.43 cfs @ 13.65 hrs, Volume= 141.337 af, Atten= 0%, Lag= 0.1 min Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Pond LUCY: LAKE LUCY Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)210 200 190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 188.43 cfs 188.43 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 457HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-1: P-LU 2-1 [86] Warning: Oscillations may require smaller dt (severity=48731) Inflow = 420.61 cfs @ 12.65 hrs, Volume= 110.263 af Outflow = 182.72 cfs @ 13.66 hrs, Volume= 138.601 af, Atten= 57%, Lag= 60.2 min Primary = 182.72 cfs @ 13.66 hrs, Volume= 138.601 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 958.84' @ 13.66 hrs Surf.Area= 971,469 sf Storage= 1,166,110 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 1,732.5 min ( 3,255.7 - 1,523.2 ) Volume Invert Avail.Storage Storage Description #1 957.00'263,128,940,839 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 957.00 8,105 0 0 958.00 557,600 282,853 282,853 960.00 1,540,893 2,098,493 2,381,346 962.00 2,214,005 3,754,898 6,136,244 96,400.00 3,300,000 263,122,804,595 263,128,940,839 Device Routing Invert Outlet Devices #1 Primary 957.00'20.0' long Broad-Crested Rectangular Weir X 0.00 Head (feet) 0.50 1.00 1.50 Coef. (English) 3.00 3.00 3.00 #2 Primary 956.50'Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 0.00 0.50 1.00 1.50 2.00 2.50 Width (feet) 2.00 6.00 16.00 25.00 37.00 45.00 Primary OutFlow Max=182.72 cfs @ 13.66 hrs HW=958.84' TW=0.00' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) 2=Custom Weir/Orifice (Weir Controls 182.72 cfs @ 3.90 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 458HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-1: P-LU 2-1 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)460 440 420 400 380 360 340 320 300 280 260 240 220 200 180 160 140 120 100 80 60 40 20 0 Peak Elev=958.84' Storage=1,166,110 cf 420.61 cfs 182.72 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 459HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-10: P-LU 2-10 Inflow Area = 9.880 ac, 0.00% Impervious, Inflow Depth = 4.29" for 100y 24hr event Inflow = 72.06 cfs @ 12.09 hrs, Volume= 3.533 af Outflow = 18.74 cfs @ 12.37 hrs, Volume= 3.368 af, Atten= 74%, Lag= 17.0 min Primary = 18.74 cfs @ 12.37 hrs, Volume= 3.368 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 977.70' @ 12.37 hrs Surf.Area= 0.323 ac Storage= 1.189 af Plug-Flow detention time= 118.1 min calculated for 3.368 af (95% of inflow) Center-of-Mass det. time= 96.3 min ( 878.1 - 781.8 ) Volume Invert Avail.Storage Storage Description #1 968.00' 1.289 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.009 0.000 0.000 972.00 0.070 0.158 0.158 974.00 0.140 0.210 0.368 976.00 0.220 0.360 0.728 978.00 0.341 0.561 1.289 Device Routing Invert Outlet Devices #1 Primary 972.10'18.0" Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=18.74 cfs @ 12.37 hrs HW=977.70' TW=972.52' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 18.74 cfs @ 10.60 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 460HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-10: P-LU 2-10 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=9.880 ac Peak Elev=977.70' Storage=1.189 af 72.06 cfs 18.74 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 461HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-11: P-LU 2-11 Inflow = 292.63 cfs @ 12.17 hrs, Volume= 24.273 af Outflow = 4.38 cfs @ 18.37 hrs, Volume= 17.243 af, Atten= 99%, Lag= 371.7 min Primary = 4.38 cfs @ 18.37 hrs, Volume= 17.243 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 974.34' @ 18.17 hrs Surf.Area= 8.677 ac Storage= 21.184 af Plug-Flow detention time= 2,112.6 min calculated for 17.242 af (71% of inflow) Center-of-Mass det. time= 2,049.0 min ( 2,856.6 - 807.6 ) Volume Invert Avail.Storage Storage Description #1 968.00' 93.400 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.360 0.000 0.000 970.00 1.000 1.360 1.360 972.00 4.000 5.000 6.360 976.00 12.000 32.000 38.360 980.00 15.520 55.040 93.400 Device Routing Invert Outlet Devices #1 Primary 972.01'15.0" Round Culvert L= 114.0' Ke= 0.500 Inlet / Outlet Invert= 972.01' / 971.97' S= 0.0004 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 1.23 sf Primary OutFlow Max=4.38 cfs @ 18.37 hrs HW=974.34' TW=973.66' (Dynamic Tailwater) 1=Culvert (Outlet Controls 4.38 cfs @ 3.57 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 462HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-11: P-LU 2-11 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)320 300 280 260 240 220 200 180 160 140 120 100 80 60 40 20 0 Peak Elev=974.34' Storage=21.184 af 15.0" Round Culvert n=0.011 L=114.0' S=0.0004 '/' 292.63 cfs 4.38 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 463HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-12: P-LU 2-12 Inflow Area = 9.720 ac, 0.00% Impervious, Inflow Depth = 4.18" for 100y 24hr event Inflow = 69.09 cfs @ 12.09 hrs, Volume= 3.386 af Outflow = 15.71 cfs @ 12.55 hrs, Volume= 2.366 af, Atten= 77%, Lag= 27.6 min Primary = 9.81 cfs @ 12.55 hrs, Volume= 2.284 af Secondary = 5.90 cfs @ 12.55 hrs, Volume= 0.082 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 980.08' @ 12.55 hrs Surf.Area= 0.434 ac Storage= 1.744 af Plug-Flow detention time= 160.2 min calculated for 2.366 af (70% of inflow) Center-of-Mass det. time= 104.4 min ( 887.4 - 783.0 ) Volume Invert Avail.Storage Storage Description #1 972.00' 2.680 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 972.00 0.080 0.000 0.000 978.00 0.260 1.020 1.020 980.00 0.430 0.690 1.710 982.00 0.540 0.970 2.680 Device Routing Invert Outlet Devices #1 Primary 978.00'18.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 980.00'100.0' long x 26.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=9.81 cfs @ 12.55 hrs HW=980.08' TW=972.99' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 9.81 cfs @ 5.55 fps) Secondary OutFlow Max=5.90 cfs @ 12.55 hrs HW=980.08' TW=972.99' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir (Weir Controls 5.90 cfs @ 0.75 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 464HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-12: P-LU 2-12 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=9.720 ac Peak Elev=980.08' Storage=1.744 af 69.09 cfs 15.71 cfs 9.81 cfs 5.90 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 465HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-13: P-LU 2-13 Inflow Area = 15.390 ac, 0.00% Impervious, Inflow Depth = 4.18" for 100y 24hr event Inflow = 103.72 cfs @ 12.10 hrs, Volume= 5.362 af Outflow = 27.50 cfs @ 12.41 hrs, Volume= 4.850 af, Atten= 73%, Lag= 19.1 min Primary = 27.50 cfs @ 12.41 hrs, Volume= 4.850 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 993.90' @ 12.41 hrs Surf.Area= 0.531 ac Storage= 2.111 af Plug-Flow detention time= 89.2 min calculated for 4.850 af (90% of inflow) Center-of-Mass det. time= 55.7 min ( 839.6 - 783.9 ) Volume Invert Avail.Storage Storage Description #1 986.00' 2.750 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 986.00 0.054 0.000 0.000 989.60 0.230 0.511 0.511 993.00 0.450 1.156 1.667 994.00 0.540 0.495 2.162 995.00 0.635 0.587 2.750 Device Routing Invert Outlet Devices #1 Primary 989.60'24.0" Round Culvert L= 110.0' Ke= 0.500 Inlet / Outlet Invert= 989.60' / 983.00' S= 0.0600 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 3.14 sf Primary OutFlow Max=27.50 cfs @ 12.41 hrs HW=993.90' TW=972.73' (Dynamic Tailwater) 1=Culvert (Inlet Controls 27.50 cfs @ 8.75 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 466HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-13: P-LU 2-13 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)115 110 105 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=15.390 ac Peak Elev=993.90' Storage=2.111 af 24.0" Round Culvert n=0.011 L=110.0' S=0.0600 '/' 103.72 cfs 27.50 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 467HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-2: P-LU 2-2 [86] Warning: Oscillations may require smaller dt (severity=13145) Inflow = 138.51 cfs @ 12.09 hrs, Volume= 30.050 af Outflow = 7.33 cfs @ 20.73 hrs, Volume= 30.049 af, Atten= 95%, Lag= 518.2 min Primary = 7.33 cfs @ 20.73 hrs, Volume= 30.048 af Secondary = 0.22 cfs @ 12.26 hrs, Volume= 0.002 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 969.90' Surf.Area= 0.094 ac Storage= 0.085 af Peak Elev= 973.67' @ 18.08 hrs Surf.Area= 5.196 ac Storage= 9.447 af (9.362 af above start) Plug-Flow detention time= 601.3 min calculated for 29.964 af (100% of inflow) Center-of-Mass det. time= 558.7 min ( 2,779.8 - 2,221.1 ) Volume Invert Avail.Storage Storage Description #1 968.00' 11.223 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.010 0.000 0.000 969.00 0.040 0.025 0.025 970.00 0.100 0.070 0.095 971.00 0.533 0.316 0.411 972.00 3.130 1.831 2.243 973.00 4.690 3.910 6.153 974.00 5.450 5.070 11.223 Device Routing Invert Outlet Devices #1 Primary 968.58'30.0" Round RCP_Round 30" L= 85.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 968.58' / 968.08' S= 0.0059 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 4.91 sf #2 Secondary 972.01'15.0" Round Culvert L= 114.0' Ke= 0.500 Inlet / Outlet Invert= 971.97' / 972.01' S= -0.0004 '/' Cc= 0.900 n= 0.011, Flow Area= 1.23 sf Primary OutFlow Max=7.33 cfs @ 20.73 hrs HW=973.62' TW=973.53' (Dynamic Tailwater) 1=RCP_Round 30" (Inlet Controls 7.33 cfs @ 1.49 fps) Secondary OutFlow Max=0.21 cfs @ 12.26 hrs HW=972.35' TW=972.27' (Dynamic Tailwater) 2=Culvert (Outlet Controls 0.21 cfs @ 0.98 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 468HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-2: P-LU 2-2 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 Peak Elev=973.67' Storage=9.447 af 138.51 cfs 7.33 cfs 7.33 cfs 0.22 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 469HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Inflow Area = 53.360 ac, 0.00% Impervious, Inflow Depth = 4.21" for 100y 24hr event Inflow = 240.02 cfs @ 12.22 hrs, Volume= 18.720 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 993.92' @ 250.00 hrs Surf.Area= 12.726 ac Storage= 18.720 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 991.90' 52.450 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 991.90 5.100 0.000 0.000 992.00 5.900 0.550 0.550 994.00 13.000 18.900 19.450 996.00 20.000 33.000 52.450 Device Routing Invert Outlet Devices #1 Primary 995.00'30.0' long Broad-Crested Rectangular Weir Head (feet) 0.50 1.00 Coef. (English) 2.80 2.80 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=991.90' TW=957.00' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 470HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)260 240 220 200 180 160 140 120 100 80 60 40 20 0 Inflow Area=53.360 ac Peak Elev=993.92' Storage=18.720 af 240.02 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 471HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-4: P-LU 2-4 Inflow Area = 13.950 ac, 2.37% Impervious, Inflow Depth = 4.96" for 100y 24hr event Inflow = 99.57 cfs @ 12.11 hrs, Volume= 5.765 af Outflow = 96.71 cfs @ 12.13 hrs, Volume= 5.445 af, Atten= 3%, Lag= 1.0 min Primary = 12.52 cfs @ 12.13 hrs, Volume= 2.490 af Secondary = 84.19 cfs @ 12.13 hrs, Volume= 2.955 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 976.04' @ 12.13 hrs Surf.Area= 0.201 ac Storage= 0.669 af Plug-Flow detention time= 46.3 min calculated for 5.445 af (94% of inflow) Center-of-Mass det. time= 22.4 min ( 798.8 - 776.4 ) Volume Invert Avail.Storage Storage Description #1 970.00' 1.120 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 970.00 0.020 0.000 0.000 974.00 0.140 0.320 0.320 978.00 0.260 0.800 1.120 Device Routing Invert Outlet Devices #1 Primary 974.00'21.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 975.00'30.0' long x 15.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=12.52 cfs @ 12.13 hrs HW=976.04' TW=972.32' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 12.52 cfs @ 5.21 fps) Secondary OutFlow Max=84.19 cfs @ 12.13 hrs HW=976.04' TW=972.32' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir (Weir Controls 84.19 cfs @ 2.69 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 472HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-4: P-LU 2-4 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)110 105 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=13.950 ac Peak Elev=976.04' Storage=0.669 af 99.57 cfs 96.71 cfs 12.52 cfs 84.19 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 473HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-5: P-LU 2-5 Inflow Area = 9.150 ac, 0.00% Impervious, Inflow Depth = 4.85" for 100y 24hr event Inflow = 71.12 cfs @ 12.10 hrs, Volume= 3.697 af Outflow = 15.79 cfs @ 12.56 hrs, Volume= 3.716 af, Atten= 78%, Lag= 28.0 min Primary = 15.79 cfs @ 12.56 hrs, Volume= 3.716 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 965.00' Surf.Area= 0.200 ac Storage= 0.447 af Peak Elev= 967.53' @ 12.56 hrs Surf.Area= 0.935 ac Storage= 2.056 af (1.609 af above start) Plug-Flow detention time= 156.6 min calculated for 3.269 af (88% of inflow) Center-of-Mass det. time= 97.0 min ( 873.7 - 776.7 ) Volume Invert Avail.Storage Storage Description #1 956.00' 2.352 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 956.00 0.004 0.000 0.000 962.00 0.030 0.102 0.102 965.00 0.200 0.345 0.447 968.00 1.070 1.905 2.352 Device Routing Invert Outlet Devices #1 Primary 962.98'18.0" Round Culvert L= 30.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 962.98' / 962.83' S= 0.0050 '/' Cc= 0.900 n= 0.013, Flow Area= 1.77 sf #2 Device 1 964.83'15.0" Round Culvert L= 15.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 963.38' / 964.83' S= -0.0967 '/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #3 Device 1 966.00'18.0" W x 12.0" H Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=15.79 cfs @ 12.56 hrs HW=967.53' TW=958.25' (Dynamic Tailwater) 1=Culvert (Passes 15.79 cfs of 16.60 cfs potential flow) 2=Culvert (Inlet Controls 8.52 cfs @ 6.94 fps) 3=Orifice/Grate (Orifice Controls 7.27 cfs @ 4.85 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 474HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-5: P-LU 2-5 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=9.150 ac Peak Elev=967.53' Storage=2.056 af 71.12 cfs 15.79 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 475HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-6: Wetland 11 Inflow Area = 23.494 ac, 12.62% Impervious, Inflow Depth = 4.83" for 100y 24hr event Inflow = 56.66 cfs @ 12.17 hrs, Volume= 9.453 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 982.43' @ 250.00 hrs Surf.Area= 153,609 sf Storage= 411,780 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 978.00' 1,458,300 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 978.00 16,553 0 0 980.00 90,625 107,178 107,178 982.00 148,800 239,425 346,603 984.00 171,115 319,915 666,518 986.00 197,334 368,449 1,034,967 988.00 225,999 423,333 1,458,300 Device Routing Invert Outlet Devices #1 Primary 982.57'15.0" Round RCP_Round 15" L= 50.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 982.57' / 982.05' S= 0.0104 '/' Cc= 0.900 n= 0.013 Concrete sewer w/manholes & inlets, Flow Area= 1.23 sf Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=978.00' TW=965.00' (Dynamic Tailwater) 1=RCP_Round 15" ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 476HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-6: Wetland 11 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=23.494 ac Peak Elev=982.43' Storage=411,780 cf 15.0" Round Culvert n=0.013 L=50.0' S=0.0104 '/' 56.66 cfs 0.00 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 477HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-7: P-LU 2-7 Inflow Area = 8.904 ac, 0.00% Impervious, Inflow Depth = 4.74" for 100y 24hr event Inflow = 67.72 cfs @ 12.10 hrs, Volume= 3.514 af Outflow = 8.16 cfs @ 13.04 hrs, Volume= 3.514 af, Atten= 88%, Lag= 56.4 min Primary = 8.16 cfs @ 13.04 hrs, Volume= 3.514 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 995.27' Surf.Area= 7,683 sf Storage= 18,263 cf Peak Elev= 1,000.79' @ 13.04 hrs Surf.Area= 19,671 sf Storage= 93,196 cf (74,933 cf above start) Plug-Flow detention time= 178.2 min calculated for 3.094 af (88% of inflow) Center-of-Mass det. time= 117.3 min ( 895.2 - 777.9 ) Volume Invert Avail.Storage Storage Description #1 991.00' 117,493 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.00 871 0 0 995.27 7,683 18,263 18,263 996.00 8,932 6,064 24,327 998.00 12,906 21,838 46,165 1,000.00 18,379 31,285 77,450 1,002.00 21,664 40,043 117,493 Device Routing Invert Outlet Devices #1 Primary 995.27'12.0" Round RCP_Round 12" L= 60.8' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 995.27' / 994.07' S= 0.0197 '/' Cc= 0.900 n= 0.013, Flow Area= 0.79 sf Primary OutFlow Max=8.16 cfs @ 13.04 hrs HW=1,000.79' TW=989.44' (Dynamic Tailwater) 1=RCP_Round 12" (Barrel Controls 8.16 cfs @ 10.39 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 478HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-7: P-LU 2-7 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=8.904 ac Peak Elev=1,000.79' Storage=93,196 cf 12.0" Round Culvert n=0.013 L=60.8' S=0.0197 '/' 67.72 cfs 8.16 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 479HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-8: P-LU 2-8 Inflow Area = 5.830 ac, 0.00% Impervious, Inflow Depth = 4.29" for 100y 24hr event Inflow = 44.80 cfs @ 12.07 hrs, Volume= 2.085 af Outflow = 43.42 cfs @ 12.09 hrs, Volume= 1.724 af, Atten= 3%, Lag= 0.9 min Primary = 3.34 cfs @ 12.09 hrs, Volume= 0.931 af Secondary = 40.08 cfs @ 12.09 hrs, Volume= 0.793 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 997.28' @ 12.09 hrs Surf.Area= 0.191 ac Storage= 0.572 af Plug-Flow detention time= 98.3 min calculated for 1.724 af (83% of inflow) Center-of-Mass det. time= 54.1 min ( 835.0 - 780.9 ) Volume Invert Avail.Storage Storage Description #1 992.00' 0.720 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 992.00 0.040 0.000 0.000 996.00 0.140 0.360 0.360 998.00 0.220 0.360 0.720 Device Routing Invert Outlet Devices #1 Primary 996.00'12.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 997.00'50.0' long x 20.0' breadth Broad-Crested Rectangular Weir X 2.00 Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=3.34 cfs @ 12.09 hrs HW=997.28' TW=992.25' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 3.34 cfs @ 4.26 fps) Secondary OutFlow Max=40.07 cfs @ 12.09 hrs HW=997.28' TW=992.25' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir (Weir Controls 40.07 cfs @ 1.43 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 480HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-8: P-LU 2-8 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)50 45 40 35 30 25 20 15 10 5 0 Inflow Area=5.830 ac Peak Elev=997.28' Storage=0.572 af 44.80 cfs 43.42 cfs 3.34 cfs 40.08 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 481HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-9: P-LU 2-9 Inflow Area = 11.210 ac, 0.00% Impervious, Inflow Depth = 4.07" for 100y 24hr event Inflow = 73.55 cfs @ 12.10 hrs, Volume= 3.803 af Outflow = 1.21 cfs @ 15.16 hrs, Volume= 1.973 af, Atten= 98%, Lag= 183.6 min Primary = 1.21 cfs @ 15.16 hrs, Volume= 1.973 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 977.89' @ 15.16 hrs Surf.Area= 1.702 ac Storage= 3.242 af Plug-Flow detention time= 1,265.7 min calculated for 1.973 af (52% of inflow) Center-of-Mass det. time= 1,200.0 min ( 1,985.2 - 785.1 ) Volume Invert Avail.Storage Storage Description #1 975.00' 3.430 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 975.00 0.230 0.000 0.000 977.00 1.560 1.790 1.790 978.00 1.720 1.640 3.430 Device Routing Invert Outlet Devices #1 Primary 977.00'8.0" Vert. Orifice/Grate C= 0.580 Primary OutFlow Max=1.21 cfs @ 15.16 hrs HW=977.89' TW=973.63' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 1.21 cfs @ 3.46 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 482HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-9: P-LU 2-9 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=11.210 ac Peak Elev=977.89' Storage=3.242 af 73.55 cfs 1.21 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 483HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU-2-16: P-LU-2-16 Inflow Area = 2.560 ac, 0.00% Impervious, Inflow Depth = 4.40" for 100y 24hr event Inflow = 21.26 cfs @ 12.07 hrs, Volume= 0.939 af Outflow = 3.66 cfs @ 12.55 hrs, Volume= 0.938 af, Atten= 83%, Lag= 29.1 min Primary = 3.66 cfs @ 12.55 hrs, Volume= 0.938 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 994.07' Surf.Area= 9,913 sf Storage= 902 cf Peak Elev= 995.51' @ 12.55 hrs Surf.Area= 14,513 sf Storage= 19,443 cf (18,541 cf above start) Plug-Flow detention time= 164.4 min calculated for 0.917 af (98% of inflow) Center-of-Mass det. time= 146.4 min ( 925.2 - 778.8 ) Volume Invert Avail.Storage Storage Description #1 994.00' 107,634 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 994.00 9,689 0 0 996.00 16,084 25,773 25,773 998.00 20,360 36,444 62,217 1,000.00 25,057 45,417 107,634 Device Routing Invert Outlet Devices #1 Primary 994.07'12.0" Round RCP_Round 12" L= 93.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 994.07' / 987.85' S= 0.0669 '/' Cc= 0.900 n= 0.013, Flow Area= 0.79 sf Primary OutFlow Max=3.66 cfs @ 12.55 hrs HW=995.51' TW=989.46' (Dynamic Tailwater) 1=RCP_Round 12" (Inlet Controls 3.66 cfs @ 4.67 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 484HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU-2-16: P-LU-2-16 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=2.560 ac Peak Elev=995.51' Storage=19,443 cf 12.0" Round Culvert n=0.013 L=93.0' S=0.0669 '/' 21.26 cfs 3.66 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 485HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU10-1: P-LU 10-1 Inflow Area = 7.720 ac, 1.30% Impervious, Inflow Depth = 4.87" for 100y 24hr event Inflow = 61.85 cfs @ 12.09 hrs, Volume= 3.131 af Outflow = 42.35 cfs @ 12.15 hrs, Volume= 2.737 af, Atten= 32%, Lag= 3.9 min Primary = 6.18 cfs @ 12.15 hrs, Volume= 2.008 af Secondary = 36.16 cfs @ 12.15 hrs, Volume= 0.729 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 966.27' @ 12.15 hrs Surf.Area= 0.307 ac Storage= 1.148 af Plug-Flow detention time= 114.1 min calculated for 2.737 af (87% of inflow) Center-of-Mass det. time= 76.9 min ( 852.4 - 775.5 ) Volume Invert Avail.Storage Storage Description #1 958.00' 1.715 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 958.00 0.020 0.000 0.000 962.00 0.100 0.240 0.240 963.10 0.180 0.154 0.394 964.00 0.200 0.171 0.565 966.00 0.300 0.500 1.065 968.00 0.350 0.650 1.715 Device Routing Invert Outlet Devices #1 Primary 963.10'12.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 966.00'100.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=6.18 cfs @ 12.15 hrs HW=966.27' TW=0.00' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 6.18 cfs @ 7.87 fps) Secondary OutFlow Max=36.16 cfs @ 12.15 hrs HW=966.27' TW=0.00' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir (Weir Controls 36.16 cfs @ 1.32 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 486HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU10-1: P-LU 10-1 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=7.720 ac Peak Elev=966.27' Storage=1.148 af 61.85 cfs 42.35 cfs 6.18 cfs 36.16 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 487HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W12: Wetland 12 Inflow Area = 0.734 ac, 6.42% Impervious, Inflow Depth = 4.41" for 100y 24hr event Inflow = 6.50 cfs @ 12.05 hrs, Volume= 0.269 af Outflow = 0.96 cfs @ 12.53 hrs, Volume= 0.190 af, Atten= 85%, Lag= 28.9 min Primary = 0.96 cfs @ 12.53 hrs, Volume= 0.190 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 994.55' @ 12.53 hrs Surf.Area= 0.138 ac Storage= 0.145 af Plug-Flow detention time= 218.0 min calculated for 0.190 af (71% of inflow) Center-of-Mass det. time= 162.9 min ( 937.2 - 774.3 ) Volume Invert Avail.Storage Storage Description #1 992.50' 0.430 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 992.50 0.002 0.000 0.000 993.00 0.035 0.009 0.009 993.50 0.070 0.026 0.035 994.00 0.104 0.043 0.079 994.50 0.134 0.059 0.138 995.00 0.171 0.076 0.215 995.50 0.210 0.095 0.310 996.00 0.269 0.120 0.430 Device Routing Invert Outlet Devices #1 Primary 994.00'15.0" Round RCP_Round 15" L= 45.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 994.00' / 993.82' S= 0.0040 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf Primary OutFlow Max=0.96 cfs @ 12.53 hrs HW=994.55' TW=970.05' (Dynamic Tailwater) 1=RCP_Round 15" (Barrel Controls 0.96 cfs @ 2.72 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 488HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W12: Wetland 12 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=0.734 ac Peak Elev=994.55' Storage=0.145 af 15.0" Round Culvert n=0.013 L=45.0' S=0.0040 '/' 6.50 cfs 0.96 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 489HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W13: Wetland 13 Inflow Area = 1.729 ac, 6.61% Impervious, Inflow Depth = 4.52" for 100y 24hr event Inflow = 11.05 cfs @ 12.13 hrs, Volume= 0.651 af Outflow = 5.88 cfs @ 12.28 hrs, Volume= 0.525 af, Atten= 47%, Lag= 8.9 min Primary = 5.88 cfs @ 12.28 hrs, Volume= 0.525 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 993.38' @ 12.28 hrs Surf.Area= 15,185 sf Storage= 10,269 cf Plug-Flow detention time= 89.9 min calculated for 0.525 af (81% of inflow) Center-of-Mass det. time= 43.4 min ( 823.4 - 780.0 ) Volume Invert Avail.Storage Storage Description #1 991.50' 22,402 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.50 17 0 0 992.00 648 166 166 993.00 10,069 5,359 5,525 994.00 23,685 16,877 22,402 Device Routing Invert Outlet Devices #1 Primary 993.00'10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=5.88 cfs @ 12.28 hrs HW=993.38' TW=988.02' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 5.88 cfs @ 1.56 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 490HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W13: Wetland 13 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=1.729 ac Peak Elev=993.38' Storage=10,269 cf 11.05 cfs 5.88 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 491HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W14: Wetland 14 Inflow Area = 5.397 ac, 16.24% Impervious, Inflow Depth = 4.50" for 100y 24hr event Inflow = 27.66 cfs @ 12.14 hrs, Volume= 2.022 af Outflow = 22.94 cfs @ 12.22 hrs, Volume= 1.988 af, Atten= 17%, Lag= 4.7 min Primary = 22.94 cfs @ 12.22 hrs, Volume= 1.988 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 988.05' @ 12.22 hrs Surf.Area= 9,557 sf Storage= 9,194 cf Plug-Flow detention time= 55.8 min calculated for 1.988 af (98% of inflow) Center-of-Mass det. time= 13.5 min ( 854.0 - 840.4 ) Volume Invert Avail.Storage Storage Description #1 986.00' 27,529 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 986.00 261 0 0 986.50 1,045 327 327 987.00 3,560 1,151 1,478 987.50 8,040 2,900 4,378 988.00 9,380 4,355 8,733 988.50 11,195 5,144 13,877 989.00 13,765 6,240 20,117 989.50 15,884 7,412 27,529 Device Routing Invert Outlet Devices #1 Primary 987.00'8.0' long x 4.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Primary OutFlow Max=22.94 cfs @ 12.22 hrs HW=988.05' TW=985.82' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 22.94 cfs @ 2.73 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 492HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W14: Wetland 14 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=5.397 ac Peak Elev=988.05' Storage=9,194 cf 27.66 cfs 22.94 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 493HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W2: Wetland 2 [86] Warning: Oscillations may require smaller dt (severity=11708) Inflow = 161.41 cfs @ 12.12 hrs, Volume= 39.121 af Outflow = 24.33 cfs @ 12.33 hrs, Volume= 39.121 af, Atten= 85%, Lag= 12.8 min Primary = 8.77 cfs @ 18.09 hrs, Volume= 37.524 af Secondary = 16.12 cfs @ 12.31 hrs, Volume= 1.597 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 969.90' Surf.Area= 2,833 sf Storage= 1,514 cf Peak Elev= 973.58' @ 18.09 hrs Surf.Area= 136,797 sf Storage= 238,610 cf (237,096 cf above start) Plug-Flow detention time= 274.0 min calculated for 39.086 af (100% of inflow) Center-of-Mass det. time= 260.6 min ( 2,579.1 - 2,318.5 ) Volume Invert Avail.Storage Storage Description #1 967.00' 1,052,847 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 967.00 10 0 0 968.85 12 20 20 970.00 3,102 1,791 1,811 972.00 70,418 73,520 75,331 974.00 154,658 225,076 300,407 976.00 189,337 343,995 644,402 978.00 219,108 408,445 1,052,847 Device Routing Invert Outlet Devices #1 Primary 967.50'18.0" Round MH 44 to MH 41 L= 40.4' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 967.50' / 967.00' S= 0.0124 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.77 sf #2 Device 1 973.60'48.0" Horiz. OCS C= 0.600 Limited to weir flow at low heads #3 Device 1 967.70'12.0" Round FES 42 to MH 44 L= 13.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 967.70' / 967.50' S= 0.0154 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 0.79 sf #4 Device 3 969.90'20.0' long x 5.0' breadth Ditch Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #5 Secondary 968.58'30.0" Round Culvert to LU 2-2 L= 85.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 968.58' / 968.08' S= 0.0059 '/' Cc= 0.900 n= 0.012, Flow Area= 4.91 sf Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 494HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Primary OutFlow Max=8.77 cfs @ 18.09 hrs HW=973.58' TW=965.66' (Dynamic Tailwater) 1=MH 44 to MH 41 (Passes 8.77 cfs of 19.64 cfs potential flow) 2=OCS ( Controls 0.00 cfs) 3=FES 42 to MH 44 (Inlet Controls 8.77 cfs @ 11.16 fps) 4=Ditch Berm (Passes 8.77 cfs of 378.75 cfs potential flow) Secondary OutFlow Max=16.06 cfs @ 12.31 hrs HW=972.89' TW=972.43' (Dynamic Tailwater) 5=Culvert to LU 2-2 (Inlet Controls 16.06 cfs @ 3.27 fps) Pond W2: Wetland 2 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 Peak Elev=973.58' Storage=238,610 cf 161.41 cfs 24.33 cfs 8.77 cfs16.12 cfs Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 495HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W6: Wetland 6 Inflow Area = 1.668 ac, 12.44% Impervious, Inflow Depth = 4.32" for 100y 24hr event Inflow = 10.31 cfs @ 12.09 hrs, Volume= 0.600 af Outflow = 4.25 cfs @ 12.33 hrs, Volume= 0.344 af, Atten= 59%, Lag= 13.9 min Primary = 4.25 cfs @ 12.33 hrs, Volume= 0.344 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,001.10' @ 12.33 hrs Surf.Area= 10,461 sf Storage= 12,189 cf Plug-Flow detention time= 115.0 min calculated for 0.344 af (57% of inflow) Center-of-Mass det. time= 55.8 min ( 836.1 - 780.3 ) Volume Invert Avail.Storage Storage Description #1 999.00' 16,680 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 999.00 2,453 0 0 999.50 3,157 1,403 1,403 1,000.00 5,185 2,086 3,488 1,000.50 7,715 3,225 6,713 1,001.00 10,073 4,447 11,160 1,001.50 12,007 5,520 16,680 Device Routing Invert Outlet Devices #1 Primary 1,001.00'50.0' long x 25.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=4.25 cfs @ 12.33 hrs HW=1,001.10' TW=999.87' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 4.25 cfs @ 0.85 fps) Bluffs at Lake Lucy Proposed MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_Proposed Conditi Printed 9/23/2020Prepared by AE2S Page 496HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W6: Wetland 6 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=1.668 ac Peak Elev=1,001.10' Storage=12,189 cf 10.31 cfs 4.25 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 497HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Time span=0.00-250.00 hrs, dt=0.002 hrs, 125001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Sim-Route method - Pond routing by Sim-Route method Runoff Area=38.561 ac 45.60% Impervious Runoff Depth=5.45"Subcatchment 300S: 300 Flow Length=1,575' Slope=0.0350 '/' Tc=20.7 min CN=WQ Runoff=6.17 cfs 17.527 af Runoff Area=5.606 ac 29.33% Impervious Runoff Depth=4.92"Subcatchment 301S: 301 Flow Length=275' Slope=0.1030 '/' Tc=3.5 min CN=WQ Runoff=0.84 cfs 2.298 af Runoff Area=2.200 ac 77.27% Impervious Runoff Depth=6.34"Subcatchment 400S: Proposed CR 117 Tc=20.0 min CN=WQ Runoff=0.39 cfs 1.162 af Runoff Area=2.600 ac 17.79% Impervious Runoff Depth=4.55"Subcatchment 401S: 401 Flow Length=500' Slope=0.0500 '/' Tc=8.9 min CN=WQ Runoff=0.37 cfs 0.986 af Runoff Area=1.766 ac 29.44% Impervious Runoff Depth=5.01"Subcatchment 500S: 500 Flow Length=510' Slope=0.0400 '/' Tc=9.0 min CN=WQ Runoff=0.27 cfs 0.737 af Runoff Area=0.529 ac 14.88% Impervious Runoff Depth=4.44"Subcatchment 600S: 600 Flow Length=495' Slope=0.0400 '/' Tc=10.2 min CN=WQ Runoff=0.07 cfs 0.196 af Runoff Area=8.313 ac 0.56% Impervious Runoff Depth=3.92"Subcatchment 700S: 700 Flow Length=500' Slope=0.0900 '/' Tc=7.9 min CN=WQ Runoff=1.06 cfs 2.712 af Runoff Area=0.636 ac 16.77% Impervious Runoff Depth=4.48"Subcatchment 701S: 701 Flow Length=255' Slope=0.0400 '/' Tc=6.0 min CN=WQ Runoff=0.09 cfs 0.238 af Runoff Area=1.094 ac 15.23% Impervious Runoff Depth=4.49"Subcatchment 800S: 800 Flow Length=355' Slope=0.0400 '/' Tc=7.8 min CN=WQ Runoff=0.15 cfs 0.409 af Runoff Area=1.215 ac 34.66% Impervious Runoff Depth=5.17"Subcatchment 900S: 900 Flow Length=470' Slope=0.0300 '/' Tc=9.4 min CN=WQ Runoff=0.19 cfs 0.523 af Runoff Area=6.910 ac 46.89% Impervious Runoff Depth=5.45"Subcatchment BLL_PR101: BLL_PR101 Tc=15.0 min CN=WQ Runoff=1.11 cfs 3.140 af Runoff Area=0.740 ac 10.81% Impervious Runoff Depth=4.36"Subcatchment BLL_PR102: BLL_PR102 Tc=15.0 min CN=WQ Runoff=0.10 cfs 0.269 af Runoff Area=0.250 ac 16.00% Impervious Runoff Depth=4.64"Subcatchment BLL_PR103: BLL_PR103 Tc=15.0 min CN=WQ Runoff=0.04 cfs 0.097 af Runoff Area=0.100 ac 30.00% Impervious Runoff Depth=5.04"Subcatchment BLL_PR104: BLL_PR104 Tc=15.0 min CN=WQ Runoff=0.02 cfs 0.042 af Runoff Area=0.260 ac 23.08% Impervious Runoff Depth=4.85"Subcatchment BLL_PR105: BLL_PR105 Tc=15.0 min CN=WQ Runoff=0.04 cfs 0.105 af Runoff Area=0.080 ac 37.50% Impervious Runoff Depth=5.25"Subcatchment BLL_PR106: BLL_PR106 Tc=15.0 min CN=WQ Runoff=0.01 cfs 0.035 af Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 498HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=0.150 ac 20.00% Impervious Runoff Depth=4.74"Subcatchment BLL_PR107: BLL_PR107 Tc=15.0 min CN=WQ Runoff=0.02 cfs 0.059 af Runoff Area=0.160 ac 25.00% Impervious Runoff Depth=4.90"Subcatchment BLL_PR108: BLL_PR108 Tc=15.0 min CN=WQ Runoff=0.02 cfs 0.065 af Runoff Area=0.160 ac 18.75% Impervious Runoff Depth=4.73"Subcatchment BLL_PR109: BLL_PR109 Tc=15.0 min CN=WQ Runoff=0.02 cfs 0.063 af Runoff Area=0.360 ac 16.67% Impervious Runoff Depth=4.67"Subcatchment BLL_PR110: BLL_PR110 Tc=15.0 min CN=WQ Runoff=0.05 cfs 0.140 af Runoff Area=0.280 ac 17.86% Impervious Runoff Depth=4.71"Subcatchment BLL_PR111: BLL_PR111 Tc=15.0 min CN=WQ Runoff=0.04 cfs 0.110 af Runoff Area=0.520 ac 0.00% Impervious Runoff Depth=4.77"Subcatchment BLL_PR112: BLL_PR112 Tc=15.0 min CN=79 Runoff=0.08 cfs 0.207 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=3.79"Subcatchment BLL_PR113: BLL_PR113 Flow Length=180' Slope=0.0830 '/' Tc=20.5 min CN=70 Runoff=0.00 cfs 0.009 af Runoff Area=4.470 ac 55.48% Impervious Runoff Depth=5.74"Subcatchment BLL_PR201: BLL_PR201 Tc=15.0 min CN=WQ Runoff=0.74 cfs 2.138 af Runoff Area=0.920 ac 18.48% Impervious Runoff Depth=4.71"Subcatchment BLL_PR202: BLL_PR202 Tc=15.0 min CN=WQ Runoff=0.13 cfs 0.361 af Runoff Area=0.340 ac 26.47% Impervious Runoff Depth=4.93"Subcatchment BLL_PR203: BLL_PR203 Tc=15.0 min CN=WQ Runoff=0.05 cfs 0.140 af Runoff Area=1.400 ac 17.86% Impervious Runoff Depth=4.60"Subcatchment BLL_PR204: BLL_PR204 Tc=15.0 min CN=WQ Runoff=0.20 cfs 0.537 af Runoff Area=1.750 ac 12.57% Impervious Runoff Depth=4.44"Subcatchment BLL_PR205: BLL_PR205 Tc=15.0 min CN=WQ Runoff=0.24 cfs 0.647 af Runoff Area=0.310 ac 0.00% Impervious Runoff Depth=4.77"Subcatchment BLL_PR206: BLL_PR206 Tc=15.0 min CN=79 Runoff=0.05 cfs 0.123 af Runoff Area=9.030 ac 0.78% Impervious Runoff Depth=3.94"Subcatchment BLL_PR301: BLL_PR301 Flow Length=300' Slope=0.1500 '/' Tc=24.4 min CN=WQ Runoff=1.14 cfs 2.966 af Runoff Area=1.420 ac 7.04% Impervious Runoff Depth=4.11"Subcatchment BLL_PR302: BLL_PR302 Flow Length=570' Tc=36.5 min CN=WQ Runoff=0.18 cfs 0.486 af Runoff Area=0.230 ac 0.00% Impervious Runoff Depth=4.77"Subcatchment BLL_PR303: BLL_PR303 Flow Length=800' Tc=46.2 min CN=79 Runoff=0.03 cfs 0.091 af Runoff Area=2.850 ac 16.84% Impervious Runoff Depth=4.62"Subcatchment BLL_PR304: BLL_PR304 Flow Length=300' Slope=0.1660 '/' Tc=23.4 min CN=WQ Runoff=0.41 cfs 1.098 af Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 499HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=0.100 ac 0.00% Impervious Runoff Depth=4.22"Subcatchment BLL_PR401: BLL_PR401 Tc=15.0 min CN=74 Runoff=0.01 cfs 0.035 af Runoff Area=0.090 ac 55.56% Impervious Runoff Depth=5.74"Subcatchment BLL_PR402: BLL_PR402 Tc=15.0 min CN=WQ Runoff=0.01 cfs 0.043 af Runoff Area=0.110 ac 45.45% Impervious Runoff Depth=5.46"Subcatchment BLL_PR403: BLL_PR403 Tc=15.0 min CN=WQ Runoff=0.02 cfs 0.050 af Runoff Area=0.310 ac 0.00% Impervious Runoff Depth=4.22"Subcatchment BLL_PR501: BLL_PR501 Tc=15.0 min CN=74 Runoff=0.04 cfs 0.109 af Runoff Area=0.270 ac 62.96% Impervious Runoff Depth=5.94"Subcatchment BLL_PR502: BLL_PR502 Tc=15.0 min CN=WQ Runoff=0.05 cfs 0.134 af Runoff Area=0.010 ac 0.00% Impervious Runoff Depth=4.22"Subcatchment BLL_PR503: BLL_PR503 Tc=15.0 min CN=74 Runoff=0.00 cfs 0.004 af Runoff Area=1.030 ac 15.53% Impervious Runoff Depth=4.64"Subcatchment BLL_PR504: BLL_PR504 Tc=15.0 min CN=WQ Runoff=0.15 cfs 0.399 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=3.79"Subcatchment BLL_PR505: BLL_PR505 Flow Length=50' Slope=0.1200 '/' Tc=6.4 min CN=70 Runoff=0.00 cfs 0.009 af Runoff Area=1.110 ac 7.21% Impervious Runoff Depth=4.14"Subcatchment BLL_PR601: BLL_PR601 Flow Length=180' Slope=0.0667 '/' Tc=9.1 min CN=WQ Runoff=0.15 cfs 0.383 af Runoff Area=0.130 ac 38.46% Impervious Runoff Depth=5.27"Subcatchment BL_PR207: BLL_PR207 Tc=15.0 min CN=WQ Runoff=0.02 cfs 0.057 af Runoff Area=7.420 ac 0.00% Impervious Runoff Depth=4.66"Subcatchment LU 10-1: LU 10-1 Tc=6.0 min CN=78 Runoff=1.11 cfs 2.879 af Runoff Area=79.621 ac 0.00% Impervious Runoff Depth=4.44"Subcatchment LU 2-1: LU 2-1 Tc=52.0 min CN=76 Runoff=11.11 cfs 29.432 af Runoff Area=9.880 ac 0.00% Impervious Runoff Depth=4.11"Subcatchment LU 2-10: LU 2-10 Tc=6.0 min CN=73 Runoff=1.32 cfs 3.382 af Runoff Area=21.970 ac 0.00% Impervious Runoff Depth=4.33"Subcatchment LU 2-11: LU 2-11 Tc=12.0 min CN=75 Runoff=3.06 cfs 7.920 af Runoff Area=9.720 ac 0.00% Impervious Runoff Depth=4.00"Subcatchment LU 2-12: LU 2-12 Tc=6.0 min CN=72 Runoff=1.26 cfs 3.240 af Runoff Area=15.390 ac 0.00% Impervious Runoff Depth=4.00"Subcatchment LU 2-13: LU 2-13 Tc=7.0 min CN=72 Runoff=2.00 cfs 5.130 af Runoff Area=25.920 ac 0.00% Impervious Runoff Depth=3.89"Subcatchment LU 2-14: LU 2-14 Tc=12.0 min CN=71 Runoff=3.27 cfs 8.408 af Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 500HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=4.310 ac 0.00% Impervious Runoff Depth=4.00"Subcatchment LU 2-15: LU 2-15 Tc=4.0 min CN=72 Runoff=0.56 cfs 1.437 af Runoff Area=2.560 ac 0.00% Impervious Runoff Depth=4.22"Subcatchment LU 2-16: LU 2-16 Tc=4.0 min CN=74 Runoff=0.35 cfs 0.900 af Runoff Area=8.180 ac 0.00% Impervious Runoff Depth=4.55"Subcatchment LU 2-18: LU 2-18 Tc=7.0 min CN=77 Runoff=1.20 cfs 3.099 af Runoff Area=11.910 ac 0.00% Impervious Runoff Depth=4.22"Subcatchment LU 2-2: LU 2-2 Tc=7.0 min CN=74 Runoff=1.63 cfs 4.185 af Runoff Area=47.530 ac 0.00% Impervious Runoff Depth=4.11"Subcatchment LU 2-3: LU 2-3 Tc=17.0 min CN=73 Runoff=6.30 cfs 16.272 af Runoff Area=12.300 ac 0.00% Impervious Runoff Depth=4.77"Subcatchment LU 2-4: LU 2-4 Tc=8.0 min CN=79 Runoff=1.87 cfs 4.887 af Runoff Area=9.150 ac 0.00% Impervious Runoff Depth=4.66"Subcatchment LU 2-5: LU 2-5 Tc=7.0 min CN=78 Runoff=1.37 cfs 3.551 af Runoff Area=8.904 ac 0.00% Impervious Runoff Depth=4.55"Subcatchment LU 2-7: LU 2-7 Tc=7.0 min CN=77 Runoff=1.30 cfs 3.373 af Runoff Area=5.830 ac 0.00% Impervious Runoff Depth=4.11"Subcatchment LU 2-8: LU 2-8 Tc=5.0 min CN=73 Runoff=0.78 cfs 1.996 af Runoff Area=11.210 ac 0.00% Impervious Runoff Depth=3.89"Subcatchment LU 2-9: LU 2-9 Tc=7.0 min CN=71 Runoff=1.42 cfs 3.636 af Runoff Area=5.464 ac 5.19% Impervious Runoff Depth=4.23"Subcatchment W11S: W11 Flow Length=650' Slope=0.0380 '/' Tc=13.8 min CN=WQ Runoff=0.74 cfs 1.927 af Runoff Area=0.734 ac 6.42% Impervious Runoff Depth=4.22"Subcatchment W12S: W12 Flow Length=130' Slope=0.1200 '/' Tc=2.1 min CN=WQ Runoff=0.10 cfs 0.258 af Runoff Area=1.729 ac 6.61% Impervious Runoff Depth=4.34"Subcatchment W13S: W13 Flow Length=715' Slope=0.0900 '/' Tc=9.4 min CN=WQ Runoff=0.24 cfs 0.625 af Runoff Area=2.452 ac 13.89% Impervious Runoff Depth=4.48"Subcatchment W14S: W14 Flow Length=715' Slope=0.0900 '/' Tc=9.1 min CN=WQ Runoff=0.34 cfs 0.916 af Runoff Area=0.575 ac 7.12% Impervious Runoff Depth=4.19"Subcatchment W6S: W6 Flow Length=200' Slope=0.0800 '/' Tc=3.7 min CN=WQ Runoff=0.08 cfs 0.201 af Avg. Flow Depth=1.08' Max Vel=3.04 fps Inflow=6.99 cfs 37.319 afReach Pipe from W2 to W1: Pipe from 36.0" Round Pipe n=0.013 L=212.0' S=0.0014 '/' Capacity=25.09 cfs Outflow=6.99 cfs 37.317 af Peak Elev=967.59' Storage=481,546 cf Inflow=7.77 cfs 21.866 afPond 300P: Pond with IESF Primary=3.91 cfs 19.917 af Secondary=0.00 cfs 0.000 af Outflow=3.91 cfs 19.917 af Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 501HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=984.59' Storage=46,566 cf Inflow=0.76 cfs 2.148 afPond 400P: County pond with IESF Outflow=0.73 cfs 2.018 af Peak Elev=984.76' Inflow=0.76 cfs 1.865 afPond 490: CB inlet Primary=0.76 cfs 1.865 af Secondary=0.00 cfs 0.000 af Outflow=0.76 cfs 1.865 af Peak Elev=981.04' Inflow=0.00 cfs 0.000 afPond 491P: CB inlet Outflow=0.00 cfs 0.000 af Peak Elev=985.31' Storage=2,828 cf Inflow=0.27 cfs 0.737 afPond 500P: IESF Outflow=0.27 cfs 0.694 af Peak Elev=999.52' Storage=1,258 cf Inflow=0.07 cfs 0.406 afPond 600P: rain garden Discarded=0.01 cfs 0.140 af Primary=0.06 cfs 0.249 af Outflow=0.07 cfs 0.389 af Peak Elev=1,001.53' Storage=1,122 cf Inflow=0.15 cfs 0.409 afPond 800P: rain garden Discarded=0.01 cfs 0.126 af Primary=0.15 cfs 0.266 af Outflow=0.15 cfs 0.392 af Peak Elev=992.04' Storage=2,201 cf Inflow=0.19 cfs 0.523 afPond 900P: IESF Outflow=0.19 cfs 0.485 af Peak Elev=997.52' Storage=2 cf Inflow=0.13 cfs 0.361 afPond BLL_CB11: Bluffs at Lake Lucy CB 11 Primary=0.13 cfs 0.361 af Secondary=0.00 cfs 0.000 af Outflow=0.13 cfs 0.361 af Peak Elev=1,014.01' Storage=0 cf Inflow=0.02 cfs 0.057 afPond BLL_CB13A: Bluffs at Lake Lucy CB 13A Primary=0.02 cfs 0.057 af Secondary=0.00 cfs 0.000 af Outflow=0.02 cfs 0.057 af Peak Elev=978.51' Storage=0 cf Inflow=0.02 cfs 0.065 afPond BLL_CB22: Bluffs at Lake Lucy CB 22 Primary=0.02 cfs 0.065 af Secondary=0.00 cfs 0.000 af Outflow=0.02 cfs 0.065 af Peak Elev=978.51' Storage=0 cf Inflow=0.02 cfs 0.063 afPond BLL_CB23: Bluffs at Lake Lucy CB 23 Primary=0.02 cfs 0.063 af Secondary=0.00 cfs 0.000 af Outflow=0.02 cfs 0.063 af Peak Elev=979.01' Storage=0 cf Inflow=0.02 cfs 0.059 afPond BLL_CB24: Bluffs at Lake Lucy CB 24 Primary=0.02 cfs 0.059 af Secondary=0.00 cfs 0.000 af Outflow=0.02 cfs 0.059 af Peak Elev=981.01' Storage=0 cf Inflow=0.01 cfs 0.035 afPond BLL_CB25: Bluffs at Lake Lucy CB 25 Primary=0.01 cfs 0.035 af Secondary=0.00 cfs 0.000 af Outflow=0.01 cfs 0.035 af Peak Elev=983.01' Storage=1 cf Inflow=0.04 cfs 0.105 afPond BLL_CB26: Bluffs at Lake Lucy CB 26 Primary=0.04 cfs 0.105 af Secondary=0.00 cfs 0.000 af Outflow=0.04 cfs 0.105 af Peak Elev=986.02' Storage=1 cf Inflow=0.05 cfs 0.140 afPond BLL_CB27: Bluffs at Lake Lucy CB 27 Primary=0.05 cfs 0.140 af Secondary=0.00 cfs 0.000 af Outflow=0.05 cfs 0.140 af Peak Elev=995.01' Storage=1 cf Inflow=0.04 cfs 0.110 afPond BLL_CB28: Bluffs at Lake Lucy CB 28 Primary=0.04 cfs 0.110 af Secondary=0.00 cfs 0.000 af Outflow=0.04 cfs 0.110 af Peak Elev=1,000.01' Storage=1 cf Inflow=0.04 cfs 0.097 afPond BLL_CB30: Bluffs at Lake Lucy CB 30 Primary=0.04 cfs 0.097 af Secondary=0.00 cfs 0.000 af Outflow=0.04 cfs 0.097 af Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 502HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=1,004.04' Storage=2 cf Inflow=0.18 cfs 0.476 afPond BLL_CB37: Bluffs at Lake Lucy CB 37 Primary=0.18 cfs 0.476 af Secondary=0.00 cfs 0.000 af Outflow=0.18 cfs 0.476 af Peak Elev=1,010.04' Storage=2 cf Inflow=0.20 cfs 0.537 afPond BLL_CB9: Bluffs at Lake Lucy CB 9 Primary=0.20 cfs 0.537 af Secondary=0.00 cfs 0.000 af Outflow=0.20 cfs 0.537 af Peak Elev=973.82' Storage=108,588 cf Inflow=1.55 cfs 4.342 afPond BLL_Pond1: Bluffs at Lake Lucy Primary=1.22 cfs 4.306 af Secondary=0.00 cfs 0.000 af Outflow=1.22 cfs 4.306 af Peak Elev=965.56' Storage=61,312 cf Inflow=1.44 cfs 4.003 afPond BLL_Pond2: Bluffs at Lake Lucy Discarded=0.24 cfs 3.726 af Primary=0.02 cfs 0.035 af Secondary=0.00 cfs 0.000 af Outflow=0.26 cfs 3.761 af Peak Elev=988.36' Inflow=1.54 cfs 4.253 afPond CB-9: EX CB-9 24.0" Round Culvert n=0.025 L=94.0' S=0.0755 '/' Outflow=1.54 cfs 4.253 af Peak Elev=997.01' Storage=0 cf Inflow=0.02 cfs 0.042 afPond GB_CB27: Bluffs at Lake Lucy CB 29 Primary=0.02 cfs 0.042 af Secondary=0.00 cfs 0.000 af Outflow=0.02 cfs 0.042 af Inflow=23.92 cfs 110.330 afPond LUCY: LAKE LUCY Primary=23.92 cfs 110.330 af Peak Elev=957.56' Storage=158,665 cf Inflow=25.13 cfs 98.109 afPond P-LU 2-1: P-LU 2-1 Outflow=23.01 cfs 107.724 af Peak Elev=972.61' Storage=0.207 af Inflow=1.32 cfs 3.382 afPond P-LU 2-10: P-LU 2-10 Outflow=1.30 cfs 3.216 af Peak Elev=972.95' Storage=11.086 af Inflow=8.33 cfs 23.148 afPond P-LU 2-11: P-LU 2-11 15.0" Round Culvert n=0.011 L=114.0' S=0.0004 '/' Outflow=1.68 cfs 13.900 af Peak Elev=978.41' Storage=1.134 af Inflow=1.26 cfs 3.240 afPond P-LU 2-12: P-LU 2-12 Primary=0.85 cfs 2.209 af Secondary=0.00 cfs 0.000 af Outflow=0.85 cfs 2.209 af Peak Elev=990.18' Storage=0.654 af Inflow=2.00 cfs 5.130 afPond P-LU 2-13: P-LU 2-13 24.0" Round Culvert n=0.011 L=110.0' S=0.0600 '/' Outflow=1.93 cfs 4.611 af Peak Elev=970.56' Storage=0.219 af Inflow=3.48 cfs 24.774 afPond P-LU 2-2: P-LU 2-2 Primary=2.99 cfs 24.767 af Secondary=0.00 cfs 0.000 af Outflow=2.99 cfs 24.767 af Peak Elev=993.84' Storage=17.904 af Inflow=7.04 cfs 17.904 afPond P-LU 2-3: P-LU 2-3 (LAKE Outflow=0.00 cfs 0.000 af Peak Elev=974.63' Storage=0.413 af Inflow=2.11 cfs 5.541 afPond P-LU 2-4: P-LU 2-4 Primary=2.08 cfs 5.218 af Secondary=0.00 cfs 0.000 af Outflow=2.08 cfs 5.218 af Peak Elev=965.34' Storage=0.665 af Inflow=1.37 cfs 3.551 afPond P-LU 2-5: P-LU 2-5 Outflow=1.16 cfs 3.568 af Peak Elev=982.27' Storage=387,356 cf Inflow=3.26 cfs 8.893 afPond P-LU 2-6: Wetland 11 15.0" Round Culvert n=0.013 L=50.0' S=0.0104 '/' Outflow=0.00 cfs 0.000 af Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 503HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=995.86' Storage=23,138 cf Inflow=1.30 cfs 3.373 afPond P-LU 2-7: P-LU 2-7 12.0" Round Culvert n=0.013 L=60.8' S=0.0197 '/' Outflow=1.25 cfs 3.366 af Peak Elev=996.44' Storage=0.425 af Inflow=0.78 cfs 1.996 afPond P-LU 2-8: P-LU 2-8 Primary=0.75 cfs 1.632 af Secondary=0.00 cfs 0.000 af Outflow=0.75 cfs 1.632 af Peak Elev=977.26' Storage=2.219 af Inflow=1.42 cfs 3.636 afPond P-LU 2-9: P-LU 2-9 Outflow=0.21 cfs 1.587 af Peak Elev=994.34' Storage=4,364 cf Inflow=0.35 cfs 0.900 afPond P-LU-2-16: P-LU-2-16 12.0" Round Culvert n=0.013 L=93.0' S=0.0669 '/' Outflow=0.30 cfs 0.887 af Peak Elev=963.65' Storage=0.496 af Inflow=1.15 cfs 3.008 afPond P-LU10-1: P-LU 10-1 Primary=1.11 cfs 2.607 af Secondary=0.00 cfs 0.000 af Outflow=1.11 cfs 2.607 af Peak Elev=994.14' Storage=0.095 af Inflow=0.10 cfs 0.258 afPond W12: Wetland 12 15.0" Round Culvert n=0.013 L=45.0' S=0.0040 '/' Outflow=0.06 cfs 0.176 af Peak Elev=993.04' Storage=5,986 cf Inflow=0.24 cfs 0.625 afPond W13: Wetland 13 Outflow=0.23 cfs 0.498 af Peak Elev=987.12' Storage=1,955 cf Inflow=0.76 cfs 1.899 afPond W14: Wetland 14 Outflow=0.76 cfs 1.865 af Peak Elev=970.53' Storage=8,179 cf Inflow=6.39 cfs 33.467 afPond W2: Wetland 2 Primary=5.77 cfs 33.013 af Secondary=0.24 cfs 0.449 af Outflow=5.77 cfs 33.462 af Peak Elev=1,001.01' Storage=11,212 cf Inflow=0.22 cfs 0.466 afPond W6: Wetland 6 Outflow=0.05 cfs 0.210 af Total Runoff Area = 401.189 ac Runoff Volume = 148.595 af Average Runoff Depth = 4.44" 92.11% Pervious = 369.521 ac 7.89% Impervious = 31.668 ac Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 504HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 300S: 300 Runoff = 6.17 cfs @ 121.42 hrs, Volume= 17.527 af, Depth= 5.45" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.755 70 Woods Good, HSG C * 0.637 71 Meadow, HSG C * 19.586 74 75% Grass cover Good, HSG C * 17.584 98 Impervious, HSG C 38.561 Weighted Average 20.977 54.40% Pervious Area 17.584 45.60% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.7 1,575 0.0350 1.27 Lag/CN Method, Subcatchment 300S: 300 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)6 5 4 3 2 1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=38.561 ac Runoff Volume=17.527 af Runoff Depth=5.45" Flow Length=1,575' Slope=0.0350 '/' Tc=20.7 min CN=WQ 6.17 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 505HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 301S: 301 Runoff = 0.84 cfs @ 121.23 hrs, Volume= 2.298 af, Depth= 4.92" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.991 98 Water Surface, HSG C * 1.761 71 Meadow, HSG C * 2.200 74 75% Grass cover Good, HSG C * 0.654 98 Impervious, HSG C 5.606 Weighted Average 3.961 70.67% Pervious Area 1.644 29.33% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.5 275 0.1030 1.30 Lag/CN Method, Subcatchment 301S: 301 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.9 0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=5.606 ac Runoff Volume=2.298 af Runoff Depth=4.92" Flow Length=275' Slope=0.1030 '/' Tc=3.5 min CN=WQ 0.84 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 506HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 400S: Proposed CR 117 Runoff = 0.39 cfs @ 121.40 hrs, Volume= 1.162 af, Depth= 6.34" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description 1.700 98 Paved roads w/curbs & sewers, HSG C 0.500 74 >75% Grass cover, Good, HSG C 2.200 Weighted Average 0.500 22.73% Pervious Area 1.700 77.27% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.0 Direct Entry, Subcatchment 400S: Proposed CR 117 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=2.200 ac Runoff Volume=1.162 af Runoff Depth=6.34" Tc=20.0 min CN=WQ 0.39 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 507HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 401S: 401 Runoff = 0.37 cfs @ 121.29 hrs, Volume= 0.986 af, Depth= 4.55" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.243 70 Woods Good, HSG C * 0.186 98 Water Surface, HSG C * 0.897 71 Meadow, HSG C * 0.997 74 75% Grass cover Good, HSG C * 0.276 98 Impervious, HSG C 2.600 Weighted Average 2.138 82.21% Pervious Area 0.462 17.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.9 500 0.0500 0.93 Lag/CN Method, Subcatchment 401S: 401 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=2.600 ac Runoff Volume=0.986 af Runoff Depth=4.55" Flow Length=500' Slope=0.0500 '/' Tc=8.9 min CN=WQ 0.37 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 508HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 500S: 500 Runoff = 0.27 cfs @ 121.29 hrs, Volume= 0.737 af, Depth= 5.01" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.097 71 Meadow, HSG C * 1.149 74 75% Grass cover Good, HSG C * 0.520 98 Impervious, HSG C 1.766 Weighted Average 1.246 70.56% Pervious Area 0.520 29.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.0 510 0.0400 0.95 Lag/CN Method, Subcatchment 500S: 500 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=1.766 ac Runoff Volume=0.737 af Runoff Depth=5.01" Flow Length=510' Slope=0.0400 '/' Tc=9.0 min CN=WQ 0.27 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 509HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 600S: 600 Runoff = 0.07 cfs @ 121.32 hrs, Volume= 0.196 af, Depth= 4.44" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.066 70 Woods Good, HSG C * 0.221 71 Meadow, HSG C * 0.163 74 75% Grass cover Good, HSG C * 0.079 98 Impervious, HSG C 0.529 Weighted Average 0.450 85.12% Pervious Area 0.079 14.88% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.2 495 0.0400 0.81 Lag/CN Method, Subcatchment 600S: 600 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.529 ac Runoff Volume=0.196 af Runoff Depth=4.44" Flow Length=495' Slope=0.0400 '/' Tc=10.2 min CN=WQ 0.07 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 510HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 700S: 700 Runoff = 1.06 cfs @ 121.28 hrs, Volume= 2.712 af, Depth= 3.92" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 2.897 70 Woods Good, HSG C * 4.268 71 Meadow, HSG C * 1.101 74 75% Grass cover Good, HSG C * 0.047 98 Impervious, HSG C 8.313 Weighted Average 8.266 99.44% Pervious Area 0.047 0.56% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.9 500 0.0900 1.05 Lag/CN Method, Subcatchment 700S: 700 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=8.313 ac Runoff Volume=2.712 af Runoff Depth=3.92" Flow Length=500' Slope=0.0900 '/' Tc=7.9 min CN=WQ 1.06 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 511HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 701S: 701 Runoff = 0.09 cfs @ 121.26 hrs, Volume= 0.238 af, Depth= 4.48" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.380 71 Meadow, HSG C * 0.149 74 75% Grass cover Good, HSG C * 0.107 98 Impervious, HSG C 0.636 Weighted Average 0.529 83.23% Pervious Area 0.107 16.77% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 255 0.0400 0.71 Lag/CN Method, Subcatchment 701S: 701 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.095 0.09 0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.636 ac Runoff Volume=0.238 af Runoff Depth=4.48" Flow Length=255' Slope=0.0400 '/' Tc=6.0 min CN=WQ 0.09 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 512HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 800S: 800 Runoff = 0.15 cfs @ 121.29 hrs, Volume= 0.409 af, Depth= 4.49" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.484 71 Meadow, HSG C * 0.443 74 75% Grass cover Good, HSG C * 0.167 98 Impervious, HSG C 1.094 Weighted Average 0.927 84.77% Pervious Area 0.167 15.23% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.8 355 0.0400 0.76 Lag/CN Method, Subcatchment 800S: 800 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=1.094 ac Runoff Volume=0.409 af Runoff Depth=4.49" Flow Length=355' Slope=0.0400 '/' Tc=7.8 min CN=WQ 0.15 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 513HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 900S: 900 Runoff = 0.19 cfs @ 121.29 hrs, Volume= 0.523 af, Depth= 5.17" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.000 70 Woods Good, HSG C * 0.794 74 75% Grass cover Good, HSG C * 0.421 98 Impervious, HSG C 1.215 Weighted Average 0.794 65.34% Pervious Area 0.421 34.66% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 470 0.0300 0.83 Lag/CN Method, Subcatchment 900S: 900 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=1.215 ac Runoff Volume=0.523 af Runoff Depth=5.17" Flow Length=470' Slope=0.0300 '/' Tc=9.4 min CN=WQ 0.19 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 514HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR101: BLL_PR101 Runoff = 1.11 cfs @ 121.35 hrs, Volume= 3.140 af, Depth= 5.45" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.030 98 Existing County Road * 2.490 98 Proposed homes and road * 2.870 74 Proposed lawn * 0.560 98 Pond * 0.150 98 Proposed sidewalk * 0.010 98 Proposed trail 0.800 70 Woods, Good, HSG C 6.910 Weighted Average 3.670 53.11% Pervious Area 3.240 46.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR101: BLL_PR101 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=6.910 ac Runoff Volume=3.140 af Runoff Depth=5.45" Tc=15.0 min CN=WQ 1.11 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 515HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR102: BLL_PR102 Runoff = 0.10 cfs @ 121.38 hrs, Volume= 0.269 af, Depth= 4.36" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.080 98 Proposed homes and road * 0.400 74 Proposed lawn 0.260 70 Woods, Good, HSG C 0.740 Weighted Average 0.660 89.19% Pervious Area 0.080 10.81% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR102: BLL_PR102 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.11 0.105 0.1 0.095 0.09 0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.740 ac Runoff Volume=0.269 af Runoff Depth=4.36" Tc=15.0 min CN=WQ 0.10 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 516HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR103: BLL_PR103 Runoff = 0.04 cfs @ 121.38 hrs, Volume= 0.097 af, Depth= 4.64" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.040 98 Proposed homes and road * 0.200 74 Proposed lawn 0.010 70 Woods, Good, HSG C 0.250 Weighted Average 0.210 84.00% Pervious Area 0.040 16.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR103: BLL_PR103 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.04 0.038 0.036 0.034 0.032 0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.250 ac Runoff Volume=0.097 af Runoff Depth=4.64" Tc=15.0 min CN=WQ 0.04 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 517HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR104: BLL_PR104 Runoff = 0.02 cfs @ 121.35 hrs, Volume= 0.042 af, Depth= 5.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.030 98 Proposed homes and road * 0.070 74 Proposed lawn 0.100 Weighted Average 0.070 70.00% Pervious Area 0.030 30.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR104: BLL_PR104 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.017 0.016 0.015 0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.100 ac Runoff Volume=0.042 af Runoff Depth=5.04" Tc=15.0 min CN=WQ 0.02 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 518HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR105: BLL_PR105 Runoff = 0.04 cfs @ 121.38 hrs, Volume= 0.105 af, Depth= 4.85" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.060 98 Proposed homes and road * 0.200 74 Proposed lawn 0.260 Weighted Average 0.200 76.92% Pervious Area 0.060 23.08% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR105: BLL_PR105 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.042 0.04 0.038 0.036 0.034 0.032 0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.260 ac Runoff Volume=0.105 af Runoff Depth=4.85" Tc=15.0 min CN=WQ 0.04 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 519HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR106: BLL_PR106 Runoff = 0.01 cfs @ 121.35 hrs, Volume= 0.035 af, Depth= 5.25" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.030 98 Proposed homes and road * 0.050 74 Proposed lawn 0.080 Weighted Average 0.050 62.50% Pervious Area 0.030 37.50% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR106: BLL_PR106 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.080 ac Runoff Volume=0.035 af Runoff Depth=5.25" Tc=15.0 min CN=WQ 0.01 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 520HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR107: BLL_PR107 Runoff = 0.02 cfs @ 121.38 hrs, Volume= 0.059 af, Depth= 4.74" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.030 98 Proposed homes and road * 0.110 74 Proposed lawn 0.010 70 Woods, Good, HSG C 0.150 Weighted Average 0.120 80.00% Pervious Area 0.030 20.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR107: BLL_PR107 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.024 0.023 0.022 0.021 0.02 0.019 0.018 0.017 0.016 0.015 0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.150 ac Runoff Volume=0.059 af Runoff Depth=4.74" Tc=15.0 min CN=WQ 0.02 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 521HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR108: BLL_PR108 Runoff = 0.02 cfs @ 121.38 hrs, Volume= 0.065 af, Depth= 4.90" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.040 98 Proposed homes and road * 0.120 74 Proposed lawn 0.160 Weighted Average 0.120 75.00% Pervious Area 0.040 25.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR108: BLL_PR108 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.160 ac Runoff Volume=0.065 af Runoff Depth=4.90" Tc=15.0 min CN=WQ 0.02 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 522HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR109: BLL_PR109 Runoff = 0.02 cfs @ 121.38 hrs, Volume= 0.063 af, Depth= 4.73" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.030 98 Proposed homes and road * 0.130 74 Proposed lawn 0.160 Weighted Average 0.130 81.25% Pervious Area 0.030 18.75% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR109: BLL_PR109 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.026 0.025 0.024 0.023 0.022 0.021 0.02 0.019 0.018 0.017 0.016 0.015 0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.160 ac Runoff Volume=0.063 af Runoff Depth=4.73" Tc=15.0 min CN=WQ 0.02 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 523HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR110: BLL_PR110 Runoff = 0.05 cfs @ 121.38 hrs, Volume= 0.140 af, Depth= 4.67" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.060 98 Proposed homes and road * 0.300 74 Proposed lawn 0.360 Weighted Average 0.300 83.33% Pervious Area 0.060 16.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR110: BLL_PR110 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.360 ac Runoff Volume=0.140 af Runoff Depth=4.67" Tc=15.0 min CN=WQ 0.05 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 524HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR111: BLL_PR111 Runoff = 0.04 cfs @ 121.38 hrs, Volume= 0.110 af, Depth= 4.71" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.050 98 Proposed homes and road * 0.230 74 Proposed lawn 0.280 Weighted Average 0.230 82.14% Pervious Area 0.050 17.86% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR111: BLL_PR111 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.044 0.042 0.04 0.038 0.036 0.034 0.032 0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.280 ac Runoff Volume=0.110 af Runoff Depth=4.71" Tc=15.0 min CN=WQ 0.04 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 525HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR112: BLL_PR112 Runoff = 0.08 cfs @ 121.38 hrs, Volume= 0.207 af, Depth= 4.77" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.520 79 CN from Previous Model 0.520 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR112: BLL_PR112 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.520 ac Runoff Volume=0.207 af Runoff Depth=4.77" Tc=15.0 min CN=79 0.08 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 526HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR113: BLL_PR113 Runoff = 0.00 cfs @ 121.47 hrs, Volume= 0.009 af, Depth= 3.79" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description 0.030 70 Woods, Good, HSG C 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.5 180 0.0830 0.15 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_PR113: BLL_PR113 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.004 0.004 0.004 0.003 0.003 0.003 0.003 0.003 0.002 0.002 0.002 0.002 0.002 0.001 0.001 0.001 0.001 0.001 0.000 0.000 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.030 ac Runoff Volume=0.009 af Runoff Depth=3.79" Flow Length=180' Slope=0.0830 '/' Tc=20.5 min CN=70 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 527HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR201: BLL_PR201 Runoff = 0.74 cfs @ 121.35 hrs, Volume= 2.138 af, Depth= 5.74" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 1.830 98 Proposed homes and road * 1.990 74 Proposed lawn * 0.570 98 Pond * 0.040 98 Proposed sidewalk * 0.040 98 Proposed trail 4.470 Weighted Average 1.990 44.52% Pervious Area 2.480 55.48% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR201: BLL_PR201 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=4.470 ac Runoff Volume=2.138 af Runoff Depth=5.74" Tc=15.0 min CN=WQ 0.74 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 528HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR202: BLL_PR202 Runoff = 0.13 cfs @ 121.38 hrs, Volume= 0.361 af, Depth= 4.71" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.170 98 Proposed homes and road * 0.730 74 Proposed lawn 0.020 70 Woods, Good, HSG C 0.920 Weighted Average 0.750 81.52% Pervious Area 0.170 18.48% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR202: BLL_PR202 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.920 ac Runoff Volume=0.361 af Runoff Depth=4.71" Tc=15.0 min CN=WQ 0.13 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 529HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR203: BLL_PR203 Runoff = 0.05 cfs @ 121.38 hrs, Volume= 0.140 af, Depth= 4.93" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.090 98 Proposed homes and road * 0.240 74 Proposed lawn 0.010 70 Woods, Good, HSG C 0.340 Weighted Average 0.250 73.53% Pervious Area 0.090 26.47% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR203: BLL_PR203 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.340 ac Runoff Volume=0.140 af Runoff Depth=4.93" Tc=15.0 min CN=WQ 0.05 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 530HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR204: BLL_PR204 Runoff = 0.20 cfs @ 121.38 hrs, Volume= 0.537 af, Depth= 4.60" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.250 98 Proposed homes and road * 0.810 74 Proposed lawn 0.340 70 Woods, Good, HSG C 1.400 Weighted Average 1.150 82.14% Pervious Area 0.250 17.86% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR204: BLL_PR204 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.22 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=1.400 ac Runoff Volume=0.537 af Runoff Depth=4.60" Tc=15.0 min CN=WQ 0.20 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 531HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR205: BLL_PR205 Runoff = 0.24 cfs @ 121.38 hrs, Volume= 0.647 af, Depth= 4.44" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.110 98 Proposed homes and road * 1.030 74 Proposed lawn * 0.110 98 Proposed trail 0.500 70 Woods, Good, HSG C 1.750 Weighted Average 1.530 87.43% Pervious Area 0.220 12.57% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR205: BLL_PR205 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=1.750 ac Runoff Volume=0.647 af Runoff Depth=4.44" Tc=15.0 min CN=WQ 0.24 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 532HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR206: BLL_PR206 Runoff = 0.05 cfs @ 121.38 hrs, Volume= 0.123 af, Depth= 4.77" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.310 79 CN from Previous Model 0.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR206: BLL_PR206 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.052 0.05 0.048 0.046 0.044 0.042 0.04 0.038 0.036 0.034 0.032 0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.310 ac Runoff Volume=0.123 af Runoff Depth=4.77" Tc=15.0 min CN=79 0.05 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 533HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR301: BLL_PR301 Runoff = 1.14 cfs @ 121.49 hrs, Volume= 2.966 af, Depth= 3.94" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 2.760 74 Proposed lawn * 0.070 98 Proposed trail 6.200 70 Woods, Good, HSG C 9.030 Weighted Average 8.960 99.22% Pervious Area 0.070 0.78% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 24.4 300 0.1500 0.20 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_PR301: BLL_PR301 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=9.030 ac Runoff Volume=2.966 af Runoff Depth=3.94" Flow Length=300' Slope=0.1500 '/' Tc=24.4 min CN=WQ 1.14 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 534HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR302: BLL_PR302 Runoff = 0.18 cfs @ 121.63 hrs, Volume= 0.486 af, Depth= 4.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.040 98 Proposed homes and road * 0.320 74 Proposed lawn * 0.060 98 Proposed trail 1.000 70 Woods, Good, HSG C 1.420 Weighted Average 1.320 92.96% Pervious Area 0.100 7.04% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 33.9 300 0.0660 0.15 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" 2.6 270 0.1190 1.72 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 36.5 570 Total Subcatchment BLL_PR302: BLL_PR302 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=1.420 ac Runoff Volume=0.486 af Runoff Depth=4.11" Flow Length=570' Tc=36.5 min CN=WQ 0.18 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 535HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR303: BLL_PR303 Runoff = 0.03 cfs @ 121.71 hrs, Volume= 0.091 af, Depth= 4.77" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.230 79 CN from Previous Model 0.230 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 41.4 300 0.0400 0.12 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" 4.8 500 0.1190 1.72 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 46.2 800 Total Subcatchment BLL_PR303: BLL_PR303 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.038 0.036 0.034 0.032 0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.230 ac Runoff Volume=0.091 af Runoff Depth=4.77" Flow Length=800' Tc=46.2 min CN=79 0.03 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 536HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR304: BLL_PR304 Runoff = 0.41 cfs @ 121.50 hrs, Volume= 1.098 af, Depth= 4.62" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.080 98 Existing County Road * 0.400 98 Existing homes * 2.000 74 Existing lawn 0.370 70 Woods, Good, HSG C 2.850 Weighted Average 2.370 83.16% Pervious Area 0.480 16.84% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 23.4 300 0.1660 0.21 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_PR304: BLL_PR304 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=2.850 ac Runoff Volume=1.098 af Runoff Depth=4.62" Flow Length=300' Slope=0.1660 '/' Tc=23.4 min CN=WQ 0.41 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 537HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR401: BLL_PR401 Runoff = 0.01 cfs @ 121.38 hrs, Volume= 0.035 af, Depth= 4.22" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.100 74 Existing lawn 0.100 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR401: BLL_PR401 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.015 0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.100 ac Runoff Volume=0.035 af Runoff Depth=4.22" Tc=15.0 min CN=74 0.01 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 538HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR402: BLL_PR402 Runoff = 0.01 cfs @ 121.35 hrs, Volume= 0.043 af, Depth= 5.74" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.030 98 Existing road * 0.020 98 Proposed homes and road * 0.040 74 Proposed lawn 0.090 Weighted Average 0.040 44.44% Pervious Area 0.050 55.56% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR402: BLL_PR402 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.016 0.015 0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.090 ac Runoff Volume=0.043 af Runoff Depth=5.74" Tc=15.0 min CN=WQ 0.01 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 539HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR403: BLL_PR403 Runoff = 0.02 cfs @ 121.35 hrs, Volume= 0.050 af, Depth= 5.46" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.040 98 Proposed homes and road * 0.060 74 Proposed lawn * 0.010 98 Proposed sidewalk 0.110 Weighted Average 0.060 54.55% Pervious Area 0.050 45.45% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR403: BLL_PR403 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.019 0.018 0.017 0.016 0.015 0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.110 ac Runoff Volume=0.050 af Runoff Depth=5.46" Tc=15.0 min CN=WQ 0.02 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 540HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR501: BLL_PR501 Runoff = 0.04 cfs @ 121.38 hrs, Volume= 0.109 af, Depth= 4.22" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.310 74 Proposed lawn 0.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR501: BLL_PR501 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.046 0.044 0.042 0.04 0.038 0.036 0.034 0.032 0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.310 ac Runoff Volume=0.109 af Runoff Depth=4.22" Tc=15.0 min CN=74 0.04 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 541HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR502: BLL_PR502 Runoff = 0.05 cfs @ 121.35 hrs, Volume= 0.134 af, Depth= 5.94" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.100 74 Existing lawn * 0.170 98 Existing road and sidewalk 0.270 Weighted Average 0.100 37.04% Pervious Area 0.170 62.96% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR502: BLL_PR502 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.05 0.048 0.046 0.044 0.042 0.04 0.038 0.036 0.034 0.032 0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.270 ac Runoff Volume=0.134 af Runoff Depth=5.94" Tc=15.0 min CN=WQ 0.05 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 542HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR503: BLL_PR503 Runoff = 0.00 cfs @ 121.38 hrs, Volume= 0.004 af, Depth= 4.22" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.010 74 Proposed lawn 0.010 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR503: BLL_PR503 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.002 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.000 0.000 0.000 0.000 0 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.010 ac Runoff Volume=0.004 af Runoff Depth=4.22" Tc=15.0 min CN=74 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 543HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR504: BLL_PR504 Runoff = 0.15 cfs @ 121.38 hrs, Volume= 0.399 af, Depth= 4.64" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.160 98 Existing homes * 0.870 74 Existing lawn 1.030 Weighted Average 0.870 84.47% Pervious Area 0.160 15.53% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_PR504: BLL_PR504 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=1.030 ac Runoff Volume=0.399 af Runoff Depth=4.64" Tc=15.0 min CN=WQ 0.15 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 544HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR505: BLL_PR505 Runoff = 0.00 cfs @ 121.27 hrs, Volume= 0.009 af, Depth= 3.79" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description 0.030 70 Woods, Good, HSG C 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.4 50 0.1200 0.13 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_PR505: BLL_PR505 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.004 0.004 0.004 0.003 0.003 0.003 0.003 0.003 0.002 0.002 0.002 0.002 0.002 0.001 0.001 0.001 0.001 0.001 0.000 0.000 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.030 ac Runoff Volume=0.009 af Runoff Depth=3.79" Flow Length=50' Slope=0.1200 '/' Tc=6.4 min CN=70 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 545HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_PR601: BLL_PR601 Runoff = 0.15 cfs @ 121.30 hrs, Volume= 0.383 af, Depth= 4.14" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.080 98 Existing County Road * 0.150 74 Proposed lawn * 0.180 74 wetland 0.700 70 Woods, Good, HSG C 1.110 Weighted Average 1.030 92.79% Pervious Area 0.080 7.21% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.1 180 0.0667 0.33 Sheet Flow, Range n= 0.130 P2= 2.87" Subcatchment BLL_PR601: BLL_PR601 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=1.110 ac Runoff Volume=0.383 af Runoff Depth=4.14" Flow Length=180' Slope=0.0667 '/' Tc=9.1 min CN=WQ 0.15 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 546HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BL_PR207: BLL_PR207 Runoff = 0.02 cfs @ 121.35 hrs, Volume= 0.057 af, Depth= 5.27" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.050 98 Proposed homes and road * 0.080 74 Proposed lawn 0.130 Weighted Average 0.080 61.54% Pervious Area 0.050 38.46% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BL_PR207: BLL_PR207 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.022 0.021 0.02 0.019 0.018 0.017 0.016 0.015 0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.130 ac Runoff Volume=0.057 af Runoff Depth=5.27" Tc=15.0 min CN=WQ 0.02 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 547HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 10-1: LU 10-1 Runoff = 1.11 cfs @ 121.26 hrs, Volume= 2.879 af, Depth= 4.66" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 7.420 78 7.420 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 10-1: LU 10-1 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=7.420 ac Runoff Volume=2.879 af Runoff Depth=4.66" Tc=6.0 min CN=78 1.11 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 548HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-1: LU 2-1 Runoff = 11.11 cfs @ 121.85 hrs, Volume= 29.432 af, Depth= 4.44" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 79.621 76 79.621 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 52.0 Direct Entry, Subcatchment LU 2-1: LU 2-1 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=79.621 ac Runoff Volume=29.432 af Runoff Depth=4.44" Tc=52.0 min CN=76 11.11 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 549HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-10: LU 2-10 Runoff = 1.32 cfs @ 121.26 hrs, Volume= 3.382 af, Depth= 4.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 9.880 73 9.880 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 2-10: LU 2-10 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=9.880 ac Runoff Volume=3.382 af Runoff Depth=4.11" Tc=6.0 min CN=73 1.32 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 550HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-11: LU 2-11 Runoff = 3.06 cfs @ 121.35 hrs, Volume= 7.920 af, Depth= 4.33" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 21.970 75 21.970 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment LU 2-11: LU 2-11 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=21.970 ac Runoff Volume=7.920 af Runoff Depth=4.33" Tc=12.0 min CN=75 3.06 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 551HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-12: LU 2-12 Runoff = 1.26 cfs @ 121.26 hrs, Volume= 3.240 af, Depth= 4.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 9.720 72 9.720 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 2-12: LU 2-12 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=9.720 ac Runoff Volume=3.240 af Runoff Depth=4.00" Tc=6.0 min CN=72 1.26 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 552HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-13: LU 2-13 Runoff = 2.00 cfs @ 121.28 hrs, Volume= 5.130 af, Depth= 4.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 15.390 72 15.390 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-13: LU 2-13 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=15.390 ac Runoff Volume=5.130 af Runoff Depth=4.00" Tc=7.0 min CN=72 2.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 553HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-14: LU 2-14 Runoff = 3.27 cfs @ 121.35 hrs, Volume= 8.408 af, Depth= 3.89" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 25.920 71 25.920 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment LU 2-14: LU 2-14 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=25.920 ac Runoff Volume=8.408 af Runoff Depth=3.89" Tc=12.0 min CN=71 3.27 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 554HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-15: LU 2-15 Runoff = 0.56 cfs @ 121.24 hrs, Volume= 1.437 af, Depth= 4.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 4.310 72 4.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Subcatchment LU 2-15: LU 2-15 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=4.310 ac Runoff Volume=1.437 af Runoff Depth=4.00" Tc=4.0 min CN=72 0.56 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 555HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-16: LU 2-16 Runoff = 0.35 cfs @ 121.24 hrs, Volume= 0.900 af, Depth= 4.22" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 2.560 74 2.560 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Subcatchment LU 2-16: LU 2-16 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=2.560 ac Runoff Volume=0.900 af Runoff Depth=4.22" Tc=4.0 min CN=74 0.35 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 556HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-18: LU 2-18 Runoff = 1.20 cfs @ 121.28 hrs, Volume= 3.099 af, Depth= 4.55" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 8.180 77 8.180 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-18: LU 2-18 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=8.180 ac Runoff Volume=3.099 af Runoff Depth=4.55" Tc=7.0 min CN=77 1.20 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 557HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-2: LU 2-2 Runoff = 1.63 cfs @ 121.28 hrs, Volume= 4.185 af, Depth= 4.22" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 11.910 74 11.910 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-2: LU 2-2 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=11.910 ac Runoff Volume=4.185 af Runoff Depth=4.22" Tc=7.0 min CN=74 1.63 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 558HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-3: LU 2-3 Runoff = 6.30 cfs @ 121.40 hrs, Volume= 16.272 af, Depth= 4.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 47.530 73 47.530 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 17.0 Direct Entry, Subcatchment LU 2-3: LU 2-3 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=47.530 ac Runoff Volume=16.272 af Runoff Depth=4.11" Tc=17.0 min CN=73 6.30 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 559HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-4: LU 2-4 Runoff = 1.87 cfs @ 121.29 hrs, Volume= 4.887 af, Depth= 4.77" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 12.300 79 12.300 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment LU 2-4: LU 2-4 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=12.300 ac Runoff Volume=4.887 af Runoff Depth=4.77" Tc=8.0 min CN=79 1.87 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 560HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-5: LU 2-5 Runoff = 1.37 cfs @ 121.28 hrs, Volume= 3.551 af, Depth= 4.66" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 9.150 78 9.150 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-5: LU 2-5 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=9.150 ac Runoff Volume=3.551 af Runoff Depth=4.66" Tc=7.0 min CN=78 1.37 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 561HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-7: LU 2-7 Runoff = 1.30 cfs @ 121.28 hrs, Volume= 3.373 af, Depth= 4.55" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 8.904 77 8.904 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-7: LU 2-7 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=8.904 ac Runoff Volume=3.373 af Runoff Depth=4.55" Tc=7.0 min CN=77 1.30 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 562HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-8: LU 2-8 Runoff = 0.78 cfs @ 121.25 hrs, Volume= 1.996 af, Depth= 4.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 5.830 73 5.830 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment LU 2-8: LU 2-8 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=5.830 ac Runoff Volume=1.996 af Runoff Depth=4.11" Tc=5.0 min CN=73 0.78 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 563HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-9: LU 2-9 Runoff = 1.42 cfs @ 121.28 hrs, Volume= 3.636 af, Depth= 3.89" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 11.210 71 11.210 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-9: LU 2-9 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=11.210 ac Runoff Volume=3.636 af Runoff Depth=3.89" Tc=7.0 min CN=71 1.42 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 564HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W11S: W11 Runoff = 0.74 cfs @ 121.36 hrs, Volume= 1.927 af, Depth= 4.23" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 2.746 74 Wetland, HSG C * 0.481 70 Woods Good, HSG C * 1.503 71 Meadow, HSG C * 0.452 74 75% Grass cover Good, HSG C * 0.284 98 Impervious, HSG C 5.464 Weighted Average 5.181 94.81% Pervious Area 0.284 5.19% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.8 650 0.0380 0.79 Lag/CN Method, Subcatchment W11S: W11 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=5.464 ac Runoff Volume=1.927 af Runoff Depth=4.23" Flow Length=650' Slope=0.0380 '/' Tc=13.8 min CN=WQ 0.74 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 565HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W12S: W12 Runoff = 0.10 cfs @ 121.21 hrs, Volume= 0.258 af, Depth= 4.22" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.081 74 Wetland, HSG C * 0.290 70 Woods Good, HSG C * 0.316 74 75% Grass cover Good, HSG C * 0.047 98 Impervious, HSG C 0.734 Weighted Average 0.687 93.58% Pervious Area 0.047 6.42% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.1 130 0.1200 1.01 Lag/CN Method, Subcatchment W12S: W12 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.11 0.105 0.1 0.095 0.09 0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.734 ac Runoff Volume=0.258 af Runoff Depth=4.22" Flow Length=130' Slope=0.1200 '/' Tc=2.1 min CN=WQ 0.10 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 566HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W13S: W13 Runoff = 0.24 cfs @ 121.31 hrs, Volume= 0.625 af, Depth= 4.34" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.038 74 Wetland, HSG C * 0.252 70 Woods Good, HSG C * 1.325 74 75% Grass cover Good, HSG C * 0.114 98 Impervious, HSG C 1.729 Weighted Average 1.615 93.39% Pervious Area 0.114 6.61% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 715 0.0900 1.27 Lag/CN Method, Subcatchment W13S: W13 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=1.729 ac Runoff Volume=0.625 af Runoff Depth=4.34" Flow Length=715' Slope=0.0900 '/' Tc=9.4 min CN=WQ 0.24 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 567HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W14S: W14 Runoff = 0.34 cfs @ 121.30 hrs, Volume= 0.916 af, Depth= 4.48" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.084 74 Wetland, HSG C * 0.638 70 Woods Good, HSG C * 0.014 71 Meadow, HSG C * 1.375 74 75% Grass cover Good, HSG C * 0.341 98 Impervious, HSG C 2.452 Weighted Average 2.112 86.11% Pervious Area 0.341 13.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.1 715 0.0900 1.30 Lag/CN Method, Subcatchment W14S: W14 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=2.452 ac Runoff Volume=0.916 af Runoff Depth=4.48" Flow Length=715' Slope=0.0900 '/' Tc=9.1 min CN=WQ 0.34 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 568HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W6S: W6 Runoff = 0.08 cfs @ 121.23 hrs, Volume= 0.201 af, Depth= 4.19" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.061 74 Wetland, HSG C * 0.392 71 Meadow, HSG C * 0.080 74 75% Grass cover Good, HSG C * 0.041 98 Impervious, HSG C 0.575 Weighted Average 0.534 92.88% Pervious Area 0.041 7.12% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.7 200 0.0800 0.90 Lag/CN Method, Subcatchment W6S: W6 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.575 ac Runoff Volume=0.201 af Runoff Depth=4.19" Flow Length=200' Slope=0.0800 '/' Tc=3.7 min CN=WQ 0.08 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 569HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Reach Pipe from W2 to W1: Pipe from Wetland 2 to Wetland 1 [52] Hint: Inlet/Outlet conditions not evaluated Inflow = 6.99 cfs @ 122.80 hrs, Volume= 37.319 af Outflow = 6.99 cfs @ 122.82 hrs, Volume= 37.317 af, Atten= 0%, Lag= 0.9 min Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Max. Velocity= 3.04 fps, Min. Travel Time= 1.2 min Avg. Velocity = 1.80 fps, Avg. Travel Time= 2.0 min Peak Storage= 487 cf @ 122.82 hrs Average Depth at Peak Storage= 1.08' Bank-Full Depth= 3.00' Flow Area= 7.1 sf, Capacity= 25.09 cfs 36.0" Round Pipe n= 0.013 Concrete pipe, bends & connections Length= 212.0' Slope= 0.0014 '/' Inlet Invert= 964.30', Outlet Invert= 964.00' Reach Pipe from W2 to W1: Pipe from Wetland 2 to Wetland 1 Inflow Outflow Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Avg. Flow Depth=1.08' Max Vel=3.04 fps 36.0" Round Pipe n=0.013 L=212.0' S=0.0014 '/' Capacity=25.09 cfs 6.99 cfs 6.99 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 570HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 300P: Pond with IESF Inflow Area = 73.792 ac, 31.33% Impervious, Inflow Depth > 3.56" for Snowmelt_10d_100yr event Inflow = 7.77 cfs @ 121.42 hrs, Volume= 21.866 af Outflow = 3.91 cfs @ 125.61 hrs, Volume= 19.917 af, Atten= 50%, Lag= 251.7 min Primary = 3.91 cfs @ 125.61 hrs, Volume= 19.917 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 965.00' Surf.Area= 59,664 sf Storage= 254,284 cf Peak Elev= 967.59' @ 125.61 hrs Surf.Area= 94,738 sf Storage= 481,546 cf (227,262 cf above start) Plug-Flow detention time= 3,880.3 min calculated for 14.079 af (64% of inflow) Center-of-Mass det. time= 748.2 min ( 8,782.2 - 8,033.9 ) Volume Invert Avail.Storage Storage Description #1 955.00' 779,932 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 955.00 7,650 0 0 956.00 11,005 9,328 9,328 958.00 16,690 27,695 37,023 960.00 23,225 39,915 76,938 962.00 31,363 54,588 131,526 963.00 36,141 33,752 165,278 964.00 41,104 38,623 203,900 965.00 59,664 50,384 254,284 965.01 63,414 615 254,899 965.02 80,995 722 255,621 965.95 85,712 77,519 333,140 970.50 110,680 446,792 779,932 Device Routing Invert Outlet Devices #1 Primary 960.22'42.0" Round RCP_Round 42" L= 43.0' Ke= 0.500 Inlet / Outlet Invert= 960.22' / 960.00' S= 0.0051 '/' Cc= 0.900 n= 0.013, Flow Area= 9.62 sf #2 Device 1 965.95'Custom Weir, Cv= 2.62 (C= 3.28) Head (feet) 0.00 2.35 2.35 5.00 Width (feet) 0.50 0.50 7.00 7.00 #3 Device 2 960.00'42.0" Round RCP_Round 42" L= 10.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 960.00' / 960.00' S= 0.0000 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 9.62 sf #4 Device 1 963.00'6.0" Vert. 2 - 6" Draintile Outlet X 2.00 C= 0.600 #5 Device 4 965.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 965.00' - 965.01' Excluded Surface area = 59,664 sf #6 Secondary 960.22'36.0" Round RCP_Round 36" L= 43.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 960.22' / 960.00' S= 0.0051 '/' Cc= 0.900 Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 571HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf #7 Device 6 968.30'5.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Primary OutFlow Max=3.91 cfs @ 125.61 hrs HW=967.59' TW=957.52' (Dynamic Tailwater) 1=RCP_Round 42" (Passes 3.91 cfs of 109.87 cfs potential flow) 2=Custom Weir (Weir Controls 3.45 cfs @ 4.20 fps) 3=RCP_Round 42" (Passes 3.45 cfs of 81.02 cfs potential flow) 4=2 - 6" Draintile Outlet (Passes 0.46 cfs of 3.94 cfs potential flow) 5=Iron Enhanced Filtration (Exfiltration Controls 0.46 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=965.00' TW=957.00' (Dynamic Tailwater) 6=RCP_Round 36" (Passes 0.00 cfs of 59.59 cfs potential flow) 7=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) Pond 300P: Pond with IESF Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=73.792 ac Peak Elev=967.59' Storage=481,546 cf 7.77 cfs 3.91 cfs 3.91 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 572HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 400P: County pond with IESF Inflow Area = 4.800 ac, 45.05% Impervious, Inflow Depth = 5.37" for Snowmelt_10d_100yr event Inflow = 0.76 cfs @ 121.31 hrs, Volume= 2.148 af Outflow = 0.73 cfs @ 121.69 hrs, Volume= 2.018 af, Atten= 3%, Lag= 22.9 min Primary = 0.73 cfs @ 121.69 hrs, Volume= 2.018 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 984.00' Surf.Area= 10,824 sf Storage= 37,248 cf Peak Elev= 984.59' @ 121.69 hrs Surf.Area= 16,502 sf Storage= 46,566 cf (9,318 cf above start) Plug-Flow detention time= 4,294.9 min calculated for 1.163 af (54% of inflow) Center-of-Mass det. time= 391.0 min ( 8,321.1 - 7,930.1 ) Volume Invert Avail.Storage Storage Description #1 974.00' 185,067 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 974.00 485 0 0 975.00 868 677 677 976.00 1,334 1,101 1,778 978.00 2,522 3,856 5,634 980.00 4,030 6,552 12,186 982.00 5,839 9,869 22,055 983.00 6,862 6,351 28,405 984.00 10,824 8,843 37,248 984.01 11,174 110 37,358 984.02 15,262 132 37,490 984.45 16,243 6,774 44,264 985.00 17,254 9,212 53,475 986.00 20,050 18,652 72,127 987.00 22,870 21,460 93,587 991.00 22,870 91,480 185,067 Device Routing Invert Outlet Devices #1 Primary 982.00'15.0" Round RCP_Round 15" L= 29.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 982.00' / 982.00' S= 0.0000 '/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #2 Device 1 984.45'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 3.0' Crest Height #3 Device 2 982.00'15.0" Round RCP_Round 15" L= 22.0' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 981.75' / 982.00' S= -0.0114 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #4 Device 1 982.00'6.0" Vert. Draintile Outlet C= 0.600 #5 Device 4 984.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 984.00' - 984.01' Excluded Surface area = 10,824 sf Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 573HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Primary OutFlow Max=0.73 cfs @ 121.69 hrs HW=984.59' TW=980.25' (Dynamic Tailwater) 1=RCP_Round 15" (Passes 0.73 cfs of 8.32 cfs potential flow) 2=Sharp-Crested Rectangular Weir (Weir Controls 0.69 cfs @ 1.23 fps) 3=RCP_Round 15" (Passes 0.69 cfs of 2.22 cfs potential flow) 4=Draintile Outlet (Passes 0.04 cfs of 1.45 cfs potential flow) 5=Iron Enhanced Filtration (Exfiltration Controls 0.04 cfs) Pond 400P: County pond with IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=4.800 ac Peak Elev=984.59' Storage=46,566 cf 0.76 cfs 0.73 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 574HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 490: CB inlet [57] Hint: Peaked at 984.76' (Flood elevation advised) Inflow Area = 5.397 ac, 16.24% Impervious, Inflow Depth > 4.15" for Snowmelt_10d_100yr event Inflow = 0.76 cfs @ 121.45 hrs, Volume= 1.865 af Outflow = 0.76 cfs @ 121.46 hrs, Volume= 1.865 af, Atten= 0%, Lag= 0.1 min Primary = 0.76 cfs @ 121.46 hrs, Volume= 1.865 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 984.76' @ 121.46 hrs Device Routing Invert Outlet Devices #1 Primary 984.63'19.0" Horiz. Orifice/Grate C= 0.600 in 22.0" Grate (75% open area) Limited to weir flow at low heads #2 Secondary 985.10'8.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=0.76 cfs @ 121.46 hrs HW=984.76' TW=967.27' (Dynamic Tailwater) 1=Orifice/Grate (Weir Controls 0.76 cfs @ 1.18 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=984.63' TW=981.04' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 575HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 490: CB inlet Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=5.397 ac Peak Elev=984.76' 0.76 cfs 0.76 cfs 0.76 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 576HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 491P: CB inlet [57] Hint: Peaked at 981.04' (Flood elevation advised) Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 981.04' @ 0.00 hrs Device Routing Invert Outlet Devices #1 Primary 981.04'19.0" Horiz. Orifice/Grate C= 0.600 in 22.0" Grate (75% open area) Limited to weir flow at low heads Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=981.04' TW=965.00' (Dynamic Tailwater) 1=Orifice/Grate ( Controls 0.00 cfs) Pond 491P: CB inlet Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Peak Elev=981.04' 0.00 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 577HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 500P: IESF Inflow Area = 1.766 ac, 29.44% Impervious, Inflow Depth = 5.01" for Snowmelt_10d_100yr event Inflow = 0.27 cfs @ 121.29 hrs, Volume= 0.737 af Outflow = 0.27 cfs @ 121.32 hrs, Volume= 0.694 af, Atten= 0%, Lag= 1.6 min Primary = 0.27 cfs @ 121.32 hrs, Volume= 0.694 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 985.31' @ 121.32 hrs Surf.Area= 2,777 sf Storage= 2,828 cf Plug-Flow detention time= 712.4 min calculated for 0.694 af (94% of inflow) Center-of-Mass det. time= 369.9 min ( 8,495.2 - 8,125.3 ) Volume Invert Avail.Storage Storage Description #1 984.00' 6,740 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 984.00 0 0 0 984.01 200 1 1 984.02 1,600 9 10 985.00 2,468 1,993 2,003 985.50 2,960 1,357 3,360 986.00 3,520 1,620 4,980 986.50 3,520 1,760 6,740 Device Routing Invert Outlet Devices #1 Primary 982.00'6.0" Vert. Draintile Outlet C= 0.600 #2 Device 1 984.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 984.00' - 984.01' Excluded Surface area = 0 sf #3 Primary 985.30'60.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.27 cfs @ 121.32 hrs HW=985.31' TW=980.21' (Dynamic Tailwater) 1=Draintile Outlet (Passes 0.02 cfs of 1.66 cfs potential flow) 2=Iron Enhanced Filtration (Exfiltration Controls 0.02 cfs) 3=Broad-Crested Rectangular Weir (Weir Controls 0.24 cfs @ 0.28 fps) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 578HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 500P: IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=1.766 ac Peak Elev=985.31' Storage=2,828 cf 0.27 cfs 0.27 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 579HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 600P: rain garden [86] Warning: Oscillations may require smaller dt (severity=13952) Inflow Area = 2.197 ac, 13.03% Impervious, Inflow Depth > 2.22" for Snowmelt_10d_100yr event Inflow = 0.07 cfs @ 121.32 hrs, Volume= 0.406 af Outflow = 0.07 cfs @ 121.40 hrs, Volume= 0.389 af, Atten= 1%, Lag= 4.5 min Discarded = 0.01 cfs @ 119.64 hrs, Volume= 0.140 af Primary = 0.06 cfs @ 121.40 hrs, Volume= 0.249 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 999.52' @ 121.40 hrs Surf.Area= 2,045 sf Storage= 1,258 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 221.7 min ( 9,783.5 - 9,561.9 ) Volume Invert Avail.Storage Storage Description #1 998.70' 6,330 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 998.70 1,000 0 0 999.50 2,045 1,218 1,218 1,000.00 2,045 1,023 2,240 1,002.00 2,045 4,090 6,330 Device Routing Invert Outlet Devices #1 Primary 999.50'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 998.70'0.200 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 119.64 hrs HW=999.50' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.06 cfs @ 121.40 hrs HW=999.52' TW=957.49' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.06 cfs @ 0.33 fps) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 580HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 600P: rain garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Inflow Area=2.197 ac Peak Elev=999.52' Storage=1,258 cf 0.07 cfs 0.07 cfs 0.01 cfs 0.06 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 581HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 800P: rain garden [86] Warning: Oscillations may require smaller dt (severity=6396) Inflow Area = 1.094 ac, 15.23% Impervious, Inflow Depth = 4.49" for Snowmelt_10d_100yr event Inflow = 0.15 cfs @ 121.29 hrs, Volume= 0.409 af Outflow = 0.15 cfs @ 121.34 hrs, Volume= 0.392 af, Atten= 0%, Lag= 3.3 min Discarded = 0.01 cfs @ 121.34 hrs, Volume= 0.126 af Primary = 0.15 cfs @ 121.34 hrs, Volume= 0.266 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,001.53' @ 121.34 hrs Surf.Area= 1,641 sf Storage= 1,122 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 290.0 min ( 8,670.4 - 8,380.4 ) Volume Invert Avail.Storage Storage Description #1 1,000.70' 2,017 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,000.70 850 0 0 1,001.00 1,350 330 330 1,001.50 1,600 738 1,067 1,002.00 2,200 950 2,017 Device Routing Invert Outlet Devices #1 Primary 1,001.50'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 1,000.70'0.200 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 121.34 hrs HW=1,001.53' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.15 cfs @ 121.34 hrs HW=1,001.53' TW=1,000.47' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.15 cfs @ 0.43 fps) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 582HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 800P: rain garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Inflow Area=1.094 ac Peak Elev=1,001.53' Storage=1,122 cf 0.15 cfs 0.15 cfs 0.01 cfs 0.15 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 583HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 900P: IESF Inflow Area = 1.215 ac, 34.66% Impervious, Inflow Depth = 5.17" for Snowmelt_10d_100yr event Inflow = 0.19 cfs @ 121.29 hrs, Volume= 0.523 af Outflow = 0.19 cfs @ 121.38 hrs, Volume= 0.485 af, Atten= 0%, Lag= 5.2 min Primary = 0.19 cfs @ 121.38 hrs, Volume= 0.485 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 992.04' @ 121.38 hrs Surf.Area= 2,645 sf Storage= 2,201 cf Plug-Flow detention time= 805.4 min calculated for 0.485 af (93% of inflow) Center-of-Mass det. time= 369.8 min ( 8,418.7 - 8,048.9 ) Volume Invert Avail.Storage Storage Description #1 991.00' 3,533 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.00 0 0 0 991.01 100 0 0 991.02 1,650 9 9 991.50 2,131 907 917 992.00 2,605 1,184 2,101 992.50 3,124 1,432 3,533 Device Routing Invert Outlet Devices #1 Primary 989.00'6.0" Vert. Draintile Outlet C= 0.600 #2 Device 1 991.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 991.00' - 991.01' Excluded Surface area = 0 sf #3 Primary 992.00'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.19 cfs @ 121.38 hrs HW=992.04' TW=987.12' (Dynamic Tailwater) 1=Draintile Outlet (Passes 0.01 cfs of 1.58 cfs potential flow) 2=Iron Enhanced Filtration (Exfiltration Controls 0.01 cfs) 3=Broad-Crested Rectangular Weir (Weir Controls 0.18 cfs @ 0.46 fps) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 584HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 900P: IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Inflow Area=1.215 ac Peak Elev=992.04' Storage=2,201 cf 0.19 cfs 0.19 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 585HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB11: Bluffs at Lake Lucy CB 11 Inflow Area = 0.920 ac, 18.48% Impervious, Inflow Depth = 4.71" for Snowmelt_10d_100yr event Inflow = 0.13 cfs @ 121.38 hrs, Volume= 0.361 af Outflow = 0.13 cfs @ 121.39 hrs, Volume= 0.361 af, Atten= 0%, Lag= 0.5 min Primary = 0.13 cfs @ 121.39 hrs, Volume= 0.361 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 997.52' @ 121.39 hrs Surf.Area= 113 sf Storage= 2 cf Plug-Flow detention time= 4.2 min calculated for 0.361 af (100% of inflow) Center-of-Mass det. time= 4.2 min ( 8,302.6 - 8,298.4 ) Volume Invert Avail.Storage Storage Description #1 997.50' 56,626,370 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 997.50 40 0 0 998.00 1,700 435 435 1,000.50 3,500 6,500 6,935 10,002.00 9,080 56,619,435 56,626,370 Device Routing Invert Outlet Devices #1 Primary 997.50'48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 998.00'20.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.13 cfs @ 121.39 hrs HW=997.52' TW=964.80' (Dynamic Tailwater) 1=Grate (Weir Controls 0.13 cfs @ 0.48 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=997.50' TW=964.00' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 586HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB11: Bluffs at Lake Lucy CB 11 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Inflow Area=0.920 ac Peak Elev=997.52' Storage=2 cf 0.13 cfs 0.13 cfs 0.13 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 587HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB13A: Bluffs at Lake Lucy CB 13A Inflow Area = 0.130 ac, 38.46% Impervious, Inflow Depth = 5.27" for Snowmelt_10d_100yr event Inflow = 0.02 cfs @ 121.35 hrs, Volume= 0.057 af Outflow = 0.02 cfs @ 121.35 hrs, Volume= 0.057 af, Atten= 0%, Lag= 0.1 min Primary = 0.02 cfs @ 121.35 hrs, Volume= 0.057 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,014.01' @ 121.35 hrs Surf.Area= 18 sf Storage= 0 cf Plug-Flow detention time= 0.2 min calculated for 0.057 af (100% of inflow) Center-of-Mass det. time= 0.2 min ( 8,003.3 - 8,003.1 ) Volume Invert Avail.Storage Storage Description #1 1,014.00' 625 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,014.00 15 0 0 1,016.00 610 625 625 Device Routing Invert Outlet Devices #1 Primary 1,014.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 1,015.50'20.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.02 cfs @ 121.35 hrs HW=1,014.01' TW=964.79' (Dynamic Tailwater) 1=Grate (Weir Controls 0.02 cfs @ 0.31 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,014.00' TW=964.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 588HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB13A: Bluffs at Lake Lucy CB 13A Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.022 0.021 0.02 0.019 0.018 0.017 0.016 0.015 0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 Inflow Area=0.130 ac Peak Elev=1,014.01' Storage=0 cf 0.02 cfs 0.02 cfs 0.02 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 589HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB22: Bluffs at Lake Lucy CB 22 Inflow Area = 0.160 ac, 25.00% Impervious, Inflow Depth = 4.90" for Snowmelt_10d_100yr event Inflow = 0.02 cfs @ 121.38 hrs, Volume= 0.065 af Outflow = 0.02 cfs @ 121.39 hrs, Volume= 0.065 af, Atten= 0%, Lag= 0.2 min Primary = 0.02 cfs @ 121.39 hrs, Volume= 0.065 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 978.51' @ 121.39 hrs Surf.Area= 42 sf Storage= 0 cf Plug-Flow detention time= 0.5 min calculated for 0.065 af (100% of inflow) Center-of-Mass det. time= 0.5 min ( 8,193.9 - 8,193.4 ) Volume Invert Avail.Storage Storage Description #1 978.50' 145 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 978.50 40 0 0 979.50 250 145 145 Device Routing Invert Outlet Devices #1 Primary 978.50'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 979.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.02 cfs @ 121.39 hrs HW=978.51' TW=973.77' (Dynamic Tailwater) 1=Grate (Weir Controls 0.02 cfs @ 0.33 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=978.50' TW=957.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 590HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB22: Bluffs at Lake Lucy CB 22 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Inflow Area=0.160 ac Peak Elev=978.51' Storage=0 cf 0.02 cfs 0.02 cfs 0.02 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 591HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB23: Bluffs at Lake Lucy CB 23 Inflow Area = 0.160 ac, 18.75% Impervious, Inflow Depth = 4.73" for Snowmelt_10d_100yr event Inflow = 0.02 cfs @ 121.38 hrs, Volume= 0.063 af Outflow = 0.02 cfs @ 121.39 hrs, Volume= 0.063 af, Atten= 0%, Lag= 0.2 min Primary = 0.02 cfs @ 121.39 hrs, Volume= 0.063 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 978.51' @ 121.39 hrs Surf.Area= 41 sf Storage= 0 cf Plug-Flow detention time= 0.5 min calculated for 0.063 af (100% of inflow) Center-of-Mass det. time= 0.5 min ( 8,292.4 - 8,291.9 ) Volume Invert Avail.Storage Storage Description #1 978.50' 363 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 978.50 40 0 0 981.00 250 363 363 Device Routing Invert Outlet Devices #1 Primary 978.50'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 980.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.02 cfs @ 121.39 hrs HW=978.51' TW=973.77' (Dynamic Tailwater) 1=Grate (Weir Controls 0.02 cfs @ 0.33 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=978.50' TW=978.50' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 592HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB23: Bluffs at Lake Lucy CB 23 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Inflow Area=0.160 ac Peak Elev=978.51' Storage=0 cf 0.02 cfs 0.02 cfs 0.02 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 593HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB24: Bluffs at Lake Lucy CB 24 Inflow Area = 0.150 ac, 20.00% Impervious, Inflow Depth = 4.74" for Snowmelt_10d_100yr event Inflow = 0.02 cfs @ 121.38 hrs, Volume= 0.059 af Outflow = 0.02 cfs @ 121.39 hrs, Volume= 0.059 af, Atten= 0%, Lag= 0.2 min Primary = 0.02 cfs @ 121.39 hrs, Volume= 0.059 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 979.01' @ 121.39 hrs Surf.Area= 40 sf Storage= 0 cf Plug-Flow detention time= 0.5 min calculated for 0.059 af (100% of inflow) Center-of-Mass det. time= 0.5 min ( 8,278.4 - 8,277.9 ) Volume Invert Avail.Storage Storage Description #1 979.00' 180 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 979.00 40 0 0 981.00 140 180 180 Device Routing Invert Outlet Devices #1 Primary 979.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 980.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.02 cfs @ 121.39 hrs HW=979.01' TW=973.77' (Dynamic Tailwater) 1=Grate (Weir Controls 0.02 cfs @ 0.32 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=979.00' TW=978.50' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 594HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB24: Bluffs at Lake Lucy CB 24 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Inflow Area=0.150 ac Peak Elev=979.01' Storage=0 cf 0.02 cfs 0.02 cfs 0.02 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 595HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB25: Bluffs at Lake Lucy CB 25 Inflow Area = 0.080 ac, 37.50% Impervious, Inflow Depth = 5.25" for Snowmelt_10d_100yr event Inflow = 0.01 cfs @ 121.35 hrs, Volume= 0.035 af Outflow = 0.01 cfs @ 121.35 hrs, Volume= 0.035 af, Atten= 0%, Lag= 0.2 min Primary = 0.01 cfs @ 121.35 hrs, Volume= 0.035 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 981.01' @ 121.35 hrs Surf.Area= 41 sf Storage= 0 cf Plug-Flow detention time= 0.6 min calculated for 0.035 af (100% of inflow) Center-of-Mass det. time= 0.6 min ( 8,016.4 - 8,015.8 ) Volume Invert Avail.Storage Storage Description #1 981.00' 90 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 981.00 40 0 0 982.00 140 90 90 Device Routing Invert Outlet Devices #1 Primary 981.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 981.80'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.01 cfs @ 121.35 hrs HW=981.01' TW=973.77' (Dynamic Tailwater) 1=Grate (Weir Controls 0.01 cfs @ 0.27 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=981.00' TW=979.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 596HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB25: Bluffs at Lake Lucy CB 25 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 Inflow Area=0.080 ac Peak Elev=981.01' Storage=0 cf 0.01 cfs 0.01 cfs 0.01 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 597HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB26: Bluffs at Lake Lucy CB 26 Inflow Area = 0.260 ac, 23.08% Impervious, Inflow Depth = 4.85" for Snowmelt_10d_100yr event Inflow = 0.04 cfs @ 121.38 hrs, Volume= 0.105 af Outflow = 0.04 cfs @ 121.39 hrs, Volume= 0.105 af, Atten= 0%, Lag= 0.2 min Primary = 0.04 cfs @ 121.39 hrs, Volume= 0.105 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 983.01' @ 121.39 hrs Surf.Area= 51 sf Storage= 1 cf Plug-Flow detention time= 0.5 min calculated for 0.105 af (100% of inflow) Center-of-Mass det. time= 0.5 min ( 8,223.4 - 8,223.0 ) Volume Invert Avail.Storage Storage Description #1 983.00' 594 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 983.00 40 0 0 984.20 950 594 594 Device Routing Invert Outlet Devices #1 Primary 983.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 984.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.04 cfs @ 121.39 hrs HW=983.01' TW=973.77' (Dynamic Tailwater) 1=Grate (Weir Controls 0.04 cfs @ 0.39 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=983.00' TW=981.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 598HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB26: Bluffs at Lake Lucy CB 26 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.042 0.04 0.038 0.036 0.034 0.032 0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Inflow Area=0.260 ac Peak Elev=983.01' Storage=1 cf 0.04 cfs 0.04 cfs 0.04 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 599HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB27: Bluffs at Lake Lucy CB 27 Inflow Area = 0.360 ac, 16.67% Impervious, Inflow Depth = 4.67" for Snowmelt_10d_100yr event Inflow = 0.05 cfs @ 121.38 hrs, Volume= 0.140 af Outflow = 0.05 cfs @ 121.39 hrs, Volume= 0.140 af, Atten= 0%, Lag= 0.1 min Primary = 0.05 cfs @ 121.39 hrs, Volume= 0.140 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 986.02' @ 121.39 hrs Surf.Area= 42 sf Storage= 1 cf Plug-Flow detention time= 0.4 min calculated for 0.140 af (100% of inflow) Center-of-Mass det. time= 0.4 min ( 8,326.7 - 8,326.3 ) Volume Invert Avail.Storage Storage Description #1 986.00' 90 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 986.00 40 0 0 987.00 140 90 90 Device Routing Invert Outlet Devices #1 Primary 986.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 987.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.05 cfs @ 121.39 hrs HW=986.02' TW=973.77' (Dynamic Tailwater) 1=Grate (Weir Controls 0.05 cfs @ 0.43 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=986.00' TW=983.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 600HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB27: Bluffs at Lake Lucy CB 27 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Inflow Area=0.360 ac Peak Elev=986.02' Storage=1 cf 0.05 cfs 0.05 cfs 0.05 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 601HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB28: Bluffs at Lake Lucy CB 28 Inflow Area = 0.280 ac, 17.86% Impervious, Inflow Depth = 4.71" for Snowmelt_10d_100yr event Inflow = 0.04 cfs @ 121.38 hrs, Volume= 0.110 af Outflow = 0.04 cfs @ 121.39 hrs, Volume= 0.110 af, Atten= 0%, Lag= 0.2 min Primary = 0.04 cfs @ 121.39 hrs, Volume= 0.110 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 995.01' @ 121.39 hrs Surf.Area= 51 sf Storage= 1 cf Plug-Flow detention time= 0.5 min calculated for 0.110 af (100% of inflow) Center-of-Mass det. time= 0.5 min ( 8,307.0 - 8,306.5 ) Volume Invert Avail.Storage Storage Description #1 995.00' 594 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 995.00 40 0 0 996.20 950 594 594 Device Routing Invert Outlet Devices #1 Primary 995.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 996.00'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.04 cfs @ 121.39 hrs HW=995.01' TW=973.77' (Dynamic Tailwater) 1=Grate (Weir Controls 0.04 cfs @ 0.40 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=995.00' TW=986.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 602HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB28: Bluffs at Lake Lucy CB 28 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.044 0.042 0.04 0.038 0.036 0.034 0.032 0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Inflow Area=0.280 ac Peak Elev=995.01' Storage=1 cf 0.04 cfs 0.04 cfs 0.04 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 603HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB30: Bluffs at Lake Lucy CB 30 Inflow Area = 0.250 ac, 16.00% Impervious, Inflow Depth = 4.64" for Snowmelt_10d_100yr event Inflow = 0.04 cfs @ 121.38 hrs, Volume= 0.097 af Outflow = 0.04 cfs @ 121.39 hrs, Volume= 0.097 af, Atten= 0%, Lag= 0.2 min Primary = 0.04 cfs @ 121.39 hrs, Volume= 0.097 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,000.01' @ 121.39 hrs Surf.Area= 48 sf Storage= 1 cf Plug-Flow detention time= 0.5 min calculated for 0.097 af (100% of inflow) Center-of-Mass det. time= 0.5 min ( 8,342.1 - 8,341.6 ) Volume Invert Avail.Storage Storage Description #1 1,000.00' 1,240 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,000.00 40 0 0 1,002.00 1,200 1,240 1,240 Device Routing Invert Outlet Devices #1 Primary 1,000.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 1,001.00'20.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.04 cfs @ 121.39 hrs HW=1,000.01' TW=973.77' (Dynamic Tailwater) 1=Grate (Weir Controls 0.04 cfs @ 0.38 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,000.00' TW=997.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 604HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB30: Bluffs at Lake Lucy CB 30 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.04 0.038 0.036 0.034 0.032 0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Inflow Area=0.250 ac Peak Elev=1,000.01' Storage=1 cf 0.04 cfs 0.04 cfs 0.04 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 605HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB37: Bluffs at Lake Lucy CB 37 Inflow Area = 1.260 ac, 6.35% Impervious, Inflow Depth = 4.53" for Snowmelt_10d_100yr event Inflow = 0.18 cfs @ 121.38 hrs, Volume= 0.476 af Outflow = 0.18 cfs @ 121.39 hrs, Volume= 0.476 af, Atten= 0%, Lag= 0.2 min Primary = 0.18 cfs @ 121.39 hrs, Volume= 0.476 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,004.04' @ 121.39 hrs Surf.Area= 86 sf Storage= 2 cf Plug-Flow detention time= 0.3 min calculated for 0.476 af (100% of inflow) Center-of-Mass det. time= 0.3 min ( 8,452.6 - 8,452.2 ) Volume Invert Avail.Storage Storage Description #1 1,004.00' 2,440 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,004.00 40 0 0 1,006.00 2,400 2,440 2,440 Device Routing Invert Outlet Devices #1 Primary 1,004.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 1,005.50'20.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.18 cfs @ 121.39 hrs HW=1,004.04' TW=973.77' (Dynamic Tailwater) 1=Grate (Weir Controls 0.18 cfs @ 0.65 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,004.00' TW=973.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 606HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB37: Bluffs at Lake Lucy CB 37 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Inflow Area=1.260 ac Peak Elev=1,004.04' Storage=2 cf 0.18 cfs 0.18 cfs 0.18 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 607HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_CB9: Bluffs at Lake Lucy CB 9 Inflow Area = 1.400 ac, 17.86% Impervious, Inflow Depth = 4.60" for Snowmelt_10d_100yr event Inflow = 0.20 cfs @ 121.38 hrs, Volume= 0.537 af Outflow = 0.20 cfs @ 121.39 hrs, Volume= 0.537 af, Atten= 0%, Lag= 0.1 min Primary = 0.20 cfs @ 121.39 hrs, Volume= 0.537 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,010.04' @ 121.39 hrs Surf.Area= 52 sf Storage= 2 cf Plug-Flow detention time= 0.3 min calculated for 0.537 af (100% of inflow) Center-of-Mass det. time= 0.3 min ( 8,331.0 - 8,330.8 ) Volume Invert Avail.Storage Storage Description #1 1,010.00' 650 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,010.00 40 0 0 1,012.00 610 650 650 Device Routing Invert Outlet Devices #1 Primary 1,010.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 1,012.00'20.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.20 cfs @ 121.39 hrs HW=1,010.04' TW=964.80' (Dynamic Tailwater) 1=Grate (Weir Controls 0.20 cfs @ 0.67 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=1,010.00' TW=964.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 608HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond BLL_CB9: Bluffs at Lake Lucy CB 9 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.22 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Inflow Area=1.400 ac Peak Elev=1,010.04' Storage=2 cf 0.20 cfs 0.20 cfs 0.20 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 609HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_Pond1: Bluffs at Lake Lucy Pond 1 Inflow Area = 10.000 ac, 36.90% Impervious, Inflow Depth = 5.21" for Snowmelt_10d_100yr event Inflow = 1.55 cfs @ 121.35 hrs, Volume= 4.342 af Outflow = 1.22 cfs @ 122.90 hrs, Volume= 4.306 af, Atten= 22%, Lag= 93.2 min Primary = 1.22 cfs @ 122.90 hrs, Volume= 4.306 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 973.00' Surf.Area= 21,004 sf Storage= 90,682 cf Peak Elev= 973.82' @ 122.90 hrs Surf.Area= 22,601 sf Storage= 108,588 cf (17,907 cf above start) Plug-Flow detention time= 4,521.6 min calculated for 2.224 af (51% of inflow) Center-of-Mass det. time= 337.1 min ( 8,361.8 - 8,024.7 ) Volume Invert Avail.Storage Storage Description #1 963.00' 333,459 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 963.00 2,140 0 0 964.00 3,250 2,695 2,695 966.00 5,742 8,992 11,687 968.00 8,547 14,289 25,976 970.00 11,621 20,168 46,144 972.00 14,943 26,564 72,708 973.00 21,004 17,974 90,682 974.00 22,948 21,976 112,658 976.00 27,007 49,955 162,613 978.00 31,892 58,899 221,512 980.00 39,370 71,262 292,774 981.00 42,000 40,685 333,459 Device Routing Invert Outlet Devices #1 Primary 970.50'27.0" Round OCS to Outlet L= 14.5' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 970.50' / 969.50' S= 0.0690 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 3.98 sf #2 Device 1 973.00'OCS Internal Weir, Cv= 2.62 (C= 3.28) Head (feet) 0.00 1.00 1.50 1.51 3.00 4.00 Width (feet) 0.50 0.50 0.50 4.00 4.00 4.00 #3 Device 2 970.50'15.0" Round Low Flow Pipe L= 30.4' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 970.00' / 970.50' S= -0.0164 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #4 Device 1 977.00'48.0" Horiz. OCS Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 979.10'8.0' long x 4.0' breadth EOF Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 610HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Primary OutFlow Max=1.22 cfs @ 122.90 hrs HW=973.82' TW=965.38' (Dynamic Tailwater) 1=OCS to Outlet (Passes 1.22 cfs of 35.47 cfs potential flow) 2=OCS Internal Weir (Weir Controls 1.22 cfs @ 2.97 fps) 3=Low Flow Pipe (Passes 1.22 cfs of 5.36 cfs potential flow) 4=OCS Grate ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=973.00' TW=969.90' (Dynamic Tailwater) 5=EOF ( Controls 0.00 cfs) Pond BLL_Pond1: Bluffs at Lake Lucy Pond 1 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=10.000 ac Peak Elev=973.82' Storage=108,588 cf 1.55 cfs 1.22 cfs 1.22 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 611HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond BLL_Pond2: Bluffs at Lake Lucy Pond 2 [86] Warning: Oscillations may require smaller dt (severity=13214) Inflow Area = 9.320 ac, 34.98% Impervious, Inflow Depth = 5.15" for Snowmelt_10d_100yr event Inflow = 1.44 cfs @ 121.38 hrs, Volume= 4.003 af Outflow = 0.26 cfs @ 146.03 hrs, Volume= 3.761 af, Atten= 82%, Lag= 1,478.6 min Discarded = 0.24 cfs @ 5.27 hrs, Volume= 3.726 af Primary = 0.02 cfs @ 146.03 hrs, Volume= 0.035 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 964.00' Surf.Area= 25,003 sf Storage= 19,002 cf Peak Elev= 965.56' @ 146.03 hrs Surf.Area= 29,395 sf Storage= 61,312 cf (42,310 cf above start) Plug-Flow detention time= 2,883.0 min calculated for 3.325 af (83% of inflow) Center-of-Mass det. time= 1,150.9 min ( 9,203.1 - 8,052.2 ) Volume Invert Avail.Storage Storage Description #1 958.00' 221,527 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 958.00 128 0 0 960.00 713 841 841 962.00 1,731 2,444 3,285 963.00 2,350 2,041 5,326 964.00 25,003 13,677 19,002 966.00 30,650 55,653 74,655 967.00 33,590 32,120 106,775 968.00 35,597 34,594 141,369 969.20 41,600 46,318 187,687 970.00 43,000 33,840 221,527 Device Routing Invert Outlet Devices #1 Primary 960.50'18.0" Round MH 16 to FES 15 L= 74.6' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 960.50' / 959.80' S= 0.0094 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.77 sf #2 Device 1 965.50'OCS Internal Weir, Cv= 2.62 (C= 3.28) Head (feet) 0.00 0.50 1.00 1.01 1.50 Width (feet) 0.50 0.50 0.50 4.00 4.00 #3 Device 2 961.50'15.0" Round Low Flow Pipe L= 32.2' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 961.50' / 961.50' S= 0.0000 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #4 Device 1 967.00'48.0" Horiz. OCS C= 0.600 Limited to weir flow at low heads #5 Discarded 964.00'0.24 cfs Infiltration when above 964.00' #6 Secondary 968.20'8.0' long x 4.0' breadth EOF Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 612HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Discarded OutFlow Max=0.24 cfs @ 5.27 hrs HW=964.00' (Free Discharge) 5=Infiltration (Exfiltration Controls 0.24 cfs) Primary OutFlow Max=0.02 cfs @ 146.03 hrs HW=965.56' TW=957.21' (Dynamic Tailwater) 1=MH 16 to FES 15 (Passes 0.02 cfs of 18.27 cfs potential flow) 2=OCS Internal Weir (Weir Controls 0.02 cfs @ 0.77 fps) 3=Low Flow Pipe (Passes 0.02 cfs of 1.39 cfs potential flow) 4=OCS ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=964.00' TW=957.00' (Dynamic Tailwater) 6=EOF ( Controls 0.00 cfs) Pond BLL_Pond2: Bluffs at Lake Lucy Pond 2 Inflow Outflow Discarded Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=9.320 ac Peak Elev=965.56' Storage=61,312 cf 1.44 cfs 0.26 cfs 0.24 cfs 0.02 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 613HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond CB-9: EX CB-9 [57] Hint: Peaked at 988.36' (Flood elevation advised) Inflow Area = 11.464 ac, 0.00% Impervious, Inflow Depth > 4.45" for Snowmelt_10d_100yr event Inflow = 1.54 cfs @ 121.69 hrs, Volume= 4.253 af Outflow = 1.54 cfs @ 121.69 hrs, Volume= 4.253 af, Atten= 0%, Lag= 0.1 min Primary = 1.54 cfs @ 121.69 hrs, Volume= 4.253 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 988.36' @ 121.69 hrs Device Routing Invert Outlet Devices #1 Primary 987.85'24.0" Round CMP_Round 24" L= 94.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 987.85' / 980.75' S= 0.0755 '/' Cc= 0.900 n= 0.025 Corrugated metal, Flow Area= 3.14 sf Primary OutFlow Max=1.54 cfs @ 121.69 hrs HW=988.36' TW=980.25' (Dynamic Tailwater) 1=CMP_Round 24" (Inlet Controls 1.54 cfs @ 2.43 fps) Pond CB-9: EX CB-9 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=11.464 ac Peak Elev=988.36' 24.0" Round Culvert n=0.025 L=94.0' S=0.0755 '/' 1.54 cfs 1.54 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 614HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond GB_CB27: Bluffs at Lake Lucy CB 29 Inflow Area = 0.100 ac, 30.00% Impervious, Inflow Depth = 5.04" for Snowmelt_10d_100yr event Inflow = 0.02 cfs @ 121.35 hrs, Volume= 0.042 af Outflow = 0.02 cfs @ 121.39 hrs, Volume= 0.042 af, Atten= 0%, Lag= 2.2 min Primary = 0.02 cfs @ 121.39 hrs, Volume= 0.042 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 997.01' @ 121.39 hrs Surf.Area= 41 sf Storage= 0 cf Plug-Flow detention time= 0.6 min calculated for 0.042 af (100% of inflow) Center-of-Mass det. time= 0.6 min ( 8,120.1 - 8,119.5 ) Volume Invert Avail.Storage Storage Description #1 997.00' 80 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 997.00 40 0 0 998.00 120 80 80 Device Routing Invert Outlet Devices #1 Primary 997.00'27.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 997.50'10.0' long x 5.0' breadth Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.02 cfs @ 121.39 hrs HW=997.01' TW=973.77' (Dynamic Tailwater) 1=Grate (Weir Controls 0.02 cfs @ 0.28 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=997.00' TW=995.00' (Dynamic Tailwater) 2=Berm ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 615HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond GB_CB27: Bluffs at Lake Lucy CB 29 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.017 0.016 0.015 0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 Inflow Area=0.100 ac Peak Elev=997.01' Storage=0 cf 0.02 cfs 0.02 cfs 0.02 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 616HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond LUCY: LAKE LUCY [40] Hint: Not Described (Outflow=Inflow) Inflow = 23.92 cfs @ 123.30 hrs, Volume= 110.330 af Primary = 23.92 cfs @ 123.31 hrs, Volume= 110.330 af, Atten= 0%, Lag= 0.1 min Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Pond LUCY: LAKE LUCY Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)26 24 22 20 18 16 14 12 10 8 6 4 2 0 23.92 cfs 23.92 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 617HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-1: P-LU 2-1 [86] Warning: Oscillations may require smaller dt (severity=24777) Inflow = 25.13 cfs @ 121.97 hrs, Volume= 98.109 af Outflow = 23.01 cfs @ 123.41 hrs, Volume= 107.724 af, Atten= 8%, Lag= 86.3 min Primary = 23.01 cfs @ 123.41 hrs, Volume= 107.724 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 957.56' @ 123.41 hrs Surf.Area= 316,341 sf Storage= 158,665 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= (not calculated: outflow precedes inflow) Volume Invert Avail.Storage Storage Description #1 957.00'263,128,940,839 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 957.00 8,105 0 0 958.00 557,600 282,853 282,853 960.00 1,540,893 2,098,493 2,381,346 962.00 2,214,005 3,754,898 6,136,244 96,400.00 3,300,000 263,122,804,595 263,128,940,839 Device Routing Invert Outlet Devices #1 Primary 957.00'20.0' long Broad-Crested Rectangular Weir X 0.00 Head (feet) 0.50 1.00 1.50 Coef. (English) 3.00 3.00 3.00 #2 Primary 956.50'Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 0.00 0.50 1.00 1.50 2.00 2.50 Width (feet) 2.00 6.00 16.00 25.00 37.00 45.00 Primary OutFlow Max=23.01 cfs @ 123.41 hrs HW=957.56' TW=0.00' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) 2=Custom Weir/Orifice (Weir Controls 23.01 cfs @ 2.70 fps) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 618HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-1: P-LU 2-1 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Peak Elev=957.56' Storage=158,665 cf 25.13 cfs 23.01 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 619HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-10: P-LU 2-10 Inflow Area = 9.880 ac, 0.00% Impervious, Inflow Depth = 4.11" for Snowmelt_10d_100yr event Inflow = 1.32 cfs @ 121.26 hrs, Volume= 3.382 af Outflow = 1.30 cfs @ 121.41 hrs, Volume= 3.216 af, Atten= 1%, Lag= 8.9 min Primary = 1.30 cfs @ 121.41 hrs, Volume= 3.216 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 972.61' @ 121.41 hrs Surf.Area= 0.091 ac Storage= 0.207 af Plug-Flow detention time= 539.3 min calculated for 3.216 af (95% of inflow) Center-of-Mass det. time= 268.5 min ( 8,935.4 - 8,667.0 ) Volume Invert Avail.Storage Storage Description #1 968.00' 1.289 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.009 0.000 0.000 972.00 0.070 0.158 0.158 974.00 0.140 0.210 0.368 976.00 0.220 0.360 0.728 978.00 0.341 0.561 1.289 Device Routing Invert Outlet Devices #1 Primary 972.10'18.0" Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.30 cfs @ 121.41 hrs HW=972.61' TW=970.47' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 1.30 cfs @ 2.44 fps) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 620HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-10: P-LU 2-10 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=9.880 ac Peak Elev=972.61' Storage=0.207 af 1.32 cfs 1.30 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 621HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-11: P-LU 2-11 Inflow = 8.33 cfs @ 121.43 hrs, Volume= 23.148 af Outflow = 1.68 cfs @ 155.25 hrs, Volume= 13.900 af, Atten= 80%, Lag= 2,029.3 min Primary = 1.68 cfs @ 155.25 hrs, Volume= 13.900 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 972.95' @ 155.25 hrs Surf.Area= 5.908 ac Storage= 11.086 af Plug-Flow detention time= 3,799.0 min calculated for 13.900 af (60% of inflow) Center-of-Mass det. time= 2,113.5 min ( 11,017.5 - 8,904.1 ) Volume Invert Avail.Storage Storage Description #1 968.00' 93.400 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.360 0.000 0.000 970.00 1.000 1.360 1.360 972.00 4.000 5.000 6.360 976.00 12.000 32.000 38.360 980.00 15.520 55.040 93.400 Device Routing Invert Outlet Devices #1 Primary 972.01'15.0" Round Culvert L= 114.0' Ke= 0.500 Inlet / Outlet Invert= 972.01' / 971.97' S= 0.0004 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 1.23 sf Primary OutFlow Max=1.68 cfs @ 155.25 hrs HW=972.95' TW=970.11' (Dynamic Tailwater) 1=Culvert (Barrel Controls 1.68 cfs @ 2.35 fps) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 622HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-11: P-LU 2-11 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)9 8 7 6 5 4 3 2 1 0 Peak Elev=972.95' Storage=11.086 af 15.0" Round Culvert n=0.011 L=114.0' S=0.0004 '/' 8.33 cfs 1.68 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 623HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-12: P-LU 2-12 Inflow Area = 9.720 ac, 0.00% Impervious, Inflow Depth = 4.00" for Snowmelt_10d_100yr event Inflow = 1.26 cfs @ 121.26 hrs, Volume= 3.240 af Outflow = 0.85 cfs @ 123.55 hrs, Volume= 2.209 af, Atten= 33%, Lag= 137.1 min Primary = 0.85 cfs @ 123.55 hrs, Volume= 2.209 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 978.41' @ 123.55 hrs Surf.Area= 0.295 ac Storage= 1.134 af Plug-Flow detention time= 2,694.1 min calculated for 2.209 af (68% of inflow) Center-of-Mass det. time= 1,259.5 min ( 9,966.2 - 8,706.8 ) Volume Invert Avail.Storage Storage Description #1 972.00' 2.680 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 972.00 0.080 0.000 0.000 978.00 0.260 1.020 1.020 980.00 0.430 0.690 1.710 982.00 0.540 0.970 2.680 Device Routing Invert Outlet Devices #1 Primary 978.00'18.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 980.00'100.0' long x 26.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.85 cfs @ 123.55 hrs HW=978.41' TW=972.32' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 0.85 cfs @ 2.18 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=972.00' TW=968.00' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 624HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-12: P-LU 2-12 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=9.720 ac Peak Elev=978.41' Storage=1.134 af 1.26 cfs 0.85 cfs 0.85 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 625HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-13: P-LU 2-13 Inflow Area = 15.390 ac, 0.00% Impervious, Inflow Depth = 4.00" for Snowmelt_10d_100yr event Inflow = 2.00 cfs @ 121.28 hrs, Volume= 5.130 af Outflow = 1.93 cfs @ 121.57 hrs, Volume= 4.611 af, Atten= 3%, Lag= 17.2 min Primary = 1.93 cfs @ 121.57 hrs, Volume= 4.611 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 990.18' @ 121.57 hrs Surf.Area= 0.267 ac Storage= 0.654 af Plug-Flow detention time= 1,033.9 min calculated for 4.611 af (90% of inflow) Center-of-Mass det. time= 500.4 min ( 9,208.1 - 8,707.7 ) Volume Invert Avail.Storage Storage Description #1 986.00' 2.750 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 986.00 0.054 0.000 0.000 989.60 0.230 0.511 0.511 993.00 0.450 1.156 1.667 994.00 0.540 0.495 2.162 995.00 0.635 0.587 2.750 Device Routing Invert Outlet Devices #1 Primary 989.60'24.0" Round Culvert L= 110.0' Ke= 0.500 Inlet / Outlet Invert= 989.60' / 983.00' S= 0.0600 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 3.14 sf Primary OutFlow Max=1.93 cfs @ 121.57 hrs HW=990.18' TW=972.03' (Dynamic Tailwater) 1=Culvert (Inlet Controls 1.93 cfs @ 2.58 fps) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 626HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-13: P-LU 2-13 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Inflow Area=15.390 ac Peak Elev=990.18' Storage=0.654 af 24.0" Round Culvert n=0.011 L=110.0' S=0.0600 '/' 2.00 cfs 1.93 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 627HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-2: P-LU 2-2 [86] Warning: Oscillations may require smaller dt (severity=26) Inflow = 3.48 cfs @ 121.29 hrs, Volume= 24.774 af Outflow = 2.99 cfs @ 121.30 hrs, Volume= 24.767 af, Atten= 14%, Lag= 0.3 min Primary = 2.99 cfs @ 121.30 hrs, Volume= 24.767 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 969.90' Surf.Area= 0.094 ac Storage= 0.085 af Peak Elev= 970.56' @ 122.71 hrs Surf.Area= 0.342 ac Storage= 0.219 af (0.133 af above start) Plug-Flow detention time= 57.5 min calculated for 24.682 af (100% of inflow) Center-of-Mass det. time= 6.6 min ( 10,089.3 - 10,082.7 ) Volume Invert Avail.Storage Storage Description #1 968.00' 11.223 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.010 0.000 0.000 969.00 0.040 0.025 0.025 970.00 0.100 0.070 0.095 971.00 0.533 0.316 0.411 972.00 3.130 1.831 2.243 973.00 4.690 3.910 6.153 974.00 5.450 5.070 11.223 Device Routing Invert Outlet Devices #1 Primary 968.58'30.0" Round RCP_Round 30" L= 85.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 968.58' / 968.08' S= 0.0059 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 4.91 sf #2 Secondary 972.01'15.0" Round Culvert L= 114.0' Ke= 0.500 Inlet / Outlet Invert= 971.97' / 972.01' S= -0.0004 '/' Cc= 0.900 n= 0.011, Flow Area= 1.23 sf Primary OutFlow Max=2.97 cfs @ 121.30 hrs HW=970.46' TW=970.42' (Dynamic Tailwater) 1=RCP_Round 30" (Outlet Controls 2.97 cfs @ 1.04 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=969.90' TW=968.00' (Dynamic Tailwater) 2=Culvert ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 628HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-2: P-LU 2-2 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Peak Elev=970.56' Storage=0.219 af 3.48 cfs 2.99 cfs 2.99 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 629HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Inflow Area = 53.360 ac, 0.00% Impervious, Inflow Depth > 4.03" for Snowmelt_10d_100yr event Inflow = 7.04 cfs @ 121.40 hrs, Volume= 17.904 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 993.84' @ 250.00 hrs Surf.Area= 12.419 ac Storage= 17.904 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 991.90' 52.450 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 991.90 5.100 0.000 0.000 992.00 5.900 0.550 0.550 994.00 13.000 18.900 19.450 996.00 20.000 33.000 52.450 Device Routing Invert Outlet Devices #1 Primary 995.00'30.0' long Broad-Crested Rectangular Weir Head (feet) 0.50 1.00 Coef. (English) 2.80 2.80 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=991.90' TW=957.00' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 630HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=53.360 ac Peak Elev=993.84' Storage=17.904 af 7.04 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 631HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-4: P-LU 2-4 Inflow Area = 13.950 ac, 2.37% Impervious, Inflow Depth = 4.77" for Snowmelt_10d_100yr event Inflow = 2.11 cfs @ 121.29 hrs, Volume= 5.541 af Outflow = 2.08 cfs @ 121.47 hrs, Volume= 5.218 af, Atten= 2%, Lag= 10.9 min Primary = 2.08 cfs @ 121.47 hrs, Volume= 5.218 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 974.63' @ 121.47 hrs Surf.Area= 0.159 ac Storage= 0.413 af Plug-Flow detention time= 684.2 min calculated for 5.218 af (94% of inflow) Center-of-Mass det. time= 351.8 min ( 8,757.9 - 8,406.1 ) Volume Invert Avail.Storage Storage Description #1 970.00' 1.120 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 970.00 0.020 0.000 0.000 974.00 0.140 0.320 0.320 978.00 0.260 0.800 1.120 Device Routing Invert Outlet Devices #1 Primary 974.00'21.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 975.00'30.0' long x 15.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=2.08 cfs @ 121.47 hrs HW=974.63' TW=970.45' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 2.08 cfs @ 2.69 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=970.00' TW=969.90' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 632HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-4: P-LU 2-4 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Inflow Area=13.950 ac Peak Elev=974.63' Storage=0.413 af 2.11 cfs 2.08 cfs 2.08 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 633HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-5: P-LU 2-5 Inflow Area = 9.150 ac, 0.00% Impervious, Inflow Depth = 4.66" for Snowmelt_10d_100yr event Inflow = 1.37 cfs @ 121.28 hrs, Volume= 3.551 af Outflow = 1.16 cfs @ 122.37 hrs, Volume= 3.568 af, Atten= 15%, Lag= 65.8 min Primary = 1.16 cfs @ 122.37 hrs, Volume= 3.568 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 965.00' Surf.Area= 0.200 ac Storage= 0.447 af Peak Elev= 965.34' @ 122.37 hrs Surf.Area= 0.299 ac Storage= 0.665 af (0.218 af above start) Plug-Flow detention time= 1,312.3 min calculated for 3.121 af (88% of inflow) Center-of-Mass det. time= 99.4 min ( 8,564.2 - 8,464.8 ) Volume Invert Avail.Storage Storage Description #1 956.00' 2.352 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 956.00 0.004 0.000 0.000 962.00 0.030 0.102 0.102 965.00 0.200 0.345 0.447 968.00 1.070 1.905 2.352 Device Routing Invert Outlet Devices #1 Primary 962.98'18.0" Round Culvert L= 30.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 962.98' / 962.83' S= 0.0050 '/' Cc= 0.900 n= 0.013, Flow Area= 1.77 sf #2 Device 1 964.83'15.0" Round Culvert L= 15.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 963.38' / 964.83' S= -0.0967 '/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #3 Device 1 966.00'18.0" W x 12.0" H Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.16 cfs @ 122.37 hrs HW=965.34' TW=957.54' (Dynamic Tailwater) 1=Culvert (Passes 1.16 cfs of 9.97 cfs potential flow) 2=Culvert (Inlet Controls 1.16 cfs @ 2.44 fps) 3=Orifice/Grate ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 634HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-5: P-LU 2-5 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=9.150 ac Peak Elev=965.34' Storage=0.665 af 1.37 cfs 1.16 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 635HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-6: Wetland 11 Inflow Area = 23.494 ac, 12.62% Impervious, Inflow Depth > 4.54" for Snowmelt_10d_100yr event Inflow = 3.26 cfs @ 121.49 hrs, Volume= 8.893 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 982.27' @ 250.00 hrs Surf.Area= 151,825 sf Storage= 387,356 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 978.00' 1,458,300 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 978.00 16,553 0 0 980.00 90,625 107,178 107,178 982.00 148,800 239,425 346,603 984.00 171,115 319,915 666,518 986.00 197,334 368,449 1,034,967 988.00 225,999 423,333 1,458,300 Device Routing Invert Outlet Devices #1 Primary 982.57'15.0" Round RCP_Round 15" L= 50.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 982.57' / 982.05' S= 0.0104 '/' Cc= 0.900 n= 0.013 Concrete sewer w/manholes & inlets, Flow Area= 1.23 sf Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=978.00' TW=965.00' (Dynamic Tailwater) 1=RCP_Round 15" ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 636HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-6: Wetland 11 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=23.494 ac Peak Elev=982.27' Storage=387,356 cf 15.0" Round Culvert n=0.013 L=50.0' S=0.0104 '/' 3.26 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 637HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-7: P-LU 2-7 Inflow Area = 8.904 ac, 0.00% Impervious, Inflow Depth = 4.55" for Snowmelt_10d_100yr event Inflow = 1.30 cfs @ 121.28 hrs, Volume= 3.373 af Outflow = 1.25 cfs @ 121.61 hrs, Volume= 3.366 af, Atten= 4%, Lag= 19.8 min Primary = 1.25 cfs @ 121.61 hrs, Volume= 3.366 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 995.27' Surf.Area= 7,683 sf Storage= 18,263 cf Peak Elev= 995.86' @ 121.61 hrs Surf.Area= 8,687 sf Storage= 23,138 cf (4,875 cf above start) Plug-Flow detention time= 1,308.0 min calculated for 2.946 af (87% of inflow) Center-of-Mass det. time= 125.1 min ( 8,631.3 - 8,506.2 ) Volume Invert Avail.Storage Storage Description #1 991.00' 117,493 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.00 871 0 0 995.27 7,683 18,263 18,263 996.00 8,932 6,064 24,327 998.00 12,906 21,838 46,165 1,000.00 18,379 31,285 77,450 1,002.00 21,664 40,043 117,493 Device Routing Invert Outlet Devices #1 Primary 995.27'12.0" Round RCP_Round 12" L= 60.8' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 995.27' / 994.07' S= 0.0197 '/' Cc= 0.900 n= 0.013, Flow Area= 0.79 sf Primary OutFlow Max=1.25 cfs @ 121.61 hrs HW=995.86' TW=988.36' (Dynamic Tailwater) 1=RCP_Round 12" (Inlet Controls 1.25 cfs @ 2.61 fps) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 638HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-7: P-LU 2-7 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=8.904 ac Peak Elev=995.86' Storage=23,138 cf 12.0" Round Culvert n=0.013 L=60.8' S=0.0197 '/' 1.30 cfs 1.25 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 639HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-8: P-LU 2-8 Inflow Area = 5.830 ac, 0.00% Impervious, Inflow Depth = 4.11" for Snowmelt_10d_100yr event Inflow = 0.78 cfs @ 121.25 hrs, Volume= 1.996 af Outflow = 0.75 cfs @ 121.59 hrs, Volume= 1.632 af, Atten= 4%, Lag= 20.3 min Primary = 0.75 cfs @ 121.59 hrs, Volume= 1.632 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 996.44' @ 121.59 hrs Surf.Area= 0.158 ac Storage= 0.425 af Plug-Flow detention time= 1,692.5 min calculated for 1.632 af (82% of inflow) Center-of-Mass det. time= 780.8 min ( 9,446.9 - 8,666.0 ) Volume Invert Avail.Storage Storage Description #1 992.00' 0.720 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 992.00 0.040 0.000 0.000 996.00 0.140 0.360 0.360 998.00 0.220 0.360 0.720 Device Routing Invert Outlet Devices #1 Primary 996.00'12.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 997.00'50.0' long x 20.0' breadth Broad-Crested Rectangular Weir X 2.00 Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.75 cfs @ 121.59 hrs HW=996.44' TW=992.54' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 0.75 cfs @ 2.25 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=992.00' TW=991.90' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 640HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-8: P-LU 2-8 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=5.830 ac Peak Elev=996.44' Storage=0.425 af 0.78 cfs 0.75 cfs 0.75 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 641HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-9: P-LU 2-9 Inflow Area = 11.210 ac, 0.00% Impervious, Inflow Depth = 3.89" for Snowmelt_10d_100yr event Inflow = 1.42 cfs @ 121.28 hrs, Volume= 3.636 af Outflow = 0.21 cfs @ 169.19 hrs, Volume= 1.587 af, Atten= 85%, Lag= 2,875.0 min Primary = 0.21 cfs @ 169.19 hrs, Volume= 1.587 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 977.26' @ 169.19 hrs Surf.Area= 1.602 ac Storage= 2.219 af Plug-Flow detention time= 4,916.4 min calculated for 1.587 af (44% of inflow) Center-of-Mass det. time= 2,818.0 min ( 11,565.3 - 8,747.3 ) Volume Invert Avail.Storage Storage Description #1 975.00' 3.430 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 975.00 0.230 0.000 0.000 977.00 1.560 1.790 1.790 978.00 1.720 1.640 3.430 Device Routing Invert Outlet Devices #1 Primary 977.00'8.0" Vert. Orifice/Grate C= 0.580 Primary OutFlow Max=0.21 cfs @ 169.19 hrs HW=977.26' TW=970.09' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 0.21 cfs @ 1.68 fps) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 642HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-9: P-LU 2-9 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=11.210 ac Peak Elev=977.26' Storage=2.219 af 1.42 cfs 0.21 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 643HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU-2-16: P-LU-2-16 Inflow Area = 2.560 ac, 0.00% Impervious, Inflow Depth = 4.22" for Snowmelt_10d_100yr event Inflow = 0.35 cfs @ 121.24 hrs, Volume= 0.900 af Outflow = 0.30 cfs @ 122.28 hrs, Volume= 0.887 af, Atten= 14%, Lag= 62.7 min Primary = 0.30 cfs @ 122.28 hrs, Volume= 0.887 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 994.07' Surf.Area= 9,913 sf Storage= 902 cf Peak Elev= 994.34' @ 122.28 hrs Surf.Area= 10,772 sf Storage= 4,364 cf (3,462 cf above start) Plug-Flow detention time= 629.5 min calculated for 0.867 af (96% of inflow) Center-of-Mass det. time= 316.7 min ( 8,941.8 - 8,625.1 ) Volume Invert Avail.Storage Storage Description #1 994.00' 107,634 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 994.00 9,689 0 0 996.00 16,084 25,773 25,773 998.00 20,360 36,444 62,217 1,000.00 25,057 45,417 107,634 Device Routing Invert Outlet Devices #1 Primary 994.07'12.0" Round RCP_Round 12" L= 93.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 994.07' / 987.85' S= 0.0669 '/' Cc= 0.900 n= 0.013, Flow Area= 0.79 sf Primary OutFlow Max=0.30 cfs @ 122.28 hrs HW=994.34' TW=988.35' (Dynamic Tailwater) 1=RCP_Round 12" (Inlet Controls 0.30 cfs @ 1.76 fps) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 644HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU-2-16: P-LU-2-16 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=2.560 ac Peak Elev=994.34' Storage=4,364 cf 12.0" Round Culvert n=0.013 L=93.0' S=0.0669 '/' 0.35 cfs 0.30 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 645HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU10-1: P-LU 10-1 Inflow Area = 7.720 ac, 1.30% Impervious, Inflow Depth = 4.68" for Snowmelt_10d_100yr event Inflow = 1.15 cfs @ 121.26 hrs, Volume= 3.008 af Outflow = 1.11 cfs @ 121.60 hrs, Volume= 2.607 af, Atten= 4%, Lag= 20.4 min Primary = 1.11 cfs @ 121.60 hrs, Volume= 2.607 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 963.65' @ 121.60 hrs Surf.Area= 0.192 ac Storage= 0.496 af Plug-Flow detention time= 1,384.7 min calculated for 2.607 af (87% of inflow) Center-of-Mass det. time= 675.1 min ( 9,122.2 - 8,447.2 ) Volume Invert Avail.Storage Storage Description #1 958.00' 1.715 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 958.00 0.020 0.000 0.000 962.00 0.100 0.240 0.240 963.10 0.180 0.154 0.394 964.00 0.200 0.171 0.565 966.00 0.300 0.500 1.065 968.00 0.350 0.650 1.715 Device Routing Invert Outlet Devices #1 Primary 963.10'12.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 966.00'100.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=1.11 cfs @ 121.60 hrs HW=963.65' TW=0.00' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 1.11 cfs @ 2.52 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=958.00' TW=0.00' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 646HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU10-1: P-LU 10-1 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=7.720 ac Peak Elev=963.65' Storage=0.496 af 1.15 cfs 1.11 cfs 1.11 cfs 0.00 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 647HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W12: Wetland 12 Inflow Area = 0.734 ac, 6.42% Impervious, Inflow Depth = 4.22" for Snowmelt_10d_100yr event Inflow = 0.10 cfs @ 121.21 hrs, Volume= 0.258 af Outflow = 0.06 cfs @ 123.76 hrs, Volume= 0.176 af, Atten= 36%, Lag= 152.7 min Primary = 0.06 cfs @ 123.76 hrs, Volume= 0.176 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 994.14' @ 123.76 hrs Surf.Area= 0.113 ac Storage= 0.095 af Plug-Flow detention time= 2,856.0 min calculated for 0.176 af (68% of inflow) Center-of-Mass det. time= 1,394.2 min ( 9,942.1 - 8,547.9 ) Volume Invert Avail.Storage Storage Description #1 992.50' 0.430 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 992.50 0.002 0.000 0.000 993.00 0.035 0.009 0.009 993.50 0.070 0.026 0.035 994.00 0.104 0.043 0.079 994.50 0.134 0.059 0.138 995.00 0.171 0.076 0.215 995.50 0.210 0.095 0.310 996.00 0.269 0.120 0.430 Device Routing Invert Outlet Devices #1 Primary 994.00'15.0" Round RCP_Round 15" L= 45.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 994.00' / 993.82' S= 0.0040 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf Primary OutFlow Max=0.06 cfs @ 123.76 hrs HW=994.14' TW=967.55' (Dynamic Tailwater) 1=RCP_Round 15" (Barrel Controls 0.06 cfs @ 1.24 fps) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 648HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W12: Wetland 12 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.11 0.105 0.1 0.095 0.09 0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Inflow Area=0.734 ac Peak Elev=994.14' Storage=0.095 af 15.0" Round Culvert n=0.013 L=45.0' S=0.0040 '/' 0.10 cfs 0.06 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 649HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W13: Wetland 13 Inflow Area = 1.729 ac, 6.61% Impervious, Inflow Depth = 4.34" for Snowmelt_10d_100yr event Inflow = 0.24 cfs @ 121.31 hrs, Volume= 0.625 af Outflow = 0.23 cfs @ 121.52 hrs, Volume= 0.498 af, Atten= 2%, Lag= 12.8 min Primary = 0.23 cfs @ 121.52 hrs, Volume= 0.498 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 993.04' @ 121.52 hrs Surf.Area= 10,675 sf Storage= 5,986 cf Plug-Flow detention time= 1,878.4 min calculated for 0.498 af (80% of inflow) Center-of-Mass det. time= 855.5 min ( 9,373.7 - 8,518.2 ) Volume Invert Avail.Storage Storage Description #1 991.50' 22,402 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.50 17 0 0 992.00 648 166 166 993.00 10,069 5,359 5,525 994.00 23,685 16,877 22,402 Device Routing Invert Outlet Devices #1 Primary 993.00'10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=0.23 cfs @ 121.52 hrs HW=993.04' TW=987.12' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.23 cfs @ 0.53 fps) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 650HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W13: Wetland 13 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=1.729 ac Peak Elev=993.04' Storage=5,986 cf 0.24 cfs 0.23 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 651HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W14: Wetland 14 Inflow Area = 5.397 ac, 16.24% Impervious, Inflow Depth > 4.22" for Snowmelt_10d_100yr event Inflow = 0.76 cfs @ 121.34 hrs, Volume= 1.899 af Outflow = 0.76 cfs @ 121.45 hrs, Volume= 1.865 af, Atten= 0%, Lag= 6.6 min Primary = 0.76 cfs @ 121.45 hrs, Volume= 1.865 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 987.12' @ 121.45 hrs Surf.Area= 4,607 sf Storage= 1,955 cf Plug-Flow detention time= 248.3 min calculated for 1.865 af (98% of inflow) Center-of-Mass det. time= 141.7 min ( 8,800.2 - 8,658.5 ) Volume Invert Avail.Storage Storage Description #1 986.00' 27,529 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 986.00 261 0 0 986.50 1,045 327 327 987.00 3,560 1,151 1,478 987.50 8,040 2,900 4,378 988.00 9,380 4,355 8,733 988.50 11,195 5,144 13,877 989.00 13,765 6,240 20,117 989.50 15,884 7,412 27,529 Device Routing Invert Outlet Devices #1 Primary 987.00'8.0' long x 4.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Primary OutFlow Max=0.76 cfs @ 121.45 hrs HW=987.12' TW=984.76' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.76 cfs @ 0.81 fps) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 652HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W14: Wetland 14 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=5.397 ac Peak Elev=987.12' Storage=1,955 cf 0.76 cfs 0.76 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 653HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W2: Wetland 2 Inflow = 6.39 cfs @ 121.30 hrs, Volume= 33.467 af Outflow = 5.77 cfs @ 122.72 hrs, Volume= 33.462 af, Atten= 10%, Lag= 85.4 min Primary = 5.77 cfs @ 122.72 hrs, Volume= 33.013 af Secondary = 0.24 cfs @ 5.29 hrs, Volume= 0.449 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 969.90' Surf.Area= 2,833 sf Storage= 1,514 cf Peak Elev= 970.53' @ 122.72 hrs Surf.Area= 20,936 sf Storage= 8,179 cf (6,665 cf above start) Plug-Flow detention time= 19.2 min calculated for 33.427 af (100% of inflow) Center-of-Mass det. time= 3.4 min ( 9,721.1 - 9,717.7 ) Volume Invert Avail.Storage Storage Description #1 967.00' 1,052,847 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 967.00 10 0 0 968.85 12 20 20 970.00 3,102 1,791 1,811 972.00 70,418 73,520 75,331 974.00 154,658 225,076 300,407 976.00 189,337 343,995 644,402 978.00 219,108 408,445 1,052,847 Device Routing Invert Outlet Devices #1 Primary 967.50'18.0" Round MH 44 to MH 41 L= 40.4' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 967.50' / 967.00' S= 0.0124 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.77 sf #2 Device 1 973.60'48.0" Horiz. OCS C= 0.600 Limited to weir flow at low heads #3 Device 1 967.70'12.0" Round FES 42 to MH 44 L= 13.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 967.70' / 967.50' S= 0.0154 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 0.79 sf #4 Device 3 969.90'20.0' long x 5.0' breadth Ditch Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #5 Secondary 968.58'30.0" Round Culvert to LU 2-2 L= 85.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 968.58' / 968.08' S= 0.0059 '/' Cc= 0.900 n= 0.012, Flow Area= 4.91 sf Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 654HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Primary OutFlow Max=5.77 cfs @ 122.72 hrs HW=970.53' TW=965.38' (Dynamic Tailwater) 1=MH 44 to MH 41 (Passes 5.77 cfs of 12.85 cfs potential flow) 2=OCS ( Controls 0.00 cfs) 3=FES 42 to MH 44 (Inlet Controls 5.77 cfs @ 7.35 fps) 4=Ditch Berm (Passes 5.77 cfs of 26.96 cfs potential flow) Secondary OutFlow Max=0.23 cfs @ 5.29 hrs HW=969.90' TW=969.90' (Dynamic Tailwater) 5=Culvert to LU 2-2 (Outlet Controls 0.23 cfs @ 0.13 fps) Pond W2: Wetland 2 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Peak Elev=970.53' Storage=8,179 cf 6.39 cfs 5.77 cfs 5.77 cfs 0.24 cfs Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 655HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W6: Wetland 6 Inflow Area = 1.668 ac, 12.44% Impervious, Inflow Depth = 3.35" for Snowmelt_10d_100yr event Inflow = 0.22 cfs @ 121.28 hrs, Volume= 0.466 af Outflow = 0.05 cfs @ 135.73 hrs, Volume= 0.210 af, Atten= 78%, Lag= 867.0 min Primary = 0.05 cfs @ 135.73 hrs, Volume= 0.210 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,001.01' @ 135.73 hrs Surf.Area= 10,093 sf Storage= 11,212 cf Plug-Flow detention time= 3,855.5 min calculated for 0.210 af (45% of inflow) Center-of-Mass det. time= 2,027.3 min ( 10,642.2 - 8,615.0 ) Volume Invert Avail.Storage Storage Description #1 999.00' 16,680 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 999.00 2,453 0 0 999.50 3,157 1,403 1,403 1,000.00 5,185 2,086 3,488 1,000.50 7,715 3,225 6,713 1,001.00 10,073 4,447 11,160 1,001.50 12,007 5,520 16,680 Device Routing Invert Outlet Devices #1 Primary 1,001.00'50.0' long x 25.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.05 cfs @ 135.73 hrs HW=1,001.01' TW=999.52' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.05 cfs @ 0.19 fps) Bluffs at Lake Lucy Proposed Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_Proposed Conditions_09 Printed 9/23/2020Prepared by AE2S Page 656HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W6: Wetland 6 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.24 0.23 0.22 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Inflow Area=1.668 ac Peak Elev=1,001.01' Storage=11,212 cf 0.22 cfs 0.05 cfs Wetland 1 Wetland 2 300S 300 301S 301 400S Proposed CR 117 401S 401 500S 500 600S 600 700S 700 701S 701 800S 800 900S 900 AS A BLL_EX112 BLL_EX112 BLL_EX113 BLL_EX113 BLL_EX206 BLL_EX206 BLL_EX303 BLL_EX303 BLL_EX304 BLL_EX304 BLL_EX501 BLL_EX501 BLL_EX502 BLL_EX502 BLL_EX503 BLL_EX503 BLL_EX504 BLL_EX504 LU 10-1 LU 10-1 LU 2-1 LU 2-1 LU 2-10 LU 2-10 LU 2-11 LU 2-11 LU 2-12 LU 2-12LU 2-13 LU 2-13 LU 2-14 LU 2-14 LU 2-15 LU 2-15 LU 2-16 LU 2-16 LU 2-18 LU 2-18 LU 2-2 LU 2-2 LU 2-3 LU 2-3 LU 2-4 LU 2-4 LU 2-5 LU 2-5 LU 2-7 LU 2-7 LU 2-8 LU 2-8 LU 2-9 LU 2-9 W11S W11 W12S W12 W13S W13 W14S W14 W1nS W1n W2S W2 W6S W6 WLS WL Pipe from W2 to W1 Pipe from Wetland 2 to Wetland 1 300P Pond with IESF 400P County pond with IESF 404P P-LU 2-2 490 CB CB inlet 491P CB CB inlet 500P IESF 600P rain garden 800P rain garden 900P IESF CB-9 CB EX CB-9 LUCY LAKE LUCY P-LU 2-1 P-LU 2-1 P-LU 2-10 P-LU 2-10 P-LU 2-11 P-LU 2-11 P-LU 2-12 P-LU 2-12 P-LU 2-13 P-LU 2-13 P-LU 2-3 P-LU 2-3 (LAKE HARRISON) P-LU 2-4 P-LU 2-4 P-LU 2-5 P-LU 2-5 P-LU 2-6 Wetland 11 P-LU 2-7 P-LU 2-7 P-LU 2-8 P-LU 2-8 P-LU 2-9 P-LU 2-9 P-LU-2-16 P-LU-2-16 P-LU10-1 P-LU 10-1 W12 Wetland 12 W13 Wetland 13 W14 Wetland 14 W2 Wetland 2 W6 Wetland 6 Routing Diagram for BluffsLL_ExistingConditions_09.03.2020 Prepared by AE2S, Printed 9/23/2020 HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Subcat Reach Pond Link Bluffs at Lake Lucy Existing BluffsLL_ExistingConditions_09.03.2020 Printed 9/23/2020Prepared by AE2S Page 2HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Area Listing (all nodes) Area (acres) CN Description (subcatchment-numbers) 16.570 78 (LU 10-1, LU 2-5) 79.621 76 (LU 2-1) 63.240 73 (LU 2-10, LU 2-3, LU 2-8) 21.970 75 (LU 2-11) 29.420 72 (LU 2-12, LU 2-13, LU 2-15) 37.130 71 (LU 2-14, LU 2-9) 14.470 74 (LU 2-16, LU 2-2) 17.084 77 (LU 2-18, LU 2-7) 12.300 79 (LU 2-4) 33.335 74 75% Grass cover Good, HSG C (300S, 301S, 401S, 500S, 600S, 700S, 701S, 800S, 900S, AS, W11S, W12S, W13S, W14S, W1nS, W2S, W6S, WLS) 0.500 74 >75% Grass cover, Good, HSG C (400S) 1.060 79 CN from Previous Model (BLL_EX112, BLL_EX206, BLL_EX303) 0.269 74 County Ditch, HSG C (W1nS, W2S) 0.103 98 County Road Surface, HSG C (W1nS, W2S) 0.080 98 Existing County Road (BLL_EX304) 0.560 98 Existing homes (BLL_EX304, BLL_EX504) 3.100 74 Existing lawn (BLL_EX304, BLL_EX501, BLL_EX502, BLL_EX503, BLL_EX504) 0.418 98 Existing road and sidewalk (BLL_EX501, BLL_EX502, W2S) 20.681 98 Impervious, HSG C (300S, 301S, 401S, 500S, 600S, 700S, 701S, 800S, 900S, W11S, W12S, W13S, W14S, W6S) 10.654 71 Meadow, HSG C (300S, 301S, 401S, 500S, 600S, 700S, 701S, 800S, W11S, W14S, W6S) 1.700 98 Paved roads w/curbs & sewers, HSG C (400S) 1.177 98 Water Surface, HSG C (301S, 401S) 3.192 74 Wetland, HSG C (W11S, W12S, W13S, W14S, W2S, W6S) 5.621 70 Woods Good, HSG C (300S, 401S, 600S, 700S, 900S, W11S, W12S, W13S, W14S) 26.935 70 Woods, Good, HSG C (AS, BLL_EX113, BLL_EX304, W1nS, W2S, WLS) 401.189 75 TOTAL AREA Bluffs at Lake Lucy Existing BluffsLL_ExistingConditions_09.03.2020 Printed 9/23/2020Prepared by AE2S Page 3HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Soil Listing (all nodes) Area (acres) Soil Group Subcatchment Numbers 0.000 HSG A 0.000 HSG B 104.166 HSG C 300S, 301S, 400S, 401S, 500S, 600S, 700S, 701S, 800S, 900S, AS, BLL_EX113, BLL_EX304, W11S, W12S, W13S, W14S, W1nS, W2S, W6S, WLS 0.000 HSG D 297.023 Other BLL_EX112, BLL_EX206, BLL_EX303, BLL_EX304, BLL_EX501, BLL_EX502, BLL_EX503, BLL_EX504, LU 10-1, LU 2-1, LU 2-10, LU 2-11, LU 2-12, LU 2-13, LU 2-14, LU 2-15, LU 2-16, LU 2-18, LU 2-2, LU 2-3, LU 2-4, LU 2-5, LU 2-7, LU 2-8, LU 2-9, W2S 401.189 TOTAL AREA Bluffs at Lake Lucy Existing BluffsLL_ExistingConditions_09.03.2020 Printed 9/23/2020Prepared by AE2S Page 4HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 0.000 0.000 291.805 291.805 LU 10- 1, LU 2-1 , LU 2-1 0, LU 2-1 1, LU 2-1 2, LU 2-1 3, LU 2-1 4, LU 2-1 5, LU 2-1 6, LU 2-1 8, LU 2-2 , LU 2-3 , LU 2-4 , LU 2-5 , LU 2-7 , Bluffs at Lake Lucy Existing BluffsLL_ExistingConditions_09.03.2020 Printed 9/23/2020Prepared by AE2S Page 5HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) (continued) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 33.335 0.000 0.000 33.335 75% Grass cover Good 30 0S, 30 1S, 40 1S, 50 0S, 60 0S, 70 0S, 70 1S, 80 0S, 90 0S, AS, W1 1S, W1 2S, W1 3S, W1 4S, W1 nS, W2 Bluffs at Lake Lucy Existing BluffsLL_ExistingConditions_09.03.2020 Printed 9/23/2020Prepared by AE2S Page 6HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) (continued) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 0.500 0.000 0.000 0.500 >75% Grass cover, Good 40 0S 0.000 0.000 0.000 0.000 1.060 1.060 CN from Previous Model BL L_ EX 11 2, BL L_ EX 20 6, BL L_ EX 30 3 0.000 0.000 0.269 0.000 0.000 0.269 County Ditch W1 nS, W2 S 0.000 0.000 0.103 0.000 0.000 0.103 County Road Surface W1 nS, W2 S 0.000 0.000 0.000 0.000 0.080 0.080 Existing County Road BL L_ EX 30 4 0.000 0.000 0.000 0.000 0.560 0.560 Existing homes BL L_ EX 30 4, BL L_ EX 50 4 Bluffs at Lake Lucy Existing BluffsLL_ExistingConditions_09.03.2020 Printed 9/23/2020Prepared by AE2S Page 7HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) (continued) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 0.000 0.000 3.100 3.100 Existing lawn BL L_ EX 30 4, BL L_ EX 50 1, BL L_ EX 50 2, BL L_ EX 50 3, BL L_ EX 50 4 0.000 0.000 0.000 0.000 0.418 0.418 Existing road and sidewalk BL L_ EX 50 1, BL L_ EX 50 2, W2 S 0.000 0.000 20.681 0.000 0.000 20.681 Impervious 30 0S, 30 1S, 40 1S, Bluffs at Lake Lucy Existing BluffsLL_ExistingConditions_09.03.2020 Printed 9/23/2020Prepared by AE2S Page 8HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) (continued) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 10.654 0.000 0.000 10.654 Meadow 30 0S, 30 1S, 40 1S, 50 0S, 60 0S, 70 0S, 70 1S, 80 0S, W1 1S, W1 4S, W6 S 0.000 0.000 1.700 0.000 0.000 1.700 Paved roads w/curbs & sewers 40 0S 0.000 0.000 1.177 0.000 0.000 1.177 Water Surface 30 1S, 40 1S 0.000 0.000 3.192 0.000 0.000 3.192 Wetland W1 1S, W1 2S, Bluffs at Lake Lucy Existing BluffsLL_ExistingConditions_09.03.2020 Printed 9/23/2020Prepared by AE2S Page 9HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) (continued) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 5.621 0.000 0.000 5.621 Woods Good 30 0S, 40 1S, 60 0S, 70 0S, 90 0S, W1 1S, W1 2S, W1 3S, W1 4S 0.000 0.000 26.935 0.000 0.000 26.935 Woods, Good AS, BL L_ EX 11 3, BL L_ EX 30 4, W1 nS, W2 S, WL S Bluffs at Lake Lucy Existing BluffsLL_ExistingConditions_09.03.2020 Printed 9/23/2020Prepared by AE2S Page 10HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) (continued) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 104.166 0.000 297.023 401.189 TOTAL AREA Bluffs at Lake Lucy Existing BluffsLL_ExistingConditions_09.03.2020 Printed 9/23/2020Prepared by AE2S Page 11HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pipe Listing (all nodes) Line# Node Number In-Invert (feet) Out-Invert (feet) Length (feet) Slope (ft/ft) n Diam/Width (inches) Height (inches) Inside-Fill (inches) 1 Pipe from W2 to W1 965.96 964.83 65.8 0.0172 0.025 27.0 0.0 0.0 2 300P 960.22 960.00 43.0 0.0051 0.013 42.0 0.0 0.0 3 300P 960.00 960.00 10.0 0.0000 0.013 42.0 0.0 0.0 4 300P 960.22 960.00 43.0 0.0051 0.013 36.0 0.0 0.0 5 400P 982.00 982.00 29.0 0.0000 0.013 15.0 0.0 0.0 6 400P 981.75 982.00 22.0 -0.0114 0.013 15.0 0.0 0.0 7 404P 968.58 968.08 85.0 0.0059 0.012 30.0 0.0 0.0 8 404P 971.97 972.01 114.0 -0.0004 0.011 15.0 0.0 0.0 9 CB-9 987.85 980.75 94.0 0.0755 0.025 24.0 0.0 0.0 10 P-LU 2-11 972.01 971.97 114.0 0.0004 0.011 15.0 0.0 0.0 11 P-LU 2-13 989.60 983.00 110.0 0.0600 0.011 24.0 0.0 0.0 12 P-LU 2-5 962.98 962.83 30.0 0.0050 0.013 18.0 0.0 0.0 13 P-LU 2-5 963.38 964.83 15.0 -0.0967 0.013 15.0 0.0 0.0 14 P-LU 2-6 982.57 982.05 50.0 0.0104 0.013 15.0 0.0 0.0 15 P-LU 2-7 995.27 994.07 60.8 0.0197 0.013 12.0 0.0 0.0 16 P-LU-2-16 994.07 987.85 93.0 0.0669 0.013 12.0 0.0 0.0 17 W12 994.00 993.82 45.0 0.0040 0.013 15.0 0.0 0.0 18 W2 967.70 965.96 210.0 0.0083 0.025 18.0 0.0 0.0 19 W2 968.08 968.58 85.0 -0.0059 0.120 30.0 0.0 0.0 Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 12HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Time span=0.00-250.00 hrs, dt=0.002 hrs, 125001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Sim-Route method - Pond routing by Sim-Route method Runoff Area=38.561 ac 45.60% Impervious Runoff Depth=1.65"Subcatchment 300S: 300 Flow Length=1,575' Slope=0.0350 '/' Tc=20.7 min CN=WQ Runoff=59.37 cfs 5.293 af Runoff Area=5.606 ac 29.33% Impervious Runoff Depth=1.31"Subcatchment 301S: 301 Flow Length=275' Slope=0.1030 '/' Tc=3.5 min CN=WQ Runoff=13.52 cfs 0.614 af Runoff Area=2.200 ac 77.27% Impervious Runoff Depth=2.23"Subcatchment 400S: Proposed CR 117 Tc=20.0 min CN=WQ Runoff=4.69 cfs 0.408 af Runoff Area=2.600 ac 17.79% Impervious Runoff Depth=1.08"Subcatchment 401S: 401 Flow Length=500' Slope=0.0500 '/' Tc=8.9 min CN=WQ Runoff=3.87 cfs 0.235 af Runoff Area=1.766 ac 29.44% Impervious Runoff Depth=1.35"Subcatchment 500S: 500 Flow Length=510' Slope=0.0400 '/' Tc=9.0 min CN=WQ Runoff=3.32 cfs 0.199 af Runoff Area=0.529 ac 14.88% Impervious Runoff Depth=1.02"Subcatchment 600S: 600 Flow Length=495' Slope=0.0400 '/' Tc=10.2 min CN=WQ Runoff=0.69 cfs 0.045 af Runoff Area=8.313 ac 0.56% Impervious Runoff Depth=0.70"Subcatchment 700S: 700 Flow Length=500' Slope=0.0900 '/' Tc=7.9 min CN=WQ Runoff=8.19 cfs 0.486 af Runoff Area=0.636 ac 16.77% Impervious Runoff Depth=1.05"Subcatchment 701S: 701 Flow Length=255' Slope=0.0400 '/' Tc=6.0 min CN=WQ Runoff=1.06 cfs 0.055 af Runoff Area=1.094 ac 15.23% Impervious Runoff Depth=1.04"Subcatchment 800S: 800 Flow Length=355' Slope=0.0400 '/' Tc=7.8 min CN=WQ Runoff=1.65 cfs 0.095 af Runoff Area=1.215 ac 34.66% Impervious Runoff Depth=1.45"Subcatchment 900S: 900 Flow Length=470' Slope=0.0300 '/' Tc=9.4 min CN=WQ Runoff=2.41 cfs 0.147 af Runoff Area=0.517 ac 0.00% Impervious Runoff Depth=0.73"Subcatchment AS: A Flow Length=250' Slope=0.0480 '/' Tc=6.0 min CN=WQ Runoff=0.60 cfs 0.032 af Runoff Area=0.520 ac 0.00% Impervious Runoff Depth=1.09"Subcatchment BLL_EX112: BLL_EX112 Tc=15.0 min CN=79 Runoff=0.67 cfs 0.047 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=0.64"Subcatchment BLL_EX113: BLL_EX113 Flow Length=180' Slope=0.0830 '/' Tc=20.5 min CN=70 Runoff=0.02 cfs 0.002 af Runoff Area=0.310 ac 0.00% Impervious Runoff Depth=1.09"Subcatchment BLL_EX206: BLL_EX206 Tc=15.0 min CN=79 Runoff=0.40 cfs 0.028 af Runoff Area=0.230 ac 0.00% Impervious Runoff Depth=1.09"Subcatchment BLL_EX303: BLL_EX303 Flow Length=800' Tc=46.2 min CN=79 Runoff=0.16 cfs 0.021 af Runoff Area=2.850 ac 16.84% Impervious Runoff Depth=1.11"Subcatchment BLL_EX304: BLL_EX304 Flow Length=300' Slope=0.1660 '/' Tc=9.5 min CN=WQ Runoff=4.26 cfs 0.263 af Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 13HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=0.310 ac 67.74% Impervious Runoff Depth=2.05"Subcatchment BLL_EX501: BLL_EX501 Tc=15.0 min CN=WQ Runoff=0.70 cfs 0.053 af Runoff Area=0.270 ac 62.96% Impervious Runoff Depth=1.97"Subcatchment BLL_EX502: BLL_EX502 Tc=15.0 min CN=WQ Runoff=0.58 cfs 0.044 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=0.83"Subcatchment BLL_EX503: BLL_EX503 Tc=15.0 min CN=74 Runoff=0.03 cfs 0.002 af Runoff Area=1.030 ac 15.53% Impervious Runoff Depth=1.11"Subcatchment BLL_EX504: BLL_EX504 Tc=15.0 min CN=WQ Runoff=1.26 cfs 0.095 af Runoff Area=7.420 ac 0.00% Impervious Runoff Depth=1.04"Subcatchment LU 10-1: LU 10-1 Tc=6.0 min CN=78 Runoff=13.29 cfs 0.641 af Runoff Area=79.621 ac 0.00% Impervious Runoff Depth=0.93"Subcatchment LU 2-1: LU 2-1 Tc=52.0 min CN=76 Runoff=41.77 cfs 6.161 af Runoff Area=9.880 ac 0.00% Impervious Runoff Depth=0.78"Subcatchment LU 2-10: LU 2-10 Tc=6.0 min CN=73 Runoff=12.46 cfs 0.641 af Runoff Area=21.970 ac 0.00% Impervious Runoff Depth=0.88"Subcatchment LU 2-11: LU 2-11 Tc=12.0 min CN=75 Runoff=24.15 cfs 1.605 af Runoff Area=9.720 ac 0.00% Impervious Runoff Depth=0.73"Subcatchment LU 2-12: LU 2-12 Tc=6.0 min CN=72 Runoff=11.30 cfs 0.593 af Runoff Area=15.390 ac 0.00% Impervious Runoff Depth=0.73"Subcatchment LU 2-13: LU 2-13 Tc=7.0 min CN=72 Runoff=16.92 cfs 0.939 af Runoff Area=25.920 ac 0.00% Impervious Runoff Depth=0.69"Subcatchment LU 2-14: LU 2-14 Tc=12.0 min CN=71 Runoff=20.63 cfs 1.483 af Runoff Area=4.310 ac 0.00% Impervious Runoff Depth=0.73"Subcatchment LU 2-15: LU 2-15 Tc=4.0 min CN=72 Runoff=5.70 cfs 0.263 af Runoff Area=2.560 ac 0.00% Impervious Runoff Depth=0.83"Subcatchment LU 2-16: LU 2-16 Tc=4.0 min CN=74 Runoff=3.95 cfs 0.176 af Runoff Area=8.180 ac 0.00% Impervious Runoff Depth=0.98"Subcatchment LU 2-18: LU 2-18 Tc=7.0 min CN=77 Runoff=12.99 cfs 0.669 af Runoff Area=11.910 ac 0.00% Impervious Runoff Depth=0.83"Subcatchment LU 2-2: LU 2-2 Tc=7.0 min CN=74 Runoff=15.33 cfs 0.821 af Runoff Area=47.530 ac 0.00% Impervious Runoff Depth=0.78"Subcatchment LU 2-3: LU 2-3 Tc=17.0 min CN=73 Runoff=37.83 cfs 3.084 af Runoff Area=12.300 ac 0.00% Impervious Runoff Depth=1.09"Subcatchment LU 2-4: LU 2-4 Tc=8.0 min CN=79 Runoff=21.06 cfs 1.122 af Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 14HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=9.150 ac 0.00% Impervious Runoff Depth=1.04"Subcatchment LU 2-5: LU 2-5 Tc=7.0 min CN=78 Runoff=15.50 cfs 0.791 af Runoff Area=8.904 ac 0.00% Impervious Runoff Depth=0.98"Subcatchment LU 2-7: LU 2-7 Tc=7.0 min CN=77 Runoff=14.14 cfs 0.729 af Runoff Area=5.830 ac 0.00% Impervious Runoff Depth=0.78"Subcatchment LU 2-8: LU 2-8 Tc=5.0 min CN=73 Runoff=7.83 cfs 0.378 af Runoff Area=11.210 ac 0.00% Impervious Runoff Depth=0.69"Subcatchment LU 2-9: LU 2-9 Tc=7.0 min CN=71 Runoff=11.31 cfs 0.642 af Runoff Area=5.464 ac 5.19% Impervious Runoff Depth=0.87"Subcatchment W11S: W11 Flow Length=650' Slope=0.0380 '/' Tc=13.8 min CN=WQ Runoff=5.34 cfs 0.394 af Runoff Area=0.734 ac 6.42% Impervious Runoff Depth=0.87"Subcatchment W12S: W12 Flow Length=130' Slope=0.1200 '/' Tc=2.1 min CN=WQ Runoff=1.29 cfs 0.053 af Runoff Area=1.729 ac 6.61% Impervious Runoff Depth=0.92"Subcatchment W13S: W13 Flow Length=715' Slope=0.0900 '/' Tc=9.4 min CN=WQ Runoff=2.16 cfs 0.133 af Runoff Area=2.452 ac 13.89% Impervious Runoff Depth=1.03"Subcatchment W14S: W14 Flow Length=715' Slope=0.0900 '/' Tc=9.1 min CN=WQ Runoff=3.44 cfs 0.210 af Runoff Area=21.327 ac 0.14% Impervious Runoff Depth=0.67"Subcatchment W1nS: W1n Flow Length=1,350' Slope=0.1200 '/' Tc=15.1 min CN=WQ Runoff=14.69 cfs 1.192 af Runoff Area=3.189 ac 3.48% Impervious Runoff Depth=0.73"Subcatchment W2S: W2 Flow Length=725' Slope=0.0690 '/' Tc=12.1 min CN=WQ Runoff=2.68 cfs 0.195 af Runoff Area=0.575 ac 7.12% Impervious Runoff Depth=0.86"Subcatchment W6S: W6 Flow Length=200' Slope=0.0800 '/' Tc=3.7 min CN=WQ Runoff=0.90 cfs 0.041 af Runoff Area=5.297 ac 0.00% Impervious Runoff Depth=0.65"Subcatchment WLS: WL Flow Length=300' Slope=0.2500 '/' Tc=3.2 min CN=WQ Runoff=6.33 cfs 0.287 af Avg. Flow Depth=0.88' Max Vel=4.75 fps Inflow=6.89 cfs 3.419 afReach Pipe from W2 to W1: Pipe from 27.0" Round Pipe n=0.025 L=65.8' S=0.0172 '/' Capacity=21.10 cfs Outflow=6.89 cfs 3.419 af Peak Elev=967.18' Storage=442,812 cf Inflow=66.21 cfs 6.237 afPond 300P: Pond with IESF Primary=2.70 cfs 6.237 af Secondary=0.00 cfs 0.000 af Outflow=2.70 cfs 6.237 af Peak Elev=984.80' Storage=50,099 cf Inflow=7.37 cfs 0.643 afPond 400P: County pond with IESF Outflow=2.77 cfs 0.643 af Peak Elev=971.18' Storage=0.548 af Inflow=20.16 cfs 1.915 afPond 404P: P-LU 2-2 Primary=6.52 cfs 1.915 af Secondary=0.00 cfs 0.000 af Outflow=6.52 cfs 1.915 af Peak Elev=984.95' Inflow=2.92 cfs 0.330 afPond 490: CB inlet Primary=2.92 cfs 0.330 af Secondary=0.00 cfs 0.000 af Outflow=2.92 cfs 0.330 af Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 15HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=981.04' Inflow=0.00 cfs 0.000 afPond 491P: CB inlet Outflow=0.00 cfs 0.000 af Peak Elev=985.36' Storage=2,960 cf Inflow=3.32 cfs 0.199 afPond 500P: IESF Outflow=2.17 cfs 0.199 af Peak Elev=999.51' Storage=1,239 cf Inflow=0.69 cfs 0.045 afPond 600P: rain garden Discarded=0.01 cfs 0.040 af Primary=0.02 cfs 0.005 af Outflow=0.03 cfs 0.045 af Peak Elev=1,001.62' Storage=1,270 cf Inflow=1.65 cfs 0.095 afPond 800P: rain garden Discarded=0.01 cfs 0.035 af Primary=0.99 cfs 0.060 af Outflow=0.99 cfs 0.095 af Peak Elev=992.14' Storage=2,475 cf Inflow=2.41 cfs 0.147 afPond 900P: IESF Outflow=1.24 cfs 0.147 af Peak Elev=988.63' Inflow=3.43 cfs 0.903 afPond CB-9: EX CB-9 24.0" Round Culvert n=0.025 L=94.0' S=0.0755 '/' Outflow=3.43 cfs 0.903 af Inflow=27.54 cfs 56.037 afPond LUCY: LAKE LUCY Primary=27.54 cfs 56.037 af Peak Elev=957.63' Storage=178,625 cf Inflow=59.64 cfs 19.014 afPond P-LU 2-1: P-LU 2-1 Outflow=27.12 cfs 55.758 af Peak Elev=972.89' Storage=0.234 af Inflow=12.46 cfs 0.641 afPond P-LU 2-10: P-LU 2-10 Outflow=2.87 cfs 0.476 af Peak Elev=971.15' Storage=3.514 af Inflow=44.78 cfs 3.516 afPond P-LU 2-11: P-LU 2-11 15.0" Round Culvert n=0.011 L=114.0' S=0.0004 '/' Outflow=0.00 cfs 0.000 af Peak Elev=976.16' Storage=0.593 af Inflow=11.30 cfs 0.593 afPond P-LU 2-12: P-LU 2-12 Primary=0.00 cfs 0.000 af Secondary=0.00 cfs 0.000 af Outflow=0.00 cfs 0.000 af Peak Elev=989.97' Storage=0.600 af Inflow=16.92 cfs 0.939 afPond P-LU 2-13: P-LU 2-13 24.0" Round Culvert n=0.011 L=110.0' S=0.0600 '/' Outflow=0.82 cfs 0.427 af Peak Elev=992.27' Storage=3.102 af Inflow=37.83 cfs 3.102 afPond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Outflow=0.00 cfs 0.000 af Peak Elev=975.13' Storage=0.498 af Inflow=22.96 cfs 1.316 afPond P-LU 2-4: P-LU 2-4 Primary=5.98 cfs 0.938 af Secondary=3.95 cfs 0.058 af Outflow=9.93 cfs 0.996 af Peak Elev=965.52' Storage=0.778 af Inflow=15.50 cfs 0.791 afPond P-LU 2-5: P-LU 2-5 Outflow=1.97 cfs 0.810 af Peak Elev=979.84' Storage=93,177 cf Inflow=11.07 cfs 2.140 afPond P-LU 2-6: Wetland 11 15.0" Round Culvert n=0.013 L=50.0' S=0.0104 '/' Outflow=0.00 cfs 0.000 af Peak Elev=996.46' Storage=29,328 cf Inflow=14.14 cfs 0.729 afPond P-LU 2-7: P-LU 2-7 12.0" Round Culvert n=0.013 L=60.8' S=0.0197 '/' Outflow=3.14 cfs 0.728 af Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 16HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=996.10' Storage=0.375 af Inflow=7.83 cfs 0.378 afPond P-LU 2-8: P-LU 2-8 Primary=0.05 cfs 0.018 af Secondary=0.00 cfs 0.000 af Outflow=0.05 cfs 0.018 af Peak Elev=975.72' Storage=0.642 af Inflow=11.31 cfs 0.642 afPond P-LU 2-9: P-LU 2-9 Outflow=0.00 cfs 0.000 af Peak Elev=994.35' Storage=4,539 cf Inflow=3.95 cfs 0.176 afPond P-LU-2-16: P-LU-2-16 12.0" Round Culvert n=0.013 L=93.0' S=0.0669 '/' Outflow=0.33 cfs 0.175 af Peak Elev=963.46' Storage=0.460 af Inflow=13.88 cfs 0.673 afPond P-LU10-1: P-LU 10-1 Primary=0.51 cfs 0.279 af Secondary=0.00 cfs 0.000 af Outflow=0.51 cfs 0.279 af Peak Elev=993.73' Storage=0.053 af Inflow=1.29 cfs 0.053 afPond W12: Wetland 12 15.0" Round Culvert n=0.013 L=45.0' S=0.0040 '/' Outflow=0.00 cfs 0.000 af Peak Elev=993.01' Storage=5,634 cf Inflow=2.16 cfs 0.133 afPond W13: Wetland 13 Outflow=0.03 cfs 0.006 af Peak Elev=987.28' Storage=2,836 cf Inflow=3.46 cfs 0.364 afPond W14: Wetland 14 Outflow=2.92 cfs 0.330 af Peak Elev=971.16' Storage=28,169 cf Inflow=21.17 cfs 3.775 afPond W2: Wetland 2 Primary=6.89 cfs 3.419 af Secondary=0.00 cfs 0.000 af Tertiary=0.10 cfs 0.356 af Outflow=6.89 cfs 3.775 af Peak Elev=1,000.16' Storage=4,402 cf Inflow=1.31 cfs 0.101 afPond W6: Wetland 6 Outflow=0.00 cfs 0.000 af Total Runoff Area = 401.189 ac Runoff Volume = 31.408 af Average Runoff Depth = 0.94" 93.84% Pervious = 376.470 ac 6.16% Impervious = 24.719 ac Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 17HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 300S: 300 Runoff = 59.37 cfs @ 12.28 hrs, Volume= 5.293 af, Depth= 1.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.755 70 Woods Good, HSG C * 0.637 71 Meadow, HSG C * 19.586 74 75% Grass cover Good, HSG C * 17.584 98 Impervious, HSG C 38.561 Weighted Average 20.977 54.40% Pervious Area 17.584 45.60% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.7 1,575 0.0350 1.27 Lag/CN Method, Subcatchment 300S: 300 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=38.561 ac Runoff Volume=5.293 af Runoff Depth=1.65" Flow Length=1,575' Slope=0.0350 '/' Tc=20.7 min CN=WQ 59.37 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 18HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 301S: 301 Runoff = 13.52 cfs @ 12.06 hrs, Volume= 0.614 af, Depth= 1.31" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.991 98 Water Surface, HSG C * 1.761 71 Meadow, HSG C * 2.200 74 75% Grass cover Good, HSG C * 0.654 98 Impervious, HSG C 5.606 Weighted Average 3.961 70.67% Pervious Area 1.644 29.33% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.5 275 0.1030 1.30 Lag/CN Method, Subcatchment 301S: 301 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=5.606 ac Runoff Volume=0.614 af Runoff Depth=1.31" Flow Length=275' Slope=0.1030 '/' Tc=3.5 min CN=WQ 13.52 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 19HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 400S: Proposed CR 117 Runoff = 4.69 cfs @ 12.25 hrs, Volume= 0.408 af, Depth= 2.23" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description 1.700 98 Paved roads w/curbs & sewers, HSG C 0.500 74 >75% Grass cover, Good, HSG C 2.200 Weighted Average 0.500 22.73% Pervious Area 1.700 77.27% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.0 Direct Entry, Subcatchment 400S: Proposed CR 117 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=2.200 ac Runoff Volume=0.408 af Runoff Depth=2.23" Tc=20.0 min CN=WQ 4.69 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 20HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 401S: 401 Runoff = 3.87 cfs @ 12.13 hrs, Volume= 0.235 af, Depth= 1.08" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.243 70 Woods Good, HSG C * 0.186 98 Water Surface, HSG C * 0.897 71 Meadow, HSG C * 0.997 74 75% Grass cover Good, HSG C * 0.276 98 Impervious, HSG C 2.600 Weighted Average 2.138 82.21% Pervious Area 0.462 17.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.9 500 0.0500 0.93 Lag/CN Method, Subcatchment 401S: 401 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=2.600 ac Runoff Volume=0.235 af Runoff Depth=1.08" Flow Length=500' Slope=0.0500 '/' Tc=8.9 min CN=WQ 3.87 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 21HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 500S: 500 Runoff = 3.32 cfs @ 12.13 hrs, Volume= 0.199 af, Depth= 1.35" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.097 71 Meadow, HSG C * 1.149 74 75% Grass cover Good, HSG C * 0.520 98 Impervious, HSG C 1.766 Weighted Average 1.246 70.56% Pervious Area 0.520 29.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.0 510 0.0400 0.95 Lag/CN Method, Subcatchment 500S: 500 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=1.766 ac Runoff Volume=0.199 af Runoff Depth=1.35" Flow Length=510' Slope=0.0400 '/' Tc=9.0 min CN=WQ 3.32 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 22HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 600S: 600 Runoff = 0.69 cfs @ 12.15 hrs, Volume= 0.045 af, Depth= 1.02" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.066 70 Woods Good, HSG C * 0.221 71 Meadow, HSG C * 0.163 74 75% Grass cover Good, HSG C * 0.079 98 Impervious, HSG C 0.529 Weighted Average 0.450 85.12% Pervious Area 0.079 14.88% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.2 495 0.0400 0.81 Lag/CN Method, Subcatchment 600S: 600 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.529 ac Runoff Volume=0.045 af Runoff Depth=1.02" Flow Length=495' Slope=0.0400 '/' Tc=10.2 min CN=WQ 0.69 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 23HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 700S: 700 Runoff = 8.19 cfs @ 12.12 hrs, Volume= 0.486 af, Depth= 0.70" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 2.897 70 Woods Good, HSG C * 4.268 71 Meadow, HSG C * 1.101 74 75% Grass cover Good, HSG C * 0.047 98 Impervious, HSG C 8.313 Weighted Average 8.266 99.44% Pervious Area 0.047 0.56% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.9 500 0.0900 1.05 Lag/CN Method, Subcatchment 700S: 700 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=8.313 ac Runoff Volume=0.486 af Runoff Depth=0.70" Flow Length=500' Slope=0.0900 '/' Tc=7.9 min CN=WQ 8.19 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 24HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 701S: 701 Runoff = 1.06 cfs @ 12.09 hrs, Volume= 0.055 af, Depth= 1.05" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.380 71 Meadow, HSG C * 0.149 74 75% Grass cover Good, HSG C * 0.107 98 Impervious, HSG C 0.636 Weighted Average 0.529 83.23% Pervious Area 0.107 16.77% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 255 0.0400 0.71 Lag/CN Method, Subcatchment 701S: 701 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.636 ac Runoff Volume=0.055 af Runoff Depth=1.05" Flow Length=255' Slope=0.0400 '/' Tc=6.0 min CN=WQ 1.06 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 25HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 800S: 800 Runoff = 1.65 cfs @ 12.11 hrs, Volume= 0.095 af, Depth= 1.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.484 71 Meadow, HSG C * 0.443 74 75% Grass cover Good, HSG C * 0.167 98 Impervious, HSG C 1.094 Weighted Average 0.927 84.77% Pervious Area 0.167 15.23% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.8 355 0.0400 0.76 Lag/CN Method, Subcatchment 800S: 800 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=1.094 ac Runoff Volume=0.095 af Runoff Depth=1.04" Flow Length=355' Slope=0.0400 '/' Tc=7.8 min CN=WQ 1.65 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 26HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 900S: 900 Runoff = 2.41 cfs @ 12.13 hrs, Volume= 0.147 af, Depth= 1.45" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.000 70 Woods Good, HSG C * 0.794 74 75% Grass cover Good, HSG C * 0.421 98 Impervious, HSG C 1.215 Weighted Average 0.794 65.34% Pervious Area 0.421 34.66% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 470 0.0300 0.83 Lag/CN Method, Subcatchment 900S: 900 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=1.215 ac Runoff Volume=0.147 af Runoff Depth=1.45" Flow Length=470' Slope=0.0300 '/' Tc=9.4 min CN=WQ 2.41 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 27HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment AS: A Runoff = 0.60 cfs @ 12.09 hrs, Volume= 0.032 af, Depth= 0.73" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.262 70 Woods, Good, HSG C * 0.255 74 75% Grass cover Good, HSG C 0.517 Weighted Average 0.517 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 250 0.0480 0.69 Lag/CN Method, Subcatchment AS: A Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.517 ac Runoff Volume=0.032 af Runoff Depth=0.73" Flow Length=250' Slope=0.0480 '/' Tc=6.0 min CN=WQ 0.60 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 28HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX112: BLL_EX112 Runoff = 0.67 cfs @ 12.22 hrs, Volume= 0.047 af, Depth= 1.09" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.520 79 CN from Previous Model 0.520 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX112: BLL_EX112 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.520 ac Runoff Volume=0.047 af Runoff Depth=1.09" Tc=15.0 min CN=79 0.67 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 29HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX113: BLL_EX113 Runoff = 0.02 cfs @ 12.32 hrs, Volume= 0.002 af, Depth= 0.64" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description 0.030 70 Woods, Good, HSG C 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.5 180 0.0830 0.15 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_EX113: BLL_EX113 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.018 0.017 0.016 0.015 0.014 0.013 0.012 0.011 0.01 0.009 0.008 0.007 0.006 0.005 0.004 0.003 0.002 0.001 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.030 ac Runoff Volume=0.002 af Runoff Depth=0.64" Flow Length=180' Slope=0.0830 '/' Tc=20.5 min CN=70 0.02 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 30HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX206: BLL_EX206 Runoff = 0.40 cfs @ 12.22 hrs, Volume= 0.028 af, Depth= 1.09" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.310 79 CN from Previous Model 0.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX206: BLL_EX206 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.310 ac Runoff Volume=0.028 af Runoff Depth=1.09" Tc=15.0 min CN=79 0.40 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 31HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX303: BLL_EX303 Runoff = 0.16 cfs @ 12.68 hrs, Volume= 0.021 af, Depth= 1.09" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.230 79 CN from Previous Model 0.230 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 41.4 300 0.0400 0.12 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" 4.8 500 0.1190 1.72 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 46.2 800 Total Subcatchment BLL_EX303: BLL_EX303 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.230 ac Runoff Volume=0.021 af Runoff Depth=1.09" Flow Length=800' Tc=46.2 min CN=79 0.16 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 32HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX304: BLL_EX304 Runoff = 4.26 cfs @ 12.14 hrs, Volume= 0.263 af, Depth= 1.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.080 98 Existing County Road * 0.400 98 Existing homes * 2.000 74 Existing lawn 0.370 70 Woods, Good, HSG C 2.850 Weighted Average 2.370 83.16% Pervious Area 0.480 16.84% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.5 300 0.1660 0.52 Sheet Flow, Range n= 0.130 P2= 2.87" Subcatchment BLL_EX304: BLL_EX304 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=2.850 ac Runoff Volume=0.263 af Runoff Depth=1.11" Flow Length=300' Slope=0.1660 '/' Tc=9.5 min CN=WQ 4.26 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 33HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX501: BLL_EX501 Runoff = 0.70 cfs @ 12.20 hrs, Volume= 0.053 af, Depth= 2.05" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.100 74 Existing lawn * 0.210 98 Existing road and sidewalk 0.310 Weighted Average 0.100 32.26% Pervious Area 0.210 67.74% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX501: BLL_EX501 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.310 ac Runoff Volume=0.053 af Runoff Depth=2.05" Tc=15.0 min CN=WQ 0.70 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 34HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX502: BLL_EX502 Runoff = 0.58 cfs @ 12.20 hrs, Volume= 0.044 af, Depth= 1.97" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.100 74 Existing lawn * 0.170 98 Existing road and sidewalk 0.270 Weighted Average 0.100 37.04% Pervious Area 0.170 62.96% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX502: BLL_EX502 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.270 ac Runoff Volume=0.044 af Runoff Depth=1.97" Tc=15.0 min CN=WQ 0.58 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 35HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX503: BLL_EX503 Runoff = 0.03 cfs @ 12.22 hrs, Volume= 0.002 af, Depth= 0.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.030 74 Existing lawn 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX503: BLL_EX503 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.030 ac Runoff Volume=0.002 af Runoff Depth=0.83" Tc=15.0 min CN=74 0.03 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 36HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX504: BLL_EX504 Runoff = 1.26 cfs @ 12.22 hrs, Volume= 0.095 af, Depth= 1.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.160 98 Existing homes * 0.870 74 Existing lawn 1.030 Weighted Average 0.870 84.47% Pervious Area 0.160 15.53% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX504: BLL_EX504 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=1.030 ac Runoff Volume=0.095 af Runoff Depth=1.11" Tc=15.0 min CN=WQ 1.26 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 37HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 10-1: LU 10-1 Runoff = 13.29 cfs @ 12.09 hrs, Volume= 0.641 af, Depth= 1.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 7.420 78 7.420 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 10-1: LU 10-1 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=7.420 ac Runoff Volume=0.641 af Runoff Depth=1.04" Tc=6.0 min CN=78 13.29 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 38HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-1: LU 2-1 Runoff = 41.77 cfs @ 12.77 hrs, Volume= 6.161 af, Depth= 0.93" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 79.621 76 79.621 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 52.0 Direct Entry, Subcatchment LU 2-1: LU 2-1 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=79.621 ac Runoff Volume=6.161 af Runoff Depth=0.93" Tc=52.0 min CN=76 41.77 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 39HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-10: LU 2-10 Runoff = 12.46 cfs @ 12.09 hrs, Volume= 0.641 af, Depth= 0.78" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 9.880 73 9.880 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 2-10: LU 2-10 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=9.880 ac Runoff Volume=0.641 af Runoff Depth=0.78" Tc=6.0 min CN=73 12.46 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 40HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-11: LU 2-11 Runoff = 24.15 cfs @ 12.17 hrs, Volume= 1.605 af, Depth= 0.88" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 21.970 75 21.970 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment LU 2-11: LU 2-11 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=21.970 ac Runoff Volume=1.605 af Runoff Depth=0.88" Tc=12.0 min CN=75 24.15 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 41HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-12: LU 2-12 Runoff = 11.30 cfs @ 12.09 hrs, Volume= 0.593 af, Depth= 0.73" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 9.720 72 9.720 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 2-12: LU 2-12 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=9.720 ac Runoff Volume=0.593 af Runoff Depth=0.73" Tc=6.0 min CN=72 11.30 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 42HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-13: LU 2-13 Runoff = 16.92 cfs @ 12.11 hrs, Volume= 0.939 af, Depth= 0.73" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 15.390 72 15.390 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-13: LU 2-13 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=15.390 ac Runoff Volume=0.939 af Runoff Depth=0.73" Tc=7.0 min CN=72 16.92 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 43HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-14: LU 2-14 Runoff = 20.63 cfs @ 12.19 hrs, Volume= 1.483 af, Depth= 0.69" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 25.920 71 25.920 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment LU 2-14: LU 2-14 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=25.920 ac Runoff Volume=1.483 af Runoff Depth=0.69" Tc=12.0 min CN=71 20.63 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 44HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-15: LU 2-15 Runoff = 5.70 cfs @ 12.07 hrs, Volume= 0.263 af, Depth= 0.73" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 4.310 72 4.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Subcatchment LU 2-15: LU 2-15 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=4.310 ac Runoff Volume=0.263 af Runoff Depth=0.73" Tc=4.0 min CN=72 5.70 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 45HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-16: LU 2-16 Runoff = 3.95 cfs @ 12.07 hrs, Volume= 0.176 af, Depth= 0.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 2.560 74 2.560 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Subcatchment LU 2-16: LU 2-16 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=2.560 ac Runoff Volume=0.176 af Runoff Depth=0.83" Tc=4.0 min CN=74 3.95 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 46HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-18: LU 2-18 Runoff = 12.99 cfs @ 12.10 hrs, Volume= 0.669 af, Depth= 0.98" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 8.180 77 8.180 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-18: LU 2-18 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=8.180 ac Runoff Volume=0.669 af Runoff Depth=0.98" Tc=7.0 min CN=77 12.99 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 47HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-2: LU 2-2 Runoff = 15.33 cfs @ 12.11 hrs, Volume= 0.821 af, Depth= 0.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 11.910 74 11.910 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-2: LU 2-2 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=11.910 ac Runoff Volume=0.821 af Runoff Depth=0.83" Tc=7.0 min CN=74 15.33 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 48HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-3: LU 2-3 Runoff = 37.83 cfs @ 12.26 hrs, Volume= 3.084 af, Depth= 0.78" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 47.530 73 47.530 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 17.0 Direct Entry, Subcatchment LU 2-3: LU 2-3 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=47.530 ac Runoff Volume=3.084 af Runoff Depth=0.78" Tc=17.0 min CN=73 37.83 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 49HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-4: LU 2-4 Runoff = 21.06 cfs @ 12.12 hrs, Volume= 1.122 af, Depth= 1.09" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 12.300 79 12.300 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment LU 2-4: LU 2-4 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=12.300 ac Runoff Volume=1.122 af Runoff Depth=1.09" Tc=8.0 min CN=79 21.06 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 50HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-5: LU 2-5 Runoff = 15.50 cfs @ 12.10 hrs, Volume= 0.791 af, Depth= 1.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 9.150 78 9.150 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-5: LU 2-5 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=9.150 ac Runoff Volume=0.791 af Runoff Depth=1.04" Tc=7.0 min CN=78 15.50 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 51HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-7: LU 2-7 Runoff = 14.14 cfs @ 12.10 hrs, Volume= 0.729 af, Depth= 0.98" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 8.904 77 8.904 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-7: LU 2-7 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=8.904 ac Runoff Volume=0.729 af Runoff Depth=0.98" Tc=7.0 min CN=77 14.14 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 52HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-8: LU 2-8 Runoff = 7.83 cfs @ 12.08 hrs, Volume= 0.378 af, Depth= 0.78" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 5.830 73 5.830 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment LU 2-8: LU 2-8 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=5.830 ac Runoff Volume=0.378 af Runoff Depth=0.78" Tc=5.0 min CN=73 7.83 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 53HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-9: LU 2-9 Runoff = 11.31 cfs @ 12.11 hrs, Volume= 0.642 af, Depth= 0.69" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 11.210 71 11.210 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-9: LU 2-9 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=11.210 ac Runoff Volume=0.642 af Runoff Depth=0.69" Tc=7.0 min CN=71 11.31 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 54HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W11S: W11 Runoff = 5.34 cfs @ 12.20 hrs, Volume= 0.394 af, Depth= 0.87" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 2.746 74 Wetland, HSG C * 0.481 70 Woods Good, HSG C * 1.503 71 Meadow, HSG C * 0.452 74 75% Grass cover Good, HSG C * 0.284 98 Impervious, HSG C 5.464 Weighted Average 5.181 94.81% Pervious Area 0.284 5.19% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.8 650 0.0380 0.79 Lag/CN Method, Subcatchment W11S: W11 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=5.464 ac Runoff Volume=0.394 af Runoff Depth=0.87" Flow Length=650' Slope=0.0380 '/' Tc=13.8 min CN=WQ 5.34 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 55HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W12S: W12 Runoff = 1.29 cfs @ 12.05 hrs, Volume= 0.053 af, Depth= 0.87" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.081 74 Wetland, HSG C * 0.290 70 Woods Good, HSG C * 0.316 74 75% Grass cover Good, HSG C * 0.047 98 Impervious, HSG C 0.734 Weighted Average 0.687 93.58% Pervious Area 0.047 6.42% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.1 130 0.1200 1.01 Lag/CN Method, Subcatchment W12S: W12 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.734 ac Runoff Volume=0.053 af Runoff Depth=0.87" Flow Length=130' Slope=0.1200 '/' Tc=2.1 min CN=WQ 1.29 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 56HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W13S: W13 Runoff = 2.16 cfs @ 12.14 hrs, Volume= 0.133 af, Depth= 0.92" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.038 74 Wetland, HSG C * 0.252 70 Woods Good, HSG C * 1.325 74 75% Grass cover Good, HSG C * 0.114 98 Impervious, HSG C 1.729 Weighted Average 1.615 93.39% Pervious Area 0.114 6.61% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 715 0.0900 1.27 Lag/CN Method, Subcatchment W13S: W13 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=1.729 ac Runoff Volume=0.133 af Runoff Depth=0.92" Flow Length=715' Slope=0.0900 '/' Tc=9.4 min CN=WQ 2.16 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 57HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W14S: W14 Runoff = 3.44 cfs @ 12.13 hrs, Volume= 0.210 af, Depth= 1.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.084 74 Wetland, HSG C * 0.638 70 Woods Good, HSG C * 0.014 71 Meadow, HSG C * 1.375 74 75% Grass cover Good, HSG C * 0.341 98 Impervious, HSG C 2.452 Weighted Average 2.112 86.11% Pervious Area 0.341 13.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.1 715 0.0900 1.30 Lag/CN Method, Subcatchment W14S: W14 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=2.452 ac Runoff Volume=0.210 af Runoff Depth=1.03" Flow Length=715' Slope=0.0900 '/' Tc=9.1 min CN=WQ 3.44 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 58HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W1nS: W1n Runoff = 14.69 cfs @ 12.23 hrs, Volume= 1.192 af, Depth= 0.67" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 18.460 70 Woods, Good, HSG C * 2.670 74 75% Grass cover Good, HSG C * 0.167 74 County Ditch, HSG C * 0.030 98 County Road Surface, HSG C 21.327 Weighted Average 21.297 99.86% Pervious Area 0.030 0.14% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.1 1,350 0.1200 1.49 Lag/CN Method, Subcatchment W1nS: W1n Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=21.327 ac Runoff Volume=1.192 af Runoff Depth=0.67" Flow Length=1,350' Slope=0.1200 '/' Tc=15.1 min CN=WQ 14.69 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 59HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W2S: W2 Runoff = 2.68 cfs @ 12.18 hrs, Volume= 0.195 af, Depth= 0.73" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.182 74 Wetland, HSG C * 2.735 70 Woods, Good, HSG C * 0.059 74 75% Grass cover Good, HSG C * 0.102 74 County Ditch, HSG C * 0.073 98 County Road Surface, HSG C * 0.038 98 Existing road and sidewalk 3.189 Weighted Average 3.078 96.52% Pervious Area 0.111 3.48% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.1 725 0.0690 0.99 Lag/CN Method, Subcatchment W2S: W2 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=3.189 ac Runoff Volume=0.195 af Runoff Depth=0.73" Flow Length=725' Slope=0.0690 '/' Tc=12.1 min CN=WQ 2.68 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 60HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W6S: W6 Runoff = 0.90 cfs @ 12.07 hrs, Volume= 0.041 af, Depth= 0.86" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 0.061 74 Wetland, HSG C * 0.392 71 Meadow, HSG C * 0.080 74 75% Grass cover Good, HSG C * 0.041 98 Impervious, HSG C 0.575 Weighted Average 0.534 92.88% Pervious Area 0.041 7.12% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.7 200 0.0800 0.90 Lag/CN Method, Subcatchment W6S: W6 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=0.575 ac Runoff Volume=0.041 af Runoff Depth=0.86" Flow Length=200' Slope=0.0800 '/' Tc=3.7 min CN=WQ 0.90 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 61HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment WLS: WL Runoff = 6.33 cfs @ 12.06 hrs, Volume= 0.287 af, Depth= 0.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Area (ac) CN Description * 5.078 70 Woods, Good, HSG C * 0.219 74 75% Grass cover Good, HSG C 5.297 Weighted Average 5.297 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.2 300 0.2500 1.54 Lag/CN Method, Subcatchment WLS: WL Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87" Runoff Area=5.297 ac Runoff Volume=0.287 af Runoff Depth=0.65" Flow Length=300' Slope=0.2500 '/' Tc=3.2 min CN=WQ 6.33 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 62HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Reach Pipe from W2 to W1: Pipe from Wetland 2 to Wetland 1 [52] Hint: Inlet/Outlet conditions not evaluated Inflow = 6.89 cfs @ 13.25 hrs, Volume= 3.419 af Outflow = 6.89 cfs @ 13.25 hrs, Volume= 3.419 af, Atten= 0%, Lag= 0.2 min Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Max. Velocity= 4.75 fps, Min. Travel Time= 0.2 min Avg. Velocity = 0.38 fps, Avg. Travel Time= 2.9 min Peak Storage= 95 cf @ 13.25 hrs Average Depth at Peak Storage= 0.88' Bank-Full Depth= 2.25' Flow Area= 4.0 sf, Capacity= 21.10 cfs 27.0" Round Pipe n= 0.025 Length= 65.8' Slope= 0.0172 '/' Inlet Invert= 965.96', Outlet Invert= 964.83' Reach Pipe from W2 to W1: Pipe from Wetland 2 to Wetland 1 Inflow Outflow Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Avg. Flow Depth=0.88' Max Vel=4.75 fps 27.0" Round Pipe n=0.025 L=65.8' S=0.0172 '/' Capacity=21.10 cfs 6.89 cfs 6.89 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 63HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 300P: Pond with IESF Inflow Area = 73.792 ac, 31.33% Impervious, Inflow Depth = 1.01" for 2y 24hr event Inflow = 66.21 cfs @ 12.27 hrs, Volume= 6.237 af Outflow = 2.70 cfs @ 15.31 hrs, Volume= 6.237 af, Atten= 96%, Lag= 182.3 min Primary = 2.70 cfs @ 15.31 hrs, Volume= 6.237 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 965.00' Surf.Area= 59,664 sf Storage= 254,284 cf Peak Elev= 967.18' @ 15.31 hrs Surf.Area= 92,467 sf Storage= 442,812 cf (188,528 cf above start) Plug-Flow detention time= 5,134.1 min calculated for 0.399 af (6% of inflow) Center-of-Mass det. time= 1,524.1 min ( 2,340.1 - 816.0 ) Volume Invert Avail.Storage Storage Description #1 955.00' 779,932 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 955.00 7,650 0 0 956.00 11,005 9,328 9,328 958.00 16,690 27,695 37,023 960.00 23,225 39,915 76,938 962.00 31,363 54,588 131,526 963.00 36,141 33,752 165,278 964.00 41,104 38,623 203,900 965.00 59,664 50,384 254,284 965.01 63,414 615 254,899 965.02 80,995 722 255,621 965.95 85,712 77,519 333,140 970.50 110,680 446,792 779,932 Device Routing Invert Outlet Devices #1 Primary 960.22'42.0" Round RCP_Round 42" L= 43.0' Ke= 0.500 Inlet / Outlet Invert= 960.22' / 960.00' S= 0.0051 '/' Cc= 0.900 n= 0.013, Flow Area= 9.62 sf #2 Device 1 965.95'Custom Weir, Cv= 2.62 (C= 3.28) Head (feet) 0.00 2.35 2.35 5.00 Width (feet) 0.50 0.50 7.00 7.00 #3 Device 2 960.00'42.0" Round RCP_Round 42" L= 10.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 960.00' / 960.00' S= 0.0000 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 9.62 sf #4 Device 1 963.00'6.0" Vert. 2 - 6" Draintile Outlet X 2.00 C= 0.600 #5 Device 4 965.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 965.00' - 965.01' Excluded Surface area = 59,664 sf #6 Secondary 960.22'36.0" Round RCP_Round 36" L= 43.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 960.22' / 960.00' S= 0.0051 '/' Cc= 0.900 Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 64HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf #7 Device 6 968.30'5.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Primary OutFlow Max=2.70 cfs @ 15.31 hrs HW=967.18' TW=957.54' (Dynamic Tailwater) 1=RCP_Round 42" (Passes 2.70 cfs of 105.75 cfs potential flow) 2=Custom Weir (Weir Controls 2.24 cfs @ 3.63 fps) 3=RCP_Round 42" (Passes 2.24 cfs of 70.09 cfs potential flow) 4=2 - 6" Draintile Outlet (Passes 0.46 cfs of 3.75 cfs potential flow) 5=Iron Enhanced Filtration (Exfiltration Controls 0.46 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=965.00' TW=957.00' (Dynamic Tailwater) 6=RCP_Round 36" (Passes 0.00 cfs of 59.59 cfs potential flow) 7=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) Pond 300P: Pond with IESF Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=73.792 ac Peak Elev=967.18' Storage=442,812 cf 66.21 cfs 2.70 cfs 2.70 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 65HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 400P: County pond with IESF Inflow Area = 4.800 ac, 45.05% Impervious, Inflow Depth = 1.61" for 2y 24hr event Inflow = 7.37 cfs @ 12.18 hrs, Volume= 0.643 af Outflow = 2.77 cfs @ 12.59 hrs, Volume= 0.643 af, Atten= 62%, Lag= 24.8 min Primary = 2.77 cfs @ 12.59 hrs, Volume= 0.643 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 984.00' Surf.Area= 10,824 sf Storage= 37,248 cf Peak Elev= 984.80' @ 12.59 hrs Surf.Area= 16,890 sf Storage= 50,099 cf (12,851 cf above start) Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= 603.2 min ( 1,394.5 - 791.3 ) Volume Invert Avail.Storage Storage Description #1 974.00' 185,067 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 974.00 485 0 0 975.00 868 677 677 976.00 1,334 1,101 1,778 978.00 2,522 3,856 5,634 980.00 4,030 6,552 12,186 982.00 5,839 9,869 22,055 983.00 6,862 6,351 28,405 984.00 10,824 8,843 37,248 984.01 11,174 110 37,358 984.02 15,262 132 37,490 984.45 16,243 6,774 44,264 985.00 17,254 9,212 53,475 986.00 20,050 18,652 72,127 987.00 22,870 21,460 93,587 991.00 22,870 91,480 185,067 Device Routing Invert Outlet Devices #1 Primary 982.00'15.0" Round RCP_Round 15" L= 29.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 982.00' / 982.00' S= 0.0000 '/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #2 Device 1 984.45'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 3.0' Crest Height #3 Device 2 982.00'15.0" Round RCP_Round 15" L= 22.0' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 981.75' / 982.00' S= -0.0114 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #4 Device 1 982.00'6.0" Vert. Draintile Outlet C= 0.600 #5 Device 4 984.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 984.00' - 984.01' Excluded Surface area = 10,824 sf Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 66HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Primary OutFlow Max=2.77 cfs @ 12.59 hrs HW=984.80' TW=978.69' (Dynamic Tailwater) 1=RCP_Round 15" (Passes 2.77 cfs of 8.96 cfs potential flow) 2=Sharp-Crested Rectangular Weir (Weir Controls 2.72 cfs @ 1.97 fps) 3=RCP_Round 15" (Passes 2.72 cfs of 3.51 cfs potential flow) 4=Draintile Outlet (Passes 0.04 cfs of 1.51 cfs potential flow) 5=Iron Enhanced Filtration (Exfiltration Controls 0.04 cfs) Pond 400P: County pond with IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=4.800 ac Peak Elev=984.80' Storage=50,099 cf 7.37 cfs 2.77 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 67HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 404P: P-LU 2-2 [86] Warning: Oscillations may require smaller dt (severity=29395) Inflow = 20.16 cfs @ 12.09 hrs, Volume= 1.915 af Outflow = 6.52 cfs @ 12.14 hrs, Volume= 1.915 af, Atten= 68%, Lag= 2.9 min Primary = 6.52 cfs @ 12.14 hrs, Volume= 1.915 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 969.90' Surf.Area= 0.094 ac Storage= 0.085 af Peak Elev= 971.18' @ 13.29 hrs Surf.Area= 0.997 ac Storage= 0.548 af (0.463 af above start) Plug-Flow detention time= 639.2 min calculated for 1.830 af (96% of inflow) Center-of-Mass det. time= 46.8 min ( 2,230.3 - 2,183.5 ) Volume Invert Avail.Storage Storage Description #1 968.00' 11.223 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.010 0.000 0.000 969.00 0.040 0.025 0.025 970.00 0.100 0.070 0.095 971.00 0.533 0.316 0.411 972.00 3.130 1.831 2.243 973.00 4.690 3.910 6.153 974.00 5.450 5.070 11.223 Device Routing Invert Outlet Devices #1 Primary 968.58'30.0" Round RCP_Round 30" L= 85.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 968.58' / 968.08' S= 0.0059 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 4.91 sf #2 Secondary 972.01'15.0" Round Culvert L= 114.0' Ke= 0.500 Inlet / Outlet Invert= 971.97' / 972.01' S= -0.0004 '/' Cc= 0.900 n= 0.011, Flow Area= 1.23 sf Primary OutFlow Max=6.38 cfs @ 12.14 hrs HW=970.64' TW=970.51' (Dynamic Tailwater) 1=RCP_Round 30" (Outlet Controls 6.38 cfs @ 2.00 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=969.90' TW=968.00' (Dynamic Tailwater) 2=Culvert ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 68HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 404P: P-LU 2-2 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Peak Elev=971.18' Storage=0.548 af 20.16 cfs 6.52 cfs 6.52 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 69HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 490: CB inlet [57] Hint: Peaked at 984.95' (Flood elevation advised) Inflow Area = 5.397 ac, 16.24% Impervious, Inflow Depth = 0.73" for 2y 24hr event Inflow = 2.92 cfs @ 12.31 hrs, Volume= 0.330 af Outflow = 2.92 cfs @ 12.31 hrs, Volume= 0.330 af, Atten= 0%, Lag= 0.1 min Primary = 2.92 cfs @ 12.31 hrs, Volume= 0.330 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 984.95' @ 12.31 hrs Device Routing Invert Outlet Devices #1 Primary 984.63'19.0" Horiz. Orifice/Grate C= 0.600 in 22.0" Grate (75% open area) Limited to weir flow at low heads #2 Secondary 985.10'8.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=2.92 cfs @ 12.31 hrs HW=984.95' TW=966.12' (Dynamic Tailwater) 1=Orifice/Grate (Weir Controls 2.92 cfs @ 1.85 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=984.63' TW=981.04' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 70HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 490: CB inlet Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=5.397 ac Peak Elev=984.95' 2.92 cfs 2.92 cfs 2.92 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 71HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 491P: CB inlet [57] Hint: Peaked at 981.04' (Flood elevation advised) Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 981.04' @ 0.00 hrs Device Routing Invert Outlet Devices #1 Primary 981.04'19.0" Horiz. Orifice/Grate C= 0.600 in 22.0" Grate (75% open area) Limited to weir flow at low heads Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=981.04' TW=965.00' (Dynamic Tailwater) 1=Orifice/Grate ( Controls 0.00 cfs) Pond 491P: CB inlet Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Peak Elev=981.04' 0.00 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 72HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 500P: IESF Inflow Area = 1.766 ac, 29.44% Impervious, Inflow Depth = 1.35" for 2y 24hr event Inflow = 3.32 cfs @ 12.13 hrs, Volume= 0.199 af Outflow = 2.17 cfs @ 12.22 hrs, Volume= 0.199 af, Atten= 35%, Lag= 5.7 min Primary = 2.17 cfs @ 12.22 hrs, Volume= 0.199 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 985.36' @ 12.22 hrs Surf.Area= 2,824 sf Storage= 2,960 cf Plug-Flow detention time= 544.7 min calculated for 0.199 af (100% of inflow) Center-of-Mass det. time= 544.7 min ( 1,343.9 - 799.2 ) Volume Invert Avail.Storage Storage Description #1 984.00' 6,740 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 984.00 0 0 0 984.01 200 1 1 984.02 1,600 9 10 985.00 2,468 1,993 2,003 985.50 2,960 1,357 3,360 986.00 3,520 1,620 4,980 986.50 3,520 1,760 6,740 Device Routing Invert Outlet Devices #1 Primary 982.00'6.0" Vert. Draintile Outlet C= 0.600 #2 Device 1 984.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 984.00' - 984.01' Excluded Surface area = 0 sf #3 Primary 985.30'60.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=2.17 cfs @ 12.22 hrs HW=985.36' TW=978.33' (Dynamic Tailwater) 1=Draintile Outlet (Passes 0.02 cfs of 1.67 cfs potential flow) 2=Iron Enhanced Filtration (Exfiltration Controls 0.02 cfs) 3=Broad-Crested Rectangular Weir (Weir Controls 2.15 cfs @ 0.58 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 73HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 500P: IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=1.766 ac Peak Elev=985.36' Storage=2,960 cf 3.32 cfs 2.17 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 74HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 600P: rain garden [86] Warning: Oscillations may require smaller dt (severity=1588) Inflow Area = 2.197 ac, 13.03% Impervious, Inflow Depth = 0.24" for 2y 24hr event Inflow = 0.69 cfs @ 12.15 hrs, Volume= 0.045 af Outflow = 0.03 cfs @ 15.04 hrs, Volume= 0.045 af, Atten= 95%, Lag= 173.6 min Discarded = 0.01 cfs @ 13.58 hrs, Volume= 0.040 af Primary = 0.02 cfs @ 15.04 hrs, Volume= 0.005 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 999.51' @ 15.04 hrs Surf.Area= 2,045 sf Storage= 1,239 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 1,218.1 min ( 2,039.2 - 821.1 ) Volume Invert Avail.Storage Storage Description #1 998.70' 6,330 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 998.70 1,000 0 0 999.50 2,045 1,218 1,218 1,000.00 2,045 1,023 2,240 1,002.00 2,045 4,090 6,330 Device Routing Invert Outlet Devices #1 Primary 999.50'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 998.70'0.200 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 13.58 hrs HW=999.50' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.02 cfs @ 15.04 hrs HW=999.51' TW=957.56' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.02 cfs @ 0.24 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 75HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 600P: rain garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=2.197 ac Peak Elev=999.51' Storage=1,239 cf 0.69 cfs 0.03 cfs 0.01 cfs 0.02 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 76HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 800P: rain garden Inflow Area = 1.094 ac, 15.23% Impervious, Inflow Depth = 1.04" for 2y 24hr event Inflow = 1.65 cfs @ 12.11 hrs, Volume= 0.095 af Outflow = 0.99 cfs @ 12.22 hrs, Volume= 0.095 af, Atten= 40%, Lag= 6.7 min Discarded = 0.01 cfs @ 12.22 hrs, Volume= 0.035 af Primary = 0.99 cfs @ 12.22 hrs, Volume= 0.060 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,001.62' @ 12.22 hrs Surf.Area= 1,745 sf Storage= 1,270 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 538.1 min ( 1,356.1 - 817.9 ) Volume Invert Avail.Storage Storage Description #1 1,000.70' 2,017 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,000.70 850 0 0 1,001.00 1,350 330 330 1,001.50 1,600 738 1,067 1,002.00 2,200 950 2,017 Device Routing Invert Outlet Devices #1 Primary 1,001.50'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 1,000.70'0.200 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.22 hrs HW=1,001.62' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.99 cfs @ 12.22 hrs HW=1,001.62' TW=999.33' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.99 cfs @ 0.81 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 77HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 800P: rain garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=1.094 ac Peak Elev=1,001.62' Storage=1,270 cf 1.65 cfs 0.99 cfs 0.01 cfs 0.99 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 78HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 900P: IESF Inflow Area = 1.215 ac, 34.66% Impervious, Inflow Depth = 1.45" for 2y 24hr event Inflow = 2.41 cfs @ 12.13 hrs, Volume= 0.147 af Outflow = 1.24 cfs @ 12.29 hrs, Volume= 0.147 af, Atten= 49%, Lag= 9.5 min Primary = 1.24 cfs @ 12.29 hrs, Volume= 0.147 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 992.14' @ 12.29 hrs Surf.Area= 2,750 sf Storage= 2,475 cf Plug-Flow detention time= 723.6 min calculated for 0.147 af (100% of inflow) Center-of-Mass det. time= 723.6 min ( 1,517.9 - 794.3 ) Volume Invert Avail.Storage Storage Description #1 991.00' 3,533 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.00 0 0 0 991.01 100 0 0 991.02 1,650 9 9 991.50 2,131 907 917 992.00 2,605 1,184 2,101 992.50 3,124 1,432 3,533 Device Routing Invert Outlet Devices #1 Primary 989.00'6.0" Vert. Draintile Outlet C= 0.600 #2 Device 1 991.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 991.00' - 991.01' Excluded Surface area = 0 sf #3 Primary 992.00'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=1.24 cfs @ 12.29 hrs HW=992.14' TW=987.28' (Dynamic Tailwater) 1=Draintile Outlet (Passes 0.01 cfs of 1.61 cfs potential flow) 2=Iron Enhanced Filtration (Exfiltration Controls 0.01 cfs) 3=Broad-Crested Rectangular Weir (Weir Controls 1.23 cfs @ 0.88 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 79HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 900P: IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Inflow Area=1.215 ac Peak Elev=992.14' Storage=2,475 cf 2.41 cfs 1.24 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 80HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond CB-9: EX CB-9 [57] Hint: Peaked at 988.63' (Flood elevation advised) Inflow Area = 11.464 ac, 0.00% Impervious, Inflow Depth = 0.95" for 2y 24hr event Inflow = 3.43 cfs @ 12.57 hrs, Volume= 0.903 af Outflow = 3.43 cfs @ 12.57 hrs, Volume= 0.903 af, Atten= 0%, Lag= 0.1 min Primary = 3.43 cfs @ 12.57 hrs, Volume= 0.903 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 988.63' @ 12.57 hrs Device Routing Invert Outlet Devices #1 Primary 987.85'24.0" Round CMP_Round 24" L= 94.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 987.85' / 980.75' S= 0.0755 '/' Cc= 0.900 n= 0.025 Corrugated metal, Flow Area= 3.14 sf Primary OutFlow Max=3.43 cfs @ 12.57 hrs HW=988.63' TW=978.68' (Dynamic Tailwater) 1=CMP_Round 24" (Inlet Controls 3.43 cfs @ 3.01 fps) Pond CB-9: EX CB-9 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=11.464 ac Peak Elev=988.63' 24.0" Round Culvert n=0.025 L=94.0' S=0.0755 '/' 3.43 cfs 3.43 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 81HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond LUCY: LAKE LUCY [40] Hint: Not Described (Outflow=Inflow) Inflow = 27.54 cfs @ 13.79 hrs, Volume= 56.037 af Primary = 27.54 cfs @ 13.79 hrs, Volume= 56.037 af, Atten= 0%, Lag= 0.1 min Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Pond LUCY: LAKE LUCY Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 27.54 cfs 27.54 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 82HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-1: P-LU 2-1 [86] Warning: Oscillations may require smaller dt (severity=58627) Inflow = 59.64 cfs @ 12.65 hrs, Volume= 19.014 af Outflow = 27.12 cfs @ 13.78 hrs, Volume= 55.758 af, Atten= 55%, Lag= 67.4 min Primary = 27.12 cfs @ 13.78 hrs, Volume= 55.758 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 957.63' @ 13.78 hrs Surf.Area= 355,117 sf Storage= 178,625 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 4,653.4 min ( 6,026.2 - 1,372.9 ) Volume Invert Avail.Storage Storage Description #1 957.00' 6,136,244 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 957.00 8,105 0 0 958.00 557,600 282,853 282,853 960.00 1,540,893 2,098,493 2,381,346 962.00 2,214,005 3,754,898 6,136,244 Device Routing Invert Outlet Devices #1 Primary 957.00'20.0' long Broad-Crested Rectangular Weir X 0.00 Head (feet) 0.50 1.00 1.50 Coef. (English) 3.00 3.00 3.00 #2 Primary 956.50'Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 0.00 0.50 1.00 1.50 2.00 2.50 Width (feet) 2.00 6.00 16.00 25.00 37.00 45.00 Primary OutFlow Max=27.12 cfs @ 13.78 hrs HW=957.63' TW=0.00' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) 2=Custom Weir/Orifice (Weir Controls 27.12 cfs @ 2.78 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 83HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-1: P-LU 2-1 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)65 60 55 50 45 40 35 30 25 20 15 10 5 0 Peak Elev=957.63' Storage=178,625 cf 59.64 cfs 27.12 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 84HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-10: P-LU 2-10 Inflow Area = 9.880 ac, 0.00% Impervious, Inflow Depth = 0.78" for 2y 24hr event Inflow = 12.46 cfs @ 12.09 hrs, Volume= 0.641 af Outflow = 2.87 cfs @ 12.54 hrs, Volume= 0.476 af, Atten= 77%, Lag= 26.9 min Primary = 2.87 cfs @ 12.54 hrs, Volume= 0.476 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 972.89' @ 12.54 hrs Surf.Area= 0.101 ac Storage= 0.234 af Plug-Flow detention time= 178.0 min calculated for 0.476 af (74% of inflow) Center-of-Mass det. time= 84.0 min ( 936.1 - 852.1 ) Volume Invert Avail.Storage Storage Description #1 968.00' 1.289 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.009 0.000 0.000 972.00 0.070 0.158 0.158 974.00 0.140 0.210 0.368 976.00 0.220 0.360 0.728 978.00 0.341 0.561 1.289 Device Routing Invert Outlet Devices #1 Primary 972.10'18.0" Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=2.87 cfs @ 12.54 hrs HW=972.89' TW=971.05' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 2.87 cfs @ 3.03 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 85HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-10: P-LU 2-10 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=9.880 ac Peak Elev=972.89' Storage=0.234 af 12.46 cfs 2.87 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 86HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-11: P-LU 2-11 Inflow = 44.78 cfs @ 12.17 hrs, Volume= 3.516 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 971.15' @ 250.00 hrs Surf.Area= 2.731 ac Storage= 3.514 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 968.00' 93.400 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.360 0.000 0.000 970.00 1.000 1.360 1.360 972.00 4.000 5.000 6.360 976.00 12.000 32.000 38.360 980.00 15.520 55.040 93.400 Device Routing Invert Outlet Devices #1 Primary 972.01'15.0" Round Culvert L= 114.0' Ke= 0.500 Inlet / Outlet Invert= 972.01' / 971.97' S= 0.0004 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 1.23 sf Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=968.00' TW=969.90' (Dynamic Tailwater) 1=Culvert ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 87HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-11: P-LU 2-11 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)50 48 46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Peak Elev=971.15' Storage=3.514 af 15.0" Round Culvert n=0.011 L=114.0' S=0.0004 '/' 44.78 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 88HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-12: P-LU 2-12 Inflow Area = 9.720 ac, 0.00% Impervious, Inflow Depth = 0.73" for 2y 24hr event Inflow = 11.30 cfs @ 12.09 hrs, Volume= 0.593 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 976.16' @ 24.34 hrs Surf.Area= 0.205 ac Storage= 0.593 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 972.00' 2.680 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 972.00 0.080 0.000 0.000 978.00 0.260 1.020 1.020 980.00 0.430 0.690 1.710 982.00 0.540 0.970 2.680 Device Routing Invert Outlet Devices #1 Primary 978.00'18.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 980.00'100.0' long x 26.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=972.00' TW=968.00' (Dynamic Tailwater) 1=Orifice/Grate ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=972.00' TW=968.00' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 89HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-12: P-LU 2-12 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=9.720 ac Peak Elev=976.16' Storage=0.593 af 11.30 cfs 0.00 cfs 0.00 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 90HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-13: P-LU 2-13 Inflow Area = 15.390 ac, 0.00% Impervious, Inflow Depth = 0.73" for 2y 24hr event Inflow = 16.92 cfs @ 12.11 hrs, Volume= 0.939 af Outflow = 0.82 cfs @ 15.06 hrs, Volume= 0.427 af, Atten= 95%, Lag= 176.9 min Primary = 0.82 cfs @ 15.06 hrs, Volume= 0.427 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 989.97' @ 15.06 hrs Surf.Area= 0.254 ac Storage= 0.600 af Plug-Flow detention time= 413.7 min calculated for 0.427 af (45% of inflow) Center-of-Mass det. time= 289.4 min ( 1,145.6 - 856.2 ) Volume Invert Avail.Storage Storage Description #1 986.00' 2.750 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 986.00 0.054 0.000 0.000 989.60 0.230 0.511 0.511 993.00 0.450 1.156 1.667 994.00 0.540 0.495 2.162 995.00 0.635 0.587 2.750 Device Routing Invert Outlet Devices #1 Primary 989.60'24.0" Round Culvert L= 110.0' Ke= 0.500 Inlet / Outlet Invert= 989.60' / 983.00' S= 0.0600 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 3.14 sf Primary OutFlow Max=0.82 cfs @ 15.06 hrs HW=989.97' TW=970.69' (Dynamic Tailwater) 1=Culvert (Inlet Controls 0.82 cfs @ 2.07 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 91HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-13: P-LU 2-13 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=15.390 ac Peak Elev=989.97' Storage=0.600 af 24.0" Round Culvert n=0.011 L=110.0' S=0.0600 '/' 16.92 cfs 0.82 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 92HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Inflow Area = 53.360 ac, 0.00% Impervious, Inflow Depth = 0.70" for 2y 24hr event Inflow = 37.83 cfs @ 12.26 hrs, Volume= 3.102 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 992.27' @ 250.00 hrs Surf.Area= 6.859 ac Storage= 3.102 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 991.90' 52.450 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 991.90 5.100 0.000 0.000 992.00 5.900 0.550 0.550 994.00 13.000 18.900 19.450 996.00 20.000 33.000 52.450 Device Routing Invert Outlet Devices #1 Primary 995.00'30.0' long Broad-Crested Rectangular Weir Head (feet) 0.50 1.00 Coef. (English) 2.80 2.80 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=991.90' TW=957.00' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 93HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=53.360 ac Peak Elev=992.27' Storage=3.102 af 37.83 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 94HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-4: P-LU 2-4 Inflow Area = 13.940 ac, 3.87% Impervious, Inflow Depth = 1.13" for 2y 24hr event Inflow = 22.96 cfs @ 12.12 hrs, Volume= 1.316 af Outflow = 9.93 cfs @ 12.34 hrs, Volume= 0.996 af, Atten= 57%, Lag= 13.3 min Primary = 5.98 cfs @ 12.34 hrs, Volume= 0.938 af Secondary = 3.95 cfs @ 12.34 hrs, Volume= 0.058 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 975.13' @ 12.34 hrs Surf.Area= 0.174 ac Storage= 0.498 af Plug-Flow detention time= 173.7 min calculated for 0.996 af (76% of inflow) Center-of-Mass det. time= 88.0 min ( 919.0 - 831.0 ) Volume Invert Avail.Storage Storage Description #1 970.00' 1.120 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 970.00 0.020 0.000 0.000 974.00 0.140 0.320 0.320 978.00 0.260 0.800 1.120 Device Routing Invert Outlet Devices #1 Primary 974.00'21.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 975.00'30.0' long x 15.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=5.98 cfs @ 12.34 hrs HW=975.13' TW=970.86' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 5.98 cfs @ 3.63 fps) Secondary OutFlow Max=3.95 cfs @ 12.34 hrs HW=975.13' TW=970.86' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir (Weir Controls 3.95 cfs @ 0.98 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 95HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-4: P-LU 2-4 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=13.940 ac Peak Elev=975.13' Storage=0.498 af 22.96 cfs 9.93 cfs 5.98 cfs 3.95 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 96HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-5: P-LU 2-5 Inflow Area = 9.150 ac, 0.00% Impervious, Inflow Depth = 1.04" for 2y 24hr event Inflow = 15.50 cfs @ 12.10 hrs, Volume= 0.791 af Outflow = 1.97 cfs @ 12.66 hrs, Volume= 0.810 af, Atten= 87%, Lag= 33.6 min Primary = 1.97 cfs @ 12.66 hrs, Volume= 0.810 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 965.00' Surf.Area= 0.200 ac Storage= 0.447 af Peak Elev= 965.52' @ 12.66 hrs Surf.Area= 0.351 ac Storage= 0.778 af (0.331 af above start) Plug-Flow detention time= 478.1 min calculated for 0.363 af (46% of inflow) Center-of-Mass det. time= 137.8 min ( 975.8 - 838.0 ) Volume Invert Avail.Storage Storage Description #1 956.00' 2.352 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 956.00 0.004 0.000 0.000 962.00 0.030 0.102 0.102 965.00 0.200 0.345 0.447 968.00 1.070 1.905 2.352 Device Routing Invert Outlet Devices #1 Primary 962.98'18.0" Round Culvert L= 30.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 962.98' / 962.83' S= 0.0050 '/' Cc= 0.900 n= 0.013, Flow Area= 1.77 sf #2 Device 1 964.83'15.0" Round Culvert L= 15.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 963.38' / 964.83' S= -0.0967 '/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #3 Device 1 966.00'18.0" W x 12.0" H Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.97 cfs @ 12.66 hrs HW=965.52' TW=957.33' (Dynamic Tailwater) 1=Culvert (Passes 1.97 cfs of 10.82 cfs potential flow) 2=Culvert (Inlet Controls 1.97 cfs @ 2.83 fps) 3=Orifice/Grate ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 97HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-5: P-LU 2-5 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=9.150 ac Peak Elev=965.52' Storage=0.778 af 15.50 cfs 1.97 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 98HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-6: Wetland 11 Inflow Area = 23.494 ac, 12.62% Impervious, Inflow Depth = 1.09" for 2y 24hr event Inflow = 11.07 cfs @ 12.23 hrs, Volume= 2.140 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 979.84' @ 250.00 hrs Surf.Area= 84,710 sf Storage= 93,177 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 978.00' 1,458,300 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 978.00 16,553 0 0 980.00 90,625 107,178 107,178 982.00 148,800 239,425 346,603 984.00 171,115 319,915 666,518 986.00 197,334 368,449 1,034,967 988.00 225,999 423,333 1,458,300 Device Routing Invert Outlet Devices #1 Primary 982.57'15.0" Round RCP_Round 15" L= 50.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 982.57' / 982.05' S= 0.0104 '/' Cc= 0.900 n= 0.013 Concrete sewer w/manholes & inlets, Flow Area= 1.23 sf Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=978.00' TW=965.00' (Dynamic Tailwater) 1=RCP_Round 15" ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 99HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-6: Wetland 11 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=23.494 ac Peak Elev=979.84' Storage=93,177 cf 15.0" Round Culvert n=0.013 L=50.0' S=0.0104 '/' 11.07 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 100HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-7: P-LU 2-7 Inflow Area = 8.904 ac, 0.00% Impervious, Inflow Depth = 0.98" for 2y 24hr event Inflow = 14.14 cfs @ 12.10 hrs, Volume= 0.729 af Outflow = 3.14 cfs @ 12.54 hrs, Volume= 0.728 af, Atten= 78%, Lag= 26.4 min Primary = 3.14 cfs @ 12.54 hrs, Volume= 0.728 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 995.27' Surf.Area= 7,683 sf Storage= 18,263 cf Peak Elev= 996.46' @ 12.54 hrs Surf.Area= 9,842 sf Storage= 29,328 cf (11,066 cf above start) Plug-Flow detention time= 443.4 min calculated for 0.309 af (42% of inflow) Center-of-Mass det. time= 104.1 min ( 945.0 - 840.9 ) Volume Invert Avail.Storage Storage Description #1 991.00' 117,493 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.00 871 0 0 995.27 7,683 18,263 18,263 996.00 8,932 6,064 24,327 998.00 12,906 21,838 46,165 1,000.00 18,379 31,285 77,450 1,002.00 21,664 40,043 117,493 Device Routing Invert Outlet Devices #1 Primary 995.27'12.0" Round RCP_Round 12" L= 60.8' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 995.27' / 994.07' S= 0.0197 '/' Cc= 0.900 n= 0.013, Flow Area= 0.79 sf Primary OutFlow Max=3.14 cfs @ 12.54 hrs HW=996.46' TW=988.63' (Dynamic Tailwater) 1=RCP_Round 12" (Inlet Controls 3.14 cfs @ 3.99 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 101HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-7: P-LU 2-7 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=8.904 ac Peak Elev=996.46' Storage=29,328 cf 12.0" Round Culvert n=0.013 L=60.8' S=0.0197 '/' 14.14 cfs 3.14 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 102HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-8: P-LU 2-8 Inflow Area = 5.830 ac, 0.00% Impervious, Inflow Depth = 0.78" for 2y 24hr event Inflow = 7.83 cfs @ 12.08 hrs, Volume= 0.378 af Outflow = 0.05 cfs @ 24.07 hrs, Volume= 0.018 af, Atten= 99%, Lag= 719.4 min Primary = 0.05 cfs @ 24.07 hrs, Volume= 0.018 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 996.10' @ 24.07 hrs Surf.Area= 0.144 ac Storage= 0.375 af Plug-Flow detention time= 1,289.0 min calculated for 0.018 af (5% of inflow) Center-of-Mass det. time= 1,151.2 min ( 2,002.3 - 851.1 ) Volume Invert Avail.Storage Storage Description #1 992.00' 0.720 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 992.00 0.040 0.000 0.000 996.00 0.140 0.360 0.360 998.00 0.220 0.360 0.720 Device Routing Invert Outlet Devices #1 Primary 996.00'12.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 997.00'50.0' long x 20.0' breadth Broad-Crested Rectangular Weir X 2.00 Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.05 cfs @ 24.07 hrs HW=996.10' TW=992.27' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 0.05 cfs @ 1.09 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=992.00' TW=991.90' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 103HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-8: P-LU 2-8 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=5.830 ac Peak Elev=996.10' Storage=0.375 af 7.83 cfs 0.05 cfs 0.05 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 104HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-9: P-LU 2-9 Inflow Area = 11.210 ac, 0.00% Impervious, Inflow Depth = 0.69" for 2y 24hr event Inflow = 11.31 cfs @ 12.11 hrs, Volume= 0.642 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 975.72' @ 24.39 hrs Surf.Area= 0.707 ac Storage= 0.642 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 975.00' 3.430 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 975.00 0.230 0.000 0.000 977.00 1.560 1.790 1.790 978.00 1.720 1.640 3.430 Device Routing Invert Outlet Devices #1 Primary 977.00'8.0" Vert. Orifice/Grate C= 0.580 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=975.00' TW=969.90' (Dynamic Tailwater) 1=Orifice/Grate ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 105HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-9: P-LU 2-9 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=11.210 ac Peak Elev=975.72' Storage=0.642 af 11.31 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 106HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU-2-16: P-LU-2-16 Inflow Area = 2.560 ac, 0.00% Impervious, Inflow Depth = 0.83" for 2y 24hr event Inflow = 3.95 cfs @ 12.07 hrs, Volume= 0.176 af Outflow = 0.33 cfs @ 13.07 hrs, Volume= 0.175 af, Atten= 92%, Lag= 59.7 min Primary = 0.33 cfs @ 13.07 hrs, Volume= 0.175 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 994.07' Surf.Area= 9,913 sf Storage= 902 cf Peak Elev= 994.35' @ 13.07 hrs Surf.Area= 10,815 sf Storage= 4,539 cf (3,637 cf above start) Plug-Flow detention time= 542.1 min calculated for 0.155 af (88% of inflow) Center-of-Mass det. time= 415.7 min ( 1,262.8 - 847.1 ) Volume Invert Avail.Storage Storage Description #1 994.00' 107,634 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 994.00 9,689 0 0 996.00 16,084 25,773 25,773 998.00 20,360 36,444 62,217 1,000.00 25,057 45,417 107,634 Device Routing Invert Outlet Devices #1 Primary 994.07'12.0" Round RCP_Round 12" L= 93.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 994.07' / 987.85' S= 0.0669 '/' Cc= 0.900 n= 0.013, Flow Area= 0.79 sf Primary OutFlow Max=0.33 cfs @ 13.07 hrs HW=994.35' TW=988.58' (Dynamic Tailwater) 1=RCP_Round 12" (Inlet Controls 0.33 cfs @ 1.81 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 107HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU-2-16: P-LU-2-16 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 Inflow Area=2.560 ac Peak Elev=994.35' Storage=4,539 cf 12.0" Round Culvert n=0.013 L=93.0' S=0.0669 '/' 3.95 cfs 0.33 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 108HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU10-1: P-LU 10-1 Inflow Area = 7.937 ac, 0.00% Impervious, Inflow Depth = 1.02" for 2y 24hr event Inflow = 13.88 cfs @ 12.09 hrs, Volume= 0.673 af Outflow = 0.51 cfs @ 15.05 hrs, Volume= 0.279 af, Atten= 96%, Lag= 177.9 min Primary = 0.51 cfs @ 15.05 hrs, Volume= 0.279 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 963.46' @ 15.05 hrs Surf.Area= 0.188 ac Storage= 0.460 af Plug-Flow detention time= 438.5 min calculated for 0.279 af (41% of inflow) Center-of-Mass det. time= 324.6 min ( 1,162.5 - 837.9 ) Volume Invert Avail.Storage Storage Description #1 958.00' 1.715 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 958.00 0.020 0.000 0.000 962.00 0.100 0.240 0.240 963.10 0.180 0.154 0.394 964.00 0.200 0.171 0.565 966.00 0.300 0.500 1.065 968.00 0.350 0.650 1.715 Device Routing Invert Outlet Devices #1 Primary 963.10'12.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 966.00'100.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=0.51 cfs @ 15.05 hrs HW=963.46' TW=0.00' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 0.51 cfs @ 2.04 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=958.00' TW=0.00' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 109HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU10-1: P-LU 10-1 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=7.937 ac Peak Elev=963.46' Storage=0.460 af 13.88 cfs 0.51 cfs 0.51 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 110HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W12: Wetland 12 Inflow Area = 0.734 ac, 6.42% Impervious, Inflow Depth = 0.87" for 2y 24hr event Inflow = 1.29 cfs @ 12.05 hrs, Volume= 0.053 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 993.73' @ 24.12 hrs Surf.Area= 0.086 ac Storage= 0.053 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 992.50' 0.430 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 992.50 0.002 0.000 0.000 993.00 0.035 0.009 0.009 993.50 0.070 0.026 0.035 994.00 0.104 0.043 0.079 994.50 0.134 0.059 0.138 995.00 0.171 0.076 0.215 995.50 0.210 0.095 0.310 996.00 0.269 0.120 0.430 Device Routing Invert Outlet Devices #1 Primary 994.00'15.0" Round RCP_Round 15" L= 45.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 994.00' / 993.82' S= 0.0040 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=992.50' TW=965.00' (Dynamic Tailwater) 1=RCP_Round 15" ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 111HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W12: Wetland 12 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=0.734 ac Peak Elev=993.73' Storage=0.053 af 15.0" Round Culvert n=0.013 L=45.0' S=0.0040 '/' 1.29 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 112HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W13: Wetland 13 Inflow Area = 1.729 ac, 6.61% Impervious, Inflow Depth = 0.92" for 2y 24hr event Inflow = 2.16 cfs @ 12.14 hrs, Volume= 0.133 af Outflow = 0.03 cfs @ 24.07 hrs, Volume= 0.006 af, Atten= 99%, Lag= 716.1 min Primary = 0.03 cfs @ 24.07 hrs, Volume= 0.006 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 993.01' @ 24.07 hrs Surf.Area= 10,215 sf Storage= 5,634 cf Plug-Flow detention time= 896.8 min calculated for 0.006 af (4% of inflow) Center-of-Mass det. time= 643.7 min ( 1,479.7 - 836.0 ) Volume Invert Avail.Storage Storage Description #1 991.50' 22,402 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.50 17 0 0 992.00 648 166 166 993.00 10,069 5,359 5,525 994.00 23,685 16,877 22,402 Device Routing Invert Outlet Devices #1 Primary 993.00'10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=0.03 cfs @ 24.07 hrs HW=993.01' TW=987.03' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.03 cfs @ 0.26 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 113HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W13: Wetland 13 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Inflow Area=1.729 ac Peak Elev=993.01' Storage=5,634 cf 2.16 cfs 0.03 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 114HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W14: Wetland 14 Inflow Area = 5.397 ac, 16.24% Impervious, Inflow Depth = 0.81" for 2y 24hr event Inflow = 3.46 cfs @ 12.13 hrs, Volume= 0.364 af Outflow = 2.92 cfs @ 12.31 hrs, Volume= 0.330 af, Atten= 15%, Lag= 10.7 min Primary = 2.92 cfs @ 12.31 hrs, Volume= 0.330 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 987.28' @ 12.31 hrs Surf.Area= 6,084 sf Storage= 2,836 cf Plug-Flow detention time= 296.3 min calculated for 0.330 af (91% of inflow) Center-of-Mass det. time= 69.4 min ( 1,183.5 - 1,114.0 ) Volume Invert Avail.Storage Storage Description #1 986.00' 27,529 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 986.00 261 0 0 986.50 1,045 327 327 987.00 3,560 1,151 1,478 987.50 8,040 2,900 4,378 988.00 9,380 4,355 8,733 988.50 11,195 5,144 13,877 989.00 13,765 6,240 20,117 989.50 15,884 7,412 27,529 Device Routing Invert Outlet Devices #1 Primary 987.00'8.0' long x 4.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Primary OutFlow Max=2.92 cfs @ 12.31 hrs HW=987.28' TW=984.95' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 2.92 cfs @ 1.30 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 115HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W14: Wetland 14 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=5.397 ac Peak Elev=987.28' Storage=2,836 cf 3.46 cfs 2.92 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 116HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W2: Wetland 2 [86] Warning: Oscillations may require smaller dt (severity=3456) Inflow = 21.17 cfs @ 12.12 hrs, Volume= 3.775 af Outflow = 6.89 cfs @ 13.25 hrs, Volume= 3.775 af, Atten= 67%, Lag= 67.9 min Primary = 6.89 cfs @ 13.25 hrs, Volume= 3.419 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Tertiary = 0.10 cfs @ 11.67 hrs, Volume= 0.356 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 969.90' Surf.Area= 2,833 sf Storage= 1,494 cf Peak Elev= 971.16' @ 13.25 hrs Surf.Area= 42,253 sf Storage= 28,169 cf (26,675 cf above start) Plug-Flow detention time= 157.0 min calculated for 3.741 af (99% of inflow) Center-of-Mass det. time= 30.4 min ( 1,597.3 - 1,566.9 ) Volume Invert Avail.Storage Storage Description #1 968.85' 1,052,827 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 968.85 12 0 0 970.00 3,102 1,791 1,791 972.00 70,418 73,520 75,311 974.00 154,658 225,076 300,387 976.00 189,337 343,995 644,382 978.00 219,108 408,445 1,052,827 Device Routing Invert Outlet Devices #1 Primary 967.70'18.0" Round CMP_Round 18" L= 210.0' CMP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 967.70' / 965.96' S= 0.0083 '/' Cc= 0.900 n= 0.025 Corrugated metal, Flow Area= 1.77 sf #2 Device 1 969.90'20.0' long x 5.0' breadth Ditch Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #3 Secondary 979.30'30.0' long x 15.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 #4 Tertiary 968.58'30.0" Round Culvert L= 85.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 968.08' / 968.58' S= -0.0059 '/' Cc= 0.900 n= 0.120, Flow Area= 4.91 sf Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 117HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Primary OutFlow Max=6.89 cfs @ 13.25 hrs HW=971.16' TW=966.84' (Dynamic Tailwater) 1=CMP_Round 18" (Barrel Controls 6.89 cfs @ 3.90 fps) 2=Ditch Berm (Passes 6.89 cfs of 75.44 cfs potential flow) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=969.90' TW=957.00' (Dynamic Tailwater) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Tertiary OutFlow Max=0.07 cfs @ 11.67 hrs HW=969.95' TW=969.95' (Dynamic Tailwater) 4=Culvert (Outlet Controls 0.07 cfs @ 0.03 fps) Pond W2: Wetland 2 Inflow Outflow Primary Secondary Tertiary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)22 20 18 16 14 12 10 8 6 4 2 0 Peak Elev=971.16' Storage=28,169 cf 21.17 cfs 6.89 cfs 6.89 cfs 0.00 cfs 0.10 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 118HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W6: Wetland 6 Inflow Area = 1.668 ac, 12.44% Impervious, Inflow Depth = 0.73" for 2y 24hr event Inflow = 1.31 cfs @ 12.22 hrs, Volume= 0.101 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,000.16' @ 24.39 hrs Surf.Area= 6,011 sf Storage= 4,402 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 999.00' 16,680 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 999.00 2,453 0 0 999.50 3,157 1,403 1,403 1,000.00 5,185 2,086 3,488 1,000.50 7,715 3,225 6,713 1,001.00 10,073 4,447 11,160 1,001.50 12,007 5,520 16,680 Device Routing Invert Outlet Devices #1 Primary 1,001.00'50.0' long x 25.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=999.00' TW=998.70' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr2y_S1 2y 24hr Rainfall=2.87"BluffsLL_ExistingConditions_0 Printed 9/23/2020Prepared by AE2S Page 119HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W6: Wetland 6 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=1.668 ac Peak Elev=1,000.16' Storage=4,402 cf 1.31 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 120HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Time span=0.00-250.00 hrs, dt=0.002 hrs, 125001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Sim-Route method - Pond routing by Sim-Route method Runoff Area=38.561 ac 45.60% Impervious Runoff Depth=2.81"Subcatchment 300S: 300 Flow Length=1,575' Slope=0.0350 '/' Tc=20.7 min CN=WQ Runoff=105.59 cfs 9.024 af Runoff Area=5.606 ac 29.33% Impervious Runoff Depth=2.39"Subcatchment 301S: 301 Flow Length=275' Slope=0.1030 '/' Tc=3.5 min CN=WQ Runoff=25.95 cfs 1.115 af Runoff Area=2.200 ac 77.27% Impervious Runoff Depth=3.53"Subcatchment 400S: Proposed CR 117 Tc=20.0 min CN=WQ Runoff=7.57 cfs 0.646 af Runoff Area=2.600 ac 17.79% Impervious Runoff Depth=2.09"Subcatchment 401S: 401 Flow Length=500' Slope=0.0500 '/' Tc=8.9 min CN=WQ Runoff=8.11 cfs 0.454 af Runoff Area=1.766 ac 29.44% Impervious Runoff Depth=2.44"Subcatchment 500S: 500 Flow Length=510' Slope=0.0400 '/' Tc=9.0 min CN=WQ Runoff=6.34 cfs 0.360 af Runoff Area=0.529 ac 14.88% Impervious Runoff Depth=2.00"Subcatchment 600S: 600 Flow Length=495' Slope=0.0400 '/' Tc=10.2 min CN=WQ Runoff=1.49 cfs 0.088 af Runoff Area=8.313 ac 0.56% Impervious Runoff Depth=1.60"Subcatchment 700S: 700 Flow Length=500' Slope=0.0900 '/' Tc=7.9 min CN=WQ Runoff=21.31 cfs 1.109 af Runoff Area=0.636 ac 16.77% Impervious Runoff Depth=2.04"Subcatchment 701S: 701 Flow Length=255' Slope=0.0400 '/' Tc=6.0 min CN=WQ Runoff=2.24 cfs 0.108 af Runoff Area=1.094 ac 15.23% Impervious Runoff Depth=2.04"Subcatchment 800S: 800 Flow Length=355' Slope=0.0400 '/' Tc=7.8 min CN=WQ Runoff=3.53 cfs 0.186 af Runoff Area=1.215 ac 34.66% Impervious Runoff Depth=2.57"Subcatchment 900S: 900 Flow Length=470' Slope=0.0300 '/' Tc=9.4 min CN=WQ Runoff=4.48 cfs 0.261 af Runoff Area=0.517 ac 0.00% Impervious Runoff Depth=1.65"Subcatchment AS: A Flow Length=250' Slope=0.0480 '/' Tc=6.0 min CN=WQ Runoff=1.52 cfs 0.071 af Runoff Area=0.520 ac 0.00% Impervious Runoff Depth=2.18"Subcatchment BLL_EX112: BLL_EX112 Tc=15.0 min CN=79 Runoff=1.40 cfs 0.095 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=1.51"Subcatchment BLL_EX113: BLL_EX113 Flow Length=180' Slope=0.0830 '/' Tc=20.5 min CN=70 Runoff=0.05 cfs 0.004 af Runoff Area=0.310 ac 0.00% Impervious Runoff Depth=2.18"Subcatchment BLL_EX206: BLL_EX206 Tc=15.0 min CN=79 Runoff=0.84 cfs 0.056 af Runoff Area=0.230 ac 0.00% Impervious Runoff Depth=2.18"Subcatchment BLL_EX303: BLL_EX303 Flow Length=800' Tc=46.2 min CN=79 Runoff=0.34 cfs 0.042 af Runoff Area=2.850 ac 16.84% Impervious Runoff Depth=2.14"Subcatchment BLL_EX304: BLL_EX304 Flow Length=300' Slope=0.1660 '/' Tc=9.5 min CN=WQ Runoff=8.86 cfs 0.508 af Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 121HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=0.310 ac 67.74% Impervious Runoff Depth=3.31"Subcatchment BLL_EX501: BLL_EX501 Tc=15.0 min CN=WQ Runoff=1.16 cfs 0.086 af Runoff Area=0.270 ac 62.96% Impervious Runoff Depth=3.21"Subcatchment BLL_EX502: BLL_EX502 Tc=15.0 min CN=WQ Runoff=0.98 cfs 0.072 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=1.80"Subcatchment BLL_EX503: BLL_EX503 Tc=15.0 min CN=74 Runoff=0.07 cfs 0.004 af Runoff Area=1.030 ac 15.53% Impervious Runoff Depth=2.14"Subcatchment BLL_EX504: BLL_EX504 Tc=15.0 min CN=WQ Runoff=2.61 cfs 0.184 af Runoff Area=7.420 ac 0.00% Impervious Runoff Depth=2.10"Subcatchment LU 10-1: LU 10-1 Tc=6.0 min CN=78 Runoff=28.50 cfs 1.301 af Runoff Area=79.621 ac 0.00% Impervious Runoff Depth=1.95"Subcatchment LU 2-1: LU 2-1 Tc=52.0 min CN=76 Runoff=95.39 cfs 12.924 af Runoff Area=9.880 ac 0.00% Impervious Runoff Depth=1.72"Subcatchment LU 2-10: LU 2-10 Tc=6.0 min CN=73 Runoff=30.54 cfs 1.419 af Runoff Area=21.970 ac 0.00% Impervious Runoff Depth=1.87"Subcatchment LU 2-11: LU 2-11 Tc=12.0 min CN=75 Runoff=56.01 cfs 3.427 af Runoff Area=9.720 ac 0.00% Impervious Runoff Depth=1.65"Subcatchment LU 2-12: LU 2-12 Tc=6.0 min CN=72 Runoff=28.63 cfs 1.338 af Runoff Area=15.390 ac 0.00% Impervious Runoff Depth=1.65"Subcatchment LU 2-13: LU 2-13 Tc=7.0 min CN=72 Runoff=42.90 cfs 2.119 af Runoff Area=25.920 ac 0.00% Impervious Runoff Depth=1.58"Subcatchment LU 2-14: LU 2-14 Tc=12.0 min CN=71 Runoff=54.63 cfs 3.417 af Runoff Area=4.310 ac 0.00% Impervious Runoff Depth=1.65"Subcatchment LU 2-15: LU 2-15 Tc=4.0 min CN=72 Runoff=14.27 cfs 0.593 af Runoff Area=2.560 ac 0.00% Impervious Runoff Depth=1.80"Subcatchment LU 2-16: LU 2-16 Tc=4.0 min CN=74 Runoff=9.30 cfs 0.383 af Runoff Area=8.180 ac 0.00% Impervious Runoff Depth=2.03"Subcatchment LU 2-18: LU 2-18 Tc=7.0 min CN=77 Runoff=28.55 cfs 1.381 af Runoff Area=11.910 ac 0.00% Impervious Runoff Depth=1.80"Subcatchment LU 2-2: LU 2-2 Tc=7.0 min CN=74 Runoff=36.49 cfs 1.784 af Runoff Area=47.530 ac 0.00% Impervious Runoff Depth=1.72"Subcatchment LU 2-3: LU 2-3 Tc=17.0 min CN=73 Runoff=93.04 cfs 6.829 af Runoff Area=12.300 ac 0.00% Impervious Runoff Depth=2.18"Subcatchment LU 2-4: LU 2-4 Tc=8.0 min CN=79 Runoff=44.17 cfs 2.239 af Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 122HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=9.150 ac 0.00% Impervious Runoff Depth=2.10"Subcatchment LU 2-5: LU 2-5 Tc=7.0 min CN=78 Runoff=33.25 cfs 1.605 af Runoff Area=8.904 ac 0.00% Impervious Runoff Depth=2.03"Subcatchment LU 2-7: LU 2-7 Tc=7.0 min CN=77 Runoff=31.08 cfs 1.503 af Runoff Area=5.830 ac 0.00% Impervious Runoff Depth=1.72"Subcatchment LU 2-8: LU 2-8 Tc=5.0 min CN=73 Runoff=19.09 cfs 0.838 af Runoff Area=11.210 ac 0.00% Impervious Runoff Depth=1.58"Subcatchment LU 2-9: LU 2-9 Tc=7.0 min CN=71 Runoff=29.72 cfs 1.478 af Runoff Area=5.464 ac 5.19% Impervious Runoff Depth=1.83"Subcatchment W11S: W11 Flow Length=650' Slope=0.0380 '/' Tc=13.8 min CN=WQ Runoff=12.50 cfs 0.833 af Runoff Area=0.734 ac 6.42% Impervious Runoff Depth=1.83"Subcatchment W12S: W12 Flow Length=130' Slope=0.1200 '/' Tc=2.1 min CN=WQ Runoff=2.91 cfs 0.112 af Runoff Area=1.729 ac 6.61% Impervious Runoff Depth=1.90"Subcatchment W13S: W13 Flow Length=715' Slope=0.0900 '/' Tc=9.4 min CN=WQ Runoff=4.89 cfs 0.274 af Runoff Area=2.452 ac 13.89% Impervious Runoff Depth=2.03"Subcatchment W14S: W14 Flow Length=715' Slope=0.0900 '/' Tc=9.1 min CN=WQ Runoff=7.40 cfs 0.415 af Runoff Area=21.327 ac 0.14% Impervious Runoff Depth=1.55"Subcatchment W1nS: W1n Flow Length=1,350' Slope=0.1200 '/' Tc=15.1 min CN=WQ Runoff=39.25 cfs 2.762 af Runoff Area=3.189 ac 3.48% Impervious Runoff Depth=1.63"Subcatchment W2S: W2 Flow Length=725' Slope=0.0690 '/' Tc=12.1 min CN=WQ Runoff=6.83 cfs 0.434 af Runoff Area=0.575 ac 7.12% Impervious Runoff Depth=1.81"Subcatchment W6S: W6 Flow Length=200' Slope=0.0800 '/' Tc=3.7 min CN=WQ Runoff=2.08 cfs 0.087 af Runoff Area=5.297 ac 0.00% Impervious Runoff Depth=1.52"Subcatchment WLS: WL Flow Length=300' Slope=0.2500 '/' Tc=3.2 min CN=WQ Runoff=16.75 cfs 0.673 af Avg. Flow Depth=0.94' Max Vel=4.89 fps Inflow=7.69 cfs 9.583 afReach Pipe from W2 to W1: Pipe from 27.0" Round Pipe n=0.025 L=65.8' S=0.0172 '/' Capacity=21.10 cfs Outflow=7.69 cfs 9.583 af Peak Elev=968.55' Storage=574,278 cf Inflow=121.79 cfs 10.961 afPond 300P: Pond with IESF Primary=9.93 cfs 10.697 af Secondary=1.99 cfs 0.264 af Outflow=11.93 cfs 10.961 af Peak Elev=985.24' Storage=57,653 cf Inflow=13.54 cfs 1.100 afPond 400P: County pond with IESF Outflow=5.29 cfs 1.100 af Peak Elev=972.09' Storage=2.528 af Inflow=55.80 cfs 5.886 afPond 404P: P-LU 2-2 Primary=10.32 cfs 5.884 af Secondary=0.01 cfs 0.001 af Outflow=10.32 cfs 5.885 af Peak Elev=985.25' Inflow=8.65 cfs 0.790 afPond 490: CB inlet Primary=7.47 cfs 0.774 af Secondary=1.18 cfs 0.016 af Outflow=8.65 cfs 0.790 af Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 123HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=981.21' Inflow=1.18 cfs 0.016 afPond 491P: CB inlet Outflow=1.18 cfs 0.016 af Peak Elev=985.43' Storage=3,144 cf Inflow=6.34 cfs 0.360 afPond 500P: IESF Outflow=6.30 cfs 0.360 af Peak Elev=999.60' Storage=1,431 cf Inflow=1.49 cfs 0.088 afPond 600P: rain garden Discarded=0.01 cfs 0.041 af Primary=0.78 cfs 0.048 af Outflow=0.79 cfs 0.089 af Peak Elev=1,001.77' Storage=1,537 cf Inflow=3.53 cfs 0.186 afPond 800P: rain garden Discarded=0.01 cfs 0.035 af Primary=3.30 cfs 0.151 af Outflow=3.30 cfs 0.186 af Peak Elev=992.30' Storage=2,937 cf Inflow=4.48 cfs 0.261 afPond 900P: IESF Outflow=4.05 cfs 0.261 af Peak Elev=989.00' Inflow=6.86 cfs 1.885 afPond CB-9: EX CB-9 24.0" Round Culvert n=0.025 L=94.0' S=0.0755 '/' Outflow=6.86 cfs 1.885 af Inflow=68.26 cfs 75.812 afPond LUCY: LAKE LUCY Primary=68.26 cfs 75.812 af Peak Elev=958.09' Storage=375,338 cf Inflow=133.23 cfs 40.497 afPond P-LU 2-1: P-LU 2-1 Outflow=65.16 cfs 74.834 af Peak Elev=974.52' Storage=0.446 af Inflow=30.54 cfs 1.419 afPond P-LU 2-10: P-LU 2-10 Outflow=10.98 cfs 1.254 af Peak Elev=972.48' Storage=8.492 af Inflow=112.91 cfs 8.770 afPond P-LU 2-11: P-LU 2-11 15.0" Round Culvert n=0.011 L=114.0' S=0.0004 '/' Outflow=0.40 cfs 1.874 af Peak Elev=978.32' Storage=1.107 af Inflow=28.63 cfs 1.338 afPond P-LU 2-12: P-LU 2-12 Primary=0.53 cfs 0.318 af Secondary=0.00 cfs 0.000 af Outflow=0.53 cfs 0.318 af Peak Elev=991.01' Storage=0.901 af Inflow=42.90 cfs 2.119 afPond P-LU 2-13: P-LU 2-13 24.0" Round Culvert n=0.011 L=110.0' S=0.0600 '/' Outflow=9.60 cfs 1.607 af Peak Elev=992.71' Storage=7.306 af Inflow=93.04 cfs 7.306 afPond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Outflow=0.00 cfs 0.000 af Peak Elev=975.57' Storage=0.577 af Inflow=47.80 cfs 2.586 afPond P-LU 2-4: P-LU 2-4 Primary=9.73 cfs 1.496 af Secondary=35.21 cfs 0.770 af Outflow=44.94 cfs 2.266 af Peak Elev=966.15' Storage=1.178 af Inflow=33.25 cfs 1.605 afPond P-LU 2-5: P-LU 2-5 Outflow=5.21 cfs 1.624 af Peak Elev=980.74' Storage=181,937 cf Inflow=27.54 cfs 4.177 afPond P-LU 2-6: Wetland 11 15.0" Round Culvert n=0.013 L=50.0' S=0.0104 '/' Outflow=0.00 cfs 0.000 af Peak Elev=997.94' Storage=45,543 cf Inflow=31.08 cfs 1.503 afPond P-LU 2-7: P-LU 2-7 12.0" Round Culvert n=0.013 L=60.8' S=0.0197 '/' Outflow=5.57 cfs 1.502 af Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 124HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=996.74' Storage=0.475 af Inflow=19.09 cfs 0.838 afPond P-LU 2-8: P-LU 2-8 Primary=1.83 cfs 0.477 af Secondary=0.00 cfs 0.000 af Outflow=1.83 cfs 0.477 af Peak Elev=976.65' Storage=1.478 af Inflow=29.72 cfs 1.478 afPond P-LU 2-9: P-LU 2-9 Outflow=0.00 cfs 0.000 af Peak Elev=994.67' Storage=8,595 cf Inflow=9.30 cfs 0.383 afPond P-LU-2-16: P-LU-2-16 12.0" Round Culvert n=0.013 L=93.0' S=0.0669 '/' Outflow=1.29 cfs 0.382 af Peak Elev=964.66' Storage=0.707 af Inflow=30.02 cfs 1.372 afPond P-LU10-1: P-LU 10-1 Primary=3.89 cfs 0.978 af Secondary=0.00 cfs 0.000 af Outflow=3.89 cfs 0.978 af Peak Elev=994.12' Storage=0.092 af Inflow=2.91 cfs 0.112 afPond W12: Wetland 12 15.0" Round Culvert n=0.013 L=45.0' S=0.0040 '/' Outflow=0.04 cfs 0.033 af Peak Elev=993.10' Storage=6,590 cf Inflow=4.89 cfs 0.274 afPond W13: Wetland 13 Outflow=0.78 cfs 0.147 af Peak Elev=987.55' Storage=4,781 cf Inflow=11.13 cfs 0.823 afPond W14: Wetland 14 Outflow=8.65 cfs 0.790 af Peak Elev=972.07' Storage=80,511 cf Inflow=83.99 cfs 9.964 afPond W2: Wetland 2 Primary=7.69 cfs 9.583 af Secondary=0.00 cfs 0.000 af Tertiary=2.16 cfs 0.381 af Outflow=9.70 cfs 9.963 af Peak Elev=1,000.92' Storage=10,355 cf Inflow=4.46 cfs 0.238 afPond W6: Wetland 6 Outflow=0.00 cfs 0.000 af Total Runoff Area = 401.189 ac Runoff Volume = 64.640 af Average Runoff Depth = 1.93" 93.84% Pervious = 376.470 ac 6.16% Impervious = 24.719 ac Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 125HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 300S: 300 Runoff = 105.59 cfs @ 12.28 hrs, Volume= 9.024 af, Depth= 2.81" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.755 70 Woods Good, HSG C * 0.637 71 Meadow, HSG C * 19.586 74 75% Grass cover Good, HSG C * 17.584 98 Impervious, HSG C 38.561 Weighted Average 20.977 54.40% Pervious Area 17.584 45.60% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.7 1,575 0.0350 1.27 Lag/CN Method, Subcatchment 300S: 300 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)115 110 105 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=38.561 ac Runoff Volume=9.024 af Runoff Depth=2.81" Flow Length=1,575' Slope=0.0350 '/' Tc=20.7 min CN=WQ 105.59 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 126HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 301S: 301 Runoff = 25.95 cfs @ 12.06 hrs, Volume= 1.115 af, Depth= 2.39" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.991 98 Water Surface, HSG C * 1.761 71 Meadow, HSG C * 2.200 74 75% Grass cover Good, HSG C * 0.654 98 Impervious, HSG C 5.606 Weighted Average 3.961 70.67% Pervious Area 1.644 29.33% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.5 275 0.1030 1.30 Lag/CN Method, Subcatchment 301S: 301 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=5.606 ac Runoff Volume=1.115 af Runoff Depth=2.39" Flow Length=275' Slope=0.1030 '/' Tc=3.5 min CN=WQ 25.95 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 127HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 400S: Proposed CR 117 Runoff = 7.57 cfs @ 12.25 hrs, Volume= 0.646 af, Depth= 3.53" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description 1.700 98 Paved roads w/curbs & sewers, HSG C 0.500 74 >75% Grass cover, Good, HSG C 2.200 Weighted Average 0.500 22.73% Pervious Area 1.700 77.27% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.0 Direct Entry, Subcatchment 400S: Proposed CR 117 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=2.200 ac Runoff Volume=0.646 af Runoff Depth=3.53" Tc=20.0 min CN=WQ 7.57 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 128HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 401S: 401 Runoff = 8.11 cfs @ 12.12 hrs, Volume= 0.454 af, Depth= 2.09" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.243 70 Woods Good, HSG C * 0.186 98 Water Surface, HSG C * 0.897 71 Meadow, HSG C * 0.997 74 75% Grass cover Good, HSG C * 0.276 98 Impervious, HSG C 2.600 Weighted Average 2.138 82.21% Pervious Area 0.462 17.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.9 500 0.0500 0.93 Lag/CN Method, Subcatchment 401S: 401 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=2.600 ac Runoff Volume=0.454 af Runoff Depth=2.09" Flow Length=500' Slope=0.0500 '/' Tc=8.9 min CN=WQ 8.11 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 129HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 500S: 500 Runoff = 6.34 cfs @ 12.13 hrs, Volume= 0.360 af, Depth= 2.44" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.097 71 Meadow, HSG C * 1.149 74 75% Grass cover Good, HSG C * 0.520 98 Impervious, HSG C 1.766 Weighted Average 1.246 70.56% Pervious Area 0.520 29.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.0 510 0.0400 0.95 Lag/CN Method, Subcatchment 500S: 500 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=1.766 ac Runoff Volume=0.360 af Runoff Depth=2.44" Flow Length=510' Slope=0.0400 '/' Tc=9.0 min CN=WQ 6.34 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 130HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 600S: 600 Runoff = 1.49 cfs @ 12.14 hrs, Volume= 0.088 af, Depth= 2.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.066 70 Woods Good, HSG C * 0.221 71 Meadow, HSG C * 0.163 74 75% Grass cover Good, HSG C * 0.079 98 Impervious, HSG C 0.529 Weighted Average 0.450 85.12% Pervious Area 0.079 14.88% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.2 495 0.0400 0.81 Lag/CN Method, Subcatchment 600S: 600 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.529 ac Runoff Volume=0.088 af Runoff Depth=2.00" Flow Length=495' Slope=0.0400 '/' Tc=10.2 min CN=WQ 1.49 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 131HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 700S: 700 Runoff = 21.31 cfs @ 12.11 hrs, Volume= 1.109 af, Depth= 1.60" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 2.897 70 Woods Good, HSG C * 4.268 71 Meadow, HSG C * 1.101 74 75% Grass cover Good, HSG C * 0.047 98 Impervious, HSG C 8.313 Weighted Average 8.266 99.44% Pervious Area 0.047 0.56% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.9 500 0.0900 1.05 Lag/CN Method, Subcatchment 700S: 700 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=8.313 ac Runoff Volume=1.109 af Runoff Depth=1.60" Flow Length=500' Slope=0.0900 '/' Tc=7.9 min CN=WQ 21.31 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 132HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 701S: 701 Runoff = 2.24 cfs @ 12.09 hrs, Volume= 0.108 af, Depth= 2.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.380 71 Meadow, HSG C * 0.149 74 75% Grass cover Good, HSG C * 0.107 98 Impervious, HSG C 0.636 Weighted Average 0.529 83.23% Pervious Area 0.107 16.77% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 255 0.0400 0.71 Lag/CN Method, Subcatchment 701S: 701 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.636 ac Runoff Volume=0.108 af Runoff Depth=2.04" Flow Length=255' Slope=0.0400 '/' Tc=6.0 min CN=WQ 2.24 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 133HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 800S: 800 Runoff = 3.53 cfs @ 12.11 hrs, Volume= 0.186 af, Depth= 2.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.484 71 Meadow, HSG C * 0.443 74 75% Grass cover Good, HSG C * 0.167 98 Impervious, HSG C 1.094 Weighted Average 0.927 84.77% Pervious Area 0.167 15.23% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.8 355 0.0400 0.76 Lag/CN Method, Subcatchment 800S: 800 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=1.094 ac Runoff Volume=0.186 af Runoff Depth=2.04" Flow Length=355' Slope=0.0400 '/' Tc=7.8 min CN=WQ 3.53 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 134HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 900S: 900 Runoff = 4.48 cfs @ 12.13 hrs, Volume= 0.261 af, Depth= 2.57" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.000 70 Woods Good, HSG C * 0.794 74 75% Grass cover Good, HSG C * 0.421 98 Impervious, HSG C 1.215 Weighted Average 0.794 65.34% Pervious Area 0.421 34.66% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 470 0.0300 0.83 Lag/CN Method, Subcatchment 900S: 900 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=1.215 ac Runoff Volume=0.261 af Runoff Depth=2.57" Flow Length=470' Slope=0.0300 '/' Tc=9.4 min CN=WQ 4.48 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 135HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment AS: A Runoff = 1.52 cfs @ 12.09 hrs, Volume= 0.071 af, Depth= 1.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.262 70 Woods, Good, HSG C * 0.255 74 75% Grass cover Good, HSG C 0.517 Weighted Average 0.517 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 250 0.0480 0.69 Lag/CN Method, Subcatchment AS: A Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.517 ac Runoff Volume=0.071 af Runoff Depth=1.65" Flow Length=250' Slope=0.0480 '/' Tc=6.0 min CN=WQ 1.52 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 136HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX112: BLL_EX112 Runoff = 1.40 cfs @ 12.22 hrs, Volume= 0.095 af, Depth= 2.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.520 79 CN from Previous Model 0.520 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX112: BLL_EX112 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.520 ac Runoff Volume=0.095 af Runoff Depth=2.18" Tc=15.0 min CN=79 1.40 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 137HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX113: BLL_EX113 Runoff = 0.05 cfs @ 12.30 hrs, Volume= 0.004 af, Depth= 1.51" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description 0.030 70 Woods, Good, HSG C 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.5 180 0.0830 0.15 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_EX113: BLL_EX113 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.05 0.048 0.046 0.044 0.042 0.04 0.038 0.036 0.034 0.032 0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.030 ac Runoff Volume=0.004 af Runoff Depth=1.51" Flow Length=180' Slope=0.0830 '/' Tc=20.5 min CN=70 0.05 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 138HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX206: BLL_EX206 Runoff = 0.84 cfs @ 12.22 hrs, Volume= 0.056 af, Depth= 2.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.310 79 CN from Previous Model 0.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX206: BLL_EX206 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.9 0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.310 ac Runoff Volume=0.056 af Runoff Depth=2.18" Tc=15.0 min CN=79 0.84 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 139HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX303: BLL_EX303 Runoff = 0.34 cfs @ 12.63 hrs, Volume= 0.042 af, Depth= 2.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.230 79 CN from Previous Model 0.230 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 41.4 300 0.0400 0.12 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" 4.8 500 0.1190 1.72 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 46.2 800 Total Subcatchment BLL_EX303: BLL_EX303 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.230 ac Runoff Volume=0.042 af Runoff Depth=2.18" Flow Length=800' Tc=46.2 min CN=79 0.34 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 140HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX304: BLL_EX304 Runoff = 8.86 cfs @ 12.13 hrs, Volume= 0.508 af, Depth= 2.14" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.080 98 Existing County Road * 0.400 98 Existing homes * 2.000 74 Existing lawn 0.370 70 Woods, Good, HSG C 2.850 Weighted Average 2.370 83.16% Pervious Area 0.480 16.84% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.5 300 0.1660 0.52 Sheet Flow, Range n= 0.130 P2= 2.87" Subcatchment BLL_EX304: BLL_EX304 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=2.850 ac Runoff Volume=0.508 af Runoff Depth=2.14" Flow Length=300' Slope=0.1660 '/' Tc=9.5 min CN=WQ 8.86 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 141HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX501: BLL_EX501 Runoff = 1.16 cfs @ 12.20 hrs, Volume= 0.086 af, Depth= 3.31" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.100 74 Existing lawn * 0.210 98 Existing road and sidewalk 0.310 Weighted Average 0.100 32.26% Pervious Area 0.210 67.74% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX501: BLL_EX501 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.310 ac Runoff Volume=0.086 af Runoff Depth=3.31" Tc=15.0 min CN=WQ 1.16 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 142HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX502: BLL_EX502 Runoff = 0.98 cfs @ 12.20 hrs, Volume= 0.072 af, Depth= 3.21" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.100 74 Existing lawn * 0.170 98 Existing road and sidewalk 0.270 Weighted Average 0.100 37.04% Pervious Area 0.170 62.96% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX502: BLL_EX502 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.270 ac Runoff Volume=0.072 af Runoff Depth=3.21" Tc=15.0 min CN=WQ 0.98 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 143HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX503: BLL_EX503 Runoff = 0.07 cfs @ 12.22 hrs, Volume= 0.004 af, Depth= 1.80" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.030 74 Existing lawn 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX503: BLL_EX503 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.030 ac Runoff Volume=0.004 af Runoff Depth=1.80" Tc=15.0 min CN=74 0.07 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 144HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX504: BLL_EX504 Runoff = 2.61 cfs @ 12.22 hrs, Volume= 0.184 af, Depth= 2.14" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.160 98 Existing homes * 0.870 74 Existing lawn 1.030 Weighted Average 0.870 84.47% Pervious Area 0.160 15.53% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX504: BLL_EX504 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=1.030 ac Runoff Volume=0.184 af Runoff Depth=2.14" Tc=15.0 min CN=WQ 2.61 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 145HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 10-1: LU 10-1 Runoff = 28.50 cfs @ 12.09 hrs, Volume= 1.301 af, Depth= 2.10" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 7.420 78 7.420 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 10-1: LU 10-1 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=7.420 ac Runoff Volume=1.301 af Runoff Depth=2.10" Tc=6.0 min CN=78 28.50 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 146HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-1: LU 2-1 Runoff = 95.39 cfs @ 12.71 hrs, Volume= 12.924 af, Depth= 1.95" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 79.621 76 79.621 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 52.0 Direct Entry, Subcatchment LU 2-1: LU 2-1 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)105 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=79.621 ac Runoff Volume=12.924 af Runoff Depth=1.95" Tc=52.0 min CN=76 95.39 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 147HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-10: LU 2-10 Runoff = 30.54 cfs @ 12.09 hrs, Volume= 1.419 af, Depth= 1.72" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 9.880 73 9.880 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 2-10: LU 2-10 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=9.880 ac Runoff Volume=1.419 af Runoff Depth=1.72" Tc=6.0 min CN=73 30.54 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 148HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-11: LU 2-11 Runoff = 56.01 cfs @ 12.17 hrs, Volume= 3.427 af, Depth= 1.87" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 21.970 75 21.970 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment LU 2-11: LU 2-11 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=21.970 ac Runoff Volume=3.427 af Runoff Depth=1.87" Tc=12.0 min CN=75 56.01 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 149HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-12: LU 2-12 Runoff = 28.63 cfs @ 12.09 hrs, Volume= 1.338 af, Depth= 1.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 9.720 72 9.720 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 2-12: LU 2-12 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=9.720 ac Runoff Volume=1.338 af Runoff Depth=1.65" Tc=6.0 min CN=72 28.63 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 150HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-13: LU 2-13 Runoff = 42.90 cfs @ 12.10 hrs, Volume= 2.119 af, Depth= 1.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 15.390 72 15.390 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-13: LU 2-13 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)48 46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=15.390 ac Runoff Volume=2.119 af Runoff Depth=1.65" Tc=7.0 min CN=72 42.90 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 151HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-14: LU 2-14 Runoff = 54.63 cfs @ 12.17 hrs, Volume= 3.417 af, Depth= 1.58" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 25.920 71 25.920 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment LU 2-14: LU 2-14 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=25.920 ac Runoff Volume=3.417 af Runoff Depth=1.58" Tc=12.0 min CN=71 54.63 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 152HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-15: LU 2-15 Runoff = 14.27 cfs @ 12.07 hrs, Volume= 0.593 af, Depth= 1.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 4.310 72 4.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Subcatchment LU 2-15: LU 2-15 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=4.310 ac Runoff Volume=0.593 af Runoff Depth=1.65" Tc=4.0 min CN=72 14.27 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 153HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-16: LU 2-16 Runoff = 9.30 cfs @ 12.07 hrs, Volume= 0.383 af, Depth= 1.80" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 2.560 74 2.560 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Subcatchment LU 2-16: LU 2-16 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=2.560 ac Runoff Volume=0.383 af Runoff Depth=1.80" Tc=4.0 min CN=74 9.30 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 154HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-18: LU 2-18 Runoff = 28.55 cfs @ 12.10 hrs, Volume= 1.381 af, Depth= 2.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 8.180 77 8.180 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-18: LU 2-18 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=8.180 ac Runoff Volume=1.381 af Runoff Depth=2.03" Tc=7.0 min CN=77 28.55 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 155HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-2: LU 2-2 Runoff = 36.49 cfs @ 12.10 hrs, Volume= 1.784 af, Depth= 1.80" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 11.910 74 11.910 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-2: LU 2-2 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=11.910 ac Runoff Volume=1.784 af Runoff Depth=1.80" Tc=7.0 min CN=74 36.49 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 156HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-3: LU 2-3 Runoff = 93.04 cfs @ 12.24 hrs, Volume= 6.829 af, Depth= 1.72" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 47.530 73 47.530 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 17.0 Direct Entry, Subcatchment LU 2-3: LU 2-3 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=47.530 ac Runoff Volume=6.829 af Runoff Depth=1.72" Tc=17.0 min CN=73 93.04 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 157HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-4: LU 2-4 Runoff = 44.17 cfs @ 12.11 hrs, Volume= 2.239 af, Depth= 2.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 12.300 79 12.300 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment LU 2-4: LU 2-4 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)48 46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=12.300 ac Runoff Volume=2.239 af Runoff Depth=2.18" Tc=8.0 min CN=79 44.17 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 158HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-5: LU 2-5 Runoff = 33.25 cfs @ 12.10 hrs, Volume= 1.605 af, Depth= 2.10" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 9.150 78 9.150 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-5: LU 2-5 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=9.150 ac Runoff Volume=1.605 af Runoff Depth=2.10" Tc=7.0 min CN=78 33.25 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 159HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-7: LU 2-7 Runoff = 31.08 cfs @ 12.10 hrs, Volume= 1.503 af, Depth= 2.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 8.904 77 8.904 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-7: LU 2-7 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=8.904 ac Runoff Volume=1.503 af Runoff Depth=2.03" Tc=7.0 min CN=77 31.08 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 160HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-8: LU 2-8 Runoff = 19.09 cfs @ 12.08 hrs, Volume= 0.838 af, Depth= 1.72" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 5.830 73 5.830 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment LU 2-8: LU 2-8 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=5.830 ac Runoff Volume=0.838 af Runoff Depth=1.72" Tc=5.0 min CN=73 19.09 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 161HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-9: LU 2-9 Runoff = 29.72 cfs @ 12.10 hrs, Volume= 1.478 af, Depth= 1.58" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 11.210 71 11.210 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-9: LU 2-9 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=11.210 ac Runoff Volume=1.478 af Runoff Depth=1.58" Tc=7.0 min CN=71 29.72 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 162HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W11S: W11 Runoff = 12.50 cfs @ 12.19 hrs, Volume= 0.833 af, Depth= 1.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 2.746 74 Wetland, HSG C * 0.481 70 Woods Good, HSG C * 1.503 71 Meadow, HSG C * 0.452 74 75% Grass cover Good, HSG C * 0.284 98 Impervious, HSG C 5.464 Weighted Average 5.181 94.81% Pervious Area 0.284 5.19% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.8 650 0.0380 0.79 Lag/CN Method, Subcatchment W11S: W11 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=5.464 ac Runoff Volume=0.833 af Runoff Depth=1.83" Flow Length=650' Slope=0.0380 '/' Tc=13.8 min CN=WQ 12.50 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 163HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W12S: W12 Runoff = 2.91 cfs @ 12.05 hrs, Volume= 0.112 af, Depth= 1.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.081 74 Wetland, HSG C * 0.290 70 Woods Good, HSG C * 0.316 74 75% Grass cover Good, HSG C * 0.047 98 Impervious, HSG C 0.734 Weighted Average 0.687 93.58% Pervious Area 0.047 6.42% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.1 130 0.1200 1.01 Lag/CN Method, Subcatchment W12S: W12 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.734 ac Runoff Volume=0.112 af Runoff Depth=1.83" Flow Length=130' Slope=0.1200 '/' Tc=2.1 min CN=WQ 2.91 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 164HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W13S: W13 Runoff = 4.89 cfs @ 12.13 hrs, Volume= 0.274 af, Depth= 1.90" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.038 74 Wetland, HSG C * 0.252 70 Woods Good, HSG C * 1.325 74 75% Grass cover Good, HSG C * 0.114 98 Impervious, HSG C 1.729 Weighted Average 1.615 93.39% Pervious Area 0.114 6.61% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 715 0.0900 1.27 Lag/CN Method, Subcatchment W13S: W13 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=1.729 ac Runoff Volume=0.274 af Runoff Depth=1.90" Flow Length=715' Slope=0.0900 '/' Tc=9.4 min CN=WQ 4.89 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 165HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W14S: W14 Runoff = 7.40 cfs @ 12.12 hrs, Volume= 0.415 af, Depth= 2.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.084 74 Wetland, HSG C * 0.638 70 Woods Good, HSG C * 0.014 71 Meadow, HSG C * 1.375 74 75% Grass cover Good, HSG C * 0.341 98 Impervious, HSG C 2.452 Weighted Average 2.112 86.11% Pervious Area 0.341 13.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.1 715 0.0900 1.30 Lag/CN Method, Subcatchment W14S: W14 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=2.452 ac Runoff Volume=0.415 af Runoff Depth=2.03" Flow Length=715' Slope=0.0900 '/' Tc=9.1 min CN=WQ 7.40 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 166HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W1nS: W1n Runoff = 39.25 cfs @ 12.21 hrs, Volume= 2.762 af, Depth= 1.55" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 18.460 70 Woods, Good, HSG C * 2.670 74 75% Grass cover Good, HSG C * 0.167 74 County Ditch, HSG C * 0.030 98 County Road Surface, HSG C 21.327 Weighted Average 21.297 99.86% Pervious Area 0.030 0.14% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.1 1,350 0.1200 1.49 Lag/CN Method, Subcatchment W1nS: W1n Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=21.327 ac Runoff Volume=2.762 af Runoff Depth=1.55" Flow Length=1,350' Slope=0.1200 '/' Tc=15.1 min CN=WQ 39.25 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 167HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W2S: W2 Runoff = 6.83 cfs @ 12.17 hrs, Volume= 0.434 af, Depth= 1.63" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.182 74 Wetland, HSG C * 2.735 70 Woods, Good, HSG C * 0.059 74 75% Grass cover Good, HSG C * 0.102 74 County Ditch, HSG C * 0.073 98 County Road Surface, HSG C * 0.038 98 Existing road and sidewalk 3.189 Weighted Average 3.078 96.52% Pervious Area 0.111 3.48% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.1 725 0.0690 0.99 Lag/CN Method, Subcatchment W2S: W2 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=3.189 ac Runoff Volume=0.434 af Runoff Depth=1.63" Flow Length=725' Slope=0.0690 '/' Tc=12.1 min CN=WQ 6.83 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 168HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W6S: W6 Runoff = 2.08 cfs @ 12.07 hrs, Volume= 0.087 af, Depth= 1.81" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 0.061 74 Wetland, HSG C * 0.392 71 Meadow, HSG C * 0.080 74 75% Grass cover Good, HSG C * 0.041 98 Impervious, HSG C 0.575 Weighted Average 0.534 92.88% Pervious Area 0.041 7.12% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.7 200 0.0800 0.90 Lag/CN Method, Subcatchment W6S: W6 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=0.575 ac Runoff Volume=0.087 af Runoff Depth=1.81" Flow Length=200' Slope=0.0800 '/' Tc=3.7 min CN=WQ 2.08 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 169HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment WLS: WL Runoff = 16.75 cfs @ 12.06 hrs, Volume= 0.673 af, Depth= 1.52" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Area (ac) CN Description * 5.078 70 Woods, Good, HSG C * 0.219 74 75% Grass cover Good, HSG C 5.297 Weighted Average 5.297 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.2 300 0.2500 1.54 Lag/CN Method, Subcatchment WLS: WL Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27" Runoff Area=5.297 ac Runoff Volume=0.673 af Runoff Depth=1.52" Flow Length=300' Slope=0.2500 '/' Tc=3.2 min CN=WQ 16.75 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 170HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Reach Pipe from W2 to W1: Pipe from Wetland 2 to Wetland 1 [52] Hint: Inlet/Outlet conditions not evaluated Inflow = 7.69 cfs @ 13.72 hrs, Volume= 9.583 af Outflow = 7.69 cfs @ 13.72 hrs, Volume= 9.583 af, Atten= 0%, Lag= 0.2 min Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Max. Velocity= 4.89 fps, Min. Travel Time= 0.2 min Avg. Velocity = 1.38 fps, Avg. Travel Time= 0.8 min Peak Storage= 103 cf @ 13.72 hrs Average Depth at Peak Storage= 0.94' Bank-Full Depth= 2.25' Flow Area= 4.0 sf, Capacity= 21.10 cfs 27.0" Round Pipe n= 0.025 Length= 65.8' Slope= 0.0172 '/' Inlet Invert= 965.96', Outlet Invert= 964.83' Reach Pipe from W2 to W1: Pipe from Wetland 2 to Wetland 1 Inflow Outflow Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 Avg. Flow Depth=0.94' Max Vel=4.89 fps 27.0" Round Pipe n=0.025 L=65.8' S=0.0172 '/' Capacity=21.10 cfs 7.69 cfs 7.69 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 171HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 300P: Pond with IESF Inflow Area = 73.792 ac, 31.33% Impervious, Inflow Depth = 1.78" for 10y 24hr event Inflow = 121.79 cfs @ 12.26 hrs, Volume= 10.961 af Outflow = 11.93 cfs @ 13.67 hrs, Volume= 10.961 af, Atten= 90%, Lag= 84.8 min Primary = 9.93 cfs @ 13.67 hrs, Volume= 10.697 af Secondary = 1.99 cfs @ 13.67 hrs, Volume= 0.264 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 965.00' Surf.Area= 59,664 sf Storage= 254,284 cf Peak Elev= 968.55' @ 13.67 hrs Surf.Area= 99,965 sf Storage= 574,278 cf (319,994 cf above start) Plug-Flow detention time= 2,322.0 min calculated for 5.123 af (47% of inflow) Center-of-Mass det. time= 1,137.7 min ( 1,934.4 - 796.7 ) Volume Invert Avail.Storage Storage Description #1 955.00' 779,932 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 955.00 7,650 0 0 956.00 11,005 9,328 9,328 958.00 16,690 27,695 37,023 960.00 23,225 39,915 76,938 962.00 31,363 54,588 131,526 963.00 36,141 33,752 165,278 964.00 41,104 38,623 203,900 965.00 59,664 50,384 254,284 965.01 63,414 615 254,899 965.02 80,995 722 255,621 965.95 85,712 77,519 333,140 970.50 110,680 446,792 779,932 Device Routing Invert Outlet Devices #1 Primary 960.22'42.0" Round RCP_Round 42" L= 43.0' Ke= 0.500 Inlet / Outlet Invert= 960.22' / 960.00' S= 0.0051 '/' Cc= 0.900 n= 0.013, Flow Area= 9.62 sf #2 Device 1 965.95'Custom Weir, Cv= 2.62 (C= 3.28) Head (feet) 0.00 2.35 2.35 5.00 Width (feet) 0.50 0.50 7.00 7.00 #3 Device 2 960.00'42.0" Round RCP_Round 42" L= 10.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 960.00' / 960.00' S= 0.0000 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 9.62 sf #4 Device 1 963.00'6.0" Vert. 2 - 6" Draintile Outlet X 2.00 C= 0.600 #5 Device 4 965.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 965.00' - 965.01' Excluded Surface area = 59,664 sf #6 Secondary 960.22'36.0" Round RCP_Round 36" L= 43.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 960.22' / 960.00' S= 0.0051 '/' Cc= 0.900 Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 172HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf #7 Device 6 968.30'5.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Primary OutFlow Max=9.93 cfs @ 13.67 hrs HW=968.55' TW=958.09' (Dynamic Tailwater) 1=RCP_Round 42" (Passes 9.93 cfs of 118.81 cfs potential flow) 2=Custom Weir (Weir Controls 9.47 cfs @ 3.26 fps) 3=RCP_Round 42" (Passes 9.47 cfs of 101.81 cfs potential flow) 4=2 - 6" Draintile Outlet (Passes 0.46 cfs of 4.35 cfs potential flow) 5=Iron Enhanced Filtration (Exfiltration Controls 0.46 cfs) Secondary OutFlow Max=1.99 cfs @ 13.67 hrs HW=968.55' TW=958.09' (Dynamic Tailwater) 6=RCP_Round 36" (Passes 1.99 cfs of 88.93 cfs potential flow) 7=Sharp-Crested Rectangular Weir (Weir Controls 1.99 cfs @ 1.63 fps) Pond 300P: Pond with IESF Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)130 120 110 100 90 80 70 60 50 40 30 20 10 0 Inflow Area=73.792 ac Peak Elev=968.55' Storage=574,278 cf 121.79 cfs 11.93 cfs 9.93 cfs 1.99 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 173HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 400P: County pond with IESF Inflow Area = 4.800 ac, 45.05% Impervious, Inflow Depth = 2.75" for 10y 24hr event Inflow = 13.54 cfs @ 12.15 hrs, Volume= 1.100 af Outflow = 5.29 cfs @ 12.56 hrs, Volume= 1.100 af, Atten= 61%, Lag= 24.6 min Primary = 5.29 cfs @ 12.56 hrs, Volume= 1.100 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 984.00' Surf.Area= 10,824 sf Storage= 37,248 cf Peak Elev= 985.24' @ 12.56 hrs Surf.Area= 17,918 sf Storage= 57,653 cf (20,405 cf above start) Plug-Flow detention time= 1,724.2 min calculated for 0.245 af (22% of inflow) Center-of-Mass det. time= 373.7 min ( 1,150.9 - 777.1 ) Volume Invert Avail.Storage Storage Description #1 974.00' 185,067 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 974.00 485 0 0 975.00 868 677 677 976.00 1,334 1,101 1,778 978.00 2,522 3,856 5,634 980.00 4,030 6,552 12,186 982.00 5,839 9,869 22,055 983.00 6,862 6,351 28,405 984.00 10,824 8,843 37,248 984.01 11,174 110 37,358 984.02 15,262 132 37,490 984.45 16,243 6,774 44,264 985.00 17,254 9,212 53,475 986.00 20,050 18,652 72,127 987.00 22,870 21,460 93,587 991.00 22,870 91,480 185,067 Device Routing Invert Outlet Devices #1 Primary 982.00'15.0" Round RCP_Round 15" L= 29.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 982.00' / 982.00' S= 0.0000 '/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #2 Device 1 984.45'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 3.0' Crest Height #3 Device 2 982.00'15.0" Round RCP_Round 15" L= 22.0' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 981.75' / 982.00' S= -0.0114 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #4 Device 1 982.00'6.0" Vert. Draintile Outlet C= 0.600 #5 Device 4 984.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 984.00' - 984.01' Excluded Surface area = 10,824 sf Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 174HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Primary OutFlow Max=5.29 cfs @ 12.56 hrs HW=985.24' TW=979.23' (Dynamic Tailwater) 1=RCP_Round 15" (Passes 5.29 cfs of 10.14 cfs potential flow) 2=Sharp-Crested Rectangular Weir (Passes 5.24 cfs of 9.06 cfs potential flow) 3=RCP_Round 15" (Inlet Controls 5.24 cfs @ 4.27 fps) 4=Draintile Outlet (Passes 0.04 cfs of 1.63 cfs potential flow) 5=Iron Enhanced Filtration (Exfiltration Controls 0.04 cfs) Pond 400P: County pond with IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=4.800 ac Peak Elev=985.24' Storage=57,653 cf 13.54 cfs 5.29 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 175HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 404P: P-LU 2-2 [86] Warning: Oscillations may require smaller dt (severity=21847) Inflow = 55.80 cfs @ 12.09 hrs, Volume= 5.886 af Outflow = 10.32 cfs @ 12.09 hrs, Volume= 5.885 af, Atten= 81%, Lag= 0.0 min Primary = 10.32 cfs @ 12.09 hrs, Volume= 5.884 af Secondary = 0.01 cfs @ 13.94 hrs, Volume= 0.001 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 969.90' Surf.Area= 0.094 ac Storage= 0.085 af Peak Elev= 972.09' @ 13.94 hrs Surf.Area= 3.269 ac Storage= 2.528 af (2.443 af above start) Plug-Flow detention time= 384.2 min calculated for 5.800 af (99% of inflow) Center-of-Mass det. time= 181.6 min ( 2,562.7 - 2,381.0 ) Volume Invert Avail.Storage Storage Description #1 968.00' 11.223 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.010 0.000 0.000 969.00 0.040 0.025 0.025 970.00 0.100 0.070 0.095 971.00 0.533 0.316 0.411 972.00 3.130 1.831 2.243 973.00 4.690 3.910 6.153 974.00 5.450 5.070 11.223 Device Routing Invert Outlet Devices #1 Primary 968.58'30.0" Round RCP_Round 30" L= 85.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 968.58' / 968.08' S= 0.0059 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 4.91 sf #2 Secondary 972.01'15.0" Round Culvert L= 114.0' Ke= 0.500 Inlet / Outlet Invert= 971.97' / 972.01' S= -0.0004 '/' Cc= 0.900 n= 0.011, Flow Area= 1.23 sf Primary OutFlow Max=9.98 cfs @ 12.09 hrs HW=971.03' TW=970.82' (Dynamic Tailwater) 1=RCP_Round 30" (Outlet Controls 9.98 cfs @ 2.58 fps) Secondary OutFlow Max=0.01 cfs @ 13.94 hrs HW=972.09' TW=971.93' (Dynamic Tailwater) 2=Culvert (Barrel Controls 0.01 cfs @ 0.31 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 176HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 404P: P-LU 2-2 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)60 55 50 45 40 35 30 25 20 15 10 5 0 Peak Elev=972.09' Storage=2.528 af 55.80 cfs 10.32 cfs 10.32 cfs 0.01 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 177HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 490: CB inlet [57] Hint: Peaked at 985.25' (Flood elevation advised) Inflow Area = 5.397 ac, 16.24% Impervious, Inflow Depth = 1.76" for 10y 24hr event Inflow = 8.65 cfs @ 12.22 hrs, Volume= 0.790 af Outflow = 8.65 cfs @ 12.22 hrs, Volume= 0.790 af, Atten= 0%, Lag= 0.1 min Primary = 7.47 cfs @ 12.22 hrs, Volume= 0.774 af Secondary = 1.18 cfs @ 12.22 hrs, Volume= 0.016 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 985.25' @ 12.22 hrs Device Routing Invert Outlet Devices #1 Primary 984.63'19.0" Horiz. Orifice/Grate C= 0.600 in 22.0" Grate (75% open area) Limited to weir flow at low heads #2 Secondary 985.10'8.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=7.47 cfs @ 12.22 hrs HW=985.25' TW=966.67' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 7.47 cfs @ 3.79 fps) Secondary OutFlow Max=1.18 cfs @ 12.22 hrs HW=985.25' TW=981.21' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir (Weir Controls 1.18 cfs @ 0.98 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 178HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 490: CB inlet Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)9 8 7 6 5 4 3 2 1 0 Inflow Area=5.397 ac Peak Elev=985.25' 8.65 cfs 8.65 cfs 7.47 cfs 1.18 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 179HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 491P: CB inlet [57] Hint: Peaked at 981.21' (Flood elevation advised) Inflow = 1.18 cfs @ 12.22 hrs, Volume= 0.016 af Outflow = 1.18 cfs @ 12.23 hrs, Volume= 0.016 af, Atten= 0%, Lag= 0.1 min Primary = 1.18 cfs @ 12.23 hrs, Volume= 0.016 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 981.21' @ 12.23 hrs Device Routing Invert Outlet Devices #1 Primary 981.04'19.0" Horiz. Orifice/Grate C= 0.600 in 22.0" Grate (75% open area) Limited to weir flow at low heads Primary OutFlow Max=1.18 cfs @ 12.23 hrs HW=981.21' TW=966.68' (Dynamic Tailwater) 1=Orifice/Grate (Weir Controls 1.18 cfs @ 1.36 fps) Pond 491P: CB inlet Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Peak Elev=981.21' 1.18 cfs 1.18 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 180HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 500P: IESF Inflow Area = 1.766 ac, 29.44% Impervious, Inflow Depth = 2.44" for 10y 24hr event Inflow = 6.34 cfs @ 12.13 hrs, Volume= 0.360 af Outflow = 6.30 cfs @ 12.13 hrs, Volume= 0.360 af, Atten= 1%, Lag= 0.4 min Primary = 6.30 cfs @ 12.13 hrs, Volume= 0.360 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 985.43' @ 12.13 hrs Surf.Area= 2,887 sf Storage= 3,144 cf Plug-Flow detention time= 306.7 min calculated for 0.360 af (100% of inflow) Center-of-Mass det. time= 306.8 min ( 1,088.2 - 781.5 ) Volume Invert Avail.Storage Storage Description #1 984.00' 6,740 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 984.00 0 0 0 984.01 200 1 1 984.02 1,600 9 10 985.00 2,468 1,993 2,003 985.50 2,960 1,357 3,360 986.00 3,520 1,620 4,980 986.50 3,520 1,760 6,740 Device Routing Invert Outlet Devices #1 Primary 982.00'6.0" Vert. Draintile Outlet C= 0.600 #2 Device 1 984.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 984.00' - 984.01' Excluded Surface area = 0 sf #3 Primary 985.30'60.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=6.30 cfs @ 12.13 hrs HW=985.43' TW=978.52' (Dynamic Tailwater) 1=Draintile Outlet (Passes 0.02 cfs of 1.68 cfs potential flow) 2=Iron Enhanced Filtration (Exfiltration Controls 0.02 cfs) 3=Broad-Crested Rectangular Weir (Weir Controls 6.28 cfs @ 0.83 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 181HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 500P: IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=1.766 ac Peak Elev=985.43' Storage=3,144 cf 6.34 cfs 6.30 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 182HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 600P: rain garden [86] Warning: Oscillations may require smaller dt (severity=1192) Inflow Area = 2.197 ac, 13.03% Impervious, Inflow Depth = 0.48" for 10y 24hr event Inflow = 1.49 cfs @ 12.14 hrs, Volume= 0.088 af Outflow = 0.79 cfs @ 12.31 hrs, Volume= 0.089 af, Atten= 47%, Lag= 10.3 min Discarded = 0.01 cfs @ 12.19 hrs, Volume= 0.041 af Primary = 0.78 cfs @ 12.31 hrs, Volume= 0.048 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 999.60' @ 12.31 hrs Surf.Area= 2,045 sf Storage= 1,431 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 633.7 min ( 1,430.3 - 796.6 ) Volume Invert Avail.Storage Storage Description #1 998.70' 6,330 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 998.70 1,000 0 0 999.50 2,045 1,218 1,218 1,000.00 2,045 1,023 2,240 1,002.00 2,045 4,090 6,330 Device Routing Invert Outlet Devices #1 Primary 999.50'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 998.70'0.200 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.19 hrs HW=999.50' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.78 cfs @ 12.31 hrs HW=999.60' TW=957.42' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.78 cfs @ 0.75 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 183HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 600P: rain garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=2.197 ac Peak Elev=999.60' Storage=1,431 cf 1.49 cfs 0.79 cfs 0.01 cfs 0.78 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 184HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 800P: rain garden Inflow Area = 1.094 ac, 15.23% Impervious, Inflow Depth = 2.04" for 10y 24hr event Inflow = 3.53 cfs @ 12.11 hrs, Volume= 0.186 af Outflow = 3.30 cfs @ 12.14 hrs, Volume= 0.186 af, Atten= 6%, Lag= 1.8 min Discarded = 0.01 cfs @ 12.14 hrs, Volume= 0.035 af Primary = 3.30 cfs @ 12.14 hrs, Volume= 0.151 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,001.77' @ 12.14 hrs Surf.Area= 1,920 sf Storage= 1,537 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 279.6 min ( 1,073.2 - 793.6 ) Volume Invert Avail.Storage Storage Description #1 1,000.70' 2,017 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,000.70 850 0 0 1,001.00 1,350 330 330 1,001.50 1,600 738 1,067 1,002.00 2,200 950 2,017 Device Routing Invert Outlet Devices #1 Primary 1,001.50'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 1,000.70'0.200 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.14 hrs HW=1,001.77' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=3.30 cfs @ 12.14 hrs HW=1,001.77' TW=999.78' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 3.30 cfs @ 1.24 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 185HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 800P: rain garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=1.094 ac Peak Elev=1,001.77' Storage=1,537 cf 3.53 cfs 3.30 cfs 0.01 cfs 3.30 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 186HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 900P: IESF Inflow Area = 1.215 ac, 34.66% Impervious, Inflow Depth = 2.57" for 10y 24hr event Inflow = 4.48 cfs @ 12.13 hrs, Volume= 0.261 af Outflow = 4.05 cfs @ 12.17 hrs, Volume= 0.261 af, Atten= 10%, Lag= 2.6 min Primary = 4.05 cfs @ 12.17 hrs, Volume= 0.261 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 992.30' @ 12.17 hrs Surf.Area= 2,919 sf Storage= 2,937 cf Plug-Flow detention time= 417.0 min calculated for 0.261 af (100% of inflow) Center-of-Mass det. time= 417.0 min ( 1,195.0 - 778.0 ) Volume Invert Avail.Storage Storage Description #1 991.00' 3,533 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.00 0 0 0 991.01 100 0 0 991.02 1,650 9 9 991.50 2,131 907 917 992.00 2,605 1,184 2,101 992.50 3,124 1,432 3,533 Device Routing Invert Outlet Devices #1 Primary 989.00'6.0" Vert. Draintile Outlet C= 0.600 #2 Device 1 991.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 991.00' - 991.01' Excluded Surface area = 0 sf #3 Primary 992.00'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=4.05 cfs @ 12.17 hrs HW=992.30' TW=987.52' (Dynamic Tailwater) 1=Draintile Outlet (Passes 0.01 cfs of 1.65 cfs potential flow) 2=Iron Enhanced Filtration (Exfiltration Controls 0.01 cfs) 3=Broad-Crested Rectangular Weir (Weir Controls 4.04 cfs @ 1.33 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 187HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 900P: IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 Inflow Area=1.215 ac Peak Elev=992.30' Storage=2,937 cf 4.48 cfs 4.05 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 188HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond CB-9: EX CB-9 [57] Hint: Peaked at 989.00' (Flood elevation advised) Inflow Area = 11.464 ac, 0.00% Impervious, Inflow Depth = 1.97" for 10y 24hr event Inflow = 6.86 cfs @ 12.57 hrs, Volume= 1.885 af Outflow = 6.86 cfs @ 12.58 hrs, Volume= 1.885 af, Atten= 0%, Lag= 0.1 min Primary = 6.86 cfs @ 12.58 hrs, Volume= 1.885 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 989.00' @ 12.58 hrs Device Routing Invert Outlet Devices #1 Primary 987.85'24.0" Round CMP_Round 24" L= 94.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 987.85' / 980.75' S= 0.0755 '/' Cc= 0.900 n= 0.025 Corrugated metal, Flow Area= 3.14 sf Primary OutFlow Max=6.86 cfs @ 12.58 hrs HW=989.00' TW=979.24' (Dynamic Tailwater) 1=CMP_Round 24" (Inlet Controls 6.86 cfs @ 3.66 fps) Pond CB-9: EX CB-9 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=11.464 ac Peak Elev=989.00' 24.0" Round Culvert n=0.025 L=94.0' S=0.0755 '/' 6.86 cfs 6.86 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 189HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond LUCY: LAKE LUCY [40] Hint: Not Described (Outflow=Inflow) Inflow = 68.26 cfs @ 13.57 hrs, Volume= 75.812 af Primary = 68.26 cfs @ 13.58 hrs, Volume= 75.812 af, Atten= 0%, Lag= 0.1 min Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Pond LUCY: LAKE LUCY Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 68.26 cfs 68.26 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 190HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-1: P-LU 2-1 [86] Warning: Oscillations may require smaller dt (severity=57514) Inflow = 133.23 cfs @ 12.65 hrs, Volume= 40.497 af Outflow = 65.16 cfs @ 13.64 hrs, Volume= 74.834 af, Atten= 51%, Lag= 58.9 min Primary = 65.16 cfs @ 13.64 hrs, Volume= 74.834 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 958.09' @ 13.64 hrs Surf.Area= 600,936 sf Storage= 375,338 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 3,400.9 min ( 4,758.7 - 1,357.8 ) Volume Invert Avail.Storage Storage Description #1 957.00' 6,136,244 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 957.00 8,105 0 0 958.00 557,600 282,853 282,853 960.00 1,540,893 2,098,493 2,381,346 962.00 2,214,005 3,754,898 6,136,244 Device Routing Invert Outlet Devices #1 Primary 957.00'20.0' long Broad-Crested Rectangular Weir X 0.00 Head (feet) 0.50 1.00 1.50 Coef. (English) 3.00 3.00 3.00 #2 Primary 956.50'Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 0.00 0.50 1.00 1.50 2.00 2.50 Width (feet) 2.00 6.00 16.00 25.00 37.00 45.00 Primary OutFlow Max=65.16 cfs @ 13.64 hrs HW=958.09' TW=0.00' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) 2=Custom Weir/Orifice (Weir Controls 65.16 cfs @ 3.25 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 191HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-1: P-LU 2-1 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 Peak Elev=958.09' Storage=375,338 cf 133.23 cfs 65.16 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 192HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-10: P-LU 2-10 Inflow Area = 9.880 ac, 0.00% Impervious, Inflow Depth = 1.72" for 10y 24hr event Inflow = 30.54 cfs @ 12.09 hrs, Volume= 1.419 af Outflow = 10.98 cfs @ 12.31 hrs, Volume= 1.254 af, Atten= 64%, Lag= 13.2 min Primary = 10.98 cfs @ 12.31 hrs, Volume= 1.254 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 974.52' @ 12.31 hrs Surf.Area= 0.161 ac Storage= 0.446 af Plug-Flow detention time= 84.6 min calculated for 1.254 af (88% of inflow) Center-of-Mass det. time= 38.4 min ( 849.0 - 810.6 ) Volume Invert Avail.Storage Storage Description #1 968.00' 1.289 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.009 0.000 0.000 972.00 0.070 0.158 0.158 974.00 0.140 0.210 0.368 976.00 0.220 0.360 0.728 978.00 0.341 0.561 1.289 Device Routing Invert Outlet Devices #1 Primary 972.10'18.0" Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=10.98 cfs @ 12.31 hrs HW=974.52' TW=971.57' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 10.98 cfs @ 6.22 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 193HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-10: P-LU 2-10 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=9.880 ac Peak Elev=974.52' Storage=0.446 af 30.54 cfs 10.98 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 194HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-11: P-LU 2-11 Inflow = 112.91 cfs @ 12.17 hrs, Volume= 8.770 af Outflow = 0.40 cfs @ 24.40 hrs, Volume= 1.874 af, Atten= 100%, Lag= 733.4 min Primary = 0.40 cfs @ 24.40 hrs, Volume= 1.874 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 972.48' @ 24.40 hrs Surf.Area= 4.952 ac Storage= 8.492 af Plug-Flow detention time= 3,855.9 min calculated for 1.874 af (21% of inflow) Center-of-Mass det. time= 3,729.5 min ( 4,578.2 - 848.7 ) Volume Invert Avail.Storage Storage Description #1 968.00' 93.400 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.360 0.000 0.000 970.00 1.000 1.360 1.360 972.00 4.000 5.000 6.360 976.00 12.000 32.000 38.360 980.00 15.520 55.040 93.400 Device Routing Invert Outlet Devices #1 Primary 972.01'15.0" Round Culvert L= 114.0' Ke= 0.500 Inlet / Outlet Invert= 972.01' / 971.97' S= 0.0004 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 1.23 sf Primary OutFlow Max=0.40 cfs @ 24.40 hrs HW=972.48' TW=970.40' (Dynamic Tailwater) 1=Culvert (Barrel Controls 0.40 cfs @ 1.43 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 195HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-11: P-LU 2-11 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)125 120 115 110 105 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Peak Elev=972.48' Storage=8.492 af 15.0" Round Culvert n=0.011 L=114.0' S=0.0004 '/' 112.91 cfs 0.40 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 196HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-12: P-LU 2-12 Inflow Area = 9.720 ac, 0.00% Impervious, Inflow Depth = 1.65" for 10y 24hr event Inflow = 28.63 cfs @ 12.09 hrs, Volume= 1.338 af Outflow = 0.53 cfs @ 18.03 hrs, Volume= 0.318 af, Atten= 98%, Lag= 356.5 min Primary = 0.53 cfs @ 18.03 hrs, Volume= 0.318 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 978.32' @ 18.03 hrs Surf.Area= 0.287 ac Storage= 1.107 af Plug-Flow detention time= 533.2 min calculated for 0.318 af (24% of inflow) Center-of-Mass det. time= 438.1 min ( 1,250.6 - 812.5 ) Volume Invert Avail.Storage Storage Description #1 972.00' 2.680 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 972.00 0.080 0.000 0.000 978.00 0.260 1.020 1.020 980.00 0.430 0.690 1.710 982.00 0.540 0.970 2.680 Device Routing Invert Outlet Devices #1 Primary 978.00'18.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 980.00'100.0' long x 26.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.53 cfs @ 18.03 hrs HW=978.32' TW=972.35' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 0.53 cfs @ 1.92 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=972.00' TW=968.00' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 197HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-12: P-LU 2-12 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=9.720 ac Peak Elev=978.32' Storage=1.107 af 28.63 cfs 0.53 cfs 0.53 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 198HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-13: P-LU 2-13 Inflow Area = 15.390 ac, 0.00% Impervious, Inflow Depth = 1.65" for 10y 24hr event Inflow = 42.90 cfs @ 12.10 hrs, Volume= 2.119 af Outflow = 9.60 cfs @ 12.55 hrs, Volume= 1.607 af, Atten= 78%, Lag= 26.8 min Primary = 9.60 cfs @ 12.55 hrs, Volume= 1.607 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 991.01' @ 12.55 hrs Surf.Area= 0.321 ac Storage= 0.901 af Plug-Flow detention time= 162.9 min calculated for 1.607 af (76% of inflow) Center-of-Mass det. time= 94.3 min ( 907.7 - 813.4 ) Volume Invert Avail.Storage Storage Description #1 986.00' 2.750 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 986.00 0.054 0.000 0.000 989.60 0.230 0.511 0.511 993.00 0.450 1.156 1.667 994.00 0.540 0.495 2.162 995.00 0.635 0.587 2.750 Device Routing Invert Outlet Devices #1 Primary 989.60'24.0" Round Culvert L= 110.0' Ke= 0.500 Inlet / Outlet Invert= 989.60' / 983.00' S= 0.0600 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 3.14 sf Primary OutFlow Max=9.60 cfs @ 12.55 hrs HW=991.01' TW=971.25' (Dynamic Tailwater) 1=Culvert (Inlet Controls 9.60 cfs @ 4.05 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 199HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-13: P-LU 2-13 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)48 46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=15.390 ac Peak Elev=991.01' Storage=0.901 af 24.0" Round Culvert n=0.011 L=110.0' S=0.0600 '/' 42.90 cfs 9.60 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 200HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Inflow Area = 53.360 ac, 0.00% Impervious, Inflow Depth = 1.64" for 10y 24hr event Inflow = 93.04 cfs @ 12.24 hrs, Volume= 7.306 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 992.71' @ 250.00 hrs Surf.Area= 8.438 ac Storage= 7.306 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 991.90' 52.450 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 991.90 5.100 0.000 0.000 992.00 5.900 0.550 0.550 994.00 13.000 18.900 19.450 996.00 20.000 33.000 52.450 Device Routing Invert Outlet Devices #1 Primary 995.00'30.0' long Broad-Crested Rectangular Weir Head (feet) 0.50 1.00 Coef. (English) 2.80 2.80 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=991.90' TW=957.00' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 201HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=53.360 ac Peak Elev=992.71' Storage=7.306 af 93.04 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 202HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-4: P-LU 2-4 Inflow Area = 13.940 ac, 3.87% Impervious, Inflow Depth = 2.23" for 10y 24hr event Inflow = 47.80 cfs @ 12.12 hrs, Volume= 2.586 af Outflow = 44.94 cfs @ 12.15 hrs, Volume= 2.266 af, Atten= 6%, Lag= 1.8 min Primary = 9.73 cfs @ 12.15 hrs, Volume= 1.496 af Secondary = 35.21 cfs @ 12.15 hrs, Volume= 0.770 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 975.57' @ 12.15 hrs Surf.Area= 0.187 ac Storage= 0.577 af Plug-Flow detention time= 88.7 min calculated for 2.266 af (88% of inflow) Center-of-Mass det. time= 42.3 min ( 841.5 - 799.2 ) Volume Invert Avail.Storage Storage Description #1 970.00' 1.120 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 970.00 0.020 0.000 0.000 974.00 0.140 0.320 0.320 978.00 0.260 0.800 1.120 Device Routing Invert Outlet Devices #1 Primary 974.00'21.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 975.00'30.0' long x 15.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=9.73 cfs @ 12.15 hrs HW=975.57' TW=971.23' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 9.73 cfs @ 4.27 fps) Secondary OutFlow Max=35.21 cfs @ 12.15 hrs HW=975.57' TW=971.23' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir (Weir Controls 35.21 cfs @ 2.05 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 203HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-4: P-LU 2-4 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)50 45 40 35 30 25 20 15 10 5 0 Inflow Area=13.940 ac Peak Elev=975.57' Storage=0.577 af 47.80 cfs 44.94 cfs 9.73 cfs 35.21 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 204HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-5: P-LU 2-5 Inflow Area = 9.150 ac, 0.00% Impervious, Inflow Depth = 2.10" for 10y 24hr event Inflow = 33.25 cfs @ 12.10 hrs, Volume= 1.605 af Outflow = 5.21 cfs @ 12.60 hrs, Volume= 1.624 af, Atten= 84%, Lag= 30.2 min Primary = 5.21 cfs @ 12.60 hrs, Volume= 1.624 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 965.00' Surf.Area= 0.200 ac Storage= 0.447 af Peak Elev= 966.15' @ 12.60 hrs Surf.Area= 0.534 ac Storage= 1.178 af (0.731 af above start) Plug-Flow detention time= 262.9 min calculated for 1.177 af (73% of inflow) Center-of-Mass det. time= 121.6 min ( 924.1 - 802.4 ) Volume Invert Avail.Storage Storage Description #1 956.00' 2.352 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 956.00 0.004 0.000 0.000 962.00 0.030 0.102 0.102 965.00 0.200 0.345 0.447 968.00 1.070 1.905 2.352 Device Routing Invert Outlet Devices #1 Primary 962.98'18.0" Round Culvert L= 30.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 962.98' / 962.83' S= 0.0050 '/' Cc= 0.900 n= 0.013, Flow Area= 1.77 sf #2 Device 1 964.83'15.0" Round Culvert L= 15.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 963.38' / 964.83' S= -0.0967 '/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #3 Device 1 966.00'18.0" W x 12.0" H Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=5.21 cfs @ 12.60 hrs HW=966.15' TW=957.78' (Dynamic Tailwater) 1=Culvert (Passes 5.21 cfs of 13.24 cfs potential flow) 2=Culvert (Inlet Controls 4.93 cfs @ 4.02 fps) 3=Orifice/Grate (Orifice Controls 0.28 cfs @ 1.25 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 205HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-5: P-LU 2-5 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=9.150 ac Peak Elev=966.15' Storage=1.178 af 33.25 cfs 5.21 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 206HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-6: Wetland 11 Inflow Area = 23.494 ac, 12.62% Impervious, Inflow Depth = 2.13" for 10y 24hr event Inflow = 27.54 cfs @ 12.19 hrs, Volume= 4.177 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 980.74' @ 250.00 hrs Surf.Area= 112,080 sf Storage= 181,937 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 978.00' 1,458,300 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 978.00 16,553 0 0 980.00 90,625 107,178 107,178 982.00 148,800 239,425 346,603 984.00 171,115 319,915 666,518 986.00 197,334 368,449 1,034,967 988.00 225,999 423,333 1,458,300 Device Routing Invert Outlet Devices #1 Primary 982.57'15.0" Round RCP_Round 15" L= 50.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 982.57' / 982.05' S= 0.0104 '/' Cc= 0.900 n= 0.013 Concrete sewer w/manholes & inlets, Flow Area= 1.23 sf Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=978.00' TW=965.00' (Dynamic Tailwater) 1=RCP_Round 15" ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 207HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-6: Wetland 11 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=23.494 ac Peak Elev=980.74' Storage=181,937 cf 15.0" Round Culvert n=0.013 L=50.0' S=0.0104 '/' 27.54 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 208HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-7: P-LU 2-7 Inflow Area = 8.904 ac, 0.00% Impervious, Inflow Depth = 2.03" for 10y 24hr event Inflow = 31.08 cfs @ 12.10 hrs, Volume= 1.503 af Outflow = 5.57 cfs @ 12.58 hrs, Volume= 1.502 af, Atten= 82%, Lag= 28.9 min Primary = 5.57 cfs @ 12.58 hrs, Volume= 1.502 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 995.27' Surf.Area= 7,683 sf Storage= 18,263 cf Peak Elev= 997.94' @ 12.58 hrs Surf.Area= 12,793 sf Storage= 45,543 cf (27,280 cf above start) Plug-Flow detention time= 214.2 min calculated for 1.083 af (72% of inflow) Center-of-Mass det. time= 88.5 min ( 892.8 - 804.2 ) Volume Invert Avail.Storage Storage Description #1 991.00' 117,493 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.00 871 0 0 995.27 7,683 18,263 18,263 996.00 8,932 6,064 24,327 998.00 12,906 21,838 46,165 1,000.00 18,379 31,285 77,450 1,002.00 21,664 40,043 117,493 Device Routing Invert Outlet Devices #1 Primary 995.27'12.0" Round RCP_Round 12" L= 60.8' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 995.27' / 994.07' S= 0.0197 '/' Cc= 0.900 n= 0.013, Flow Area= 0.79 sf Primary OutFlow Max=5.57 cfs @ 12.58 hrs HW=997.94' TW=989.00' (Dynamic Tailwater) 1=RCP_Round 12" (Inlet Controls 5.57 cfs @ 7.10 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 209HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-7: P-LU 2-7 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=8.904 ac Peak Elev=997.94' Storage=45,543 cf 12.0" Round Culvert n=0.013 L=60.8' S=0.0197 '/' 31.08 cfs 5.57 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 210HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-8: P-LU 2-8 Inflow Area = 5.830 ac, 0.00% Impervious, Inflow Depth = 1.72" for 10y 24hr event Inflow = 19.09 cfs @ 12.08 hrs, Volume= 0.838 af Outflow = 1.83 cfs @ 13.06 hrs, Volume= 0.477 af, Atten= 90%, Lag= 58.8 min Primary = 1.83 cfs @ 13.06 hrs, Volume= 0.477 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 996.74' @ 13.06 hrs Surf.Area= 0.170 ac Storage= 0.475 af Plug-Flow detention time= 240.8 min calculated for 0.477 af (57% of inflow) Center-of-Mass det. time= 158.2 min ( 967.9 - 809.7 ) Volume Invert Avail.Storage Storage Description #1 992.00' 0.720 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 992.00 0.040 0.000 0.000 996.00 0.140 0.360 0.360 998.00 0.220 0.360 0.720 Device Routing Invert Outlet Devices #1 Primary 996.00'12.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 997.00'50.0' long x 20.0' breadth Broad-Crested Rectangular Weir X 2.00 Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=1.83 cfs @ 13.06 hrs HW=996.74' TW=992.41' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 1.83 cfs @ 2.93 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=992.00' TW=991.90' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 211HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-8: P-LU 2-8 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=5.830 ac Peak Elev=996.74' Storage=0.475 af 19.09 cfs 1.83 cfs 1.83 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 212HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-9: P-LU 2-9 Inflow Area = 11.210 ac, 0.00% Impervious, Inflow Depth = 1.58" for 10y 24hr event Inflow = 29.72 cfs @ 12.10 hrs, Volume= 1.478 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 976.65' @ 24.39 hrs Surf.Area= 1.328 ac Storage= 1.478 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 975.00' 3.430 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 975.00 0.230 0.000 0.000 977.00 1.560 1.790 1.790 978.00 1.720 1.640 3.430 Device Routing Invert Outlet Devices #1 Primary 977.00'8.0" Vert. Orifice/Grate C= 0.580 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=975.00' TW=969.90' (Dynamic Tailwater) 1=Orifice/Grate ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 213HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-9: P-LU 2-9 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=11.210 ac Peak Elev=976.65' Storage=1.478 af 29.72 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 214HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU-2-16: P-LU-2-16 Inflow Area = 2.560 ac, 0.00% Impervious, Inflow Depth = 1.80" for 10y 24hr event Inflow = 9.30 cfs @ 12.07 hrs, Volume= 0.383 af Outflow = 1.29 cfs @ 12.56 hrs, Volume= 0.382 af, Atten= 86%, Lag= 29.7 min Primary = 1.29 cfs @ 12.56 hrs, Volume= 0.382 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 994.07' Surf.Area= 9,913 sf Storage= 902 cf Peak Elev= 994.67' @ 12.56 hrs Surf.Area= 11,822 sf Storage= 8,595 cf (7,693 cf above start) Plug-Flow detention time= 290.8 min calculated for 0.362 af (94% of inflow) Center-of-Mass det. time= 244.1 min ( 1,051.0 - 806.9 ) Volume Invert Avail.Storage Storage Description #1 994.00' 107,634 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 994.00 9,689 0 0 996.00 16,084 25,773 25,773 998.00 20,360 36,444 62,217 1,000.00 25,057 45,417 107,634 Device Routing Invert Outlet Devices #1 Primary 994.07'12.0" Round RCP_Round 12" L= 93.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 994.07' / 987.85' S= 0.0669 '/' Cc= 0.900 n= 0.013, Flow Area= 0.79 sf Primary OutFlow Max=1.29 cfs @ 12.56 hrs HW=994.67' TW=989.00' (Dynamic Tailwater) 1=RCP_Round 12" (Inlet Controls 1.29 cfs @ 2.63 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 215HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU-2-16: P-LU-2-16 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)10 9 8 7 6 5 4 3 2 1 0 Inflow Area=2.560 ac Peak Elev=994.67' Storage=8,595 cf 12.0" Round Culvert n=0.013 L=93.0' S=0.0669 '/' 9.30 cfs 1.29 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 216HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU10-1: P-LU 10-1 Inflow Area = 7.937 ac, 0.00% Impervious, Inflow Depth = 2.07" for 10y 24hr event Inflow = 30.02 cfs @ 12.09 hrs, Volume= 1.372 af Outflow = 3.89 cfs @ 12.61 hrs, Volume= 0.978 af, Atten= 87%, Lag= 31.5 min Primary = 3.89 cfs @ 12.61 hrs, Volume= 0.978 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 964.66' @ 12.61 hrs Surf.Area= 0.233 ac Storage= 0.707 af Plug-Flow detention time= 191.7 min calculated for 0.978 af (71% of inflow) Center-of-Mass det. time= 122.2 min ( 924.3 - 802.1 ) Volume Invert Avail.Storage Storage Description #1 958.00' 1.715 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 958.00 0.020 0.000 0.000 962.00 0.100 0.240 0.240 963.10 0.180 0.154 0.394 964.00 0.200 0.171 0.565 966.00 0.300 0.500 1.065 968.00 0.350 0.650 1.715 Device Routing Invert Outlet Devices #1 Primary 963.10'12.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 966.00'100.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=3.89 cfs @ 12.61 hrs HW=964.66' TW=0.00' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 3.89 cfs @ 4.95 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=958.00' TW=0.00' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 217HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU10-1: P-LU 10-1 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=7.937 ac Peak Elev=964.66' Storage=0.707 af 30.02 cfs 3.89 cfs 3.89 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 218HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W12: Wetland 12 Inflow Area = 0.734 ac, 6.42% Impervious, Inflow Depth = 1.83" for 10y 24hr event Inflow = 2.91 cfs @ 12.05 hrs, Volume= 0.112 af Outflow = 0.04 cfs @ 15.06 hrs, Volume= 0.033 af, Atten= 99%, Lag= 180.8 min Primary = 0.04 cfs @ 15.06 hrs, Volume= 0.033 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 994.12' @ 15.06 hrs Surf.Area= 0.111 ac Storage= 0.092 af Plug-Flow detention time= 724.2 min calculated for 0.033 af (29% of inflow) Center-of-Mass det. time= 626.2 min ( 1,425.0 - 798.8 ) Volume Invert Avail.Storage Storage Description #1 992.50' 0.430 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 992.50 0.002 0.000 0.000 993.00 0.035 0.009 0.009 993.50 0.070 0.026 0.035 994.00 0.104 0.043 0.079 994.50 0.134 0.059 0.138 995.00 0.171 0.076 0.215 995.50 0.210 0.095 0.310 996.00 0.269 0.120 0.430 Device Routing Invert Outlet Devices #1 Primary 994.00'15.0" Round RCP_Round 15" L= 45.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 994.00' / 993.82' S= 0.0040 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf Primary OutFlow Max=0.04 cfs @ 15.06 hrs HW=994.12' TW=968.43' (Dynamic Tailwater) 1=RCP_Round 15" (Barrel Controls 0.04 cfs @ 1.10 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 219HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W12: Wetland 12 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=0.734 ac Peak Elev=994.12' Storage=0.092 af 15.0" Round Culvert n=0.013 L=45.0' S=0.0040 '/' 2.91 cfs 0.04 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 220HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W13: Wetland 13 Inflow Area = 1.729 ac, 6.61% Impervious, Inflow Depth = 1.90" for 10y 24hr event Inflow = 4.89 cfs @ 12.13 hrs, Volume= 0.274 af Outflow = 0.78 cfs @ 12.68 hrs, Volume= 0.147 af, Atten= 84%, Lag= 33.0 min Primary = 0.78 cfs @ 12.68 hrs, Volume= 0.147 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 993.10' @ 12.68 hrs Surf.Area= 11,419 sf Storage= 6,590 cf Plug-Flow detention time= 194.7 min calculated for 0.147 af (54% of inflow) Center-of-Mass det. time= 111.0 min ( 915.0 - 804.1 ) Volume Invert Avail.Storage Storage Description #1 991.50' 22,402 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.50 17 0 0 992.00 648 166 166 993.00 10,069 5,359 5,525 994.00 23,685 16,877 22,402 Device Routing Invert Outlet Devices #1 Primary 993.00'10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=0.78 cfs @ 12.68 hrs HW=993.10' TW=987.31' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.78 cfs @ 0.78 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 221HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W13: Wetland 13 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 Inflow Area=1.729 ac Peak Elev=993.10' Storage=6,590 cf 4.89 cfs 0.78 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 222HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W14: Wetland 14 Inflow Area = 5.397 ac, 16.24% Impervious, Inflow Depth = 1.83" for 10y 24hr event Inflow = 11.13 cfs @ 12.14 hrs, Volume= 0.823 af Outflow = 8.65 cfs @ 12.22 hrs, Volume= 0.790 af, Atten= 22%, Lag= 4.7 min Primary = 8.65 cfs @ 12.22 hrs, Volume= 0.790 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 987.55' @ 12.22 hrs Surf.Area= 8,173 sf Storage= 4,781 cf Plug-Flow detention time= 129.0 min calculated for 0.790 af (96% of inflow) Center-of-Mass det. time= 26.9 min ( 970.5 - 943.6 ) Volume Invert Avail.Storage Storage Description #1 986.00' 27,529 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 986.00 261 0 0 986.50 1,045 327 327 987.00 3,560 1,151 1,478 987.50 8,040 2,900 4,378 988.00 9,380 4,355 8,733 988.50 11,195 5,144 13,877 989.00 13,765 6,240 20,117 989.50 15,884 7,412 27,529 Device Routing Invert Outlet Devices #1 Primary 987.00'8.0' long x 4.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Primary OutFlow Max=8.65 cfs @ 12.22 hrs HW=987.55' TW=985.25' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 8.65 cfs @ 1.97 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 223HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W14: Wetland 14 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=5.397 ac Peak Elev=987.55' Storage=4,781 cf 11.13 cfs 8.65 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 224HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W2: Wetland 2 [86] Warning: Oscillations may require smaller dt (severity=5) Inflow = 83.99 cfs @ 12.13 hrs, Volume= 9.964 af Outflow = 9.70 cfs @ 12.44 hrs, Volume= 9.963 af, Atten= 88%, Lag= 19.1 min Primary = 7.69 cfs @ 13.72 hrs, Volume= 9.583 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Tertiary = 2.16 cfs @ 12.41 hrs, Volume= 0.381 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 969.90' Surf.Area= 2,833 sf Storage= 1,494 cf Peak Elev= 972.07' @ 13.72 hrs Surf.Area= 73,463 sf Storage= 80,511 cf (79,018 cf above start) Plug-Flow detention time= 140.4 min calculated for 9.929 af (100% of inflow) Center-of-Mass det. time= 90.9 min ( 1,942.7 - 1,851.9 ) Volume Invert Avail.Storage Storage Description #1 968.85' 1,052,827 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 968.85 12 0 0 970.00 3,102 1,791 1,791 972.00 70,418 73,520 75,311 974.00 154,658 225,076 300,387 976.00 189,337 343,995 644,382 978.00 219,108 408,445 1,052,827 Device Routing Invert Outlet Devices #1 Primary 967.70'18.0" Round CMP_Round 18" L= 210.0' CMP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 967.70' / 965.96' S= 0.0083 '/' Cc= 0.900 n= 0.025 Corrugated metal, Flow Area= 1.77 sf #2 Device 1 969.90'20.0' long x 5.0' breadth Ditch Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #3 Secondary 979.30'30.0' long x 15.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 #4 Tertiary 968.58'30.0" Round Culvert L= 85.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 968.08' / 968.58' S= -0.0059 '/' Cc= 0.900 n= 0.120, Flow Area= 4.91 sf Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 225HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Primary OutFlow Max=7.69 cfs @ 13.72 hrs HW=972.07' TW=966.90' (Dynamic Tailwater) 1=CMP_Round 18" (Barrel Controls 7.69 cfs @ 4.35 fps) 2=Ditch Berm (Passes 7.69 cfs of 170.13 cfs potential flow) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=969.90' TW=957.00' (Dynamic Tailwater) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Tertiary OutFlow Max=2.15 cfs @ 12.41 hrs HW=971.88' TW=971.68' (Dynamic Tailwater) 4=Culvert (Outlet Controls 2.15 cfs @ 0.44 fps) Pond W2: Wetland 2 Inflow Outflow Primary Secondary Tertiary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Peak Elev=972.07' Storage=80,511 cf 83.99 cfs 9.70 cfs 7.69 cfs 0.00 cfs 2.16 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 226HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W6: Wetland 6 Inflow Area = 1.668 ac, 12.44% Impervious, Inflow Depth = 1.71" for 10y 24hr event Inflow = 4.46 cfs @ 12.12 hrs, Volume= 0.238 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,000.92' @ 24.40 hrs Surf.Area= 9,689 sf Storage= 10,355 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 999.00' 16,680 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 999.00 2,453 0 0 999.50 3,157 1,403 1,403 1,000.00 5,185 2,086 3,488 1,000.50 7,715 3,225 6,713 1,001.00 10,073 4,447 11,160 1,001.50 12,007 5,520 16,680 Device Routing Invert Outlet Devices #1 Primary 1,001.00'50.0' long x 25.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=999.00' TW=998.70' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr10y_S1 10y 24hr Rainfall=4.27"BluffsLL_ExistingConditions Printed 9/23/2020Prepared by AE2S Page 227HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W6: Wetland 6 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 Inflow Area=1.668 ac Peak Elev=1,000.92' Storage=10,355 cf 4.46 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 228HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Time span=0.00-250.00 hrs, dt=0.002 hrs, 125001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Sim-Route method - Pond routing by Sim-Route method Runoff Area=38.561 ac 45.60% Impervious Runoff Depth=5.65"Subcatchment 300S: 300 Flow Length=1,575' Slope=0.0350 '/' Tc=20.7 min CN=WQ Runoff=201.02 cfs 18.157 af Runoff Area=5.606 ac 29.33% Impervious Runoff Depth=5.11"Subcatchment 301S: 301 Flow Length=275' Slope=0.1030 '/' Tc=3.5 min CN=WQ Runoff=52.11 cfs 2.387 af Runoff Area=2.200 ac 77.27% Impervious Runoff Depth=6.54"Subcatchment 400S: Proposed CR 117 Tc=20.0 min CN=WQ Runoff=13.07 cfs 1.199 af Runoff Area=2.600 ac 17.79% Impervious Runoff Depth=4.74"Subcatchment 401S: 401 Flow Length=500' Slope=0.0500 '/' Tc=8.9 min CN=WQ Runoff=17.46 cfs 1.027 af Runoff Area=1.766 ac 29.44% Impervious Runoff Depth=5.20"Subcatchment 500S: 500 Flow Length=510' Slope=0.0400 '/' Tc=9.0 min CN=WQ Runoff=12.73 cfs 0.765 af Runoff Area=0.529 ac 14.88% Impervious Runoff Depth=4.62"Subcatchment 600S: 600 Flow Length=495' Slope=0.0400 '/' Tc=10.2 min CN=WQ Runoff=3.29 cfs 0.204 af Runoff Area=8.313 ac 0.56% Impervious Runoff Depth=4.09"Subcatchment 700S: 700 Flow Length=500' Slope=0.0900 '/' Tc=7.9 min CN=WQ Runoff=52.51 cfs 2.836 af Runoff Area=0.636 ac 16.77% Impervious Runoff Depth=4.67"Subcatchment 701S: 701 Flow Length=255' Slope=0.0400 '/' Tc=6.0 min CN=WQ Runoff=4.87 cfs 0.247 af Runoff Area=1.094 ac 15.23% Impervious Runoff Depth=4.68"Subcatchment 800S: 800 Flow Length=355' Slope=0.0400 '/' Tc=7.8 min CN=WQ Runoff=7.70 cfs 0.426 af Runoff Area=1.215 ac 34.66% Impervious Runoff Depth=5.36"Subcatchment 900S: 900 Flow Length=470' Slope=0.0300 '/' Tc=9.4 min CN=WQ Runoff=8.79 cfs 0.543 af Runoff Area=0.517 ac 0.00% Impervious Runoff Depth=4.18"Subcatchment AS: A Flow Length=250' Slope=0.0480 '/' Tc=6.0 min CN=WQ Runoff=3.67 cfs 0.180 af Runoff Area=0.520 ac 0.00% Impervious Runoff Depth=4.96"Subcatchment BLL_EX112: BLL_EX112 Tc=15.0 min CN=79 Runoff=2.96 cfs 0.215 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=3.96"Subcatchment BLL_EX113: BLL_EX113 Flow Length=180' Slope=0.0830 '/' Tc=20.5 min CN=70 Runoff=0.12 cfs 0.010 af Runoff Area=0.310 ac 0.00% Impervious Runoff Depth=4.96"Subcatchment BLL_EX206: BLL_EX206 Tc=15.0 min CN=79 Runoff=1.77 cfs 0.128 af Runoff Area=0.230 ac 0.00% Impervious Runoff Depth=4.96"Subcatchment BLL_EX303: BLL_EX303 Flow Length=800' Tc=46.2 min CN=79 Runoff=0.74 cfs 0.095 af Runoff Area=2.850 ac 16.84% Impervious Runoff Depth=4.81"Subcatchment BLL_EX304: BLL_EX304 Flow Length=300' Slope=0.1660 '/' Tc=9.5 min CN=WQ Runoff=18.94 cfs 1.143 af Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 229HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=0.310 ac 67.74% Impervious Runoff Depth=6.28"Subcatchment BLL_EX501: BLL_EX501 Tc=15.0 min CN=WQ Runoff=2.03 cfs 0.162 af Runoff Area=0.270 ac 62.96% Impervious Runoff Depth=6.15"Subcatchment BLL_EX502: BLL_EX502 Tc=15.0 min CN=WQ Runoff=1.74 cfs 0.138 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=4.40"Subcatchment BLL_EX503: BLL_EX503 Tc=15.0 min CN=74 Runoff=0.15 cfs 0.011 af Runoff Area=1.030 ac 15.53% Impervious Runoff Depth=4.83"Subcatchment BLL_EX504: BLL_EX504 Tc=15.0 min CN=WQ Runoff=5.59 cfs 0.415 af Runoff Area=7.420 ac 0.00% Impervious Runoff Depth=4.85"Subcatchment LU 10-1: LU 10-1 Tc=6.0 min CN=78 Runoff=60.73 cfs 2.998 af Runoff Area=79.621 ac 0.00% Impervious Runoff Depth=4.62"Subcatchment LU 2-1: LU 2-1 Tc=52.0 min CN=76 Runoff=223.31 cfs 30.682 af Runoff Area=9.880 ac 0.00% Impervious Runoff Depth=4.29"Subcatchment LU 2-10: LU 2-10 Tc=6.0 min CN=73 Runoff=72.06 cfs 3.533 af Runoff Area=21.970 ac 0.00% Impervious Runoff Depth=4.51"Subcatchment LU 2-11: LU 2-11 Tc=12.0 min CN=75 Runoff=127.44 cfs 8.262 af Runoff Area=9.720 ac 0.00% Impervious Runoff Depth=4.18"Subcatchment LU 2-12: LU 2-12 Tc=6.0 min CN=72 Runoff=69.09 cfs 3.386 af Runoff Area=15.390 ac 0.00% Impervious Runoff Depth=4.18"Subcatchment LU 2-13: LU 2-13 Tc=7.0 min CN=72 Runoff=103.72 cfs 5.362 af Runoff Area=25.920 ac 0.00% Impervious Runoff Depth=4.07"Subcatchment LU 2-14: LU 2-14 Tc=12.0 min CN=71 Runoff=135.63 cfs 8.793 af Runoff Area=4.310 ac 0.00% Impervious Runoff Depth=4.18"Subcatchment LU 2-15: LU 2-15 Tc=4.0 min CN=72 Runoff=34.06 cfs 1.502 af Runoff Area=2.560 ac 0.00% Impervious Runoff Depth=4.40"Subcatchment LU 2-16: LU 2-16 Tc=4.0 min CN=74 Runoff=21.26 cfs 0.939 af Runoff Area=8.180 ac 0.00% Impervious Runoff Depth=4.74"Subcatchment LU 2-18: LU 2-18 Tc=7.0 min CN=77 Runoff=62.21 cfs 3.228 af Runoff Area=11.910 ac 0.00% Impervious Runoff Depth=4.40"Subcatchment LU 2-2: LU 2-2 Tc=7.0 min CN=74 Runoff=84.46 cfs 4.369 af Runoff Area=47.530 ac 0.00% Impervious Runoff Depth=4.29"Subcatchment LU 2-3: LU 2-3 Tc=17.0 min CN=73 Runoff=222.49 cfs 16.996 af Runoff Area=12.300 ac 0.00% Impervious Runoff Depth=4.96"Subcatchment LU 2-4: LU 2-4 Tc=8.0 min CN=79 Runoff=92.56 cfs 5.085 af Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 230HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=9.150 ac 0.00% Impervious Runoff Depth=4.85"Subcatchment LU 2-5: LU 2-5 Tc=7.0 min CN=78 Runoff=71.12 cfs 3.697 af Runoff Area=8.904 ac 0.00% Impervious Runoff Depth=4.74"Subcatchment LU 2-7: LU 2-7 Tc=7.0 min CN=77 Runoff=67.72 cfs 3.514 af Runoff Area=5.830 ac 0.00% Impervious Runoff Depth=4.29"Subcatchment LU 2-8: LU 2-8 Tc=5.0 min CN=73 Runoff=44.80 cfs 2.085 af Runoff Area=11.210 ac 0.00% Impervious Runoff Depth=4.07"Subcatchment LU 2-9: LU 2-9 Tc=7.0 min CN=71 Runoff=73.55 cfs 3.803 af Runoff Area=5.464 ac 5.19% Impervious Runoff Depth=4.42"Subcatchment W11S: W11 Flow Length=650' Slope=0.0380 '/' Tc=13.8 min CN=WQ Runoff=28.88 cfs 2.011 af Runoff Area=0.734 ac 6.42% Impervious Runoff Depth=4.41"Subcatchment W12S: W12 Flow Length=130' Slope=0.1200 '/' Tc=2.1 min CN=WQ Runoff=6.50 cfs 0.269 af Runoff Area=1.729 ac 6.61% Impervious Runoff Depth=4.52"Subcatchment W13S: W13 Flow Length=715' Slope=0.0900 '/' Tc=9.4 min CN=WQ Runoff=11.05 cfs 0.651 af Runoff Area=2.452 ac 13.89% Impervious Runoff Depth=4.67"Subcatchment W14S: W14 Flow Length=715' Slope=0.0900 '/' Tc=9.1 min CN=WQ Runoff=16.19 cfs 0.954 af Runoff Area=21.327 ac 0.14% Impervious Runoff Depth=4.02"Subcatchment W1nS: W1n Flow Length=1,350' Slope=0.1200 '/' Tc=15.1 min CN=WQ Runoff=99.15 cfs 7.153 af Runoff Area=3.189 ac 3.48% Impervious Runoff Depth=4.12"Subcatchment W2S: W2 Flow Length=725' Slope=0.0690 '/' Tc=12.1 min CN=WQ Runoff=16.74 cfs 1.095 af Runoff Area=0.575 ac 7.12% Impervious Runoff Depth=4.37"Subcatchment W6S: W6 Flow Length=200' Slope=0.0800 '/' Tc=3.7 min CN=WQ Runoff=4.73 cfs 0.209 af Runoff Area=5.297 ac 0.00% Impervious Runoff Depth=3.98"Subcatchment WLS: WL Flow Length=300' Slope=0.2500 '/' Tc=3.2 min CN=WQ Runoff=41.45 cfs 1.757 af Avg. Flow Depth=1.02' Max Vel=5.09 fps Inflow=8.94 cfs 38.264 afReach Pipe from W2 to W1: Pipe from 27.0" Round Pipe n=0.025 L=65.8' S=0.0172 '/' Capacity=21.10 cfs Outflow=8.94 cfs 38.263 af Peak Elev=970.12' Storage=738,528 cf Inflow=239.81 cfs 22.722 afPond 300P: Pond with IESF Primary=66.79 cfs 18.289 af Secondary=37.29 cfs 4.433 af Outflow=104.08 cfs 22.722 af Peak Elev=986.31' Storage=78,514 cf Inflow=26.67 cfs 2.226 afPond 400P: County pond with IESF Outflow=8.11 cfs 2.226 af Peak Elev=973.73' Storage=9.770 af Inflow=131.50 cfs 29.234 afPond 404P: P-LU 2-2 Primary=7.32 cfs 29.233 af Secondary=0.14 cfs 0.001 af Outflow=7.32 cfs 29.234 af Peak Elev=985.82' Inflow=22.94 cfs 1.988 afPond 490: CB inlet Primary=10.32 cfs 1.596 af Secondary=12.62 cfs 0.392 af Outflow=22.94 cfs 1.988 af Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 231HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=982.81' Inflow=12.62 cfs 0.392 afPond 491P: CB inlet Outflow=12.62 cfs 0.392 af Peak Elev=985.50' Storage=3,363 cf Inflow=12.73 cfs 0.765 afPond 500P: IESF Outflow=12.68 cfs 0.765 af Peak Elev=999.88' Storage=1,987 cf Inflow=5.88 cfs 0.547 afPond 600P: rain garden Discarded=0.01 cfs 0.076 af Primary=5.72 cfs 0.506 af Outflow=5.72 cfs 0.582 af Peak Elev=1,001.94' Storage=1,885 cf Inflow=7.70 cfs 0.426 afPond 800P: rain garden Discarded=0.01 cfs 0.036 af Primary=7.38 cfs 0.390 af Outflow=7.39 cfs 0.426 af Peak Elev=992.47' Storage=3,442 cf Inflow=8.79 cfs 0.543 afPond 900P: IESF Outflow=8.31 cfs 0.543 af Peak Elev=989.47' Inflow=11.78 cfs 4.452 afPond CB-9: EX CB-9 24.0" Round Culvert n=0.025 L=94.0' S=0.0755 '/' Outflow=11.78 cfs 4.452 af Inflow=191.92 cfs 140.589 afPond LUCY: LAKE LUCY Primary=191.92 cfs 140.589 af Peak Elev=958.86' Storage=1,183,339 cf Inflow=407.85 cfs 109.474 afPond P-LU 2-1: P-LU 2-1 Outflow=186.14 cfs 137.805 af Peak Elev=977.70' Storage=1.189 af Inflow=72.06 cfs 3.533 afPond P-LU 2-10: P-LU 2-10 Outflow=18.74 cfs 3.368 af Peak Elev=974.34' Storage=21.214 af Inflow=292.61 cfs 24.272 afPond P-LU 2-11: P-LU 2-11 15.0" Round Culvert n=0.011 L=114.0' S=0.0004 '/' Outflow=4.21 cfs 17.241 af Peak Elev=980.08' Storage=1.744 af Inflow=69.09 cfs 3.386 afPond P-LU 2-12: P-LU 2-12 Primary=9.81 cfs 2.284 af Secondary=5.90 cfs 0.082 af Outflow=15.71 cfs 2.366 af Peak Elev=993.90' Storage=2.111 af Inflow=103.72 cfs 5.362 afPond P-LU 2-13: P-LU 2-13 24.0" Round Culvert n=0.011 L=110.0' S=0.0600 '/' Outflow=27.50 cfs 4.850 af Peak Elev=993.92' Storage=18.720 af Inflow=240.02 cfs 18.720 afPond P-LU 2-3: P-LU 2-3 (LAKE Outflow=0.00 cfs 0.000 af Peak Elev=976.05' Storage=0.669 af Inflow=99.88 cfs 5.811 afPond P-LU 2-4: P-LU 2-4 Primary=12.53 cfs 2.508 af Secondary=84.49 cfs 2.984 af Outflow=97.03 cfs 5.491 af Peak Elev=967.53' Storage=2.056 af Inflow=71.12 cfs 3.697 afPond P-LU 2-5: P-LU 2-5 Outflow=15.79 cfs 3.716 af Peak Elev=982.43' Storage=411,780 cf Inflow=56.66 cfs 9.453 afPond P-LU 2-6: Wetland 11 15.0" Round Culvert n=0.013 L=50.0' S=0.0104 '/' Outflow=0.00 cfs 0.000 af Peak Elev=1,000.79' Storage=93,196 cf Inflow=67.72 cfs 3.514 afPond P-LU 2-7: P-LU 2-7 12.0" Round Culvert n=0.013 L=60.8' S=0.0197 '/' Outflow=8.16 cfs 3.514 af Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 232HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=997.28' Storage=0.572 af Inflow=44.80 cfs 2.085 afPond P-LU 2-8: P-LU 2-8 Primary=3.34 cfs 0.931 af Secondary=40.08 cfs 0.793 af Outflow=43.42 cfs 1.724 af Peak Elev=977.89' Storage=3.242 af Inflow=73.55 cfs 3.803 afPond P-LU 2-9: P-LU 2-9 Outflow=1.21 cfs 1.973 af Peak Elev=995.51' Storage=19,443 cf Inflow=21.26 cfs 0.939 afPond P-LU-2-16: P-LU-2-16 12.0" Round Culvert n=0.013 L=93.0' S=0.0669 '/' Outflow=3.66 cfs 0.938 af Peak Elev=966.29' Storage=1.153 af Inflow=64.40 cfs 3.178 afPond P-LU10-1: P-LU 10-1 Primary=6.20 cfs 2.023 af Secondary=39.27 cfs 0.760 af Outflow=45.47 cfs 2.784 af Peak Elev=994.55' Storage=0.145 af Inflow=6.50 cfs 0.269 afPond W12: Wetland 12 15.0" Round Culvert n=0.013 L=45.0' S=0.0040 '/' Outflow=0.96 cfs 0.190 af Peak Elev=993.38' Storage=10,269 cf Inflow=11.05 cfs 0.651 afPond W13: Wetland 13 Outflow=5.88 cfs 0.525 af Peak Elev=988.05' Storage=9,194 cf Inflow=27.66 cfs 2.022 afPond W14: Wetland 14 Outflow=22.94 cfs 1.988 af Peak Elev=973.70' Storage=255,343 cf Inflow=169.86 cfs 39.047 afPond W2: Wetland 2 Primary=8.94 cfs 38.264 af Secondary=0.00 cfs 0.000 af Tertiary=4.17 cfs 0.783 af Outflow=12.91 cfs 39.047 af Peak Elev=1,001.10' Storage=12,189 cf Inflow=10.31 cfs 0.600 afPond W6: Wetland 6 Outflow=4.25 cfs 0.344 af Total Runoff Area = 401.189 ac Runoff Volume = 152.622 af Average Runoff Depth = 4.57" 93.84% Pervious = 376.470 ac 6.16% Impervious = 24.719 ac Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 233HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 300S: 300 Runoff = 201.02 cfs @ 12.26 hrs, Volume= 18.157 af, Depth= 5.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.755 70 Woods Good, HSG C * 0.637 71 Meadow, HSG C * 19.586 74 75% Grass cover Good, HSG C * 17.584 98 Impervious, HSG C 38.561 Weighted Average 20.977 54.40% Pervious Area 17.584 45.60% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.7 1,575 0.0350 1.27 Lag/CN Method, Subcatchment 300S: 300 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)220 210 200 190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=38.561 ac Runoff Volume=18.157 af Runoff Depth=5.65" Flow Length=1,575' Slope=0.0350 '/' Tc=20.7 min CN=WQ 201.02 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 234HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 301S: 301 Runoff = 52.11 cfs @ 12.06 hrs, Volume= 2.387 af, Depth= 5.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.991 98 Water Surface, HSG C * 1.761 71 Meadow, HSG C * 2.200 74 75% Grass cover Good, HSG C * 0.654 98 Impervious, HSG C 5.606 Weighted Average 3.961 70.67% Pervious Area 1.644 29.33% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.5 275 0.1030 1.30 Lag/CN Method, Subcatchment 301S: 301 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=5.606 ac Runoff Volume=2.387 af Runoff Depth=5.11" Flow Length=275' Slope=0.1030 '/' Tc=3.5 min CN=WQ 52.11 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 235HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 400S: Proposed CR 117 Runoff = 13.07 cfs @ 12.25 hrs, Volume= 1.199 af, Depth= 6.54" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description 1.700 98 Paved roads w/curbs & sewers, HSG C 0.500 74 >75% Grass cover, Good, HSG C 2.200 Weighted Average 0.500 22.73% Pervious Area 1.700 77.27% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.0 Direct Entry, Subcatchment 400S: Proposed CR 117 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=2.200 ac Runoff Volume=1.199 af Runoff Depth=6.54" Tc=20.0 min CN=WQ 13.07 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 236HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 401S: 401 Runoff = 17.46 cfs @ 12.12 hrs, Volume= 1.027 af, Depth= 4.74" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.243 70 Woods Good, HSG C * 0.186 98 Water Surface, HSG C * 0.897 71 Meadow, HSG C * 0.997 74 75% Grass cover Good, HSG C * 0.276 98 Impervious, HSG C 2.600 Weighted Average 2.138 82.21% Pervious Area 0.462 17.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.9 500 0.0500 0.93 Lag/CN Method, Subcatchment 401S: 401 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=2.600 ac Runoff Volume=1.027 af Runoff Depth=4.74" Flow Length=500' Slope=0.0500 '/' Tc=8.9 min CN=WQ 17.46 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 237HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 500S: 500 Runoff = 12.73 cfs @ 12.12 hrs, Volume= 0.765 af, Depth= 5.20" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.097 71 Meadow, HSG C * 1.149 74 75% Grass cover Good, HSG C * 0.520 98 Impervious, HSG C 1.766 Weighted Average 1.246 70.56% Pervious Area 0.520 29.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.0 510 0.0400 0.95 Lag/CN Method, Subcatchment 500S: 500 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=1.766 ac Runoff Volume=0.765 af Runoff Depth=5.20" Flow Length=510' Slope=0.0400 '/' Tc=9.0 min CN=WQ 12.73 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 238HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 600S: 600 Runoff = 3.29 cfs @ 12.14 hrs, Volume= 0.204 af, Depth= 4.62" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.066 70 Woods Good, HSG C * 0.221 71 Meadow, HSG C * 0.163 74 75% Grass cover Good, HSG C * 0.079 98 Impervious, HSG C 0.529 Weighted Average 0.450 85.12% Pervious Area 0.079 14.88% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.2 495 0.0400 0.81 Lag/CN Method, Subcatchment 600S: 600 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.529 ac Runoff Volume=0.204 af Runoff Depth=4.62" Flow Length=495' Slope=0.0400 '/' Tc=10.2 min CN=WQ 3.29 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 239HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 700S: 700 Runoff = 52.51 cfs @ 12.11 hrs, Volume= 2.836 af, Depth= 4.09" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 2.897 70 Woods Good, HSG C * 4.268 71 Meadow, HSG C * 1.101 74 75% Grass cover Good, HSG C * 0.047 98 Impervious, HSG C 8.313 Weighted Average 8.266 99.44% Pervious Area 0.047 0.56% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.9 500 0.0900 1.05 Lag/CN Method, Subcatchment 700S: 700 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=8.313 ac Runoff Volume=2.836 af Runoff Depth=4.09" Flow Length=500' Slope=0.0900 '/' Tc=7.9 min CN=WQ 52.51 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 240HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 701S: 701 Runoff = 4.87 cfs @ 12.09 hrs, Volume= 0.247 af, Depth= 4.67" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.380 71 Meadow, HSG C * 0.149 74 75% Grass cover Good, HSG C * 0.107 98 Impervious, HSG C 0.636 Weighted Average 0.529 83.23% Pervious Area 0.107 16.77% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 255 0.0400 0.71 Lag/CN Method, Subcatchment 701S: 701 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.636 ac Runoff Volume=0.247 af Runoff Depth=4.67" Flow Length=255' Slope=0.0400 '/' Tc=6.0 min CN=WQ 4.87 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 241HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 800S: 800 Runoff = 7.70 cfs @ 12.11 hrs, Volume= 0.426 af, Depth= 4.68" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.484 71 Meadow, HSG C * 0.443 74 75% Grass cover Good, HSG C * 0.167 98 Impervious, HSG C 1.094 Weighted Average 0.927 84.77% Pervious Area 0.167 15.23% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.8 355 0.0400 0.76 Lag/CN Method, Subcatchment 800S: 800 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=1.094 ac Runoff Volume=0.426 af Runoff Depth=4.68" Flow Length=355' Slope=0.0400 '/' Tc=7.8 min CN=WQ 7.70 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 242HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 900S: 900 Runoff = 8.79 cfs @ 12.13 hrs, Volume= 0.543 af, Depth= 5.36" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.000 70 Woods Good, HSG C * 0.794 74 75% Grass cover Good, HSG C * 0.421 98 Impervious, HSG C 1.215 Weighted Average 0.794 65.34% Pervious Area 0.421 34.66% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 470 0.0300 0.83 Lag/CN Method, Subcatchment 900S: 900 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=1.215 ac Runoff Volume=0.543 af Runoff Depth=5.36" Flow Length=470' Slope=0.0300 '/' Tc=9.4 min CN=WQ 8.79 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 243HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment AS: A Runoff = 3.67 cfs @ 12.09 hrs, Volume= 0.180 af, Depth= 4.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.262 70 Woods, Good, HSG C * 0.255 74 75% Grass cover Good, HSG C 0.517 Weighted Average 0.517 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 250 0.0480 0.69 Lag/CN Method, Subcatchment AS: A Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.517 ac Runoff Volume=0.180 af Runoff Depth=4.18" Flow Length=250' Slope=0.0480 '/' Tc=6.0 min CN=WQ 3.67 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 244HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX112: BLL_EX112 Runoff = 2.96 cfs @ 12.20 hrs, Volume= 0.215 af, Depth= 4.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.520 79 CN from Previous Model 0.520 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX112: BLL_EX112 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.520 ac Runoff Volume=0.215 af Runoff Depth=4.96" Tc=15.0 min CN=79 2.96 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 245HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX113: BLL_EX113 Runoff = 0.12 cfs @ 12.28 hrs, Volume= 0.010 af, Depth= 3.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description 0.030 70 Woods, Good, HSG C 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.5 180 0.0830 0.15 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_EX113: BLL_EX113 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.13 0.125 0.12 0.115 0.11 0.105 0.1 0.095 0.09 0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.030 ac Runoff Volume=0.010 af Runoff Depth=3.96" Flow Length=180' Slope=0.0830 '/' Tc=20.5 min CN=70 0.12 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 246HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX206: BLL_EX206 Runoff = 1.77 cfs @ 12.20 hrs, Volume= 0.128 af, Depth= 4.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.310 79 CN from Previous Model 0.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX206: BLL_EX206 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.310 ac Runoff Volume=0.128 af Runoff Depth=4.96" Tc=15.0 min CN=79 1.77 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 247HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX303: BLL_EX303 Runoff = 0.74 cfs @ 12.63 hrs, Volume= 0.095 af, Depth= 4.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.230 79 CN from Previous Model 0.230 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 41.4 300 0.0400 0.12 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" 4.8 500 0.1190 1.72 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 46.2 800 Total Subcatchment BLL_EX303: BLL_EX303 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.230 ac Runoff Volume=0.095 af Runoff Depth=4.96" Flow Length=800' Tc=46.2 min CN=79 0.74 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 248HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX304: BLL_EX304 Runoff = 18.94 cfs @ 12.13 hrs, Volume= 1.143 af, Depth= 4.81" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.080 98 Existing County Road * 0.400 98 Existing homes * 2.000 74 Existing lawn 0.370 70 Woods, Good, HSG C 2.850 Weighted Average 2.370 83.16% Pervious Area 0.480 16.84% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.5 300 0.1660 0.52 Sheet Flow, Range n= 0.130 P2= 2.87" Subcatchment BLL_EX304: BLL_EX304 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=2.850 ac Runoff Volume=1.143 af Runoff Depth=4.81" Flow Length=300' Slope=0.1660 '/' Tc=9.5 min CN=WQ 18.94 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 249HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX501: BLL_EX501 Runoff = 2.03 cfs @ 12.20 hrs, Volume= 0.162 af, Depth= 6.28" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.100 74 Existing lawn * 0.210 98 Existing road and sidewalk 0.310 Weighted Average 0.100 32.26% Pervious Area 0.210 67.74% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX501: BLL_EX501 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.310 ac Runoff Volume=0.162 af Runoff Depth=6.28" Tc=15.0 min CN=WQ 2.03 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 250HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX502: BLL_EX502 Runoff = 1.74 cfs @ 12.20 hrs, Volume= 0.138 af, Depth= 6.15" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.100 74 Existing lawn * 0.170 98 Existing road and sidewalk 0.270 Weighted Average 0.100 37.04% Pervious Area 0.170 62.96% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX502: BLL_EX502 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.270 ac Runoff Volume=0.138 af Runoff Depth=6.15" Tc=15.0 min CN=WQ 1.74 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 251HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX503: BLL_EX503 Runoff = 0.15 cfs @ 12.20 hrs, Volume= 0.011 af, Depth= 4.40" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.030 74 Existing lawn 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX503: BLL_EX503 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.030 ac Runoff Volume=0.011 af Runoff Depth=4.40" Tc=15.0 min CN=74 0.15 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 252HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX504: BLL_EX504 Runoff = 5.59 cfs @ 12.20 hrs, Volume= 0.415 af, Depth= 4.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.160 98 Existing homes * 0.870 74 Existing lawn 1.030 Weighted Average 0.870 84.47% Pervious Area 0.160 15.53% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX504: BLL_EX504 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=1.030 ac Runoff Volume=0.415 af Runoff Depth=4.83" Tc=15.0 min CN=WQ 5.59 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 253HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 10-1: LU 10-1 Runoff = 60.73 cfs @ 12.09 hrs, Volume= 2.998 af, Depth= 4.85" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 7.420 78 7.420 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 10-1: LU 10-1 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=7.420 ac Runoff Volume=2.998 af Runoff Depth=4.85" Tc=6.0 min CN=78 60.73 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 254HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-1: LU 2-1 Runoff = 223.31 cfs @ 12.71 hrs, Volume= 30.682 af, Depth= 4.62" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 79.621 76 79.621 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 52.0 Direct Entry, Subcatchment LU 2-1: LU 2-1 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)250 240 230 220 210 200 190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=79.621 ac Runoff Volume=30.682 af Runoff Depth=4.62" Tc=52.0 min CN=76 223.31 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 255HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-10: LU 2-10 Runoff = 72.06 cfs @ 12.09 hrs, Volume= 3.533 af, Depth= 4.29" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 9.880 73 9.880 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 2-10: LU 2-10 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=9.880 ac Runoff Volume=3.533 af Runoff Depth=4.29" Tc=6.0 min CN=73 72.06 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 256HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-11: LU 2-11 Runoff = 127.44 cfs @ 12.16 hrs, Volume= 8.262 af, Depth= 4.51" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 21.970 75 21.970 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment LU 2-11: LU 2-11 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=21.970 ac Runoff Volume=8.262 af Runoff Depth=4.51" Tc=12.0 min CN=75 127.44 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 257HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-12: LU 2-12 Runoff = 69.09 cfs @ 12.09 hrs, Volume= 3.386 af, Depth= 4.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 9.720 72 9.720 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 2-12: LU 2-12 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=9.720 ac Runoff Volume=3.386 af Runoff Depth=4.18" Tc=6.0 min CN=72 69.09 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 258HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-13: LU 2-13 Runoff = 103.72 cfs @ 12.10 hrs, Volume= 5.362 af, Depth= 4.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 15.390 72 15.390 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-13: LU 2-13 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)115 110 105 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=15.390 ac Runoff Volume=5.362 af Runoff Depth=4.18" Tc=7.0 min CN=72 103.72 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 259HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-14: LU 2-14 Runoff = 135.63 cfs @ 12.16 hrs, Volume= 8.793 af, Depth= 4.07" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 25.920 71 25.920 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment LU 2-14: LU 2-14 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=25.920 ac Runoff Volume=8.793 af Runoff Depth=4.07" Tc=12.0 min CN=71 135.63 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 260HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-15: LU 2-15 Runoff = 34.06 cfs @ 12.07 hrs, Volume= 1.502 af, Depth= 4.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 4.310 72 4.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Subcatchment LU 2-15: LU 2-15 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=4.310 ac Runoff Volume=1.502 af Runoff Depth=4.18" Tc=4.0 min CN=72 34.06 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 261HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-16: LU 2-16 Runoff = 21.26 cfs @ 12.07 hrs, Volume= 0.939 af, Depth= 4.40" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 2.560 74 2.560 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Subcatchment LU 2-16: LU 2-16 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=2.560 ac Runoff Volume=0.939 af Runoff Depth=4.40" Tc=4.0 min CN=74 21.26 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 262HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-18: LU 2-18 Runoff = 62.21 cfs @ 12.10 hrs, Volume= 3.228 af, Depth= 4.74" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 8.180 77 8.180 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-18: LU 2-18 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=8.180 ac Runoff Volume=3.228 af Runoff Depth=4.74" Tc=7.0 min CN=77 62.21 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 263HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-2: LU 2-2 Runoff = 84.46 cfs @ 12.10 hrs, Volume= 4.369 af, Depth= 4.40" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 11.910 74 11.910 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-2: LU 2-2 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=11.910 ac Runoff Volume=4.369 af Runoff Depth=4.40" Tc=7.0 min CN=74 84.46 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 264HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-3: LU 2-3 Runoff = 222.49 cfs @ 12.22 hrs, Volume= 16.996 af, Depth= 4.29" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 47.530 73 47.530 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 17.0 Direct Entry, Subcatchment LU 2-3: LU 2-3 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)240 230 220 210 200 190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=47.530 ac Runoff Volume=16.996 af Runoff Depth=4.29" Tc=17.0 min CN=73 222.49 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 265HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-4: LU 2-4 Runoff = 92.56 cfs @ 12.11 hrs, Volume= 5.085 af, Depth= 4.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 12.300 79 12.300 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment LU 2-4: LU 2-4 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=12.300 ac Runoff Volume=5.085 af Runoff Depth=4.96" Tc=8.0 min CN=79 92.56 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 266HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-5: LU 2-5 Runoff = 71.12 cfs @ 12.10 hrs, Volume= 3.697 af, Depth= 4.85" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 9.150 78 9.150 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-5: LU 2-5 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=9.150 ac Runoff Volume=3.697 af Runoff Depth=4.85" Tc=7.0 min CN=78 71.12 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 267HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-7: LU 2-7 Runoff = 67.72 cfs @ 12.10 hrs, Volume= 3.514 af, Depth= 4.74" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 8.904 77 8.904 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-7: LU 2-7 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=8.904 ac Runoff Volume=3.514 af Runoff Depth=4.74" Tc=7.0 min CN=77 67.72 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 268HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-8: LU 2-8 Runoff = 44.80 cfs @ 12.07 hrs, Volume= 2.085 af, Depth= 4.29" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 5.830 73 5.830 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment LU 2-8: LU 2-8 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)50 48 46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=5.830 ac Runoff Volume=2.085 af Runoff Depth=4.29" Tc=5.0 min CN=73 44.80 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 269HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-9: LU 2-9 Runoff = 73.55 cfs @ 12.10 hrs, Volume= 3.803 af, Depth= 4.07" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 11.210 71 11.210 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-9: LU 2-9 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=11.210 ac Runoff Volume=3.803 af Runoff Depth=4.07" Tc=7.0 min CN=71 73.55 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 270HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W11S: W11 Runoff = 28.88 cfs @ 12.19 hrs, Volume= 2.011 af, Depth= 4.42" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 2.746 74 Wetland, HSG C * 0.481 70 Woods Good, HSG C * 1.503 71 Meadow, HSG C * 0.452 74 75% Grass cover Good, HSG C * 0.284 98 Impervious, HSG C 5.464 Weighted Average 5.181 94.81% Pervious Area 0.284 5.19% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.8 650 0.0380 0.79 Lag/CN Method, Subcatchment W11S: W11 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=5.464 ac Runoff Volume=2.011 af Runoff Depth=4.42" Flow Length=650' Slope=0.0380 '/' Tc=13.8 min CN=WQ 28.88 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 271HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W12S: W12 Runoff = 6.50 cfs @ 12.05 hrs, Volume= 0.269 af, Depth= 4.41" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.081 74 Wetland, HSG C * 0.290 70 Woods Good, HSG C * 0.316 74 75% Grass cover Good, HSG C * 0.047 98 Impervious, HSG C 0.734 Weighted Average 0.687 93.58% Pervious Area 0.047 6.42% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.1 130 0.1200 1.01 Lag/CN Method, Subcatchment W12S: W12 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.734 ac Runoff Volume=0.269 af Runoff Depth=4.41" Flow Length=130' Slope=0.1200 '/' Tc=2.1 min CN=WQ 6.50 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 272HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W13S: W13 Runoff = 11.05 cfs @ 12.13 hrs, Volume= 0.651 af, Depth= 4.52" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.038 74 Wetland, HSG C * 0.252 70 Woods Good, HSG C * 1.325 74 75% Grass cover Good, HSG C * 0.114 98 Impervious, HSG C 1.729 Weighted Average 1.615 93.39% Pervious Area 0.114 6.61% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 715 0.0900 1.27 Lag/CN Method, Subcatchment W13S: W13 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=1.729 ac Runoff Volume=0.651 af Runoff Depth=4.52" Flow Length=715' Slope=0.0900 '/' Tc=9.4 min CN=WQ 11.05 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 273HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W14S: W14 Runoff = 16.19 cfs @ 12.12 hrs, Volume= 0.954 af, Depth= 4.67" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.084 74 Wetland, HSG C * 0.638 70 Woods Good, HSG C * 0.014 71 Meadow, HSG C * 1.375 74 75% Grass cover Good, HSG C * 0.341 98 Impervious, HSG C 2.452 Weighted Average 2.112 86.11% Pervious Area 0.341 13.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.1 715 0.0900 1.30 Lag/CN Method, Subcatchment W14S: W14 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=2.452 ac Runoff Volume=0.954 af Runoff Depth=4.67" Flow Length=715' Slope=0.0900 '/' Tc=9.1 min CN=WQ 16.19 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 274HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W1nS: W1n Runoff = 99.15 cfs @ 12.20 hrs, Volume= 7.153 af, Depth= 4.02" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 18.460 70 Woods, Good, HSG C * 2.670 74 75% Grass cover Good, HSG C * 0.167 74 County Ditch, HSG C * 0.030 98 County Road Surface, HSG C 21.327 Weighted Average 21.297 99.86% Pervious Area 0.030 0.14% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.1 1,350 0.1200 1.49 Lag/CN Method, Subcatchment W1nS: W1n Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)110 105 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=21.327 ac Runoff Volume=7.153 af Runoff Depth=4.02" Flow Length=1,350' Slope=0.1200 '/' Tc=15.1 min CN=WQ 99.15 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 275HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W2S: W2 Runoff = 16.74 cfs @ 12.17 hrs, Volume= 1.095 af, Depth= 4.12" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.182 74 Wetland, HSG C * 2.735 70 Woods, Good, HSG C * 0.059 74 75% Grass cover Good, HSG C * 0.102 74 County Ditch, HSG C * 0.073 98 County Road Surface, HSG C * 0.038 98 Existing road and sidewalk 3.189 Weighted Average 3.078 96.52% Pervious Area 0.111 3.48% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.1 725 0.0690 0.99 Lag/CN Method, Subcatchment W2S: W2 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=3.189 ac Runoff Volume=1.095 af Runoff Depth=4.12" Flow Length=725' Slope=0.0690 '/' Tc=12.1 min CN=WQ 16.74 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 276HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W6S: W6 Runoff = 4.73 cfs @ 12.06 hrs, Volume= 0.209 af, Depth= 4.37" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 0.061 74 Wetland, HSG C * 0.392 71 Meadow, HSG C * 0.080 74 75% Grass cover Good, HSG C * 0.041 98 Impervious, HSG C 0.575 Weighted Average 0.534 92.88% Pervious Area 0.041 7.12% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.7 200 0.0800 0.90 Lag/CN Method, Subcatchment W6S: W6 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=0.575 ac Runoff Volume=0.209 af Runoff Depth=4.37" Flow Length=200' Slope=0.0800 '/' Tc=3.7 min CN=WQ 4.73 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 277HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment WLS: WL Runoff = 41.45 cfs @ 12.06 hrs, Volume= 1.757 af, Depth= 3.98" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Area (ac) CN Description * 5.078 70 Woods, Good, HSG C * 0.219 74 75% Grass cover Good, HSG C 5.297 Weighted Average 5.297 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.2 300 0.2500 1.54 Lag/CN Method, Subcatchment WLS: WL Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41" Runoff Area=5.297 ac Runoff Volume=1.757 af Runoff Depth=3.98" Flow Length=300' Slope=0.2500 '/' Tc=3.2 min CN=WQ 41.45 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 278HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Reach Pipe from W2 to W1: Pipe from Wetland 2 to Wetland 1 [52] Hint: Inlet/Outlet conditions not evaluated Inflow = 8.94 cfs @ 13.65 hrs, Volume= 38.264 af Outflow = 8.94 cfs @ 13.66 hrs, Volume= 38.263 af, Atten= 0%, Lag= 0.2 min Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Max. Velocity= 5.09 fps, Min. Travel Time= 0.2 min Avg. Velocity = 2.23 fps, Avg. Travel Time= 0.5 min Peak Storage= 116 cf @ 13.66 hrs Average Depth at Peak Storage= 1.02' Bank-Full Depth= 2.25' Flow Area= 4.0 sf, Capacity= 21.10 cfs 27.0" Round Pipe n= 0.025 Length= 65.8' Slope= 0.0172 '/' Inlet Invert= 965.96', Outlet Invert= 964.83' Reach Pipe from W2 to W1: Pipe from Wetland 2 to Wetland 1 Inflow Outflow Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)10 9 8 7 6 5 4 3 2 1 0 Avg. Flow Depth=1.02' Max Vel=5.09 fps 27.0" Round Pipe n=0.025 L=65.8' S=0.0172 '/' Capacity=21.10 cfs 8.94 cfs 8.94 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 279HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 300P: Pond with IESF Inflow Area = 73.792 ac, 31.33% Impervious, Inflow Depth = 3.70" for 100y 24hr event Inflow = 239.81 cfs @ 12.26 hrs, Volume= 22.722 af Outflow = 104.08 cfs @ 12.66 hrs, Volume= 22.722 af, Atten= 57%, Lag= 23.9 min Primary = 66.79 cfs @ 12.66 hrs, Volume= 18.289 af Secondary = 37.29 cfs @ 12.66 hrs, Volume= 4.433 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 965.00' Surf.Area= 59,664 sf Storage= 254,284 cf Peak Elev= 970.12' @ 12.66 hrs Surf.Area= 108,608 sf Storage= 738,528 cf (484,244 cf above start) Plug-Flow detention time= 871.4 min calculated for 16.884 af (74% of inflow) Center-of-Mass det. time= 596.1 min ( 1,374.0 - 777.9 ) Volume Invert Avail.Storage Storage Description #1 955.00' 779,932 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 955.00 7,650 0 0 956.00 11,005 9,328 9,328 958.00 16,690 27,695 37,023 960.00 23,225 39,915 76,938 962.00 31,363 54,588 131,526 963.00 36,141 33,752 165,278 964.00 41,104 38,623 203,900 965.00 59,664 50,384 254,284 965.01 63,414 615 254,899 965.02 80,995 722 255,621 965.95 85,712 77,519 333,140 970.50 110,680 446,792 779,932 Device Routing Invert Outlet Devices #1 Primary 960.22'42.0" Round RCP_Round 42" L= 43.0' Ke= 0.500 Inlet / Outlet Invert= 960.22' / 960.00' S= 0.0051 '/' Cc= 0.900 n= 0.013, Flow Area= 9.62 sf #2 Device 1 965.95'Custom Weir, Cv= 2.62 (C= 3.28) Head (feet) 0.00 2.35 2.35 5.00 Width (feet) 0.50 0.50 7.00 7.00 #3 Device 2 960.00'42.0" Round RCP_Round 42" L= 10.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 960.00' / 960.00' S= 0.0000 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 9.62 sf #4 Device 1 963.00'6.0" Vert. 2 - 6" Draintile Outlet X 2.00 C= 0.600 #5 Device 4 965.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 965.00' - 965.01' Excluded Surface area = 59,664 sf #6 Secondary 960.22'36.0" Round RCP_Round 36" L= 43.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 960.22' / 960.00' S= 0.0051 '/' Cc= 0.900 Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 280HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf #7 Device 6 968.30'5.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Primary OutFlow Max=66.79 cfs @ 12.66 hrs HW=970.12' TW=958.45' (Dynamic Tailwater) 1=RCP_Round 42" (Passes 66.79 cfs of 132.27 cfs potential flow) 2=Custom Weir (Weir Controls 66.33 cfs @ 4.76 fps) 3=RCP_Round 42" (Passes 66.33 cfs of 129.04 cfs potential flow) 4=2 - 6" Draintile Outlet (Passes 0.46 cfs of 4.96 cfs potential flow) 5=Iron Enhanced Filtration (Exfiltration Controls 0.46 cfs) Secondary OutFlow Max=37.29 cfs @ 12.66 hrs HW=970.12' TW=958.45' (Dynamic Tailwater) 6=RCP_Round 36" (Passes 37.29 cfs of 98.66 cfs potential flow) 7=Sharp-Crested Rectangular Weir (Weir Controls 37.29 cfs @ 4.41 fps) Pond 300P: Pond with IESF Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)260 240 220 200 180 160 140 120 100 80 60 40 20 0 Inflow Area=73.792 ac Peak Elev=970.12' Storage=738,528 cf 239.81 cfs 104.08 cfs 66.79 cfs 37.29 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 281HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 400P: County pond with IESF Inflow Area = 4.800 ac, 45.05% Impervious, Inflow Depth = 5.56" for 100y 24hr event Inflow = 26.67 cfs @ 12.14 hrs, Volume= 2.226 af Outflow = 8.11 cfs @ 12.66 hrs, Volume= 2.226 af, Atten= 70%, Lag= 31.4 min Primary = 8.11 cfs @ 12.66 hrs, Volume= 2.226 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 984.00' Surf.Area= 10,824 sf Storage= 37,248 cf Peak Elev= 986.31' @ 12.66 hrs Surf.Area= 20,929 sf Storage= 78,514 cf (41,266 cf above start) Plug-Flow detention time= 437.9 min calculated for 1.371 af (62% of inflow) Center-of-Mass det. time= 221.6 min ( 986.7 - 765.1 ) Volume Invert Avail.Storage Storage Description #1 974.00' 185,067 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 974.00 485 0 0 975.00 868 677 677 976.00 1,334 1,101 1,778 978.00 2,522 3,856 5,634 980.00 4,030 6,552 12,186 982.00 5,839 9,869 22,055 983.00 6,862 6,351 28,405 984.00 10,824 8,843 37,248 984.01 11,174 110 37,358 984.02 15,262 132 37,490 984.45 16,243 6,774 44,264 985.00 17,254 9,212 53,475 986.00 20,050 18,652 72,127 987.00 22,870 21,460 93,587 991.00 22,870 91,480 185,067 Device Routing Invert Outlet Devices #1 Primary 982.00'15.0" Round RCP_Round 15" L= 29.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 982.00' / 982.00' S= 0.0000 '/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #2 Device 1 984.45'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 3.0' Crest Height #3 Device 2 982.00'15.0" Round RCP_Round 15" L= 22.0' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 981.75' / 982.00' S= -0.0114 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #4 Device 1 982.00'6.0" Vert. Draintile Outlet C= 0.600 #5 Device 4 984.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 984.00' - 984.01' Excluded Surface area = 10,824 sf Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 282HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Primary OutFlow Max=8.11 cfs @ 12.66 hrs HW=986.31' TW=980.27' (Dynamic Tailwater) 1=RCP_Round 15" (Passes 8.11 cfs of 12.58 cfs potential flow) 2=Sharp-Crested Rectangular Weir (Passes 8.06 cfs of 32.42 cfs potential flow) 3=RCP_Round 15" (Inlet Controls 8.06 cfs @ 6.57 fps) 4=Draintile Outlet (Passes 0.04 cfs of 1.91 cfs potential flow) 5=Iron Enhanced Filtration (Exfiltration Controls 0.04 cfs) Pond 400P: County pond with IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=4.800 ac Peak Elev=986.31' Storage=78,514 cf 26.67 cfs 8.11 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 283HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 404P: P-LU 2-2 [86] Warning: Oscillations may require smaller dt (severity=12861) Inflow = 131.50 cfs @ 12.09 hrs, Volume= 29.234 af Outflow = 7.32 cfs @ 26.45 hrs, Volume= 29.234 af, Atten= 94%, Lag= 861.8 min Primary = 7.32 cfs @ 26.45 hrs, Volume= 29.233 af Secondary = 0.14 cfs @ 12.25 hrs, Volume= 0.001 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 969.90' Surf.Area= 0.094 ac Storage= 0.085 af Peak Elev= 973.73' @ 18.07 hrs Surf.Area= 5.243 ac Storage= 9.770 af (9.684 af above start) Plug-Flow detention time= 628.1 min calculated for 29.148 af (100% of inflow) Center-of-Mass det. time= 585.6 min ( 2,743.4 - 2,157.8 ) Volume Invert Avail.Storage Storage Description #1 968.00' 11.223 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.010 0.000 0.000 969.00 0.040 0.025 0.025 970.00 0.100 0.070 0.095 971.00 0.533 0.316 0.411 972.00 3.130 1.831 2.243 973.00 4.690 3.910 6.153 974.00 5.450 5.070 11.223 Device Routing Invert Outlet Devices #1 Primary 968.58'30.0" Round RCP_Round 30" L= 85.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 968.58' / 968.08' S= 0.0059 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 4.91 sf #2 Secondary 972.01'15.0" Round Culvert L= 114.0' Ke= 0.500 Inlet / Outlet Invert= 971.97' / 972.01' S= -0.0004 '/' Cc= 0.900 n= 0.011, Flow Area= 1.23 sf Primary OutFlow Max=7.32 cfs @ 26.45 hrs HW=973.52' TW=973.42' (Dynamic Tailwater) 1=RCP_Round 30" (Inlet Controls 7.32 cfs @ 1.49 fps) Secondary OutFlow Max=0.13 cfs @ 12.25 hrs HW=972.28' TW=972.21' (Dynamic Tailwater) 2=Culvert (Outlet Controls 0.13 cfs @ 0.80 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 284HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 404P: P-LU 2-2 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 Peak Elev=973.73' Storage=9.770 af 131.50 cfs 7.32 cfs 7.32 cfs 0.14 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 285HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 490: CB inlet [57] Hint: Peaked at 985.82' (Flood elevation advised) Inflow Area = 5.397 ac, 16.24% Impervious, Inflow Depth = 4.42" for 100y 24hr event Inflow = 22.94 cfs @ 12.22 hrs, Volume= 1.988 af Outflow = 22.94 cfs @ 12.23 hrs, Volume= 1.988 af, Atten= 0%, Lag= 0.1 min Primary = 10.32 cfs @ 12.23 hrs, Volume= 1.596 af Secondary = 12.62 cfs @ 12.23 hrs, Volume= 0.392 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 985.82' @ 12.23 hrs Device Routing Invert Outlet Devices #1 Primary 984.63'19.0" Horiz. Orifice/Grate C= 0.600 in 22.0" Grate (75% open area) Limited to weir flow at low heads #2 Secondary 985.10'8.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=10.32 cfs @ 12.23 hrs HW=985.82' TW=968.61' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 10.32 cfs @ 5.24 fps) Secondary OutFlow Max=12.62 cfs @ 12.23 hrs HW=985.82' TW=982.81' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir (Weir Controls 12.62 cfs @ 2.20 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 286HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 490: CB inlet Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=5.397 ac Peak Elev=985.82' 22.94 cfs 22.94 cfs 10.32 cfs 12.62 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 287HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 491P: CB inlet [57] Hint: Peaked at 982.81' (Flood elevation advised) Inflow = 12.62 cfs @ 12.23 hrs, Volume= 0.392 af Outflow = 12.62 cfs @ 12.23 hrs, Volume= 0.392 af, Atten= 0%, Lag= 0.1 min Primary = 12.62 cfs @ 12.23 hrs, Volume= 0.392 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 982.81' @ 12.23 hrs Device Routing Invert Outlet Devices #1 Primary 981.04'19.0" Horiz. Orifice/Grate C= 0.600 in 22.0" Grate (75% open area) Limited to weir flow at low heads Primary OutFlow Max=12.62 cfs @ 12.23 hrs HW=982.81' TW=968.63' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 12.62 cfs @ 6.41 fps) Pond 491P: CB inlet Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Peak Elev=982.81' 12.62 cfs 12.62 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 288HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 500P: IESF Inflow Area = 1.766 ac, 29.44% Impervious, Inflow Depth = 5.20" for 100y 24hr event Inflow = 12.73 cfs @ 12.12 hrs, Volume= 0.765 af Outflow = 12.68 cfs @ 12.13 hrs, Volume= 0.765 af, Atten= 0%, Lag= 0.7 min Primary = 12.68 cfs @ 12.13 hrs, Volume= 0.765 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 985.50' @ 12.13 hrs Surf.Area= 2,961 sf Storage= 3,363 cf Plug-Flow detention time= 149.0 min calculated for 0.765 af (100% of inflow) Center-of-Mass det. time= 149.0 min ( 915.5 - 766.5 ) Volume Invert Avail.Storage Storage Description #1 984.00' 6,740 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 984.00 0 0 0 984.01 200 1 1 984.02 1,600 9 10 985.00 2,468 1,993 2,003 985.50 2,960 1,357 3,360 986.00 3,520 1,620 4,980 986.50 3,520 1,760 6,740 Device Routing Invert Outlet Devices #1 Primary 982.00'6.0" Vert. Draintile Outlet C= 0.600 #2 Device 1 984.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 984.00' - 984.01' Excluded Surface area = 0 sf #3 Primary 985.30'60.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=12.67 cfs @ 12.13 hrs HW=985.50' TW=979.31' (Dynamic Tailwater) 1=Draintile Outlet (Passes 0.02 cfs of 1.70 cfs potential flow) 2=Iron Enhanced Filtration (Exfiltration Controls 0.02 cfs) 3=Broad-Crested Rectangular Weir (Weir Controls 12.65 cfs @ 1.05 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 289HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 500P: IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=1.766 ac Peak Elev=985.50' Storage=3,363 cf 12.73 cfs 12.68 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 290HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 600P: rain garden Inflow Area = 2.197 ac, 13.03% Impervious, Inflow Depth = 2.99" for 100y 24hr event Inflow = 5.88 cfs @ 12.31 hrs, Volume= 0.547 af Outflow = 5.72 cfs @ 12.34 hrs, Volume= 0.582 af, Atten= 3%, Lag= 1.8 min Discarded = 0.01 cfs @ 11.89 hrs, Volume= 0.076 af Primary = 5.72 cfs @ 12.34 hrs, Volume= 0.506 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 999.88' @ 12.34 hrs Surf.Area= 2,045 sf Storage= 1,987 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 620.8 min ( 1,434.8 - 814.0 ) Volume Invert Avail.Storage Storage Description #1 998.70' 6,330 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 998.70 1,000 0 0 999.50 2,045 1,218 1,218 1,000.00 2,045 1,023 2,240 1,002.00 2,045 4,090 6,330 Device Routing Invert Outlet Devices #1 Primary 999.50'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 998.70'0.200 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 11.89 hrs HW=999.50' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=5.72 cfs @ 12.34 hrs HW=999.88' TW=958.13' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 5.72 cfs @ 1.52 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 291HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 600P: rain garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)6 5 4 3 2 1 0 Inflow Area=2.197 ac Peak Elev=999.88' Storage=1,987 cf 5.88 cfs 5.72 cfs 0.01 cfs 5.72 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 292HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 800P: rain garden Inflow Area = 1.094 ac, 15.23% Impervious, Inflow Depth = 4.68" for 100y 24hr event Inflow = 7.70 cfs @ 12.11 hrs, Volume= 0.426 af Outflow = 7.39 cfs @ 12.13 hrs, Volume= 0.426 af, Atten= 4%, Lag= 1.3 min Discarded = 0.01 cfs @ 12.13 hrs, Volume= 0.036 af Primary = 7.38 cfs @ 12.13 hrs, Volume= 0.390 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,001.94' @ 12.13 hrs Surf.Area= 2,127 sf Storage= 1,885 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 126.7 min ( 900.5 - 773.8 ) Volume Invert Avail.Storage Storage Description #1 1,000.70' 2,017 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,000.70 850 0 0 1,001.00 1,350 330 330 1,001.50 1,600 738 1,067 1,002.00 2,200 950 2,017 Device Routing Invert Outlet Devices #1 Primary 1,001.50'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 1,000.70'0.200 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.13 hrs HW=1,001.94' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=7.38 cfs @ 12.13 hrs HW=1,001.94' TW=1,000.73' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 7.38 cfs @ 1.68 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 293HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 800P: rain garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=1.094 ac Peak Elev=1,001.94' Storage=1,885 cf 7.70 cfs 7.39 cfs 0.01 cfs 7.38 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 294HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 900P: IESF Inflow Area = 1.215 ac, 34.66% Impervious, Inflow Depth = 5.36" for 100y 24hr event Inflow = 8.79 cfs @ 12.13 hrs, Volume= 0.543 af Outflow = 8.31 cfs @ 12.16 hrs, Volume= 0.543 af, Atten= 5%, Lag= 1.8 min Primary = 8.31 cfs @ 12.16 hrs, Volume= 0.543 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 992.47' @ 12.16 hrs Surf.Area= 3,093 sf Storage= 3,442 cf Plug-Flow detention time= 206.6 min calculated for 0.543 af (100% of inflow) Center-of-Mass det. time= 206.6 min ( 970.9 - 764.2 ) Volume Invert Avail.Storage Storage Description #1 991.00' 3,533 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.00 0 0 0 991.01 100 0 0 991.02 1,650 9 9 991.50 2,131 907 917 992.00 2,605 1,184 2,101 992.50 3,124 1,432 3,533 Device Routing Invert Outlet Devices #1 Primary 989.00'6.0" Vert. Draintile Outlet C= 0.600 #2 Device 1 991.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 991.00' - 991.01' Excluded Surface area = 0 sf #3 Primary 992.00'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=8.31 cfs @ 12.16 hrs HW=992.47' TW=987.96' (Dynamic Tailwater) 1=Draintile Outlet (Passes 0.01 cfs of 1.70 cfs potential flow) 2=Iron Enhanced Filtration (Exfiltration Controls 0.01 cfs) 3=Broad-Crested Rectangular Weir (Weir Controls 8.30 cfs @ 1.76 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 295HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 900P: IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)9 8 7 6 5 4 3 2 1 0 Inflow Area=1.215 ac Peak Elev=992.47' Storage=3,442 cf 8.79 cfs 8.31 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 296HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond CB-9: EX CB-9 [57] Hint: Peaked at 989.47' (Flood elevation advised) Inflow Area = 11.464 ac, 0.00% Impervious, Inflow Depth = 4.66" for 100y 24hr event Inflow = 11.78 cfs @ 12.59 hrs, Volume= 4.452 af Outflow = 11.78 cfs @ 12.60 hrs, Volume= 4.452 af, Atten= 0%, Lag= 0.1 min Primary = 11.78 cfs @ 12.60 hrs, Volume= 4.452 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 989.47' @ 12.60 hrs Device Routing Invert Outlet Devices #1 Primary 987.85'24.0" Round CMP_Round 24" L= 94.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 987.85' / 980.75' S= 0.0755 '/' Cc= 0.900 n= 0.025 Corrugated metal, Flow Area= 3.14 sf Primary OutFlow Max=11.78 cfs @ 12.60 hrs HW=989.47' TW=980.19' (Dynamic Tailwater) 1=CMP_Round 24" (Inlet Controls 11.78 cfs @ 4.33 fps) Pond CB-9: EX CB-9 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=11.464 ac Peak Elev=989.47' 24.0" Round Culvert n=0.025 L=94.0' S=0.0755 '/' 11.78 cfs 11.78 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 297HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond LUCY: LAKE LUCY [40] Hint: Not Described (Outflow=Inflow) Inflow = 191.92 cfs @ 13.57 hrs, Volume= 140.589 af Primary = 191.92 cfs @ 13.57 hrs, Volume= 140.589 af, Atten= 0%, Lag= 0.1 min Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Pond LUCY: LAKE LUCY Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)210 200 190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 191.92 cfs 191.92 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 298HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-1: P-LU 2-1 [86] Warning: Oscillations may require smaller dt (severity=48791) Inflow = 407.85 cfs @ 12.60 hrs, Volume= 109.474 af Outflow = 186.14 cfs @ 13.57 hrs, Volume= 137.805 af, Atten= 54%, Lag= 58.4 min Primary = 186.14 cfs @ 13.57 hrs, Volume= 137.805 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 958.86' @ 13.57 hrs Surf.Area= 979,542 sf Storage= 1,183,339 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 1,740.0 min ( 3,268.0 - 1,528.1 ) Volume Invert Avail.Storage Storage Description #1 957.00' 6,136,244 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 957.00 8,105 0 0 958.00 557,600 282,853 282,853 960.00 1,540,893 2,098,493 2,381,346 962.00 2,214,005 3,754,898 6,136,244 Device Routing Invert Outlet Devices #1 Primary 957.00'20.0' long Broad-Crested Rectangular Weir X 0.00 Head (feet) 0.50 1.00 1.50 Coef. (English) 3.00 3.00 3.00 #2 Primary 956.50'Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 0.00 0.50 1.00 1.50 2.00 2.50 Width (feet) 2.00 6.00 16.00 25.00 37.00 45.00 Primary OutFlow Max=186.14 cfs @ 13.57 hrs HW=958.86' TW=0.00' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) 2=Custom Weir/Orifice (Weir Controls 186.14 cfs @ 3.92 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 299HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-1: P-LU 2-1 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)440 420 400 380 360 340 320 300 280 260 240 220 200 180 160 140 120 100 80 60 40 20 0 Peak Elev=958.86' Storage=1,183,339 cf 407.85 cfs 186.14 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 300HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-10: P-LU 2-10 Inflow Area = 9.880 ac, 0.00% Impervious, Inflow Depth = 4.29" for 100y 24hr event Inflow = 72.06 cfs @ 12.09 hrs, Volume= 3.533 af Outflow = 18.74 cfs @ 12.37 hrs, Volume= 3.368 af, Atten= 74%, Lag= 17.0 min Primary = 18.74 cfs @ 12.37 hrs, Volume= 3.368 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 977.70' @ 12.37 hrs Surf.Area= 0.323 ac Storage= 1.189 af Plug-Flow detention time= 120.6 min calculated for 3.368 af (95% of inflow) Center-of-Mass det. time= 98.8 min ( 880.7 - 781.8 ) Volume Invert Avail.Storage Storage Description #1 968.00' 1.289 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.009 0.000 0.000 972.00 0.070 0.158 0.158 974.00 0.140 0.210 0.368 976.00 0.220 0.360 0.728 978.00 0.341 0.561 1.289 Device Routing Invert Outlet Devices #1 Primary 972.10'18.0" Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=18.74 cfs @ 12.37 hrs HW=977.70' TW=972.45' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 18.74 cfs @ 10.60 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 301HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-10: P-LU 2-10 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=9.880 ac Peak Elev=977.70' Storage=1.189 af 72.06 cfs 18.74 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 302HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-11: P-LU 2-11 [86] Warning: Oscillations may require smaller dt (severity=1) Inflow = 292.61 cfs @ 12.17 hrs, Volume= 24.272 af Outflow = 4.21 cfs @ 24.27 hrs, Volume= 17.241 af, Atten= 99%, Lag= 725.6 min Primary = 4.21 cfs @ 24.27 hrs, Volume= 17.241 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 974.34' @ 18.18 hrs Surf.Area= 8.684 ac Storage= 21.214 af Plug-Flow detention time= 2,134.9 min calculated for 17.241 af (71% of inflow) Center-of-Mass det. time= 2,071.3 min ( 2,878.9 - 807.6 ) Volume Invert Avail.Storage Storage Description #1 968.00' 93.400 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.360 0.000 0.000 970.00 1.000 1.360 1.360 972.00 4.000 5.000 6.360 976.00 12.000 32.000 38.360 980.00 15.520 55.040 93.400 Device Routing Invert Outlet Devices #1 Primary 972.01'15.0" Round Culvert L= 114.0' Ke= 0.500 Inlet / Outlet Invert= 972.01' / 971.97' S= 0.0004 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 1.23 sf Primary OutFlow Max=4.21 cfs @ 24.27 hrs HW=974.22' TW=973.60' (Dynamic Tailwater) 1=Culvert (Outlet Controls 4.21 cfs @ 3.43 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 303HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-11: P-LU 2-11 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)320 300 280 260 240 220 200 180 160 140 120 100 80 60 40 20 0 Peak Elev=974.34' Storage=21.214 af 15.0" Round Culvert n=0.011 L=114.0' S=0.0004 '/' 292.61 cfs 4.21 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 304HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-12: P-LU 2-12 Inflow Area = 9.720 ac, 0.00% Impervious, Inflow Depth = 4.18" for 100y 24hr event Inflow = 69.09 cfs @ 12.09 hrs, Volume= 3.386 af Outflow = 15.71 cfs @ 12.55 hrs, Volume= 2.366 af, Atten= 77%, Lag= 27.6 min Primary = 9.81 cfs @ 12.55 hrs, Volume= 2.284 af Secondary = 5.90 cfs @ 12.55 hrs, Volume= 0.082 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 980.08' @ 12.55 hrs Surf.Area= 0.434 ac Storage= 1.744 af Plug-Flow detention time= 160.2 min calculated for 2.366 af (70% of inflow) Center-of-Mass det. time= 104.4 min ( 887.4 - 783.0 ) Volume Invert Avail.Storage Storage Description #1 972.00' 2.680 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 972.00 0.080 0.000 0.000 978.00 0.260 1.020 1.020 980.00 0.430 0.690 1.710 982.00 0.540 0.970 2.680 Device Routing Invert Outlet Devices #1 Primary 978.00'18.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 980.00'100.0' long x 26.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=9.81 cfs @ 12.55 hrs HW=980.08' TW=972.99' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 9.81 cfs @ 5.55 fps) Secondary OutFlow Max=5.90 cfs @ 12.55 hrs HW=980.08' TW=972.99' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir (Weir Controls 5.90 cfs @ 0.75 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 305HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-12: P-LU 2-12 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=9.720 ac Peak Elev=980.08' Storage=1.744 af 69.09 cfs 15.71 cfs 9.81 cfs 5.90 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 306HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-13: P-LU 2-13 Inflow Area = 15.390 ac, 0.00% Impervious, Inflow Depth = 4.18" for 100y 24hr event Inflow = 103.72 cfs @ 12.10 hrs, Volume= 5.362 af Outflow = 27.50 cfs @ 12.41 hrs, Volume= 4.850 af, Atten= 73%, Lag= 19.1 min Primary = 27.50 cfs @ 12.41 hrs, Volume= 4.850 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 993.90' @ 12.41 hrs Surf.Area= 0.531 ac Storage= 2.111 af Plug-Flow detention time= 89.2 min calculated for 4.850 af (90% of inflow) Center-of-Mass det. time= 55.7 min ( 839.6 - 783.9 ) Volume Invert Avail.Storage Storage Description #1 986.00' 2.750 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 986.00 0.054 0.000 0.000 989.60 0.230 0.511 0.511 993.00 0.450 1.156 1.667 994.00 0.540 0.495 2.162 995.00 0.635 0.587 2.750 Device Routing Invert Outlet Devices #1 Primary 989.60'24.0" Round Culvert L= 110.0' Ke= 0.500 Inlet / Outlet Invert= 989.60' / 983.00' S= 0.0600 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 3.14 sf Primary OutFlow Max=27.50 cfs @ 12.41 hrs HW=993.90' TW=972.73' (Dynamic Tailwater) 1=Culvert (Inlet Controls 27.50 cfs @ 8.75 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 307HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-13: P-LU 2-13 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)115 110 105 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=15.390 ac Peak Elev=993.90' Storage=2.111 af 24.0" Round Culvert n=0.011 L=110.0' S=0.0600 '/' 103.72 cfs 27.50 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 308HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Inflow Area = 53.360 ac, 0.00% Impervious, Inflow Depth = 4.21" for 100y 24hr event Inflow = 240.02 cfs @ 12.22 hrs, Volume= 18.720 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 993.92' @ 250.00 hrs Surf.Area= 12.726 ac Storage= 18.720 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 991.90' 52.450 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 991.90 5.100 0.000 0.000 992.00 5.900 0.550 0.550 994.00 13.000 18.900 19.450 996.00 20.000 33.000 52.450 Device Routing Invert Outlet Devices #1 Primary 995.00'30.0' long Broad-Crested Rectangular Weir Head (feet) 0.50 1.00 Coef. (English) 2.80 2.80 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=991.90' TW=957.00' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 309HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)260 240 220 200 180 160 140 120 100 80 60 40 20 0 Inflow Area=53.360 ac Peak Elev=993.92' Storage=18.720 af 240.02 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 310HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-4: P-LU 2-4 Inflow Area = 13.940 ac, 3.87% Impervious, Inflow Depth = 5.00" for 100y 24hr event Inflow = 99.88 cfs @ 12.11 hrs, Volume= 5.811 af Outflow = 97.03 cfs @ 12.13 hrs, Volume= 5.491 af, Atten= 3%, Lag= 1.0 min Primary = 12.53 cfs @ 12.13 hrs, Volume= 2.508 af Secondary = 84.49 cfs @ 12.13 hrs, Volume= 2.984 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 976.05' @ 12.13 hrs Surf.Area= 0.201 ac Storage= 0.669 af Plug-Flow detention time= 46.3 min calculated for 5.491 af (94% of inflow) Center-of-Mass det. time= 22.5 min ( 798.1 - 775.6 ) Volume Invert Avail.Storage Storage Description #1 970.00' 1.120 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 970.00 0.020 0.000 0.000 974.00 0.140 0.320 0.320 978.00 0.260 0.800 1.120 Device Routing Invert Outlet Devices #1 Primary 974.00'21.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 975.00'30.0' long x 15.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=12.53 cfs @ 12.13 hrs HW=976.05' TW=972.42' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 12.53 cfs @ 5.21 fps) Secondary OutFlow Max=84.49 cfs @ 12.13 hrs HW=976.05' TW=972.42' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir (Weir Controls 84.49 cfs @ 2.69 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 311HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-4: P-LU 2-4 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)110 105 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=13.940 ac Peak Elev=976.05' Storage=0.669 af 99.88 cfs 97.03 cfs 12.53 cfs 84.49 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 312HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-5: P-LU 2-5 Inflow Area = 9.150 ac, 0.00% Impervious, Inflow Depth = 4.85" for 100y 24hr event Inflow = 71.12 cfs @ 12.10 hrs, Volume= 3.697 af Outflow = 15.79 cfs @ 12.56 hrs, Volume= 3.716 af, Atten= 78%, Lag= 28.0 min Primary = 15.79 cfs @ 12.56 hrs, Volume= 3.716 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 965.00' Surf.Area= 0.200 ac Storage= 0.447 af Peak Elev= 967.53' @ 12.56 hrs Surf.Area= 0.935 ac Storage= 2.056 af (1.609 af above start) Plug-Flow detention time= 156.6 min calculated for 3.269 af (88% of inflow) Center-of-Mass det. time= 97.0 min ( 873.7 - 776.7 ) Volume Invert Avail.Storage Storage Description #1 956.00' 2.352 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 956.00 0.004 0.000 0.000 962.00 0.030 0.102 0.102 965.00 0.200 0.345 0.447 968.00 1.070 1.905 2.352 Device Routing Invert Outlet Devices #1 Primary 962.98'18.0" Round Culvert L= 30.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 962.98' / 962.83' S= 0.0050 '/' Cc= 0.900 n= 0.013, Flow Area= 1.77 sf #2 Device 1 964.83'15.0" Round Culvert L= 15.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 963.38' / 964.83' S= -0.0967 '/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #3 Device 1 966.00'18.0" W x 12.0" H Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=15.79 cfs @ 12.56 hrs HW=967.53' TW=958.35' (Dynamic Tailwater) 1=Culvert (Passes 15.79 cfs of 16.60 cfs potential flow) 2=Culvert (Inlet Controls 8.52 cfs @ 6.94 fps) 3=Orifice/Grate (Orifice Controls 7.27 cfs @ 4.85 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 313HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-5: P-LU 2-5 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=9.150 ac Peak Elev=967.53' Storage=2.056 af 71.12 cfs 15.79 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 314HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-6: Wetland 11 Inflow Area = 23.494 ac, 12.62% Impervious, Inflow Depth = 4.83" for 100y 24hr event Inflow = 56.66 cfs @ 12.17 hrs, Volume= 9.453 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 982.43' @ 250.00 hrs Surf.Area= 153,609 sf Storage= 411,780 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 978.00' 1,458,300 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 978.00 16,553 0 0 980.00 90,625 107,178 107,178 982.00 148,800 239,425 346,603 984.00 171,115 319,915 666,518 986.00 197,334 368,449 1,034,967 988.00 225,999 423,333 1,458,300 Device Routing Invert Outlet Devices #1 Primary 982.57'15.0" Round RCP_Round 15" L= 50.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 982.57' / 982.05' S= 0.0104 '/' Cc= 0.900 n= 0.013 Concrete sewer w/manholes & inlets, Flow Area= 1.23 sf Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=978.00' TW=965.00' (Dynamic Tailwater) 1=RCP_Round 15" ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 315HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-6: Wetland 11 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=23.494 ac Peak Elev=982.43' Storage=411,780 cf 15.0" Round Culvert n=0.013 L=50.0' S=0.0104 '/' 56.66 cfs 0.00 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 316HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-7: P-LU 2-7 Inflow Area = 8.904 ac, 0.00% Impervious, Inflow Depth = 4.74" for 100y 24hr event Inflow = 67.72 cfs @ 12.10 hrs, Volume= 3.514 af Outflow = 8.16 cfs @ 13.04 hrs, Volume= 3.514 af, Atten= 88%, Lag= 56.4 min Primary = 8.16 cfs @ 13.04 hrs, Volume= 3.514 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 995.27' Surf.Area= 7,683 sf Storage= 18,263 cf Peak Elev= 1,000.79' @ 13.04 hrs Surf.Area= 19,671 sf Storage= 93,196 cf (74,933 cf above start) Plug-Flow detention time= 178.2 min calculated for 3.094 af (88% of inflow) Center-of-Mass det. time= 117.3 min ( 895.2 - 777.9 ) Volume Invert Avail.Storage Storage Description #1 991.00' 117,493 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.00 871 0 0 995.27 7,683 18,263 18,263 996.00 8,932 6,064 24,327 998.00 12,906 21,838 46,165 1,000.00 18,379 31,285 77,450 1,002.00 21,664 40,043 117,493 Device Routing Invert Outlet Devices #1 Primary 995.27'12.0" Round RCP_Round 12" L= 60.8' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 995.27' / 994.07' S= 0.0197 '/' Cc= 0.900 n= 0.013, Flow Area= 0.79 sf Primary OutFlow Max=8.16 cfs @ 13.04 hrs HW=1,000.79' TW=989.44' (Dynamic Tailwater) 1=RCP_Round 12" (Barrel Controls 8.16 cfs @ 10.39 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 317HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-7: P-LU 2-7 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=8.904 ac Peak Elev=1,000.79' Storage=93,196 cf 12.0" Round Culvert n=0.013 L=60.8' S=0.0197 '/' 67.72 cfs 8.16 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 318HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-8: P-LU 2-8 Inflow Area = 5.830 ac, 0.00% Impervious, Inflow Depth = 4.29" for 100y 24hr event Inflow = 44.80 cfs @ 12.07 hrs, Volume= 2.085 af Outflow = 43.42 cfs @ 12.09 hrs, Volume= 1.724 af, Atten= 3%, Lag= 0.9 min Primary = 3.34 cfs @ 12.09 hrs, Volume= 0.931 af Secondary = 40.08 cfs @ 12.09 hrs, Volume= 0.793 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 997.28' @ 12.09 hrs Surf.Area= 0.191 ac Storage= 0.572 af Plug-Flow detention time= 98.3 min calculated for 1.724 af (83% of inflow) Center-of-Mass det. time= 54.1 min ( 835.0 - 780.9 ) Volume Invert Avail.Storage Storage Description #1 992.00' 0.720 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 992.00 0.040 0.000 0.000 996.00 0.140 0.360 0.360 998.00 0.220 0.360 0.720 Device Routing Invert Outlet Devices #1 Primary 996.00'12.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 997.00'50.0' long x 20.0' breadth Broad-Crested Rectangular Weir X 2.00 Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=3.34 cfs @ 12.09 hrs HW=997.28' TW=992.25' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 3.34 cfs @ 4.26 fps) Secondary OutFlow Max=40.07 cfs @ 12.09 hrs HW=997.28' TW=992.25' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir (Weir Controls 40.07 cfs @ 1.43 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 319HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-8: P-LU 2-8 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)50 45 40 35 30 25 20 15 10 5 0 Inflow Area=5.830 ac Peak Elev=997.28' Storage=0.572 af 44.80 cfs 43.42 cfs 3.34 cfs 40.08 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 320HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-9: P-LU 2-9 Inflow Area = 11.210 ac, 0.00% Impervious, Inflow Depth = 4.07" for 100y 24hr event Inflow = 73.55 cfs @ 12.10 hrs, Volume= 3.803 af Outflow = 1.21 cfs @ 15.16 hrs, Volume= 1.973 af, Atten= 98%, Lag= 183.6 min Primary = 1.21 cfs @ 15.16 hrs, Volume= 1.973 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 977.89' @ 15.16 hrs Surf.Area= 1.702 ac Storage= 3.242 af Plug-Flow detention time= 1,265.7 min calculated for 1.973 af (52% of inflow) Center-of-Mass det. time= 1,200.0 min ( 1,985.2 - 785.1 ) Volume Invert Avail.Storage Storage Description #1 975.00' 3.430 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 975.00 0.230 0.000 0.000 977.00 1.560 1.790 1.790 978.00 1.720 1.640 3.430 Device Routing Invert Outlet Devices #1 Primary 977.00'8.0" Vert. Orifice/Grate C= 0.580 Primary OutFlow Max=1.21 cfs @ 15.16 hrs HW=977.89' TW=973.69' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 1.21 cfs @ 3.46 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 321HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-9: P-LU 2-9 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=11.210 ac Peak Elev=977.89' Storage=3.242 af 73.55 cfs 1.21 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 322HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU-2-16: P-LU-2-16 Inflow Area = 2.560 ac, 0.00% Impervious, Inflow Depth = 4.40" for 100y 24hr event Inflow = 21.26 cfs @ 12.07 hrs, Volume= 0.939 af Outflow = 3.66 cfs @ 12.55 hrs, Volume= 0.938 af, Atten= 83%, Lag= 29.1 min Primary = 3.66 cfs @ 12.55 hrs, Volume= 0.938 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 994.07' Surf.Area= 9,913 sf Storage= 902 cf Peak Elev= 995.51' @ 12.55 hrs Surf.Area= 14,513 sf Storage= 19,443 cf (18,541 cf above start) Plug-Flow detention time= 164.4 min calculated for 0.917 af (98% of inflow) Center-of-Mass det. time= 146.4 min ( 925.2 - 778.8 ) Volume Invert Avail.Storage Storage Description #1 994.00' 107,634 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 994.00 9,689 0 0 996.00 16,084 25,773 25,773 998.00 20,360 36,444 62,217 1,000.00 25,057 45,417 107,634 Device Routing Invert Outlet Devices #1 Primary 994.07'12.0" Round RCP_Round 12" L= 93.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 994.07' / 987.85' S= 0.0669 '/' Cc= 0.900 n= 0.013, Flow Area= 0.79 sf Primary OutFlow Max=3.66 cfs @ 12.55 hrs HW=995.51' TW=989.46' (Dynamic Tailwater) 1=RCP_Round 12" (Inlet Controls 3.66 cfs @ 4.67 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 323HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU-2-16: P-LU-2-16 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=2.560 ac Peak Elev=995.51' Storage=19,443 cf 12.0" Round Culvert n=0.013 L=93.0' S=0.0669 '/' 21.26 cfs 3.66 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 324HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU10-1: P-LU 10-1 Inflow Area = 7.937 ac, 0.00% Impervious, Inflow Depth = 4.80" for 100y 24hr event Inflow = 64.40 cfs @ 12.09 hrs, Volume= 3.178 af Outflow = 45.47 cfs @ 12.15 hrs, Volume= 2.784 af, Atten= 29%, Lag= 3.6 min Primary = 6.20 cfs @ 12.15 hrs, Volume= 2.023 af Secondary = 39.27 cfs @ 12.15 hrs, Volume= 0.760 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 966.29' @ 12.15 hrs Surf.Area= 0.307 ac Storage= 1.153 af Plug-Flow detention time= 112.8 min calculated for 2.784 af (88% of inflow) Center-of-Mass det. time= 75.8 min ( 851.9 - 776.2 ) Volume Invert Avail.Storage Storage Description #1 958.00' 1.715 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 958.00 0.020 0.000 0.000 962.00 0.100 0.240 0.240 963.10 0.180 0.154 0.394 964.00 0.200 0.171 0.565 966.00 0.300 0.500 1.065 968.00 0.350 0.650 1.715 Device Routing Invert Outlet Devices #1 Primary 963.10'12.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 966.00'100.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=6.20 cfs @ 12.15 hrs HW=966.29' TW=0.00' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 6.20 cfs @ 7.90 fps) Secondary OutFlow Max=39.26 cfs @ 12.15 hrs HW=966.29' TW=0.00' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir (Weir Controls 39.26 cfs @ 1.36 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 325HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU10-1: P-LU 10-1 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Inflow Area=7.937 ac Peak Elev=966.29' Storage=1.153 af 64.40 cfs 45.47 cfs 6.20 cfs 39.27 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 326HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W12: Wetland 12 Inflow Area = 0.734 ac, 6.42% Impervious, Inflow Depth = 4.41" for 100y 24hr event Inflow = 6.50 cfs @ 12.05 hrs, Volume= 0.269 af Outflow = 0.96 cfs @ 12.53 hrs, Volume= 0.190 af, Atten= 85%, Lag= 28.9 min Primary = 0.96 cfs @ 12.53 hrs, Volume= 0.190 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 994.55' @ 12.53 hrs Surf.Area= 0.138 ac Storage= 0.145 af Plug-Flow detention time= 218.0 min calculated for 0.190 af (71% of inflow) Center-of-Mass det. time= 162.9 min ( 937.2 - 774.3 ) Volume Invert Avail.Storage Storage Description #1 992.50' 0.430 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 992.50 0.002 0.000 0.000 993.00 0.035 0.009 0.009 993.50 0.070 0.026 0.035 994.00 0.104 0.043 0.079 994.50 0.134 0.059 0.138 995.00 0.171 0.076 0.215 995.50 0.210 0.095 0.310 996.00 0.269 0.120 0.430 Device Routing Invert Outlet Devices #1 Primary 994.00'15.0" Round RCP_Round 15" L= 45.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 994.00' / 993.82' S= 0.0040 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf Primary OutFlow Max=0.96 cfs @ 12.53 hrs HW=994.55' TW=970.05' (Dynamic Tailwater) 1=RCP_Round 15" (Barrel Controls 0.96 cfs @ 2.72 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 327HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W12: Wetland 12 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=0.734 ac Peak Elev=994.55' Storage=0.145 af 15.0" Round Culvert n=0.013 L=45.0' S=0.0040 '/' 6.50 cfs 0.96 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 328HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W13: Wetland 13 Inflow Area = 1.729 ac, 6.61% Impervious, Inflow Depth = 4.52" for 100y 24hr event Inflow = 11.05 cfs @ 12.13 hrs, Volume= 0.651 af Outflow = 5.88 cfs @ 12.28 hrs, Volume= 0.525 af, Atten= 47%, Lag= 8.9 min Primary = 5.88 cfs @ 12.28 hrs, Volume= 0.525 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 993.38' @ 12.28 hrs Surf.Area= 15,185 sf Storage= 10,269 cf Plug-Flow detention time= 89.9 min calculated for 0.525 af (81% of inflow) Center-of-Mass det. time= 43.4 min ( 823.4 - 780.0 ) Volume Invert Avail.Storage Storage Description #1 991.50' 22,402 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.50 17 0 0 992.00 648 166 166 993.00 10,069 5,359 5,525 994.00 23,685 16,877 22,402 Device Routing Invert Outlet Devices #1 Primary 993.00'10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=5.88 cfs @ 12.28 hrs HW=993.38' TW=988.02' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 5.88 cfs @ 1.56 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 329HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W13: Wetland 13 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=1.729 ac Peak Elev=993.38' Storage=10,269 cf 11.05 cfs 5.88 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 330HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W14: Wetland 14 Inflow Area = 5.397 ac, 16.24% Impervious, Inflow Depth = 4.50" for 100y 24hr event Inflow = 27.66 cfs @ 12.14 hrs, Volume= 2.022 af Outflow = 22.94 cfs @ 12.22 hrs, Volume= 1.988 af, Atten= 17%, Lag= 4.7 min Primary = 22.94 cfs @ 12.22 hrs, Volume= 1.988 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 988.05' @ 12.22 hrs Surf.Area= 9,557 sf Storage= 9,194 cf Plug-Flow detention time= 55.8 min calculated for 1.988 af (98% of inflow) Center-of-Mass det. time= 13.5 min ( 854.0 - 840.4 ) Volume Invert Avail.Storage Storage Description #1 986.00' 27,529 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 986.00 261 0 0 986.50 1,045 327 327 987.00 3,560 1,151 1,478 987.50 8,040 2,900 4,378 988.00 9,380 4,355 8,733 988.50 11,195 5,144 13,877 989.00 13,765 6,240 20,117 989.50 15,884 7,412 27,529 Device Routing Invert Outlet Devices #1 Primary 987.00'8.0' long x 4.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Primary OutFlow Max=22.94 cfs @ 12.22 hrs HW=988.05' TW=985.82' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 22.94 cfs @ 2.73 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 331HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W14: Wetland 14 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=5.397 ac Peak Elev=988.05' Storage=9,194 cf 27.66 cfs 22.94 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 332HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W2: Wetland 2 [86] Warning: Oscillations may require smaller dt (severity=4) Inflow = 169.86 cfs @ 12.12 hrs, Volume= 39.047 af Outflow = 12.91 cfs @ 12.62 hrs, Volume= 39.047 af, Atten= 92%, Lag= 30.0 min Primary = 8.94 cfs @ 13.65 hrs, Volume= 38.264 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Tertiary = 4.17 cfs @ 12.48 hrs, Volume= 0.783 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 969.90' Surf.Area= 2,833 sf Storage= 1,494 cf Peak Elev= 973.70' @ 13.65 hrs Surf.Area= 141,861 sf Storage= 255,343 cf (253,850 cf above start) Plug-Flow detention time= 282.6 min calculated for 39.012 af (100% of inflow) Center-of-Mass det. time= 269.6 min ( 2,522.2 - 2,252.5 ) Volume Invert Avail.Storage Storage Description #1 968.85' 1,052,827 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 968.85 12 0 0 970.00 3,102 1,791 1,791 972.00 70,418 73,520 75,311 974.00 154,658 225,076 300,387 976.00 189,337 343,995 644,382 978.00 219,108 408,445 1,052,827 Device Routing Invert Outlet Devices #1 Primary 967.70'18.0" Round CMP_Round 18" L= 210.0' CMP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 967.70' / 965.96' S= 0.0083 '/' Cc= 0.900 n= 0.025 Corrugated metal, Flow Area= 1.77 sf #2 Device 1 969.90'20.0' long x 5.0' breadth Ditch Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #3 Secondary 979.30'30.0' long x 15.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 #4 Tertiary 968.58'30.0" Round Culvert L= 85.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 968.08' / 968.58' S= -0.0059 '/' Cc= 0.900 n= 0.120, Flow Area= 4.91 sf Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 333HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Primary OutFlow Max=8.94 cfs @ 13.65 hrs HW=973.70' TW=966.98' (Dynamic Tailwater) 1=CMP_Round 18" (Barrel Controls 8.94 cfs @ 5.06 fps) 2=Ditch Berm (Passes 8.94 cfs of 398.20 cfs potential flow) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=969.90' TW=957.00' (Dynamic Tailwater) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Tertiary OutFlow Max=4.16 cfs @ 12.48 hrs HW=973.34' TW=972.58' (Dynamic Tailwater) 4=Culvert (Outlet Controls 4.16 cfs @ 0.85 fps) Pond W2: Wetland 2 Inflow Outflow Primary Secondary Tertiary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 Peak Elev=973.70' Storage=255,343 cf 169.86 cfs 12.91 cfs 8.94 cfs 0.00 cfs 4.17 cfs Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 334HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W6: Wetland 6 Inflow Area = 1.668 ac, 12.44% Impervious, Inflow Depth = 4.32" for 100y 24hr event Inflow = 10.31 cfs @ 12.09 hrs, Volume= 0.600 af Outflow = 4.25 cfs @ 12.33 hrs, Volume= 0.344 af, Atten= 59%, Lag= 13.9 min Primary = 4.25 cfs @ 12.33 hrs, Volume= 0.344 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,001.10' @ 12.33 hrs Surf.Area= 10,461 sf Storage= 12,189 cf Plug-Flow detention time= 115.0 min calculated for 0.344 af (57% of inflow) Center-of-Mass det. time= 55.8 min ( 836.1 - 780.3 ) Volume Invert Avail.Storage Storage Description #1 999.00' 16,680 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 999.00 2,453 0 0 999.50 3,157 1,403 1,403 1,000.00 5,185 2,086 3,488 1,000.50 7,715 3,225 6,713 1,001.00 10,073 4,447 11,160 1,001.50 12,007 5,520 16,680 Device Routing Invert Outlet Devices #1 Primary 1,001.00'50.0' long x 25.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=4.25 cfs @ 12.33 hrs HW=1,001.10' TW=999.87' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 4.25 cfs @ 0.85 fps) Bluffs at Lake Lucy Existing MN-RPBCWD_v1_Atlas14 24-hr100y_S1 100y 24hr Rainfall=7.41"BluffsLL_ExistingConditio Printed 9/23/2020Prepared by AE2S Page 335HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W6: Wetland 6 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=1.668 ac Peak Elev=1,001.10' Storage=12,189 cf 10.31 cfs 4.25 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 336HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Time span=0.00-250.00 hrs, dt=0.002 hrs, 125001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Sim-Route method - Pond routing by Sim-Route method Runoff Area=38.561 ac 45.60% Impervious Runoff Depth=5.45"Subcatchment 300S: 300 Flow Length=1,575' Slope=0.0350 '/' Tc=20.7 min CN=WQ Runoff=6.17 cfs 17.527 af Runoff Area=5.606 ac 29.33% Impervious Runoff Depth=4.92"Subcatchment 301S: 301 Flow Length=275' Slope=0.1030 '/' Tc=3.5 min CN=WQ Runoff=0.84 cfs 2.298 af Runoff Area=2.200 ac 77.27% Impervious Runoff Depth=6.34"Subcatchment 400S: Proposed CR 117 Tc=20.0 min CN=WQ Runoff=0.39 cfs 1.162 af Runoff Area=2.600 ac 17.79% Impervious Runoff Depth=4.55"Subcatchment 401S: 401 Flow Length=500' Slope=0.0500 '/' Tc=8.9 min CN=WQ Runoff=0.37 cfs 0.986 af Runoff Area=1.766 ac 29.44% Impervious Runoff Depth=5.01"Subcatchment 500S: 500 Flow Length=510' Slope=0.0400 '/' Tc=9.0 min CN=WQ Runoff=0.27 cfs 0.737 af Runoff Area=0.529 ac 14.88% Impervious Runoff Depth=4.44"Subcatchment 600S: 600 Flow Length=495' Slope=0.0400 '/' Tc=10.2 min CN=WQ Runoff=0.07 cfs 0.196 af Runoff Area=8.313 ac 0.56% Impervious Runoff Depth=3.92"Subcatchment 700S: 700 Flow Length=500' Slope=0.0900 '/' Tc=7.9 min CN=WQ Runoff=1.06 cfs 2.712 af Runoff Area=0.636 ac 16.77% Impervious Runoff Depth=4.48"Subcatchment 701S: 701 Flow Length=255' Slope=0.0400 '/' Tc=6.0 min CN=WQ Runoff=0.09 cfs 0.238 af Runoff Area=1.094 ac 15.23% Impervious Runoff Depth=4.49"Subcatchment 800S: 800 Flow Length=355' Slope=0.0400 '/' Tc=7.8 min CN=WQ Runoff=0.15 cfs 0.409 af Runoff Area=1.215 ac 34.66% Impervious Runoff Depth=5.17"Subcatchment 900S: 900 Flow Length=470' Slope=0.0300 '/' Tc=9.4 min CN=WQ Runoff=0.19 cfs 0.523 af Runoff Area=0.517 ac 0.00% Impervious Runoff Depth=4.00"Subcatchment AS: A Flow Length=250' Slope=0.0480 '/' Tc=6.0 min CN=WQ Runoff=0.07 cfs 0.172 af Runoff Area=0.520 ac 0.00% Impervious Runoff Depth=4.77"Subcatchment BLL_EX112: BLL_EX112 Tc=15.0 min CN=79 Runoff=0.08 cfs 0.207 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=3.79"Subcatchment BLL_EX113: BLL_EX113 Flow Length=180' Slope=0.0830 '/' Tc=20.5 min CN=70 Runoff=0.00 cfs 0.009 af Runoff Area=0.310 ac 0.00% Impervious Runoff Depth=4.77"Subcatchment BLL_EX206: BLL_EX206 Tc=15.0 min CN=79 Runoff=0.05 cfs 0.123 af Runoff Area=0.230 ac 0.00% Impervious Runoff Depth=4.77"Subcatchment BLL_EX303: BLL_EX303 Flow Length=800' Tc=46.2 min CN=79 Runoff=0.03 cfs 0.091 af Runoff Area=2.850 ac 16.84% Impervious Runoff Depth=4.62"Subcatchment BLL_EX304: BLL_EX304 Flow Length=300' Slope=0.1660 '/' Tc=9.5 min CN=WQ Runoff=0.41 cfs 1.098 af Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 337HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=0.310 ac 67.74% Impervious Runoff Depth=6.08"Subcatchment BLL_EX501: BLL_EX501 Tc=15.0 min CN=WQ Runoff=0.05 cfs 0.157 af Runoff Area=0.270 ac 62.96% Impervious Runoff Depth=5.94"Subcatchment BLL_EX502: BLL_EX502 Tc=15.0 min CN=WQ Runoff=0.05 cfs 0.134 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=4.22"Subcatchment BLL_EX503: BLL_EX503 Tc=15.0 min CN=74 Runoff=0.00 cfs 0.011 af Runoff Area=1.030 ac 15.53% Impervious Runoff Depth=4.64"Subcatchment BLL_EX504: BLL_EX504 Tc=15.0 min CN=WQ Runoff=0.15 cfs 0.399 af Runoff Area=7.420 ac 0.00% Impervious Runoff Depth=4.66"Subcatchment LU 10-1: LU 10-1 Tc=6.0 min CN=78 Runoff=1.11 cfs 2.879 af Runoff Area=79.621 ac 0.00% Impervious Runoff Depth=4.44"Subcatchment LU 2-1: LU 2-1 Tc=52.0 min CN=76 Runoff=11.11 cfs 29.432 af Runoff Area=9.880 ac 0.00% Impervious Runoff Depth=4.11"Subcatchment LU 2-10: LU 2-10 Tc=6.0 min CN=73 Runoff=1.32 cfs 3.382 af Runoff Area=21.970 ac 0.00% Impervious Runoff Depth=4.33"Subcatchment LU 2-11: LU 2-11 Tc=12.0 min CN=75 Runoff=3.06 cfs 7.920 af Runoff Area=9.720 ac 0.00% Impervious Runoff Depth=4.00"Subcatchment LU 2-12: LU 2-12 Tc=6.0 min CN=72 Runoff=1.26 cfs 3.240 af Runoff Area=15.390 ac 0.00% Impervious Runoff Depth=4.00"Subcatchment LU 2-13: LU 2-13 Tc=7.0 min CN=72 Runoff=2.00 cfs 5.130 af Runoff Area=25.920 ac 0.00% Impervious Runoff Depth=3.89"Subcatchment LU 2-14: LU 2-14 Tc=12.0 min CN=71 Runoff=3.27 cfs 8.408 af Runoff Area=4.310 ac 0.00% Impervious Runoff Depth=4.00"Subcatchment LU 2-15: LU 2-15 Tc=4.0 min CN=72 Runoff=0.56 cfs 1.437 af Runoff Area=2.560 ac 0.00% Impervious Runoff Depth=4.22"Subcatchment LU 2-16: LU 2-16 Tc=4.0 min CN=74 Runoff=0.35 cfs 0.900 af Runoff Area=8.180 ac 0.00% Impervious Runoff Depth=4.55"Subcatchment LU 2-18: LU 2-18 Tc=7.0 min CN=77 Runoff=1.20 cfs 3.099 af Runoff Area=11.910 ac 0.00% Impervious Runoff Depth=4.22"Subcatchment LU 2-2: LU 2-2 Tc=7.0 min CN=74 Runoff=1.63 cfs 4.185 af Runoff Area=47.530 ac 0.00% Impervious Runoff Depth=4.11"Subcatchment LU 2-3: LU 2-3 Tc=17.0 min CN=73 Runoff=6.30 cfs 16.272 af Runoff Area=12.300 ac 0.00% Impervious Runoff Depth=4.77"Subcatchment LU 2-4: LU 2-4 Tc=8.0 min CN=79 Runoff=1.87 cfs 4.887 af Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 338HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Runoff Area=9.150 ac 0.00% Impervious Runoff Depth=4.66"Subcatchment LU 2-5: LU 2-5 Tc=7.0 min CN=78 Runoff=1.37 cfs 3.551 af Runoff Area=8.904 ac 0.00% Impervious Runoff Depth=4.55"Subcatchment LU 2-7: LU 2-7 Tc=7.0 min CN=77 Runoff=1.30 cfs 3.373 af Runoff Area=5.830 ac 0.00% Impervious Runoff Depth=4.11"Subcatchment LU 2-8: LU 2-8 Tc=5.0 min CN=73 Runoff=0.78 cfs 1.996 af Runoff Area=11.210 ac 0.00% Impervious Runoff Depth=3.89"Subcatchment LU 2-9: LU 2-9 Tc=7.0 min CN=71 Runoff=1.42 cfs 3.636 af Runoff Area=5.464 ac 5.19% Impervious Runoff Depth=4.23"Subcatchment W11S: W11 Flow Length=650' Slope=0.0380 '/' Tc=13.8 min CN=WQ Runoff=0.74 cfs 1.927 af Runoff Area=0.734 ac 6.42% Impervious Runoff Depth=4.22"Subcatchment W12S: W12 Flow Length=130' Slope=0.1200 '/' Tc=2.1 min CN=WQ Runoff=0.10 cfs 0.258 af Runoff Area=1.729 ac 6.61% Impervious Runoff Depth=4.34"Subcatchment W13S: W13 Flow Length=715' Slope=0.0900 '/' Tc=9.4 min CN=WQ Runoff=0.24 cfs 0.625 af Runoff Area=2.452 ac 13.89% Impervious Runoff Depth=4.48"Subcatchment W14S: W14 Flow Length=715' Slope=0.0900 '/' Tc=9.1 min CN=WQ Runoff=0.34 cfs 0.916 af Runoff Area=21.327 ac 0.14% Impervious Runoff Depth=3.85"Subcatchment W1nS: W1n Flow Length=1,350' Slope=0.1200 '/' Tc=15.1 min CN=WQ Runoff=2.66 cfs 6.837 af Runoff Area=3.189 ac 3.48% Impervious Runoff Depth=3.94"Subcatchment W2S: W2 Flow Length=725' Slope=0.0690 '/' Tc=12.1 min CN=WQ Runoff=0.40 cfs 1.048 af Runoff Area=0.575 ac 7.12% Impervious Runoff Depth=4.19"Subcatchment W6S: W6 Flow Length=200' Slope=0.0800 '/' Tc=3.7 min CN=WQ Runoff=0.08 cfs 0.201 af Runoff Area=5.297 ac 0.00% Impervious Runoff Depth=3.80"Subcatchment WLS: WL Flow Length=300' Slope=0.2500 '/' Tc=3.2 min CN=WQ Runoff=0.66 cfs 1.679 af Avg. Flow Depth=0.83' Max Vel=4.61 fps Inflow=6.18 cfs 33.723 afReach Pipe from W2 to W1: Pipe from 27.0" Round Pipe n=0.025 L=65.8' S=0.0172 '/' Capacity=21.10 cfs Outflow=6.18 cfs 33.723 af Peak Elev=967.59' Storage=481,546 cf Inflow=7.77 cfs 21.866 afPond 300P: Pond with IESF Primary=3.91 cfs 19.917 af Secondary=0.00 cfs 0.000 af Outflow=3.91 cfs 19.917 af Peak Elev=984.59' Storage=46,566 cf Inflow=0.76 cfs 2.148 afPond 400P: County pond with IESF Outflow=0.73 cfs 2.018 af Peak Elev=970.48' Storage=0.193 af Inflow=3.48 cfs 24.420 afPond 404P: P-LU 2-2 Primary=3.04 cfs 24.413 af Secondary=0.00 cfs 0.000 af Outflow=3.04 cfs 24.413 af Peak Elev=984.76' Inflow=0.76 cfs 1.865 afPond 490: CB inlet Primary=0.76 cfs 1.865 af Secondary=0.00 cfs 0.000 af Outflow=0.76 cfs 1.865 af Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 339HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=981.04' Inflow=0.00 cfs 0.000 afPond 491P: CB inlet Outflow=0.00 cfs 0.000 af Peak Elev=985.31' Storage=2,828 cf Inflow=0.27 cfs 0.737 afPond 500P: IESF Outflow=0.27 cfs 0.694 af Peak Elev=999.52' Storage=1,258 cf Inflow=0.07 cfs 0.406 afPond 600P: rain garden Discarded=0.01 cfs 0.140 af Primary=0.06 cfs 0.249 af Outflow=0.07 cfs 0.389 af Peak Elev=1,001.53' Storage=1,122 cf Inflow=0.15 cfs 0.409 afPond 800P: rain garden Discarded=0.01 cfs 0.126 af Primary=0.15 cfs 0.266 af Outflow=0.15 cfs 0.392 af Peak Elev=992.04' Storage=2,201 cf Inflow=0.19 cfs 0.523 afPond 900P: IESF Outflow=0.19 cfs 0.485 af Peak Elev=988.36' Inflow=1.54 cfs 4.253 afPond CB-9: EX CB-9 24.0" Round Culvert n=0.025 L=94.0' S=0.0755 '/' Outflow=1.54 cfs 4.253 af Inflow=25.14 cfs 112.426 afPond LUCY: LAKE LUCY Primary=25.14 cfs 112.426 af Peak Elev=957.58' Storage=164,565 cf Inflow=26.34 cfs 99.883 afPond P-LU 2-1: P-LU 2-1 Outflow=24.18 cfs 109.776 af Peak Elev=972.61' Storage=0.207 af Inflow=1.32 cfs 3.382 afPond P-LU 2-10: P-LU 2-10 Outflow=1.30 cfs 3.216 af Peak Elev=972.95' Storage=11.086 af Inflow=8.33 cfs 23.148 afPond P-LU 2-11: P-LU 2-11 15.0" Round Culvert n=0.011 L=114.0' S=0.0004 '/' Outflow=1.68 cfs 13.900 af Peak Elev=978.41' Storage=1.134 af Inflow=1.26 cfs 3.240 afPond P-LU 2-12: P-LU 2-12 Primary=0.85 cfs 2.209 af Secondary=0.00 cfs 0.000 af Outflow=0.85 cfs 2.209 af Peak Elev=990.18' Storage=0.654 af Inflow=2.00 cfs 5.130 afPond P-LU 2-13: P-LU 2-13 24.0" Round Culvert n=0.011 L=110.0' S=0.0600 '/' Outflow=1.93 cfs 4.611 af Peak Elev=993.84' Storage=17.904 af Inflow=7.04 cfs 17.904 afPond P-LU 2-3: P-LU 2-3 (LAKE Outflow=0.00 cfs 0.000 af Peak Elev=974.63' Storage=0.414 af Inflow=2.12 cfs 5.587 afPond P-LU 2-4: P-LU 2-4 Primary=2.09 cfs 5.263 af Secondary=0.00 cfs 0.000 af Outflow=2.09 cfs 5.263 af Peak Elev=965.34' Storage=0.665 af Inflow=1.37 cfs 3.551 afPond P-LU 2-5: P-LU 2-5 Outflow=1.16 cfs 3.568 af Peak Elev=982.27' Storage=387,356 cf Inflow=3.26 cfs 8.893 afPond P-LU 2-6: Wetland 11 15.0" Round Culvert n=0.013 L=50.0' S=0.0104 '/' Outflow=0.00 cfs 0.000 af Peak Elev=995.86' Storage=23,138 cf Inflow=1.30 cfs 3.373 afPond P-LU 2-7: P-LU 2-7 12.0" Round Culvert n=0.013 L=60.8' S=0.0197 '/' Outflow=1.25 cfs 3.366 af Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 340HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Peak Elev=996.44' Storage=0.425 af Inflow=0.78 cfs 1.996 afPond P-LU 2-8: P-LU 2-8 Primary=0.75 cfs 1.632 af Secondary=0.00 cfs 0.000 af Outflow=0.75 cfs 1.632 af Peak Elev=977.26' Storage=2.219 af Inflow=1.42 cfs 3.636 afPond P-LU 2-9: P-LU 2-9 Outflow=0.21 cfs 1.587 af Peak Elev=994.34' Storage=4,364 cf Inflow=0.35 cfs 0.900 afPond P-LU-2-16: P-LU-2-16 12.0" Round Culvert n=0.013 L=93.0' S=0.0669 '/' Outflow=0.30 cfs 0.887 af Peak Elev=963.65' Storage=0.497 af Inflow=1.18 cfs 3.052 afPond P-LU10-1: P-LU 10-1 Primary=1.13 cfs 2.651 af Secondary=0.00 cfs 0.000 af Outflow=1.13 cfs 2.651 af Peak Elev=994.14' Storage=0.095 af Inflow=0.10 cfs 0.258 afPond W12: Wetland 12 15.0" Round Culvert n=0.013 L=45.0' S=0.0040 '/' Outflow=0.06 cfs 0.176 af Peak Elev=993.04' Storage=5,986 cf Inflow=0.24 cfs 0.625 afPond W13: Wetland 13 Outflow=0.23 cfs 0.498 af Peak Elev=987.12' Storage=1,955 cf Inflow=0.76 cfs 1.899 afPond W14: Wetland 14 Outflow=0.76 cfs 1.865 af Peak Elev=970.44' Storage=6,485 cf Inflow=6.72 cfs 33.822 afPond W2: Wetland 2 Primary=6.18 cfs 33.723 af Secondary=0.00 cfs 0.000 af Tertiary=0.04 cfs 0.094 af Outflow=6.18 cfs 33.818 af Peak Elev=1,001.01' Storage=11,212 cf Inflow=0.22 cfs 0.466 afPond W6: Wetland 6 Outflow=0.05 cfs 0.210 af Total Runoff Area = 401.189 ac Runoff Volume = 146.407 af Average Runoff Depth = 4.38" 93.84% Pervious = 376.470 ac 6.16% Impervious = 24.719 ac Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 341HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 300S: 300 Runoff = 6.17 cfs @ 121.42 hrs, Volume= 17.527 af, Depth= 5.45" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.755 70 Woods Good, HSG C * 0.637 71 Meadow, HSG C * 19.586 74 75% Grass cover Good, HSG C * 17.584 98 Impervious, HSG C 38.561 Weighted Average 20.977 54.40% Pervious Area 17.584 45.60% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.7 1,575 0.0350 1.27 Lag/CN Method, Subcatchment 300S: 300 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)6 5 4 3 2 1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=38.561 ac Runoff Volume=17.527 af Runoff Depth=5.45" Flow Length=1,575' Slope=0.0350 '/' Tc=20.7 min CN=WQ 6.17 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 342HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 301S: 301 Runoff = 0.84 cfs @ 121.23 hrs, Volume= 2.298 af, Depth= 4.92" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.991 98 Water Surface, HSG C * 1.761 71 Meadow, HSG C * 2.200 74 75% Grass cover Good, HSG C * 0.654 98 Impervious, HSG C 5.606 Weighted Average 3.961 70.67% Pervious Area 1.644 29.33% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.5 275 0.1030 1.30 Lag/CN Method, Subcatchment 301S: 301 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.9 0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=5.606 ac Runoff Volume=2.298 af Runoff Depth=4.92" Flow Length=275' Slope=0.1030 '/' Tc=3.5 min CN=WQ 0.84 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 343HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 400S: Proposed CR 117 Runoff = 0.39 cfs @ 121.40 hrs, Volume= 1.162 af, Depth= 6.34" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description 1.700 98 Paved roads w/curbs & sewers, HSG C 0.500 74 >75% Grass cover, Good, HSG C 2.200 Weighted Average 0.500 22.73% Pervious Area 1.700 77.27% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.0 Direct Entry, Subcatchment 400S: Proposed CR 117 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=2.200 ac Runoff Volume=1.162 af Runoff Depth=6.34" Tc=20.0 min CN=WQ 0.39 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 344HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 401S: 401 Runoff = 0.37 cfs @ 121.29 hrs, Volume= 0.986 af, Depth= 4.55" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.243 70 Woods Good, HSG C * 0.186 98 Water Surface, HSG C * 0.897 71 Meadow, HSG C * 0.997 74 75% Grass cover Good, HSG C * 0.276 98 Impervious, HSG C 2.600 Weighted Average 2.138 82.21% Pervious Area 0.462 17.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.9 500 0.0500 0.93 Lag/CN Method, Subcatchment 401S: 401 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=2.600 ac Runoff Volume=0.986 af Runoff Depth=4.55" Flow Length=500' Slope=0.0500 '/' Tc=8.9 min CN=WQ 0.37 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 345HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 500S: 500 Runoff = 0.27 cfs @ 121.29 hrs, Volume= 0.737 af, Depth= 5.01" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.097 71 Meadow, HSG C * 1.149 74 75% Grass cover Good, HSG C * 0.520 98 Impervious, HSG C 1.766 Weighted Average 1.246 70.56% Pervious Area 0.520 29.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.0 510 0.0400 0.95 Lag/CN Method, Subcatchment 500S: 500 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=1.766 ac Runoff Volume=0.737 af Runoff Depth=5.01" Flow Length=510' Slope=0.0400 '/' Tc=9.0 min CN=WQ 0.27 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 346HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 600S: 600 Runoff = 0.07 cfs @ 121.32 hrs, Volume= 0.196 af, Depth= 4.44" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.066 70 Woods Good, HSG C * 0.221 71 Meadow, HSG C * 0.163 74 75% Grass cover Good, HSG C * 0.079 98 Impervious, HSG C 0.529 Weighted Average 0.450 85.12% Pervious Area 0.079 14.88% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.2 495 0.0400 0.81 Lag/CN Method, Subcatchment 600S: 600 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.529 ac Runoff Volume=0.196 af Runoff Depth=4.44" Flow Length=495' Slope=0.0400 '/' Tc=10.2 min CN=WQ 0.07 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 347HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 700S: 700 Runoff = 1.06 cfs @ 121.28 hrs, Volume= 2.712 af, Depth= 3.92" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 2.897 70 Woods Good, HSG C * 4.268 71 Meadow, HSG C * 1.101 74 75% Grass cover Good, HSG C * 0.047 98 Impervious, HSG C 8.313 Weighted Average 8.266 99.44% Pervious Area 0.047 0.56% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.9 500 0.0900 1.05 Lag/CN Method, Subcatchment 700S: 700 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=8.313 ac Runoff Volume=2.712 af Runoff Depth=3.92" Flow Length=500' Slope=0.0900 '/' Tc=7.9 min CN=WQ 1.06 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 348HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 701S: 701 Runoff = 0.09 cfs @ 121.26 hrs, Volume= 0.238 af, Depth= 4.48" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.380 71 Meadow, HSG C * 0.149 74 75% Grass cover Good, HSG C * 0.107 98 Impervious, HSG C 0.636 Weighted Average 0.529 83.23% Pervious Area 0.107 16.77% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 255 0.0400 0.71 Lag/CN Method, Subcatchment 701S: 701 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.095 0.09 0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.636 ac Runoff Volume=0.238 af Runoff Depth=4.48" Flow Length=255' Slope=0.0400 '/' Tc=6.0 min CN=WQ 0.09 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 349HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 800S: 800 Runoff = 0.15 cfs @ 121.29 hrs, Volume= 0.409 af, Depth= 4.49" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.484 71 Meadow, HSG C * 0.443 74 75% Grass cover Good, HSG C * 0.167 98 Impervious, HSG C 1.094 Weighted Average 0.927 84.77% Pervious Area 0.167 15.23% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.8 355 0.0400 0.76 Lag/CN Method, Subcatchment 800S: 800 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=1.094 ac Runoff Volume=0.409 af Runoff Depth=4.49" Flow Length=355' Slope=0.0400 '/' Tc=7.8 min CN=WQ 0.15 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 350HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment 900S: 900 Runoff = 0.19 cfs @ 121.29 hrs, Volume= 0.523 af, Depth= 5.17" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.000 70 Woods Good, HSG C * 0.794 74 75% Grass cover Good, HSG C * 0.421 98 Impervious, HSG C 1.215 Weighted Average 0.794 65.34% Pervious Area 0.421 34.66% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 470 0.0300 0.83 Lag/CN Method, Subcatchment 900S: 900 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=1.215 ac Runoff Volume=0.523 af Runoff Depth=5.17" Flow Length=470' Slope=0.0300 '/' Tc=9.4 min CN=WQ 0.19 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 351HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment AS: A Runoff = 0.07 cfs @ 121.26 hrs, Volume= 0.172 af, Depth= 4.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.262 70 Woods, Good, HSG C * 0.255 74 75% Grass cover Good, HSG C 0.517 Weighted Average 0.517 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 250 0.0480 0.69 Lag/CN Method, Subcatchment AS: A Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.517 ac Runoff Volume=0.172 af Runoff Depth=4.00" Flow Length=250' Slope=0.0480 '/' Tc=6.0 min CN=WQ 0.07 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 352HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX112: BLL_EX112 Runoff = 0.08 cfs @ 121.38 hrs, Volume= 0.207 af, Depth= 4.77" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.520 79 CN from Previous Model 0.520 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX112: BLL_EX112 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.520 ac Runoff Volume=0.207 af Runoff Depth=4.77" Tc=15.0 min CN=79 0.08 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 353HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX113: BLL_EX113 Runoff = 0.00 cfs @ 121.47 hrs, Volume= 0.009 af, Depth= 3.79" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description 0.030 70 Woods, Good, HSG C 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.5 180 0.0830 0.15 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" Subcatchment BLL_EX113: BLL_EX113 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.004 0.004 0.004 0.003 0.003 0.003 0.003 0.003 0.002 0.002 0.002 0.002 0.002 0.001 0.001 0.001 0.001 0.001 0.000 0.000 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.030 ac Runoff Volume=0.009 af Runoff Depth=3.79" Flow Length=180' Slope=0.0830 '/' Tc=20.5 min CN=70 0.00 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 354HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX206: BLL_EX206 Runoff = 0.05 cfs @ 121.38 hrs, Volume= 0.123 af, Depth= 4.77" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.310 79 CN from Previous Model 0.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX206: BLL_EX206 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.052 0.05 0.048 0.046 0.044 0.042 0.04 0.038 0.036 0.034 0.032 0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.310 ac Runoff Volume=0.123 af Runoff Depth=4.77" Tc=15.0 min CN=79 0.05 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 355HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX303: BLL_EX303 Runoff = 0.03 cfs @ 121.71 hrs, Volume= 0.091 af, Depth= 4.77" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.230 79 CN from Previous Model 0.230 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 41.4 300 0.0400 0.12 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.87" 4.8 500 0.1190 1.72 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 46.2 800 Total Subcatchment BLL_EX303: BLL_EX303 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.038 0.036 0.034 0.032 0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.230 ac Runoff Volume=0.091 af Runoff Depth=4.77" Flow Length=800' Tc=46.2 min CN=79 0.03 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 356HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX304: BLL_EX304 Runoff = 0.41 cfs @ 121.29 hrs, Volume= 1.098 af, Depth= 4.62" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.080 98 Existing County Road * 0.400 98 Existing homes * 2.000 74 Existing lawn 0.370 70 Woods, Good, HSG C 2.850 Weighted Average 2.370 83.16% Pervious Area 0.480 16.84% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.5 300 0.1660 0.52 Sheet Flow, Range n= 0.130 P2= 2.87" Subcatchment BLL_EX304: BLL_EX304 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=2.850 ac Runoff Volume=1.098 af Runoff Depth=4.62" Flow Length=300' Slope=0.1660 '/' Tc=9.5 min CN=WQ 0.41 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 357HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX501: BLL_EX501 Runoff = 0.05 cfs @ 121.35 hrs, Volume= 0.157 af, Depth= 6.08" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.100 74 Existing lawn * 0.210 98 Existing road and sidewalk 0.310 Weighted Average 0.100 32.26% Pervious Area 0.210 67.74% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX501: BLL_EX501 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.310 ac Runoff Volume=0.157 af Runoff Depth=6.08" Tc=15.0 min CN=WQ 0.05 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 358HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX502: BLL_EX502 Runoff = 0.05 cfs @ 121.35 hrs, Volume= 0.134 af, Depth= 5.94" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.100 74 Existing lawn * 0.170 98 Existing road and sidewalk 0.270 Weighted Average 0.100 37.04% Pervious Area 0.170 62.96% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX502: BLL_EX502 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.05 0.048 0.046 0.044 0.042 0.04 0.038 0.036 0.034 0.032 0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.270 ac Runoff Volume=0.134 af Runoff Depth=5.94" Tc=15.0 min CN=WQ 0.05 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 359HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX503: BLL_EX503 Runoff = 0.00 cfs @ 121.38 hrs, Volume= 0.011 af, Depth= 4.22" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.030 74 Existing lawn 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX503: BLL_EX503 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.004 0.004 0.004 0.004 0.004 0.003 0.003 0.003 0.003 0.003 0.002 0.002 0.002 0.002 0.002 0.001 0.001 0.001 0.001 0.001 0.000 0.000 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.030 ac Runoff Volume=0.011 af Runoff Depth=4.22" Tc=15.0 min CN=74 0.00 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 360HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment BLL_EX504: BLL_EX504 Runoff = 0.15 cfs @ 121.38 hrs, Volume= 0.399 af, Depth= 4.64" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.160 98 Existing homes * 0.870 74 Existing lawn 1.030 Weighted Average 0.870 84.47% Pervious Area 0.160 15.53% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment BLL_EX504: BLL_EX504 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=1.030 ac Runoff Volume=0.399 af Runoff Depth=4.64" Tc=15.0 min CN=WQ 0.15 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 361HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 10-1: LU 10-1 Runoff = 1.11 cfs @ 121.26 hrs, Volume= 2.879 af, Depth= 4.66" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 7.420 78 7.420 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 10-1: LU 10-1 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=7.420 ac Runoff Volume=2.879 af Runoff Depth=4.66" Tc=6.0 min CN=78 1.11 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 362HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-1: LU 2-1 Runoff = 11.11 cfs @ 121.85 hrs, Volume= 29.432 af, Depth= 4.44" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 79.621 76 79.621 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 52.0 Direct Entry, Subcatchment LU 2-1: LU 2-1 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=79.621 ac Runoff Volume=29.432 af Runoff Depth=4.44" Tc=52.0 min CN=76 11.11 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 363HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-10: LU 2-10 Runoff = 1.32 cfs @ 121.26 hrs, Volume= 3.382 af, Depth= 4.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 9.880 73 9.880 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 2-10: LU 2-10 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=9.880 ac Runoff Volume=3.382 af Runoff Depth=4.11" Tc=6.0 min CN=73 1.32 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 364HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-11: LU 2-11 Runoff = 3.06 cfs @ 121.35 hrs, Volume= 7.920 af, Depth= 4.33" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 21.970 75 21.970 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment LU 2-11: LU 2-11 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=21.970 ac Runoff Volume=7.920 af Runoff Depth=4.33" Tc=12.0 min CN=75 3.06 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 365HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-12: LU 2-12 Runoff = 1.26 cfs @ 121.26 hrs, Volume= 3.240 af, Depth= 4.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 9.720 72 9.720 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment LU 2-12: LU 2-12 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=9.720 ac Runoff Volume=3.240 af Runoff Depth=4.00" Tc=6.0 min CN=72 1.26 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 366HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-13: LU 2-13 Runoff = 2.00 cfs @ 121.28 hrs, Volume= 5.130 af, Depth= 4.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 15.390 72 15.390 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-13: LU 2-13 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=15.390 ac Runoff Volume=5.130 af Runoff Depth=4.00" Tc=7.0 min CN=72 2.00 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 367HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-14: LU 2-14 Runoff = 3.27 cfs @ 121.35 hrs, Volume= 8.408 af, Depth= 3.89" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 25.920 71 25.920 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment LU 2-14: LU 2-14 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=25.920 ac Runoff Volume=8.408 af Runoff Depth=3.89" Tc=12.0 min CN=71 3.27 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 368HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-15: LU 2-15 Runoff = 0.56 cfs @ 121.24 hrs, Volume= 1.437 af, Depth= 4.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 4.310 72 4.310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Subcatchment LU 2-15: LU 2-15 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=4.310 ac Runoff Volume=1.437 af Runoff Depth=4.00" Tc=4.0 min CN=72 0.56 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 369HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-16: LU 2-16 Runoff = 0.35 cfs @ 121.24 hrs, Volume= 0.900 af, Depth= 4.22" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 2.560 74 2.560 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Subcatchment LU 2-16: LU 2-16 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=2.560 ac Runoff Volume=0.900 af Runoff Depth=4.22" Tc=4.0 min CN=74 0.35 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 370HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-18: LU 2-18 Runoff = 1.20 cfs @ 121.28 hrs, Volume= 3.099 af, Depth= 4.55" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 8.180 77 8.180 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-18: LU 2-18 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=8.180 ac Runoff Volume=3.099 af Runoff Depth=4.55" Tc=7.0 min CN=77 1.20 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 371HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-2: LU 2-2 Runoff = 1.63 cfs @ 121.28 hrs, Volume= 4.185 af, Depth= 4.22" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 11.910 74 11.910 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-2: LU 2-2 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=11.910 ac Runoff Volume=4.185 af Runoff Depth=4.22" Tc=7.0 min CN=74 1.63 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 372HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-3: LU 2-3 Runoff = 6.30 cfs @ 121.40 hrs, Volume= 16.272 af, Depth= 4.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 47.530 73 47.530 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 17.0 Direct Entry, Subcatchment LU 2-3: LU 2-3 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=47.530 ac Runoff Volume=16.272 af Runoff Depth=4.11" Tc=17.0 min CN=73 6.30 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 373HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-4: LU 2-4 Runoff = 1.87 cfs @ 121.29 hrs, Volume= 4.887 af, Depth= 4.77" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 12.300 79 12.300 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment LU 2-4: LU 2-4 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=12.300 ac Runoff Volume=4.887 af Runoff Depth=4.77" Tc=8.0 min CN=79 1.87 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 374HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-5: LU 2-5 Runoff = 1.37 cfs @ 121.28 hrs, Volume= 3.551 af, Depth= 4.66" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 9.150 78 9.150 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-5: LU 2-5 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=9.150 ac Runoff Volume=3.551 af Runoff Depth=4.66" Tc=7.0 min CN=78 1.37 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 375HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-7: LU 2-7 Runoff = 1.30 cfs @ 121.28 hrs, Volume= 3.373 af, Depth= 4.55" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 8.904 77 8.904 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-7: LU 2-7 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=8.904 ac Runoff Volume=3.373 af Runoff Depth=4.55" Tc=7.0 min CN=77 1.30 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 376HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-8: LU 2-8 Runoff = 0.78 cfs @ 121.25 hrs, Volume= 1.996 af, Depth= 4.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 5.830 73 5.830 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment LU 2-8: LU 2-8 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=5.830 ac Runoff Volume=1.996 af Runoff Depth=4.11" Tc=5.0 min CN=73 0.78 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 377HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment LU 2-9: LU 2-9 Runoff = 1.42 cfs @ 121.28 hrs, Volume= 3.636 af, Depth= 3.89" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 11.210 71 11.210 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment LU 2-9: LU 2-9 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=11.210 ac Runoff Volume=3.636 af Runoff Depth=3.89" Tc=7.0 min CN=71 1.42 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 378HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W11S: W11 Runoff = 0.74 cfs @ 121.36 hrs, Volume= 1.927 af, Depth= 4.23" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 2.746 74 Wetland, HSG C * 0.481 70 Woods Good, HSG C * 1.503 71 Meadow, HSG C * 0.452 74 75% Grass cover Good, HSG C * 0.284 98 Impervious, HSG C 5.464 Weighted Average 5.181 94.81% Pervious Area 0.284 5.19% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.8 650 0.0380 0.79 Lag/CN Method, Subcatchment W11S: W11 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=5.464 ac Runoff Volume=1.927 af Runoff Depth=4.23" Flow Length=650' Slope=0.0380 '/' Tc=13.8 min CN=WQ 0.74 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 379HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W12S: W12 Runoff = 0.10 cfs @ 121.21 hrs, Volume= 0.258 af, Depth= 4.22" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.081 74 Wetland, HSG C * 0.290 70 Woods Good, HSG C * 0.316 74 75% Grass cover Good, HSG C * 0.047 98 Impervious, HSG C 0.734 Weighted Average 0.687 93.58% Pervious Area 0.047 6.42% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.1 130 0.1200 1.01 Lag/CN Method, Subcatchment W12S: W12 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.11 0.105 0.1 0.095 0.09 0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.734 ac Runoff Volume=0.258 af Runoff Depth=4.22" Flow Length=130' Slope=0.1200 '/' Tc=2.1 min CN=WQ 0.10 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 380HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W13S: W13 Runoff = 0.24 cfs @ 121.31 hrs, Volume= 0.625 af, Depth= 4.34" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.038 74 Wetland, HSG C * 0.252 70 Woods Good, HSG C * 1.325 74 75% Grass cover Good, HSG C * 0.114 98 Impervious, HSG C 1.729 Weighted Average 1.615 93.39% Pervious Area 0.114 6.61% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 715 0.0900 1.27 Lag/CN Method, Subcatchment W13S: W13 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=1.729 ac Runoff Volume=0.625 af Runoff Depth=4.34" Flow Length=715' Slope=0.0900 '/' Tc=9.4 min CN=WQ 0.24 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 381HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W14S: W14 Runoff = 0.34 cfs @ 121.30 hrs, Volume= 0.916 af, Depth= 4.48" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.084 74 Wetland, HSG C * 0.638 70 Woods Good, HSG C * 0.014 71 Meadow, HSG C * 1.375 74 75% Grass cover Good, HSG C * 0.341 98 Impervious, HSG C 2.452 Weighted Average 2.112 86.11% Pervious Area 0.341 13.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.1 715 0.0900 1.30 Lag/CN Method, Subcatchment W14S: W14 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=2.452 ac Runoff Volume=0.916 af Runoff Depth=4.48" Flow Length=715' Slope=0.0900 '/' Tc=9.1 min CN=WQ 0.34 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 382HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W1nS: W1n Runoff = 2.66 cfs @ 121.39 hrs, Volume= 6.837 af, Depth= 3.85" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 18.460 70 Woods, Good, HSG C * 2.670 74 75% Grass cover Good, HSG C * 0.167 74 County Ditch, HSG C * 0.030 98 County Road Surface, HSG C 21.327 Weighted Average 21.297 99.86% Pervious Area 0.030 0.14% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.1 1,350 0.1200 1.49 Lag/CN Method, Subcatchment W1nS: W1n Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=21.327 ac Runoff Volume=6.837 af Runoff Depth=3.85" Flow Length=1,350' Slope=0.1200 '/' Tc=15.1 min CN=WQ 2.66 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 383HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W2S: W2 Runoff = 0.40 cfs @ 121.34 hrs, Volume= 1.048 af, Depth= 3.94" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.182 74 Wetland, HSG C * 2.735 70 Woods, Good, HSG C * 0.059 74 75% Grass cover Good, HSG C * 0.102 74 County Ditch, HSG C * 0.073 98 County Road Surface, HSG C * 0.038 98 Existing road and sidewalk 3.189 Weighted Average 3.078 96.52% Pervious Area 0.111 3.48% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.1 725 0.0690 0.99 Lag/CN Method, Subcatchment W2S: W2 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=3.189 ac Runoff Volume=1.048 af Runoff Depth=3.94" Flow Length=725' Slope=0.0690 '/' Tc=12.1 min CN=WQ 0.40 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 384HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment W6S: W6 Runoff = 0.08 cfs @ 121.23 hrs, Volume= 0.201 af, Depth= 4.19" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 0.061 74 Wetland, HSG C * 0.392 71 Meadow, HSG C * 0.080 74 75% Grass cover Good, HSG C * 0.041 98 Impervious, HSG C 0.575 Weighted Average 0.534 92.88% Pervious Area 0.041 7.12% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.7 200 0.0800 0.90 Lag/CN Method, Subcatchment W6S: W6 Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=0.575 ac Runoff Volume=0.201 af Runoff Depth=4.19" Flow Length=200' Slope=0.0800 '/' Tc=3.7 min CN=WQ 0.08 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 385HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment WLS: WL Runoff = 0.66 cfs @ 121.23 hrs, Volume= 1.679 af, Depth= 3.80" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Area (ac) CN Description * 5.078 70 Woods, Good, HSG C * 0.219 74 75% Grass cover Good, HSG C 5.297 Weighted Average 5.297 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.2 300 0.2500 1.54 Lag/CN Method, Subcatchment WLS: WL Runoff Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20" Runoff Area=5.297 ac Runoff Volume=1.679 af Runoff Depth=3.80" Flow Length=300' Slope=0.2500 '/' Tc=3.2 min CN=WQ 0.66 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 386HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Reach Pipe from W2 to W1: Pipe from Wetland 2 to Wetland 1 [52] Hint: Inlet/Outlet conditions not evaluated Inflow = 6.18 cfs @ 122.52 hrs, Volume= 33.723 af Outflow = 6.18 cfs @ 122.53 hrs, Volume= 33.723 af, Atten= 0%, Lag= 0.2 min Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Max. Velocity= 4.61 fps, Min. Travel Time= 0.2 min Avg. Velocity = 2.66 fps, Avg. Travel Time= 0.4 min Peak Storage= 88 cf @ 122.53 hrs Average Depth at Peak Storage= 0.83' Bank-Full Depth= 2.25' Flow Area= 4.0 sf, Capacity= 21.10 cfs 27.0" Round Pipe n= 0.025 Length= 65.8' Slope= 0.0172 '/' Inlet Invert= 965.96', Outlet Invert= 964.83' Reach Pipe from W2 to W1: Pipe from Wetland 2 to Wetland 1 Inflow Outflow Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)6 5 4 3 2 1 0 Avg. Flow Depth=0.83' Max Vel=4.61 fps 27.0" Round Pipe n=0.025 L=65.8' S=0.0172 '/' Capacity=21.10 cfs 6.18 cfs 6.18 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 387HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 300P: Pond with IESF Inflow Area = 73.792 ac, 31.33% Impervious, Inflow Depth > 3.56" for Snowmelt_10d_100yr event Inflow = 7.77 cfs @ 121.42 hrs, Volume= 21.866 af Outflow = 3.91 cfs @ 125.61 hrs, Volume= 19.917 af, Atten= 50%, Lag= 251.7 min Primary = 3.91 cfs @ 125.61 hrs, Volume= 19.917 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 965.00' Surf.Area= 59,664 sf Storage= 254,284 cf Peak Elev= 967.59' @ 125.61 hrs Surf.Area= 94,738 sf Storage= 481,546 cf (227,262 cf above start) Plug-Flow detention time= 3,880.3 min calculated for 14.079 af (64% of inflow) Center-of-Mass det. time= 748.2 min ( 8,782.2 - 8,033.9 ) Volume Invert Avail.Storage Storage Description #1 955.00' 779,932 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 955.00 7,650 0 0 956.00 11,005 9,328 9,328 958.00 16,690 27,695 37,023 960.00 23,225 39,915 76,938 962.00 31,363 54,588 131,526 963.00 36,141 33,752 165,278 964.00 41,104 38,623 203,900 965.00 59,664 50,384 254,284 965.01 63,414 615 254,899 965.02 80,995 722 255,621 965.95 85,712 77,519 333,140 970.50 110,680 446,792 779,932 Device Routing Invert Outlet Devices #1 Primary 960.22'42.0" Round RCP_Round 42" L= 43.0' Ke= 0.500 Inlet / Outlet Invert= 960.22' / 960.00' S= 0.0051 '/' Cc= 0.900 n= 0.013, Flow Area= 9.62 sf #2 Device 1 965.95'Custom Weir, Cv= 2.62 (C= 3.28) Head (feet) 0.00 2.35 2.35 5.00 Width (feet) 0.50 0.50 7.00 7.00 #3 Device 2 960.00'42.0" Round RCP_Round 42" L= 10.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 960.00' / 960.00' S= 0.0000 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 9.62 sf #4 Device 1 963.00'6.0" Vert. 2 - 6" Draintile Outlet X 2.00 C= 0.600 #5 Device 4 965.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 965.00' - 965.01' Excluded Surface area = 59,664 sf #6 Secondary 960.22'36.0" Round RCP_Round 36" L= 43.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 960.22' / 960.00' S= 0.0051 '/' Cc= 0.900 Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 388HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf #7 Device 6 968.30'5.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Primary OutFlow Max=3.91 cfs @ 125.61 hrs HW=967.59' TW=957.52' (Dynamic Tailwater) 1=RCP_Round 42" (Passes 3.91 cfs of 109.87 cfs potential flow) 2=Custom Weir (Weir Controls 3.45 cfs @ 4.20 fps) 3=RCP_Round 42" (Passes 3.45 cfs of 81.02 cfs potential flow) 4=2 - 6" Draintile Outlet (Passes 0.46 cfs of 3.94 cfs potential flow) 5=Iron Enhanced Filtration (Exfiltration Controls 0.46 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=965.00' TW=957.00' (Dynamic Tailwater) 6=RCP_Round 36" (Passes 0.00 cfs of 59.59 cfs potential flow) 7=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) Pond 300P: Pond with IESF Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=73.792 ac Peak Elev=967.59' Storage=481,546 cf 7.77 cfs 3.91 cfs 3.91 cfs 0.00 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 389HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 400P: County pond with IESF Inflow Area = 4.800 ac, 45.05% Impervious, Inflow Depth = 5.37" for Snowmelt_10d_100yr event Inflow = 0.76 cfs @ 121.31 hrs, Volume= 2.148 af Outflow = 0.73 cfs @ 121.69 hrs, Volume= 2.018 af, Atten= 3%, Lag= 22.9 min Primary = 0.73 cfs @ 121.69 hrs, Volume= 2.018 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 984.00' Surf.Area= 10,824 sf Storage= 37,248 cf Peak Elev= 984.59' @ 121.69 hrs Surf.Area= 16,502 sf Storage= 46,566 cf (9,318 cf above start) Plug-Flow detention time= 4,294.9 min calculated for 1.163 af (54% of inflow) Center-of-Mass det. time= 391.0 min ( 8,321.1 - 7,930.1 ) Volume Invert Avail.Storage Storage Description #1 974.00' 185,067 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 974.00 485 0 0 975.00 868 677 677 976.00 1,334 1,101 1,778 978.00 2,522 3,856 5,634 980.00 4,030 6,552 12,186 982.00 5,839 9,869 22,055 983.00 6,862 6,351 28,405 984.00 10,824 8,843 37,248 984.01 11,174 110 37,358 984.02 15,262 132 37,490 984.45 16,243 6,774 44,264 985.00 17,254 9,212 53,475 986.00 20,050 18,652 72,127 987.00 22,870 21,460 93,587 991.00 22,870 91,480 185,067 Device Routing Invert Outlet Devices #1 Primary 982.00'15.0" Round RCP_Round 15" L= 29.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 982.00' / 982.00' S= 0.0000 '/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #2 Device 1 984.45'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 3.0' Crest Height #3 Device 2 982.00'15.0" Round RCP_Round 15" L= 22.0' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 981.75' / 982.00' S= -0.0114 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #4 Device 1 982.00'6.0" Vert. Draintile Outlet C= 0.600 #5 Device 4 984.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 984.00' - 984.01' Excluded Surface area = 10,824 sf Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 390HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Primary OutFlow Max=0.73 cfs @ 121.69 hrs HW=984.59' TW=980.25' (Dynamic Tailwater) 1=RCP_Round 15" (Passes 0.73 cfs of 8.32 cfs potential flow) 2=Sharp-Crested Rectangular Weir (Weir Controls 0.69 cfs @ 1.23 fps) 3=RCP_Round 15" (Passes 0.69 cfs of 2.22 cfs potential flow) 4=Draintile Outlet (Passes 0.04 cfs of 1.45 cfs potential flow) 5=Iron Enhanced Filtration (Exfiltration Controls 0.04 cfs) Pond 400P: County pond with IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=4.800 ac Peak Elev=984.59' Storage=46,566 cf 0.76 cfs 0.73 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 391HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 404P: P-LU 2-2 [86] Warning: Oscillations may require smaller dt (severity=195) Inflow = 3.48 cfs @ 121.29 hrs, Volume= 24.420 af Outflow = 3.04 cfs @ 121.33 hrs, Volume= 24.413 af, Atten= 13%, Lag= 2.2 min Primary = 3.04 cfs @ 121.33 hrs, Volume= 24.413 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 969.90' Surf.Area= 0.094 ac Storage= 0.085 af Peak Elev= 970.48' @ 122.52 hrs Surf.Area= 0.307 ac Storage= 0.193 af (0.107 af above start) Plug-Flow detention time= 53.5 min calculated for 24.327 af (100% of inflow) Center-of-Mass det. time= 6.5 min ( 10,205.7 - 10,199.2 ) Volume Invert Avail.Storage Storage Description #1 968.00' 11.223 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.010 0.000 0.000 969.00 0.040 0.025 0.025 970.00 0.100 0.070 0.095 971.00 0.533 0.316 0.411 972.00 3.130 1.831 2.243 973.00 4.690 3.910 6.153 974.00 5.450 5.070 11.223 Device Routing Invert Outlet Devices #1 Primary 968.58'30.0" Round RCP_Round 30" L= 85.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 968.58' / 968.08' S= 0.0059 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 4.91 sf #2 Secondary 972.01'15.0" Round Culvert L= 114.0' Ke= 0.500 Inlet / Outlet Invert= 971.97' / 972.01' S= -0.0004 '/' Cc= 0.900 n= 0.011, Flow Area= 1.23 sf Primary OutFlow Max=3.03 cfs @ 121.33 hrs HW=970.40' TW=970.36' (Dynamic Tailwater) 1=RCP_Round 30" (Outlet Controls 3.03 cfs @ 1.11 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=969.90' TW=968.00' (Dynamic Tailwater) 2=Culvert ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 392HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 404P: P-LU 2-2 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Peak Elev=970.48' Storage=0.193 af 3.48 cfs 3.04 cfs 3.04 cfs 0.00 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 393HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 490: CB inlet [57] Hint: Peaked at 984.76' (Flood elevation advised) Inflow Area = 5.397 ac, 16.24% Impervious, Inflow Depth > 4.15" for Snowmelt_10d_100yr event Inflow = 0.76 cfs @ 121.45 hrs, Volume= 1.865 af Outflow = 0.76 cfs @ 121.46 hrs, Volume= 1.865 af, Atten= 0%, Lag= 0.1 min Primary = 0.76 cfs @ 121.46 hrs, Volume= 1.865 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 984.76' @ 121.46 hrs Device Routing Invert Outlet Devices #1 Primary 984.63'19.0" Horiz. Orifice/Grate C= 0.600 in 22.0" Grate (75% open area) Limited to weir flow at low heads #2 Secondary 985.10'8.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=0.76 cfs @ 121.46 hrs HW=984.76' TW=967.27' (Dynamic Tailwater) 1=Orifice/Grate (Weir Controls 0.76 cfs @ 1.18 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=984.63' TW=981.04' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 394HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 490: CB inlet Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=5.397 ac Peak Elev=984.76' 0.76 cfs 0.76 cfs 0.76 cfs 0.00 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 395HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 491P: CB inlet [57] Hint: Peaked at 981.04' (Flood elevation advised) Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 981.04' @ 0.00 hrs Device Routing Invert Outlet Devices #1 Primary 981.04'19.0" Horiz. Orifice/Grate C= 0.600 in 22.0" Grate (75% open area) Limited to weir flow at low heads Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=981.04' TW=965.00' (Dynamic Tailwater) 1=Orifice/Grate ( Controls 0.00 cfs) Pond 491P: CB inlet Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Peak Elev=981.04' 0.00 cfs 0.00 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 396HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 500P: IESF Inflow Area = 1.766 ac, 29.44% Impervious, Inflow Depth = 5.01" for Snowmelt_10d_100yr event Inflow = 0.27 cfs @ 121.29 hrs, Volume= 0.737 af Outflow = 0.27 cfs @ 121.32 hrs, Volume= 0.694 af, Atten= 0%, Lag= 1.6 min Primary = 0.27 cfs @ 121.32 hrs, Volume= 0.694 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 985.31' @ 121.32 hrs Surf.Area= 2,777 sf Storage= 2,828 cf Plug-Flow detention time= 712.4 min calculated for 0.694 af (94% of inflow) Center-of-Mass det. time= 369.9 min ( 8,495.2 - 8,125.3 ) Volume Invert Avail.Storage Storage Description #1 984.00' 6,740 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 984.00 0 0 0 984.01 200 1 1 984.02 1,600 9 10 985.00 2,468 1,993 2,003 985.50 2,960 1,357 3,360 986.00 3,520 1,620 4,980 986.50 3,520 1,760 6,740 Device Routing Invert Outlet Devices #1 Primary 982.00'6.0" Vert. Draintile Outlet C= 0.600 #2 Device 1 984.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 984.00' - 984.01' Excluded Surface area = 0 sf #3 Primary 985.30'60.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.27 cfs @ 121.32 hrs HW=985.31' TW=980.21' (Dynamic Tailwater) 1=Draintile Outlet (Passes 0.02 cfs of 1.66 cfs potential flow) 2=Iron Enhanced Filtration (Exfiltration Controls 0.02 cfs) 3=Broad-Crested Rectangular Weir (Weir Controls 0.24 cfs @ 0.28 fps) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 397HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 500P: IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=1.766 ac Peak Elev=985.31' Storage=2,828 cf 0.27 cfs 0.27 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 398HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 600P: rain garden [86] Warning: Oscillations may require smaller dt (severity=13952) Inflow Area = 2.197 ac, 13.03% Impervious, Inflow Depth > 2.22" for Snowmelt_10d_100yr event Inflow = 0.07 cfs @ 121.32 hrs, Volume= 0.406 af Outflow = 0.07 cfs @ 121.40 hrs, Volume= 0.389 af, Atten= 1%, Lag= 4.5 min Discarded = 0.01 cfs @ 119.64 hrs, Volume= 0.140 af Primary = 0.06 cfs @ 121.40 hrs, Volume= 0.249 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 999.52' @ 121.40 hrs Surf.Area= 2,045 sf Storage= 1,258 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 221.7 min ( 9,783.5 - 9,561.9 ) Volume Invert Avail.Storage Storage Description #1 998.70' 6,330 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 998.70 1,000 0 0 999.50 2,045 1,218 1,218 1,000.00 2,045 1,023 2,240 1,002.00 2,045 4,090 6,330 Device Routing Invert Outlet Devices #1 Primary 999.50'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 998.70'0.200 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 119.64 hrs HW=999.50' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.06 cfs @ 121.40 hrs HW=999.52' TW=957.52' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.06 cfs @ 0.33 fps) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 399HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 600P: rain garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Inflow Area=2.197 ac Peak Elev=999.52' Storage=1,258 cf 0.07 cfs 0.07 cfs 0.01 cfs 0.06 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 400HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 800P: rain garden [86] Warning: Oscillations may require smaller dt (severity=6396) Inflow Area = 1.094 ac, 15.23% Impervious, Inflow Depth = 4.49" for Snowmelt_10d_100yr event Inflow = 0.15 cfs @ 121.29 hrs, Volume= 0.409 af Outflow = 0.15 cfs @ 121.34 hrs, Volume= 0.392 af, Atten= 0%, Lag= 3.3 min Discarded = 0.01 cfs @ 121.34 hrs, Volume= 0.126 af Primary = 0.15 cfs @ 121.34 hrs, Volume= 0.266 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,001.53' @ 121.34 hrs Surf.Area= 1,641 sf Storage= 1,122 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 290.0 min ( 8,670.4 - 8,380.4 ) Volume Invert Avail.Storage Storage Description #1 1,000.70' 2,017 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 1,000.70 850 0 0 1,001.00 1,350 330 330 1,001.50 1,600 738 1,067 1,002.00 2,200 950 2,017 Device Routing Invert Outlet Devices #1 Primary 1,001.50'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #2 Discarded 1,000.70'0.200 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 121.34 hrs HW=1,001.53' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.15 cfs @ 121.34 hrs HW=1,001.53' TW=1,000.47' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.15 cfs @ 0.43 fps) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 401HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 800P: rain garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Inflow Area=1.094 ac Peak Elev=1,001.53' Storage=1,122 cf 0.15 cfs 0.15 cfs 0.01 cfs 0.15 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 402HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond 900P: IESF Inflow Area = 1.215 ac, 34.66% Impervious, Inflow Depth = 5.17" for Snowmelt_10d_100yr event Inflow = 0.19 cfs @ 121.29 hrs, Volume= 0.523 af Outflow = 0.19 cfs @ 121.38 hrs, Volume= 0.485 af, Atten= 0%, Lag= 5.2 min Primary = 0.19 cfs @ 121.38 hrs, Volume= 0.485 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 992.04' @ 121.38 hrs Surf.Area= 2,645 sf Storage= 2,201 cf Plug-Flow detention time= 805.4 min calculated for 0.485 af (93% of inflow) Center-of-Mass det. time= 369.8 min ( 8,418.7 - 8,048.9 ) Volume Invert Avail.Storage Storage Description #1 991.00' 3,533 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.00 0 0 0 991.01 100 0 0 991.02 1,650 9 9 991.50 2,131 907 917 992.00 2,605 1,184 2,101 992.50 3,124 1,432 3,533 Device Routing Invert Outlet Devices #1 Primary 989.00'6.0" Vert. Draintile Outlet C= 0.600 #2 Device 1 991.00'5.300 in/hr Iron Enhanced Filtration over Surface area from 991.00' - 991.01' Excluded Surface area = 0 sf #3 Primary 992.00'10.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.19 cfs @ 121.38 hrs HW=992.04' TW=987.12' (Dynamic Tailwater) 1=Draintile Outlet (Passes 0.01 cfs of 1.58 cfs potential flow) 2=Iron Enhanced Filtration (Exfiltration Controls 0.01 cfs) 3=Broad-Crested Rectangular Weir (Weir Controls 0.18 cfs @ 0.46 fps) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 403HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond 900P: IESF Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Inflow Area=1.215 ac Peak Elev=992.04' Storage=2,201 cf 0.19 cfs 0.19 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 404HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond CB-9: EX CB-9 [57] Hint: Peaked at 988.36' (Flood elevation advised) Inflow Area = 11.464 ac, 0.00% Impervious, Inflow Depth > 4.45" for Snowmelt_10d_100yr event Inflow = 1.54 cfs @ 121.69 hrs, Volume= 4.253 af Outflow = 1.54 cfs @ 121.69 hrs, Volume= 4.253 af, Atten= 0%, Lag= 0.1 min Primary = 1.54 cfs @ 121.69 hrs, Volume= 4.253 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 988.36' @ 121.69 hrs Device Routing Invert Outlet Devices #1 Primary 987.85'24.0" Round CMP_Round 24" L= 94.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 987.85' / 980.75' S= 0.0755 '/' Cc= 0.900 n= 0.025 Corrugated metal, Flow Area= 3.14 sf Primary OutFlow Max=1.54 cfs @ 121.69 hrs HW=988.36' TW=980.25' (Dynamic Tailwater) 1=CMP_Round 24" (Inlet Controls 1.54 cfs @ 2.43 fps) Pond CB-9: EX CB-9 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=11.464 ac Peak Elev=988.36' 24.0" Round Culvert n=0.025 L=94.0' S=0.0755 '/' 1.54 cfs 1.54 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 405HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond LUCY: LAKE LUCY [40] Hint: Not Described (Outflow=Inflow) Inflow = 25.14 cfs @ 123.10 hrs, Volume= 112.426 af Primary = 25.14 cfs @ 123.10 hrs, Volume= 112.426 af, Atten= 0%, Lag= 0.1 min Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Pond LUCY: LAKE LUCY Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 25.14 cfs 25.14 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 406HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-1: P-LU 2-1 [86] Warning: Oscillations may require smaller dt (severity=24623) Inflow = 26.34 cfs @ 121.85 hrs, Volume= 99.883 af Outflow = 24.18 cfs @ 123.18 hrs, Volume= 109.776 af, Atten= 8%, Lag= 79.8 min Primary = 24.18 cfs @ 123.18 hrs, Volume= 109.776 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 957.58' @ 123.18 hrs Surf.Area= 327,805 sf Storage= 164,565 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= (not calculated: outflow precedes inflow) Volume Invert Avail.Storage Storage Description #1 957.00' 6,136,244 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 957.00 8,105 0 0 958.00 557,600 282,853 282,853 960.00 1,540,893 2,098,493 2,381,346 962.00 2,214,005 3,754,898 6,136,244 Device Routing Invert Outlet Devices #1 Primary 957.00'20.0' long Broad-Crested Rectangular Weir X 0.00 Head (feet) 0.50 1.00 1.50 Coef. (English) 3.00 3.00 3.00 #2 Primary 956.50'Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 0.00 0.50 1.00 1.50 2.00 2.50 Width (feet) 2.00 6.00 16.00 25.00 37.00 45.00 Primary OutFlow Max=24.18 cfs @ 123.18 hrs HW=957.58' TW=0.00' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) 2=Custom Weir/Orifice (Weir Controls 24.18 cfs @ 2.73 fps) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 407HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-1: P-LU 2-1 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Peak Elev=957.58' Storage=164,565 cf 26.34 cfs 24.18 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 408HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-10: P-LU 2-10 Inflow Area = 9.880 ac, 0.00% Impervious, Inflow Depth = 4.11" for Snowmelt_10d_100yr event Inflow = 1.32 cfs @ 121.26 hrs, Volume= 3.382 af Outflow = 1.30 cfs @ 121.41 hrs, Volume= 3.216 af, Atten= 1%, Lag= 8.9 min Primary = 1.30 cfs @ 121.41 hrs, Volume= 3.216 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 972.61' @ 121.41 hrs Surf.Area= 0.091 ac Storage= 0.207 af Plug-Flow detention time= 539.3 min calculated for 3.216 af (95% of inflow) Center-of-Mass det. time= 268.5 min ( 8,935.4 - 8,667.0 ) Volume Invert Avail.Storage Storage Description #1 968.00' 1.289 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.009 0.000 0.000 972.00 0.070 0.158 0.158 974.00 0.140 0.210 0.368 976.00 0.220 0.360 0.728 978.00 0.341 0.561 1.289 Device Routing Invert Outlet Devices #1 Primary 972.10'18.0" Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.30 cfs @ 121.41 hrs HW=972.61' TW=970.41' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 1.30 cfs @ 2.44 fps) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 409HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-10: P-LU 2-10 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=9.880 ac Peak Elev=972.61' Storage=0.207 af 1.32 cfs 1.30 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 410HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-11: P-LU 2-11 Inflow = 8.33 cfs @ 121.43 hrs, Volume= 23.148 af Outflow = 1.68 cfs @ 155.25 hrs, Volume= 13.900 af, Atten= 80%, Lag= 2,029.3 min Primary = 1.68 cfs @ 155.25 hrs, Volume= 13.900 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 972.95' @ 155.25 hrs Surf.Area= 5.908 ac Storage= 11.086 af Plug-Flow detention time= 3,799.0 min calculated for 13.900 af (60% of inflow) Center-of-Mass det. time= 2,113.5 min ( 11,017.5 - 8,904.1 ) Volume Invert Avail.Storage Storage Description #1 968.00' 93.400 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 968.00 0.360 0.000 0.000 970.00 1.000 1.360 1.360 972.00 4.000 5.000 6.360 976.00 12.000 32.000 38.360 980.00 15.520 55.040 93.400 Device Routing Invert Outlet Devices #1 Primary 972.01'15.0" Round Culvert L= 114.0' Ke= 0.500 Inlet / Outlet Invert= 972.01' / 971.97' S= 0.0004 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 1.23 sf Primary OutFlow Max=1.68 cfs @ 155.25 hrs HW=972.95' TW=970.11' (Dynamic Tailwater) 1=Culvert (Barrel Controls 1.68 cfs @ 2.35 fps) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 411HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-11: P-LU 2-11 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)9 8 7 6 5 4 3 2 1 0 Peak Elev=972.95' Storage=11.086 af 15.0" Round Culvert n=0.011 L=114.0' S=0.0004 '/' 8.33 cfs 1.68 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 412HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-12: P-LU 2-12 Inflow Area = 9.720 ac, 0.00% Impervious, Inflow Depth = 4.00" for Snowmelt_10d_100yr event Inflow = 1.26 cfs @ 121.26 hrs, Volume= 3.240 af Outflow = 0.85 cfs @ 123.55 hrs, Volume= 2.209 af, Atten= 33%, Lag= 137.1 min Primary = 0.85 cfs @ 123.55 hrs, Volume= 2.209 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 978.41' @ 123.55 hrs Surf.Area= 0.295 ac Storage= 1.134 af Plug-Flow detention time= 2,694.1 min calculated for 2.209 af (68% of inflow) Center-of-Mass det. time= 1,259.5 min ( 9,966.2 - 8,706.8 ) Volume Invert Avail.Storage Storage Description #1 972.00' 2.680 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 972.00 0.080 0.000 0.000 978.00 0.260 1.020 1.020 980.00 0.430 0.690 1.710 982.00 0.540 0.970 2.680 Device Routing Invert Outlet Devices #1 Primary 978.00'18.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 980.00'100.0' long x 26.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.85 cfs @ 123.55 hrs HW=978.41' TW=972.32' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 0.85 cfs @ 2.18 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=972.00' TW=968.00' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 413HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-12: P-LU 2-12 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=9.720 ac Peak Elev=978.41' Storage=1.134 af 1.26 cfs 0.85 cfs 0.85 cfs 0.00 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 414HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-13: P-LU 2-13 Inflow Area = 15.390 ac, 0.00% Impervious, Inflow Depth = 4.00" for Snowmelt_10d_100yr event Inflow = 2.00 cfs @ 121.28 hrs, Volume= 5.130 af Outflow = 1.93 cfs @ 121.57 hrs, Volume= 4.611 af, Atten= 3%, Lag= 17.2 min Primary = 1.93 cfs @ 121.57 hrs, Volume= 4.611 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 990.18' @ 121.57 hrs Surf.Area= 0.267 ac Storage= 0.654 af Plug-Flow detention time= 1,033.9 min calculated for 4.611 af (90% of inflow) Center-of-Mass det. time= 500.4 min ( 9,208.1 - 8,707.7 ) Volume Invert Avail.Storage Storage Description #1 986.00' 2.750 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 986.00 0.054 0.000 0.000 989.60 0.230 0.511 0.511 993.00 0.450 1.156 1.667 994.00 0.540 0.495 2.162 995.00 0.635 0.587 2.750 Device Routing Invert Outlet Devices #1 Primary 989.60'24.0" Round Culvert L= 110.0' Ke= 0.500 Inlet / Outlet Invert= 989.60' / 983.00' S= 0.0600 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 3.14 sf Primary OutFlow Max=1.93 cfs @ 121.57 hrs HW=990.18' TW=972.03' (Dynamic Tailwater) 1=Culvert (Inlet Controls 1.93 cfs @ 2.58 fps) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 415HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-13: P-LU 2-13 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Inflow Area=15.390 ac Peak Elev=990.18' Storage=0.654 af 24.0" Round Culvert n=0.011 L=110.0' S=0.0600 '/' 2.00 cfs 1.93 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 416HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Inflow Area = 53.360 ac, 0.00% Impervious, Inflow Depth > 4.03" for Snowmelt_10d_100yr event Inflow = 7.04 cfs @ 121.40 hrs, Volume= 17.904 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 993.84' @ 250.00 hrs Surf.Area= 12.419 ac Storage= 17.904 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 991.90' 52.450 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 991.90 5.100 0.000 0.000 992.00 5.900 0.550 0.550 994.00 13.000 18.900 19.450 996.00 20.000 33.000 52.450 Device Routing Invert Outlet Devices #1 Primary 995.00'30.0' long Broad-Crested Rectangular Weir Head (feet) 0.50 1.00 Coef. (English) 2.80 2.80 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=991.90' TW=957.00' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 417HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-3: P-LU 2-3 (LAKE HARRISON) Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=53.360 ac Peak Elev=993.84' Storage=17.904 af 7.04 cfs 0.00 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 418HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-4: P-LU 2-4 Inflow Area = 13.940 ac, 3.87% Impervious, Inflow Depth = 4.81" for Snowmelt_10d_100yr event Inflow = 2.12 cfs @ 121.29 hrs, Volume= 5.587 af Outflow = 2.09 cfs @ 121.47 hrs, Volume= 5.263 af, Atten= 2%, Lag= 10.8 min Primary = 2.09 cfs @ 121.47 hrs, Volume= 5.263 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 974.63' @ 121.47 hrs Surf.Area= 0.159 ac Storage= 0.414 af Plug-Flow detention time= 686.1 min calculated for 5.263 af (94% of inflow) Center-of-Mass det. time= 354.9 min ( 8,735.5 - 8,380.6 ) Volume Invert Avail.Storage Storage Description #1 970.00' 1.120 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 970.00 0.020 0.000 0.000 974.00 0.140 0.320 0.320 978.00 0.260 0.800 1.120 Device Routing Invert Outlet Devices #1 Primary 974.00'21.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 975.00'30.0' long x 15.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=2.09 cfs @ 121.47 hrs HW=974.63' TW=970.38' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 2.09 cfs @ 2.70 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=970.00' TW=969.90' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 419HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-4: P-LU 2-4 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Inflow Area=13.940 ac Peak Elev=974.63' Storage=0.414 af 2.12 cfs 2.09 cfs 2.09 cfs 0.00 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 420HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-5: P-LU 2-5 Inflow Area = 9.150 ac, 0.00% Impervious, Inflow Depth = 4.66" for Snowmelt_10d_100yr event Inflow = 1.37 cfs @ 121.28 hrs, Volume= 3.551 af Outflow = 1.16 cfs @ 122.37 hrs, Volume= 3.568 af, Atten= 15%, Lag= 65.8 min Primary = 1.16 cfs @ 122.37 hrs, Volume= 3.568 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 965.00' Surf.Area= 0.200 ac Storage= 0.447 af Peak Elev= 965.34' @ 122.37 hrs Surf.Area= 0.299 ac Storage= 0.665 af (0.218 af above start) Plug-Flow detention time= 1,312.3 min calculated for 3.121 af (88% of inflow) Center-of-Mass det. time= 99.4 min ( 8,564.2 - 8,464.8 ) Volume Invert Avail.Storage Storage Description #1 956.00' 2.352 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 956.00 0.004 0.000 0.000 962.00 0.030 0.102 0.102 965.00 0.200 0.345 0.447 968.00 1.070 1.905 2.352 Device Routing Invert Outlet Devices #1 Primary 962.98'18.0" Round Culvert L= 30.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 962.98' / 962.83' S= 0.0050 '/' Cc= 0.900 n= 0.013, Flow Area= 1.77 sf #2 Device 1 964.83'15.0" Round Culvert L= 15.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 963.38' / 964.83' S= -0.0967 '/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #3 Device 1 966.00'18.0" W x 12.0" H Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.16 cfs @ 122.37 hrs HW=965.34' TW=957.57' (Dynamic Tailwater) 1=Culvert (Passes 1.16 cfs of 9.97 cfs potential flow) 2=Culvert (Inlet Controls 1.16 cfs @ 2.44 fps) 3=Orifice/Grate ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 421HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-5: P-LU 2-5 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=9.150 ac Peak Elev=965.34' Storage=0.665 af 1.37 cfs 1.16 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 422HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-6: Wetland 11 Inflow Area = 23.494 ac, 12.62% Impervious, Inflow Depth > 4.54" for Snowmelt_10d_100yr event Inflow = 3.26 cfs @ 121.49 hrs, Volume= 8.893 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 982.27' @ 250.00 hrs Surf.Area= 151,825 sf Storage= 387,356 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 978.00' 1,458,300 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 978.00 16,553 0 0 980.00 90,625 107,178 107,178 982.00 148,800 239,425 346,603 984.00 171,115 319,915 666,518 986.00 197,334 368,449 1,034,967 988.00 225,999 423,333 1,458,300 Device Routing Invert Outlet Devices #1 Primary 982.57'15.0" Round RCP_Round 15" L= 50.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 982.57' / 982.05' S= 0.0104 '/' Cc= 0.900 n= 0.013 Concrete sewer w/manholes & inlets, Flow Area= 1.23 sf Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=978.00' TW=965.00' (Dynamic Tailwater) 1=RCP_Round 15" ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 423HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-6: Wetland 11 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=23.494 ac Peak Elev=982.27' Storage=387,356 cf 15.0" Round Culvert n=0.013 L=50.0' S=0.0104 '/' 3.26 cfs 0.00 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 424HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-7: P-LU 2-7 Inflow Area = 8.904 ac, 0.00% Impervious, Inflow Depth = 4.55" for Snowmelt_10d_100yr event Inflow = 1.30 cfs @ 121.28 hrs, Volume= 3.373 af Outflow = 1.25 cfs @ 121.61 hrs, Volume= 3.366 af, Atten= 4%, Lag= 19.8 min Primary = 1.25 cfs @ 121.61 hrs, Volume= 3.366 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 995.27' Surf.Area= 7,683 sf Storage= 18,263 cf Peak Elev= 995.86' @ 121.61 hrs Surf.Area= 8,687 sf Storage= 23,138 cf (4,875 cf above start) Plug-Flow detention time= 1,308.0 min calculated for 2.946 af (87% of inflow) Center-of-Mass det. time= 125.1 min ( 8,631.3 - 8,506.2 ) Volume Invert Avail.Storage Storage Description #1 991.00' 117,493 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.00 871 0 0 995.27 7,683 18,263 18,263 996.00 8,932 6,064 24,327 998.00 12,906 21,838 46,165 1,000.00 18,379 31,285 77,450 1,002.00 21,664 40,043 117,493 Device Routing Invert Outlet Devices #1 Primary 995.27'12.0" Round RCP_Round 12" L= 60.8' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 995.27' / 994.07' S= 0.0197 '/' Cc= 0.900 n= 0.013, Flow Area= 0.79 sf Primary OutFlow Max=1.25 cfs @ 121.61 hrs HW=995.86' TW=988.36' (Dynamic Tailwater) 1=RCP_Round 12" (Inlet Controls 1.25 cfs @ 2.61 fps) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 425HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-7: P-LU 2-7 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=8.904 ac Peak Elev=995.86' Storage=23,138 cf 12.0" Round Culvert n=0.013 L=60.8' S=0.0197 '/' 1.30 cfs 1.25 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 426HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-8: P-LU 2-8 Inflow Area = 5.830 ac, 0.00% Impervious, Inflow Depth = 4.11" for Snowmelt_10d_100yr event Inflow = 0.78 cfs @ 121.25 hrs, Volume= 1.996 af Outflow = 0.75 cfs @ 121.59 hrs, Volume= 1.632 af, Atten= 4%, Lag= 20.3 min Primary = 0.75 cfs @ 121.59 hrs, Volume= 1.632 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 996.44' @ 121.59 hrs Surf.Area= 0.158 ac Storage= 0.425 af Plug-Flow detention time= 1,692.5 min calculated for 1.632 af (82% of inflow) Center-of-Mass det. time= 780.8 min ( 9,446.9 - 8,666.0 ) Volume Invert Avail.Storage Storage Description #1 992.00' 0.720 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 992.00 0.040 0.000 0.000 996.00 0.140 0.360 0.360 998.00 0.220 0.360 0.720 Device Routing Invert Outlet Devices #1 Primary 996.00'12.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 997.00'50.0' long x 20.0' breadth Broad-Crested Rectangular Weir X 2.00 Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.75 cfs @ 121.59 hrs HW=996.44' TW=992.54' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 0.75 cfs @ 2.25 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=992.00' TW=991.90' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 427HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-8: P-LU 2-8 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=5.830 ac Peak Elev=996.44' Storage=0.425 af 0.78 cfs 0.75 cfs 0.75 cfs 0.00 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 428HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU 2-9: P-LU 2-9 Inflow Area = 11.210 ac, 0.00% Impervious, Inflow Depth = 3.89" for Snowmelt_10d_100yr event Inflow = 1.42 cfs @ 121.28 hrs, Volume= 3.636 af Outflow = 0.21 cfs @ 169.19 hrs, Volume= 1.587 af, Atten= 85%, Lag= 2,875.0 min Primary = 0.21 cfs @ 169.19 hrs, Volume= 1.587 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 977.26' @ 169.19 hrs Surf.Area= 1.602 ac Storage= 2.219 af Plug-Flow detention time= 4,916.4 min calculated for 1.587 af (44% of inflow) Center-of-Mass det. time= 2,818.0 min ( 11,565.3 - 8,747.3 ) Volume Invert Avail.Storage Storage Description #1 975.00' 3.430 af Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 975.00 0.230 0.000 0.000 977.00 1.560 1.790 1.790 978.00 1.720 1.640 3.430 Device Routing Invert Outlet Devices #1 Primary 977.00'8.0" Vert. Orifice/Grate C= 0.580 Primary OutFlow Max=0.21 cfs @ 169.19 hrs HW=977.26' TW=970.10' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 0.21 cfs @ 1.68 fps) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 429HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU 2-9: P-LU 2-9 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=11.210 ac Peak Elev=977.26' Storage=2.219 af 1.42 cfs 0.21 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 430HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU-2-16: P-LU-2-16 Inflow Area = 2.560 ac, 0.00% Impervious, Inflow Depth = 4.22" for Snowmelt_10d_100yr event Inflow = 0.35 cfs @ 121.24 hrs, Volume= 0.900 af Outflow = 0.30 cfs @ 122.28 hrs, Volume= 0.887 af, Atten= 14%, Lag= 62.7 min Primary = 0.30 cfs @ 122.28 hrs, Volume= 0.887 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 994.07' Surf.Area= 9,913 sf Storage= 902 cf Peak Elev= 994.34' @ 122.28 hrs Surf.Area= 10,772 sf Storage= 4,364 cf (3,462 cf above start) Plug-Flow detention time= 629.5 min calculated for 0.867 af (96% of inflow) Center-of-Mass det. time= 316.7 min ( 8,941.8 - 8,625.1 ) Volume Invert Avail.Storage Storage Description #1 994.00' 107,634 cf Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 994.00 9,689 0 0 996.00 16,084 25,773 25,773 998.00 20,360 36,444 62,217 1,000.00 25,057 45,417 107,634 Device Routing Invert Outlet Devices #1 Primary 994.07'12.0" Round RCP_Round 12" L= 93.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 994.07' / 987.85' S= 0.0669 '/' Cc= 0.900 n= 0.013, Flow Area= 0.79 sf Primary OutFlow Max=0.30 cfs @ 122.28 hrs HW=994.34' TW=988.35' (Dynamic Tailwater) 1=RCP_Round 12" (Inlet Controls 0.30 cfs @ 1.76 fps) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 431HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU-2-16: P-LU-2-16 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=2.560 ac Peak Elev=994.34' Storage=4,364 cf 12.0" Round Culvert n=0.013 L=93.0' S=0.0669 '/' 0.35 cfs 0.30 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 432HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond P-LU10-1: P-LU 10-1 Inflow Area = 7.937 ac, 0.00% Impervious, Inflow Depth = 4.61" for Snowmelt_10d_100yr event Inflow = 1.18 cfs @ 121.26 hrs, Volume= 3.052 af Outflow = 1.13 cfs @ 121.60 hrs, Volume= 2.651 af, Atten= 4%, Lag= 20.3 min Primary = 1.13 cfs @ 121.60 hrs, Volume= 2.651 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 963.65' @ 121.60 hrs Surf.Area= 0.192 ac Storage= 0.497 af Plug-Flow detention time= 1,356.0 min calculated for 2.651 af (87% of inflow) Center-of-Mass det. time= 658.6 min ( 9,136.0 - 8,477.4 ) Volume Invert Avail.Storage Storage Description #1 958.00' 1.715 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 958.00 0.020 0.000 0.000 962.00 0.100 0.240 0.240 963.10 0.180 0.154 0.394 964.00 0.200 0.171 0.565 966.00 0.300 0.500 1.065 968.00 0.350 0.650 1.715 Device Routing Invert Outlet Devices #1 Primary 963.10'12.0" Vert. Orifice/Grate C= 0.600 #2 Secondary 966.00'100.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=1.13 cfs @ 121.60 hrs HW=963.65' TW=0.00' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 1.13 cfs @ 2.53 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=958.00' TW=0.00' (Dynamic Tailwater) 2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 433HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond P-LU10-1: P-LU 10-1 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=7.937 ac Peak Elev=963.65' Storage=0.497 af 1.18 cfs 1.13 cfs 1.13 cfs 0.00 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 434HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W12: Wetland 12 Inflow Area = 0.734 ac, 6.42% Impervious, Inflow Depth = 4.22" for Snowmelt_10d_100yr event Inflow = 0.10 cfs @ 121.21 hrs, Volume= 0.258 af Outflow = 0.06 cfs @ 123.76 hrs, Volume= 0.176 af, Atten= 36%, Lag= 152.7 min Primary = 0.06 cfs @ 123.76 hrs, Volume= 0.176 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 994.14' @ 123.76 hrs Surf.Area= 0.113 ac Storage= 0.095 af Plug-Flow detention time= 2,856.0 min calculated for 0.176 af (68% of inflow) Center-of-Mass det. time= 1,394.2 min ( 9,942.1 - 8,547.9 ) Volume Invert Avail.Storage Storage Description #1 992.50' 0.430 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 992.50 0.002 0.000 0.000 993.00 0.035 0.009 0.009 993.50 0.070 0.026 0.035 994.00 0.104 0.043 0.079 994.50 0.134 0.059 0.138 995.00 0.171 0.076 0.215 995.50 0.210 0.095 0.310 996.00 0.269 0.120 0.430 Device Routing Invert Outlet Devices #1 Primary 994.00'15.0" Round RCP_Round 15" L= 45.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 994.00' / 993.82' S= 0.0040 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf Primary OutFlow Max=0.06 cfs @ 123.76 hrs HW=994.14' TW=967.55' (Dynamic Tailwater) 1=RCP_Round 15" (Barrel Controls 0.06 cfs @ 1.24 fps) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 435HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W12: Wetland 12 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.11 0.105 0.1 0.095 0.09 0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Inflow Area=0.734 ac Peak Elev=994.14' Storage=0.095 af 15.0" Round Culvert n=0.013 L=45.0' S=0.0040 '/' 0.10 cfs 0.06 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 436HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W13: Wetland 13 Inflow Area = 1.729 ac, 6.61% Impervious, Inflow Depth = 4.34" for Snowmelt_10d_100yr event Inflow = 0.24 cfs @ 121.31 hrs, Volume= 0.625 af Outflow = 0.23 cfs @ 121.52 hrs, Volume= 0.498 af, Atten= 2%, Lag= 12.8 min Primary = 0.23 cfs @ 121.52 hrs, Volume= 0.498 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 993.04' @ 121.52 hrs Surf.Area= 10,675 sf Storage= 5,986 cf Plug-Flow detention time= 1,878.4 min calculated for 0.498 af (80% of inflow) Center-of-Mass det. time= 855.5 min ( 9,373.7 - 8,518.2 ) Volume Invert Avail.Storage Storage Description #1 991.50' 22,402 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 991.50 17 0 0 992.00 648 166 166 993.00 10,069 5,359 5,525 994.00 23,685 16,877 22,402 Device Routing Invert Outlet Devices #1 Primary 993.00'10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=0.23 cfs @ 121.52 hrs HW=993.04' TW=987.12' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.23 cfs @ 0.53 fps) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 437HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W13: Wetland 13 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=1.729 ac Peak Elev=993.04' Storage=5,986 cf 0.24 cfs 0.23 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 438HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W14: Wetland 14 Inflow Area = 5.397 ac, 16.24% Impervious, Inflow Depth > 4.22" for Snowmelt_10d_100yr event Inflow = 0.76 cfs @ 121.34 hrs, Volume= 1.899 af Outflow = 0.76 cfs @ 121.45 hrs, Volume= 1.865 af, Atten= 0%, Lag= 6.6 min Primary = 0.76 cfs @ 121.45 hrs, Volume= 1.865 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 987.12' @ 121.45 hrs Surf.Area= 4,607 sf Storage= 1,955 cf Plug-Flow detention time= 248.3 min calculated for 1.865 af (98% of inflow) Center-of-Mass det. time= 141.7 min ( 8,800.2 - 8,658.5 ) Volume Invert Avail.Storage Storage Description #1 986.00' 27,529 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 986.00 261 0 0 986.50 1,045 327 327 987.00 3,560 1,151 1,478 987.50 8,040 2,900 4,378 988.00 9,380 4,355 8,733 988.50 11,195 5,144 13,877 989.00 13,765 6,240 20,117 989.50 15,884 7,412 27,529 Device Routing Invert Outlet Devices #1 Primary 987.00'8.0' long x 4.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Primary OutFlow Max=0.76 cfs @ 121.45 hrs HW=987.12' TW=984.76' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.76 cfs @ 0.81 fps) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 439HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W14: Wetland 14 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=5.397 ac Peak Elev=987.12' Storage=1,955 cf 0.76 cfs 0.76 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 440HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W2: Wetland 2 Inflow = 6.72 cfs @ 121.34 hrs, Volume= 33.822 af Outflow = 6.18 cfs @ 122.52 hrs, Volume= 33.818 af, Atten= 8%, Lag= 71.0 min Primary = 6.18 cfs @ 122.52 hrs, Volume= 33.723 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Tertiary = 0.04 cfs @ 53.71 hrs, Volume= 0.094 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Starting Elev= 969.90' Surf.Area= 2,833 sf Storage= 1,494 cf Peak Elev= 970.44' @ 122.52 hrs Surf.Area= 18,045 sf Storage= 6,485 cf (4,991 cf above start) Plug-Flow detention time= 18.1 min calculated for 33.783 af (100% of inflow) Center-of-Mass det. time= 3.1 min ( 9,777.3 - 9,774.2 ) Volume Invert Avail.Storage Storage Description #1 968.85' 1,052,827 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 968.85 12 0 0 970.00 3,102 1,791 1,791 972.00 70,418 73,520 75,311 974.00 154,658 225,076 300,387 976.00 189,337 343,995 644,382 978.00 219,108 408,445 1,052,827 Device Routing Invert Outlet Devices #1 Primary 967.70'18.0" Round CMP_Round 18" L= 210.0' CMP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 967.70' / 965.96' S= 0.0083 '/' Cc= 0.900 n= 0.025 Corrugated metal, Flow Area= 1.77 sf #2 Device 1 969.90'20.0' long x 5.0' breadth Ditch Berm Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 #3 Secondary 979.30'30.0' long x 15.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 #4 Tertiary 968.58'30.0" Round Culvert L= 85.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 968.08' / 968.58' S= -0.0059 '/' Cc= 0.900 n= 0.120, Flow Area= 4.91 sf Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 441HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Primary OutFlow Max=6.18 cfs @ 122.52 hrs HW=970.44' TW=966.79' (Dynamic Tailwater) 1=CMP_Round 18" (Barrel Controls 6.18 cfs @ 3.50 fps) 2=Ditch Berm (Passes 6.18 cfs of 21.22 cfs potential flow) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=969.90' TW=957.00' (Dynamic Tailwater) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Tertiary OutFlow Max=0.04 cfs @ 53.71 hrs HW=969.91' TW=969.91' (Dynamic Tailwater) 4=Culvert (Outlet Controls 0.04 cfs @ 0.01 fps) Pond W2: Wetland 2 Inflow Outflow Primary Secondary Tertiary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Peak Elev=970.44' Storage=6,485 cf 6.72 cfs 6.18 cfs 6.18 cfs 0.00 cfs 0.04 cfs Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 442HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Summary for Pond W6: Wetland 6 Inflow Area = 1.668 ac, 12.44% Impervious, Inflow Depth = 3.35" for Snowmelt_10d_100yr event Inflow = 0.22 cfs @ 121.28 hrs, Volume= 0.466 af Outflow = 0.05 cfs @ 135.73 hrs, Volume= 0.210 af, Atten= 78%, Lag= 867.0 min Primary = 0.05 cfs @ 135.73 hrs, Volume= 0.210 af Routing by Sim-Route method, Time Span= 0.00-250.00 hrs, dt= 0.002 hrs Peak Elev= 1,001.01' @ 135.73 hrs Surf.Area= 10,093 sf Storage= 11,212 cf Plug-Flow detention time= 3,855.5 min calculated for 0.210 af (45% of inflow) Center-of-Mass det. time= 2,027.3 min ( 10,642.2 - 8,615.0 ) Volume Invert Avail.Storage Storage Description #1 999.00' 16,680 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 999.00 2,453 0 0 999.50 3,157 1,403 1,403 1,000.00 5,185 2,086 3,488 1,000.50 7,715 3,225 6,713 1,001.00 10,073 4,447 11,160 1,001.50 12,007 5,520 16,680 Device Routing Invert Outlet Devices #1 Primary 1,001.00'50.0' long x 25.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.05 cfs @ 135.73 hrs HW=1,001.01' TW=999.52' (Dynamic Tailwater) 1=Broad-Crested Rectangular Weir (Weir Controls 0.05 cfs @ 0.19 fps) Bluffs at Lake Lucy Existing Snowmelt_10d_100yr Snowmelt_10d_100yr Rainfall=7.20"BluffsLL_ExistingConditions_09.0 Printed 9/23/2020Prepared by AE2S Page 443HydroCAD® 10.00-20 s/n 07538 © 2017 HydroCAD Software Solutions LLC Pond W6: Wetland 6 Inflow Primary Hydrograph Time (hours) 2502402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.24 0.23 0.22 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Inflow Area=1.668 ac Peak Elev=1,001.01' Storage=11,212 cf 0.22 cfs 0.05 cfs The Bluffs at Lake Lucy Stormwater Management Plan Appendix D October 2020 www.ae2s.com Appendix D: P8 Output P8 Urban Catchment Model, Version 3.5 Run Date 09/22/20 Case proposed conditions_2020.09.21.p8c FirstDate 01/01/08 Precip(in) 319.0 Title Bluffs at Lake Lucy Proposed LastDate 12/31/18 Rain(in) 286.65 PrecFile MSP4918.pcp Events 827 Snow(in) 32.33 PartFile nurp50.p8p TotalHrs 96312 TotalYrs 10.99 Case Title Bluffs at Lake Lucy Proposed Case Data File proposed conditions_2020.09.21.p8c Path C:\Users\LWehr\AE2S\Sathre - Galphin\P8\ Case Notes: Storm Data File MSP4918.pcp Particle File nurp50.p8p Air Temp File File MSP4918.tem Time Steps Per Hour 4 Minimum Inter-Event Time (hrs) 10 Maximum Continuity Error % 2 Rainfall Breakpoint (inches) 0.8 Precipitation Scale Factor 1 Air Temp Offset (deg-F)0 Loops Thru Storm File 10 Simulation Dates Start 1/1/2008 Keep 1/1/2008 Stop 12/31/2018 Max Snowfall Temperature (deg-f) 32.0 SnowMelt Temperature (deg-f) 32.0 Snowmelt Coef (in/degF-Day) 0.06 Soil Freeze Temp (deg-F) 32.0 Snowmelt Abstraction Factor 1.00 Evapo-Trans. Calibration Factor 1.00 Growing Season Start Month 5 Growing Season End Month 10 5-Day Antecedent Rainfall + Runoff (inches) CN Antecedent Moisture Condition AMC-II AMC-III Growing Season 1.40 2.10 NonGrowing Season 0.50 1.10 Watershed Data Watershed Name BLL_PR101 BLL_PR102 BLL_PR103 BLL_PR104 BLL_PR105 BLL_PR106 BLL_PR107 BLL_PR108 BLL_PR109 BLL_PR110 BLL_PR111 BLL_PR201 BLL_PR202 BLL_PR203 BLL_PR204 BLL_PR205 BLL_PR301 BLL_PR302 BLL_PR112 BLL_PR206 Runoff to Device Pond 1 Pond 1 Pond 1 Pond 1 Pond 1 Pond 1 Pond 1 Pond 1 Pond 1 Pond 1 Pond 1 Pond 2 Pond 2 Pond 2 Pond 2 Pond 2 Wetland 1 Buffer Wetland 1 Buffer Pond 1 Pond 2 Infiltration to Device Watershed Area 7.27 0.74 0.25 0.1 0.26 0.208 0.15 0.16 0.16 0.36 0.28 4.57 0.92 0.34 1.41 1.75 3 0.42 0.74 0.31 SCS Curve Number (Pervious) 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 71 74 74 74 Scale Factor for Pervious Runoff Load 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Indirectly Connected Imperv Fraction 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 UnSwept Impervious Fraction 0.49 0.11 0.16 0.3 0.77 0.38 0.8 0.75 0.81 0.83 0.82 0.44 0.18 0.26 0.12 0.13 0.01 0.24 0.11 0.1 UnSwept Depression Storage (inches) 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 UnSwept Imperv. Runoff Coefficient 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 UnSwept Scale Factor for Particle Loads 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Swept Impervious Fraction 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Swept Depression Storage (inches) 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 Swept Imperv. Runoff Coefficient 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Swept Scale Factor for Particle Loads 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Sweeping Frequency 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Sweeping Efficiency 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Sweeping Start Date (MMDD) 101 101 101 101 101 101 101 101 101 101 101 101 101 101 101 101 101 101 101 101 Sweeping Stop Date (MMDD) 1231 1231 1231 1231 1231 1231 1231 1231 1231 1231 1231 1231 1231 1231 1231 1231 1231 1231 1231 1231 Device Data Device Name Pond 1 Pond 2 Wetland 1 Buffer Device Type POND GENERAL SWALE Infiltration Outlet Normal Outlet Spillway Outlet Particle Removal Scale Factor 1 1 Bottom Elevation (ft)963 962 Bottom Area (acres)0.049 Permanent Pool Area (acres) 0.482 Permanent Pool Volume (ac-ft) 2.082 Perm Pool Infilt Rate (in/hr) 0 Flood Pool Area (acres) 0.818 Flood Pool Volume (ac-ft) 3.778 Flood Pool Infilt Rate (in/hr) 0 1 Infilt Basin Void Fraction (%) Detention Pond Outlet Parameters Outlet Type WEIR Outlet Orifice Diameter (in) Orifice Discharge Coef Outlet Weir Length (ft)4 Weir Discharge Coef 0.6 Perforated Riser Height (ft) Number of Holes in Riser Holes Diameter Flood Pool Drain Time (hrs) Swale Parameters Length of Flow Path (ft)100 Slope of Flow Path %10 Bottom Width (ft)1100 Side Slope (ft-v/ft-h)0.05 Maximum Depth of Flow (ft)1 Mannings n Constant 0.1 Hydraulic Model 0 Pipe, Splitter, Aquifer Parameter Hydraulic Res. Time (hrs) Rating Tables for General Devices Device Pond 2 Elevation (ft) 956 960 964 965 965.6 966 967 967.4 968 968.3 968.9 969.2 Area (acres) 0.008 0.06 0.545 0.624 0.672 0.704 0.76 0.783 0.817 0.852 0.921 0.955 Infilt (cfs) 0 0 0.24 0.24 0.24 0.24 0.24 0.24 0.24 0.24 0.24 0.24 NormalOut (cfs) 0 0 0 0 0.05 0.61 7.18 18.54 22.91 23.42 24.41 24.88 Spillway (cfs) 0 0 0 0 0 0 0 0 0 3.23 18.27 28.08 Particle Data Particle File nurp50.p8p Particle Class P0% P10% P30% P50% P80% Filtration Efficiency (%) 100 100 100 100 100 Settling Velocity (ft/hr) 0 0.03 0.3 1.5 15 First Order Decay Rate (1/day) 0 0 0 0 0 2nd Order Decay (1/day-ppm) 0 0 0 0 0 Impervious Runoff Conc (ppm) 1 0 0 0 0 Pervious Runoff Conc (ppm) 1 100 100 100 200 Pervious Conc Exponent 0 1 1 1 1 Accum. Rate (lbs-ac-day) 0 1.75 1.75 1.75 3.5 Particle Removal Rate (1/day) 0 0.25 0.25 0.25 0.25 Washoff Coefficient 0 20 20 20 20 Washoff Exponent 0 2 2 2 2 Sweeper Efficiency 0 0 0 5 15 Water Quality Component Data Component Name TSS TP TKN CU PB ZN HC Water Quality Criteria (ppm) Level 1 5 0.025 2 2 0.02 5 0.1 Level 2 10 0.05 1 0.0048 0.014 0.0362 0.5 Level 3 20 0.1 0.5 0.02 0.15 0.38 1 Content Scale Factor 1 1 1 1 1 1 1 Bluffs at Lake Lucy Proposed Model Particle Composition (mg/kg) P0%0 99000 600000 13600 2000 64000 250000 P10% 1000000 3850 15000 340 180 1600 22500 P30% 1000000 3850 15000 340 180 1600 22500 P50% 1000000 3850 15000 340 180 1600 22500 P80% 1000000 0 0 340 180 0 22500 Mass Balances by Variable Variable: Flow Flow ac-ft Mass Balance Term OVERALL Pond 1 Pond 2Wetland 1 Buffer OVERALL Pond 1 Pond 2Wetland 1 Buffer 01 watershed inflows 209.07 125.88 74.90 8.28 03 infiltrate 78.04 0.00 74.59 3.46 04 exfiltrate 78.04 0.00 74.59 3.46 06 normal outlet 130.95 125.88 0.25 4.82 09 total inflow 209.07 125.88 74.90 8.28 10 surface outflow 130.95 125.88 0.25 4.82 11 groundw outflow 78.04 0.00 74.59 3.46 12 total outflow 209.00 125.88 74.84 8.28 14 storage increase 0.07 0.00 0.07 0.00 15 mass balance check 0.01 0.00 0.00 0.01 Load Reduction (%)0.00 0.00 0.00 0.00 Variable: TSS Loads(lbs)Concs (ppm) Mass Balance Term OVERALL Pond 1 Pond 2Wetland 1 Buffer OVERALL Pond 1 Pond 2Wetland 1 Buffer 01 watershed inflows 64298.34 39032.35 22884.67 2381.32 113.15 114.08 112.41 105.78 03 infiltrate 2135.30 0.00 2002.34 132.96 10.07 9.88 14.16 05 filtered 2135.30 0.00 2002.34 132.96 06 normal outlet 3271.12 3022.45 79.60 169.06 9.19 8.83 116.83 12.91 08 sedimen + decay 58870.33 36003.11 20801.23 2065.99 09 total inflow 64298.34 39032.35 22884.67 2381.32 113.15 114.08 112.41 105.78 10 surface outflow 3271.12 3022.45 79.60 169.06 9.19 8.83 116.83 12.91 12 total outflow 3271.12 3022.45 79.60 169.06 5.76 8.83 0.39 7.52 13 total trapped 61005.63 36003.11 22803.57 2198.95 14 storage increase 8.28 6.79 1.50 0.00 15 mass balance check 13.31 0.00 0.00 13.31 Load Reduction (%)94.88 92.24 99.65 92.34 Variable: TP Loads(lbs)Concs (ppm) Mass Balance Term OVERALL Pond 1 Pond 2Wetland 1 Buffer OVERALL Pond 1 Pond 2Wetland 1 Buffer 01 watershed inflows 204.79 124.04 73.02 7.73 0.36 0.36 0.36 0.34 03 infiltrate 29.18 0.00 27.74 1.43 0.14 0.14 0.15 05 filtered 29.18 0.00 27.74 1.43 06 normal outlet 47.45 45.14 0.37 1.94 0.13 0.13 0.55 0.15 08 sedimen + decay 128.06 78.87 44.88 4.31 09 total inflow 204.79 124.04 73.02 7.73 0.36 0.36 0.36 0.34 10 surface outflow 47.45 45.14 0.37 1.94 0.13 0.13 0.55 0.15 12 total outflow 47.45 45.14 0.37 1.94 0.08 0.13 0.00 0.09 13 total trapped 157.23 78.87 72.62 5.74 14 storage increase 0.05 0.03 0.02 0.00 15 mass balance check 0.05 0.00 0.00 0.05 Load Reduction (%)76.78 63.58 99.46 74.26 P8 Urban Catchment Model, Version 3.5 Run Date 09/22/20 Case existing conditions_2020.09.21.p8c FirstDate 01/01/08 Precip(in) 319.0 Title Bluffs at Lake Lucy Existing LastDate 12/31/18 Rain(in) 286.65 PrecFile MSP4918.pcp Events 827 Snow(in) 32.33 PartFile nurp50.p8p TotalHrs 96312 TotalYrs 10.99 Case Title Bluffs at Lake Lucy Existing Case Data File existing conditions_2020.09.21.p8c Path C:\Users\LWehr\AE2S\Sathre - Galphin\P8\ Case Notes: Storm Data File MSP4918.pcp Particle File nurp50.p8p Air Temp File File MSP4918.tem Time Steps Per Hour 4 Minimum Inter-Event Time (hrs) 10 Maximum Continuity Error % 2 Rainfall Breakpoint (inches) 0.8 Precipitation Scale Factor 1 Air Temp Offset (deg-F) 0 Loops Thru Storm File 10 Simulation Dates Start 1/1/2008 Keep 1/1/2008 Stop 12/31/2018 Max Snowfall Temperature (deg-f) 32.0 SnowMelt Temperature (deg-f) 32.0 Snowmelt Coef (in/degF-Day) 0.06 Soil Freeze Temp (deg-F) 32.0 Snowmelt Abstraction Factor 1.00 Evapo-Trans. Calibration Factor 1.00 Growing Season Start Month 5 Growing Season End Month 10 5-Day Antecedent Rainfall + Runoff (inches) CN Antecedent Moisture Condition AMC-II AMC-III Growing Season 1.40 2.10 NonGrowing Season 0.50 1.10 Watershed Data Watershed Name BLL_PR503 W1n W2 WL A Runoff to Device Offsite Offsite Offsite Offsite Offsite Infiltration to Device Watershed Area 0.03 14.05 2.35 5.3 0.52 SCS Curve Number (Pervious) 74 71 71 71 72 Scale Factor for Pervious Runoff Load 1 1 1 1 1 Indirectly Connected Imperv Fraction 0 0 0 0 0 UnSwept Impervious Fraction 0 0.01 0.03 0 0 UnSwept Depression Storage (inches) 0.06 0.06 0.06 0.06 0.06 UnSwept Imperv. Runoff Coefficient 1 1 1 1 1 UnSwept Scale Factor for Particle Loads 1 1 1 1 1 Swept Impervious Fraction 0 0 0 0 0 Swept Depression Storage (inches) 0.06 0.06 0.06 0.06 0.06 Swept Imperv. Runoff Coefficient 1 1 1 1 1 Swept Scale Factor for Particle Loads 1 1 1 1 1 Sweeping Frequency 0 0 0 0 0 Bluffs at Lake Lucy Existing Model Sweeping Efficiency 1 1 1 1 1 Sweeping Start Date (MMDD) 101 101 101 101 101 Sweeping Stop Date (MMDD) 1231 1231 1231 1231 1231 Device Data Device Name Offsite Device Type PIPE Infiltration Outlet Normal Outlet Spillway Outlet Particle Removal Scale Factor Bottom Elevation (ft) Bottom Area (acres) Permanent Pool Area (acres) Permanent Pool Volume (ac-ft) Perm Pool Infilt Rate (in/hr) Flood Pool Area (acres) Flood Pool Volume (ac-ft) Flood Pool Infilt Rate (in/hr) Infilt Basin Void Fraction (%) Detention Pond Outlet Parameters Outlet Type Outlet Orifice Diameter (in) Orifice Discharge Coef Outlet Weir Length (ft) Weir Discharge Coef Perforated Riser Height (ft) Number of Holes in Riser Holes Diameter Flood Pool Drain Time (hrs) Swale Parameters Length of Flow Path (ft) Slope of Flow Path % Bottom Width (ft) Side Slope (ft-v/ft-h) Maximum Depth of Flow (ft) Mannings n Constant Hydraulic Model Pipe, Splitter, Aquifer Parameter Hydraulic Res. Time (hrs) 0 Particle Data Particle File nurp50.p8p Particle Class P0% P10% P30% P50% P80% Filtration Efficiency (%) 90 100 100 100 100 Settling Velocity (ft/hr) 0 0.03 0.3 1.5 15 First Order Decay Rate (1/day) 0 0 0 0 0 2nd Order Decay (1/day-ppm) 0 0 0 0 0 Impervious Runoff Conc (ppm) 1 0 0 0 0 Pervious Runoff Conc (ppm) 1 100 100 100 200 Pervious Conc Exponent 0 1 1 1 1 Accum. Rate (lbs-ac-day) 0 1.75 1.75 1.75 3.5 Particle Removal Rate (1/day) 0 0.25 0.25 0.25 0.25 Washoff Coefficient 0 20 20 20 20 Washoff Exponent 0 2 2 2 2 Sweeper Efficiency 0 0 0 5 15 Water Quality Component Data Component Name TSS TP TKN CU PB ZN HC Water Quality Criteria (ppm) Level 1 5 0.025 2 2 0.02 5 0.1 Level 2 10 0.05 1 0.0048 0.014 0.0362 0.5 Level 3 20 0.1 0.5 0.02 0.15 0.38 1 Content Scale Factor 1 1 1 1 1 1 1 Particle Composition (mg/kg) P0%0 99000 600000 13600 2000 64000 250000 P10% 1000000 3850 15000 340 180 1600 22500 P30% 1000000 3850 15000 340 180 1600 22500 P50% 1000000 3850 15000 340 180 1600 22500 P80% 1000000 0 0 340 180 0 22500 Mass Balances by Device and Variable Device: Offsite Type: PIPE Variable: P0% Mass Balance Term Flow_acft Flow_cfs Load_lbs Load_lbs/yr Conc_ppm 01 watershed inflows 39.43 0.00 107.2 9.8 1.00 06 normal outlet 39.43 0.00 107.2 9.8 1.00 09 total inflow 39.43 0.00 107.2 9.8 1.00 10 surface outflow 39.43 0.00 107.2 9.8 1.00 12 total outflow 39.43 0.00 107.2 9.8 1.00 Reduction (%) 0.00 0.00 0.0 0.0 Device: Offsite Type: PIPE Variable: P10% Mass Balance Term Flow_acft Flow_cfs Load_lbs Load_lbs/yr Conc_ppm 01 watershed inflows 39.43 0.00 2195.4 199.8 20.49 06 normal outlet 39.43 0.00 2195.4 199.8 20.49 09 total inflow 39.43 0.00 2195.4 199.8 20.49 10 surface outflow 39.43 0.00 2195.4 199.8 20.49 12 total outflow 39.43 0.00 2195.4 199.8 20.49 Reduction (%) 0.00 0.00 0.0 0.0 Device: Offsite Type: PIPE Variable: P30% Mass Balance Term Flow_acft Flow_cfs Load_lbs Load_lbs/yr Conc_ppm 01 watershed inflows 39.43 0.00 2195.4 199.8 20.49 06 normal outlet 39.43 0.00 2195.4 199.8 20.49 09 total inflow 39.43 0.00 2195.4 199.8 20.49 10 surface outflow 39.43 0.00 2195.4 199.8 20.49 12 total outflow 39.43 0.00 2195.4 199.8 20.49 Reduction (%) 0.00 0.00 0.0 0.0 Device: Offsite Type: PIPE Variable: P50% Mass Balance Term Flow_acft Flow_cfs Load_lbs Load_lbs/yr Conc_ppm 01 watershed inflows 39.43 0.00 2195.4 199.8 20.49 06 normal outlet 39.43 0.00 2195.4 199.8 20.49 09 total inflow 39.43 0.00 2195.4 199.8 20.49 10 surface outflow 39.43 0.00 2195.4 199.8 20.49 12 total outflow 39.43 0.00 2195.4 199.8 20.49 Reduction (%) 0.00 0.00 0.0 0.0 Device: Offsite Type: PIPE Variable: P80% Mass Balance Term Flow_acft Flow_cfs Load_lbs Load_lbs/yr Conc_ppm 01 watershed inflows 39.43 0.00 4390.8 399.6 40.97 06 normal outlet 39.43 0.00 4390.8 399.6 40.97 09 total inflow 39.43 0.00 4390.8 399.6 40.97 10 surface outflow 39.43 0.00 4390.8 399.6 40.97 12 total outflow 39.43 0.00 4390.8 399.6 40.97 Reduction (%) 0.00 0.00 0.0 0.0 Device: Offsite Type: PIPE Variable: TSS Mass Balance Term Flow_acft Flow_cfs Load_lbs Load_lbs/yr Conc_ppm 01 watershed inflows 39.43 0.00 10976.9 999.1 102.43 06 normal outlet 39.43 0.00 10976.9 999.1 102.43 09 total inflow 39.43 0.00 10976.9 999.1 102.43 10 surface outflow 39.43 0.00 10976.9 999.1 102.43 12 total outflow 39.43 0.00 10976.9 999.1 102.43 Reduction (%) 0.00 0.00 0.0 0.0 Device: Offsite Type: PIPE Variable: TP Mass Balance Term Flow_acft Flow_cfs Load_lbs Load_lbs/yr Conc_ppm 01 watershed inflows 39.43 0.00 36.0 3.3 0.34 06 normal outlet 39.43 0.00 36.0 3.3 0.34 09 total inflow 39.43 0.00 36.0 3.3 0.34 10 surface outflow 39.43 0.00 36.0 3.3 0.34 12 total outflow 39.43 0.00 36.0 3.3 0.34 Reduction (%) 0.00 0.00 0.0 0.0 Device: Offsite Type: PIPE Variable: TKN Mass Balance Term Flow_acft Flow_cfs Load_lbs Load_lbs/yr Conc_ppm 01 watershed inflows 39.43 0.00 163.1 14.8 1.52 06 normal outlet 39.43 0.00 163.1 14.8 1.52 09 total inflow 39.43 0.00 163.1 14.8 1.52 10 surface outflow 39.43 0.00 163.1 14.8 1.52 12 total outflow 39.43 0.00 163.1 14.8 1.52 Reduction (%) 0.00 0.00 0.0 0.0 Device: Offsite Type: PIPE Variable: CU Mass Balance Term Flow_acft Flow_cfs Load_lbs Load_lbs/yr Conc_ppm 01 watershed inflows 39.43 0.00 5.2 0.5 0.05 06 normal outlet 39.43 0.00 5.2 0.5 0.05 09 total inflow 39.43 0.00 5.2 0.5 0.05 10 surface outflow 39.43 0.00 5.2 0.5 0.05 12 total outflow 39.43 0.00 5.2 0.5 0.05 Reduction (%) 0.00 0.00 0.0 0.0 Device: Offsite Type: PIPE Variable: PB Mass Balance Term Flow_acft Flow_cfs Load_lbs Load_lbs/yr Conc_ppm 01 watershed inflows 39.43 0.00 2.2 0.2 0.02 06 normal outlet 39.43 0.00 2.2 0.2 0.02 09 total inflow 39.43 0.00 2.2 0.2 0.02 10 surface outflow 39.43 0.00 2.2 0.2 0.02 12 total outflow 39.43 0.00 2.2 0.2 0.02 Reduction (%) 0.00 0.00 0.0 0.0 Device: Offsite Type: PIPE Variable: ZN Mass Balance Term Flow_acft Flow_cfs Load_lbs Load_lbs/yr Conc_ppm 01 watershed inflows 39.43 0.00 17.4 1.6 0.16 06 normal outlet 39.43 0.00 17.4 1.6 0.16 09 total inflow 39.43 0.00 17.4 1.6 0.16 10 surface outflow 39.43 0.00 17.4 1.6 0.16 12 total outflow 39.43 0.00 17.4 1.6 0.16 Reduction (%) 0.00 0.00 0.0 0.0 Device: Offsite Type: PIPE Variable: HC Mass Balance Term Flow_acft Flow_cfs Load_lbs Load_lbs/yr Conc_ppm 01 watershed inflows 39.43 0.00 273.8 24.9 2.55 06 normal outlet 39.43 0.00 273.8 24.9 2.55 09 total inflow 39.43 0.00 273.8 24.9 2.55 10 surface outflow 39.43 0.00 273.8 24.9 2.55 12 total outflow 39.43 0.00 273.8 24.9 2.55 Reduction (%) 0.00 0.00 0.0 0.0 The Bluffs at Lake Lucy Stormwater Management Plan Appendix E October 2020 www.ae2s.com Appendix E: Stormwater Performance Based Credit Calculator Results 1.Precipitation Station (pull- down menu)2.Region (from Cell 1)3. Surface (pull-down menu)4. Tree Selection Tree Type Tree Size Minneapolis, MN Midwest Grass - HSG C BDM Broadleaf Deciduous Medium 5.Unit Reduction (cf/inch rainfall/inch DBH) (based on cells 2-4) 0.5368 6. Representative Storm (inches) 0.7300 7. Number of Trees Planted Typical DBH (inches) for Guidance)8. DBH (inches)Tree Canopy Area (sf) (Suggested) 9. Tree Canopy Area (sf) (Entered) 296 17.10 17 275105 190692 10. Runoff Reduction for the Representative Storm (cf)11. Base CN 12. "Base" Runoff in the Area Beneath the Tree Canopy (cf) 13. Runoff for the Representative Storm (cf)14. Runoff In Inches 15. Adjusted Curve Number 1972.0 70.95 949.06 0.00 0.0000 40.65 90th Percentile Storm Event (for Guidance)16. Design Storm (inches)17. Runoff from the Area Below the Tree Canopy (cf) 1.048 1.1 2552.55 Land Cover Type (Site Area) 18a-e. Site Areas (sf) 19. Site Curve Number 20. Site Level Runoff Without Trees (cf) Grass - HSG A 76.06 25238.46 Grass - HSG B Grass - HSG C 1129511 Grass - HSG D Impervious Cover 264409 Total 1393920 21. Runoff Volume for the Design Storm with Trees (cf) 22. Runoff Reduction Volume (cf) 145.32 2407.2 23a.TN Concentration (mg/L) 23b.TP Concentration (mg/L) 23c.TSS Concentration (mg/L) 1.45 0.25 140 24a.TN Load Reduction (lbs) 24b. TP Load Reduction (lbs) 24c.TSS Load Reduction (lbs) 0.2178 0.0376 21.0296 25. Canopy Scale 94.31% 26. Site Scale 9.54% % Reductions Step 1: Enter Tree Type and Site Data Step 2: Calculate Unit Runoff Reduction Step 4: Enter the tree DBH, number of trees, canopy area and DBH Step 7: Calculate the runoff reduction volume for the design storm Step 8: Calculate the TN, TP and TSS reductions in urban runoff for the Design Storm (Cells 24a-c calculated from cell 22 and corresponding cells in 23a-c) Step 3: Identify the Representative Storm for this location Step 5: Calculate the Runoff Reductiion Volume for the Repesentative Storm, and calculate a revised curve number for the treed area. Step 9: Represent as Percentages Step 6: Calculate "Non-Tree" Runoff Volumes at the site and canopy scales for the Design Storm The Bluffs at Lake Lucy Stormwater Management Plan Appendix F October 2020 www.ae2s.com Appendix F: MIDS Output Project Information Calculator Version:Version 3: January 2017 Project Name:The Bluffs at Lake Lucy User Name / Company Name: AE2S Date:September 23, 2020 Project Description: Construction Permit?:No Site Information Retention Requirement (inches):1.1 Site's Zip Code:55317 Annual Rainfall (inches):29.9 Phosphorus EMC (mg/l):0.3 TSS EMC (mg/l):54.5 Total Site Area Land Cover A Soils (acres) B Soils (acres) C Soils (acres) D Soils (acres) Total (acres) Forest/Open Space -Undisturbed, protected forest/open space or reforested land 1.1 1.1 Managed Turf -disturbed, graded for yards or other turf to be mowed/managed 5.77 5.77 Impervious Area (acres) 3.13 Total Area (acres) 10 Site Areas Routed to BMPs Land Cover A Soils (acres) B Soils (acres) C Soils (acres) D Soils (acres) Total (acres) Forest/Open Space -Undisturbed, protected forest/open space or reforested land 1.1 1.1 Managed Turf -disturbed, graded for yards or other turf to be mowed/managed 5.77 5.77 Impervious Area (acres) 3.13 Total Area (acres) 10 Summary Information Performance Goal Requirement Performance goal volume retention requirement: 12498 ft3 Volume removed by BMPs towards performance goal: 5285 ft³ Percent volume removed towards performance goal 42 % Annual Volume and Pollutant Load Reductions Post development annual runoff volume 10.0016 acre-ft Annual runoff volume removed by BMPs: 4.7463 acre-ft Percent annual runoff volume removed: 47 % Post development annual particulate P load:4.489 lbs Annual particulate P removed by BMPs: 2.13 lbs Post development annual dissolved P load: 3.673 lbs Annual dissolved P removed by BMPs: 1.743 lbs Percent annual total phosphorus removed:47 % Post development annual TSS load: 1482.6 lbs Annual TSS removed by BMPs: 703.6 lbs Percent annual TSS removed:47 % BMP Summary Performance Goal Summary BMP Name BMP Volume Capacity (ft3) Volume Recieved (ft3) Volume Retained (ft3) Volume Outflow (ft3) Percent Retained (%) Irrigation 5285 12498 5285 7213 42 Annual Volume Summary BMP Name Volume From Direct Watershed (acre-ft) Volume From Upstream BMPs (acre-ft) Volume Retained (acre-ft) Volume outflow (acre-ft) Percent Retained (%) Irrigation 10.0016 0 4.7463 5.2553 47 Particulate Phosphorus Summary BMP Name Load From Direct Watershed (lbs) Load From Upstream BMPs (lbs) Load Retained (lbs) Outflow Load (lbs) Percent Retained (%) Irrigation 4.4887 0 2.1301 2.3586 47 Dissolved Phosphorus Summary BMP Name Load From Direct Watershed (lbs) Load From Upstream BMPs (lbs) Load Retained (lbs) Outflow Load (lbs) Percent Retained (%) Irrigation 3.6726 0 1.7429 1.9297 47 TSS Summary BMP Name Load From Direct Watershed (lbs) Load From Upstream BMPs (lbs) Load Retained (lbs) Outflow Load (lbs) Percent Retained (%) Irrigation 1482.63 0 703.59 779.04 47 BMP Schematic The Bluffs at Lake Lucy Stormwater Management Plan Appendix G October 2020 www.ae2s.com Appendix G: Outlet Structure Details