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Fox Hill Drive SWMP-10-21-22 FFooxx HHiillll DDrriivvee Storm Water Management Study Chanhassen, MN Prepared For: Chad Mayes Denali Custom Homes Prepared By: Alliant Engineering, Inc. 733 Marquette Ave, Suite 700 Minneapolis, MN 55402 October 21st, 2021 Fox Hill Drive _ Stormwater Management Study October 21st, 2022 Alliant Engineering, Inc. Page 1 of 9 210-122 Introduction Included in this report are the materials necessary for review of the proposed stormwater management plan for the Fox Hill Drive residential development in Chanhassen, Minnesota. This stormwater management plan was designed to meet the rules established by the City of Chanhassen and Riley Purgatory Bluff Creek Watershed District. Background This hydrologic study was conducted to analyze the stormwater treatment requirements for the proposed Fox Hill Drive development in Chanhassen, Minnesota. The goal of the study is to design stormwater treatment facilities that can handle the increased impervious cover resulting from the new development. This study compares the following two scenarios:  Existing conditions – Unmaintained Wooded Area with lots of tree litter and debris with single family residential home.  Proposed conditions –Low-Density Single-Family Development Project Area Total Site Area based on boundary (acres) 2.465 Total SWMP Area including Offsite Area (acres) 3.015 Existing Site Impervious (acres) 0.076 Post Construction Site Impervious (acres) 0.537 New (Increase) in Site Impervious Area (acres)* 0.461 Total Disturbed Area (acres) 1.455 * The proposed development includes a total of 4 single family lots. The property currently contains topography varying in elevation from 970 ft (high point near north central point of the site) to 898 ft (Lotus Lake edge). Please refer to the preliminary plat submittal plan documents for additional design information on the proposed development. The stormwater management plan for proposed site conditions will meet the guidelines set forth by the City of Chanhassen and RPBCWD regarding stormwater discharge rate control, water quality, and volume abstraction. The plan will also meet rules for erosion and sediment control. The following criterion was used in designing the stormwater management system: Rate Control:  Post-development peak runoff rates from the site for the 2, 10, 100-yr, 10 day-100 yr Snowmelt MSE 3 24-hr storm events must not be greater than the existing condition rates. Water Quality: Fox Hill Drive _ Stormwater Management Study October 21st, 2022 Alliant Engineering, Inc. Page 2 of 9 210-122  If the project conforms to the 1.1-inch rule there is no further pollutant removal requirement  No net increase for TSS, TP, and annual volume runoff Infiltration/Volume Control:  Infiltration of stormwater is required for a volume that is equal to or greater than 1.1 inches of runoff from the new impervious area created by the development.  Infiltration should occur within 48 hours or less. Wetland Protection:  Proposed discharge to wetland should meet the watershed criteria for a medium grade wetland  Discharge to Wetland 1 must meet abstraction requirements or 90% TSS and 60% TP. Runoff Rate Control All rate control calculations have been performed using the SCS method via HydroCAD software. HydroCAD curve numbers were used for all calculations. Three events were modeled including: the 2- year, 10-year and 100-year, 10 day-100 yr Snowmelt event, MSE 3 24-hour storm events with ATLAS-14 precipitation amounts of 2.87, 4.26, 7.38, and 7.20 inches used, respectively. The analysis demonstrates that the proposed peak rates of runoff from the site are equal or less than the pre-development rates for all modeled events. Existing Conditions The existing project area includes a total on-site impervious surface area of 0.076 acres The site currently consists of primarily open space with a single family home, forested areas, and green space. Soil types were determined from the Geotechnical Report or Web Soil Survey (attached in Appendix). Based on given information the site was modeled in HydroCAD with generally B soils. Curve numbers were approximated based on land cover types from aerial photos. Offsite drainage flows through the site due to being downstream of higher ground. Offsite area was included in the design to ensure correct water levels in existing and preserved wetlands. To compare peak discharge rates and volumes for the existing and proposed conditions, flows were analyzed at 3 discharge locations. Refer to existing conditions drainage map and HydroCAD results for additional information and calculations. Pre-Development Runoff Rates as calculated by HydroCAD: Rainfall Event Wetland 1 Northwest Lotus Lake [cfs] [cfs] [cfs] 2-year (2.87”) 3.82 4.09 2.73 10-year (4.26”) 7.06 7.84 5.23 100-year (7.38”) 14.74 16.80 11.23 10 day-100 yr Snowmelt 0.27 0.33 0.23 Fox Hill Drive _ Stormwater Management Study October 21st, 2022 Alliant Engineering, Inc. Page 3 of 9 210-122 Proposed Conditions The proposed development will disturb 1.455 acres and includes a total on-site impervious surface area and offsite disturbed or new impervious of 0.446 acres. The proposed development will use multiple infiltration BMP’s and pretreatment to provide water quality, rate control, and volume abstraction for the development. This best management practice (BMP) was the best option suitable for site conditions. Rate Control The proposed stormwater management plan decreases the total peak discharge rates to at or below existing conditions for all modeled events. Refer to proposed conditions drainage map and HydroCAD results for additional information and calculations. Post-Development Runoff Rates as calculated by HydroCAD: Rainfall Event Wetland 1 Northwest Lotus Lake [cfs] [cfs] [cfs] 2-year (2.87”) 3.04 0.74 1.27 10-year (4.26”) 6.02 2.79 3.03 100-year (7.38”) 12.71 15.96 8.19 10 day-100 yr Snowmelt 0.27 0.33 0.23 See preliminary plat/final plat plans for EOF info, HWL’s and OCS structure details. Stormwater Volume Abstraction Volume Required Because the project disturbs more than 50% of the existing site impervious area and increases the overall site impervious area by more than 50%, the total volume required must be a 1.1” abstraction of the entire site impervious area, per RPBCWD rules. Infiltration volumes calculated on maximum allowable impervious for block 2 lots 1-3 per City 25% impervious rule or maximum build per setback requirement (see PDRN). Parcel impervious = 21,744 SF (0.499 acres) Required Abstraction for development: 1.1 𝑖𝑛 (𝑎𝑏𝑠𝑡𝑟𝑎𝑐𝑡𝑖𝑜𝑛)∗1 𝑓𝑡 12 𝑖𝑛∗ (24,000 𝑠𝑓) = 2,200 𝑐𝑓 The site will meet abstraction through multiple infiltration BMP’s. Fox Hill Drive _ Stormwater Management Study October 21st, 2022 Alliant Engineering, Inc. Page 4 of 9 210-122 Volume Provided For calculation purposes, the BMP’s were modeled using soils with an infiltration rate of 0.45 in/hr. See table below for infiltration depth in each basin. OCS to be constructed to control release of runoff and set infiltration depths. See planset for OCS details. See planset and Geotech report or Web Soil Survey for further details. Infiltration Volume Summary BMP Location Volume Required (CUFT) Volume Provided (CUFT) Depth (ft) Infiltration Rate (in/hr) Drawdown Time (hrs) Block 1 Lot 1 540 544 1.41’ 0.3525 In/hr 48 Block 1 Lot 2 371 372 0.66’ 0.165 in/hr 48 Block 1 Lot 3 417 417 0.8 0.2 in/hr 48 Block 2 - Lots 1 and 2 shall be overexcavated until SP or SP-SM soils are encountered, backfill with free draining material. Water Quality Water quality was modeled in MIDS to meet both watershed and city requirements for nutrient removal. Additionally, sump manholes will be installed in the structures immediately upstream of the BMP before discharging to the BMP. MIDS was used to model to show no net increase in TP, TSS and Annual Volume for BMP’s. See MIDS results in Appendix. Discharge to medium grade wetlands (wetland 1) must meet 90% TSS and 60% TP or the abstraction requirement, however buffer is self-treating so all disturbed area that is buffered does not require treatment, the remaining area and impervious will be treated by an infiltration BMP. Summary of MIDS results: Total TSS Loading (lbs) TP Loading (lbs) Existing 58.9 0.324 Proposed 42.5 0.234 Removal % 78% 78 Wetland Protection: As shown when discussing proposed runoff, rates going to the wetland will be below existing rates for the 2-, 10-, 100-year events and 10 day-100 year snowmelt. Additionally, the infiltration basin will be the primary outlet for stormwater, which meets the required phosphorus and TSS removal efficiency required for the wetland. Direct discharge to the wetland will only occur as part of undisturbed existing drainage areas. Fox Hill Drive _ Stormwater Management Study October 21st, 2022 Alliant Engineering, Inc. Page 5 of 9 210-122 The watershed has 4 requirements for wetlands shown below: Wetland 1 Rainfall Event Ex. Bounce Ex. Inundation Pr. Bounce Pr. Inundation [ft] [hrs] [ft] [hrs] 1-year (2.50”) - 12.0 - 12.0 2-year (2.87”) - 12.0 - 12.0 10-year (4.26”) 0.19 12.2 0.0 12.2 The above tables summarize the required info. Based on the runoff rates and volume routed to the wetland there will be no detrimental effects to these wetlands from the proposed development. The runout elevation for the wetland will not be changed. Watershed Rule G Criteria: 3.1 Use of the bed or banks of a waterbody must meet: a a demonstrated public benefit for projects affecting public waters or b a demonstrated specific need for all other waterbodies. 3.2 Construction, replacement or improvement of a waterbody crossing in contact with the bed or bank of a waterbody: a Will retain adequate hydraulic capacity and assure no net increase in the flood stage of the pertinent waterbody; Fox Hill Drive _ Stormwater Management Study October 21st, 2022 Alliant Engineering, Inc. Page 6 of 9 210-122 b Will retain adequate navigational capacity pursuant to the waterbody’s recreational classification. c Must not be reasonably likely to affect water quality, change the existing flowline/gradient, or cause increased scour, erosion or sedimentation; d Will provide wildlife passage along each bank and riparian area and fish passage in the waterbody by means that account for wildlife that are native to the area or may be present. e Will represent the ‘minimal impact’ solution to a specific need with respect to other reasonable alternatives, based on analysis of at least two reasonable alternatives, one of which may be not undertaking the proposed work. 3.3 Construction or improvement of an outfall structure in contact with the bed or bank of a waterbody must: a incorporate a stilling-basin, surge-basin, energy dissipator, or other device or devices when necessary to minimize disturbance and erosion of natural shoreline and bed resulting from peak flows; b when feasible, utilize discharge to stormwater treatment ponds, artificial stilling or sedimentation basins, or other devices for entrapment of floating trash and litter, sand, silt, debris, and organic matter prior to discharge to public waters; and c use natural or artificial ponding areas to provide water retention and storage for the reduction of peak flows into waterbodies to the greatest extent possible 3.5 Placement or replacement of a structure must: a Represent the minimal impact solution to a specific need with respect to all other reasonable alternatives; b Represent the minimum encroachment, change or damage to the environment, particularly the ecology of the waters, necessary to achieve the intended purpose; c Comply with the District floodplain rule; and d Not be reasonably likely to cause adverse effects to water quality and the physical or biological character of the waterbody. 3.1 a Currently there is no secondary emergency access to Big Woods Blvd resulting in a 1200 LF dead end street which exceeds city standards. To treat the proposed stub road and the fact that any existing outfall to Lotus Lake is not in close enough proximity to connect to a new outfall is being proposed. The outfall is being proposed in a manner to minimize disturbance to Lotus Lake and existing shoreline. As part of the work for the development the property owner will be restoring the shoreline which has been neglected further providing a benefit to Lotus Lake. 3.2a The flood storage of Lotus Lake will not change as part of this work. In existing conditions the all existing impervious from Fox Hill Drive is routed to the lake without treatment. Proposed will treat 2400 SF of existing fox hill drive. All rate control is met. b. Will not change navigability. As the streamline will be reinforced/protected. Fox Hill Drive _ Stormwater Management Study October 21st, 2022 Alliant Engineering, Inc. Page 7 of 9 210-122 c. See b and calculations for treatment. d. will not inhibit wildlife passage as it is significantly below the earth’s surface until it’s outlet where the impact will be minimal. e. see response above. 3.3 a incorporates rip rap and utilizes a natural stilling basin based on existing topography b. See 3.3a c complies with district floodplain as no fill is placed below the HWL of Lotus Lake. d. see calculations for water treatment Erosion and Sediment Control Plan The following Best Management Practices (BMP’s) are proposed for the project. Temporary erosion control devices shown on the grading plan to provide sediment control during project construction include:  Silt fence  Rock construction entrance  Inlet sediment barriers at catch basins  Diversion berms  Erosion Control Blanket Permanent erosion control devices shown to be installed include:  Rip rap at storm sewer pipe outlets  Turf reinforcement mat at emergency spillways  Turf establishment including seeding, sodding, vegetation, etc. Conclusion Alliant Engineering believes that the proposed stormwater management plan is acceptable for all parties involved. The total proposed peak discharge rates for the 2-year, 10-year, 100-year and 10 day-100 yr snowmelt 24-hour storm events will be matched or reduced from existing conditions modeled rates. The proposed stormwater management system meets the volume abstraction requirements with the use of an infiltration/filtration basin. Water quality requirements are provided through the same infiltration/filtration basin and provide the TP and TSS removal efficiencies required. The proposed grading and erosion control plan will utilize BMPs whenever possible to provide adequate erosion control measures to prevent erosion and contain sediment during construction. Fox Hill Drive _ Stormwater Management Study October 21st, 2022 Alliant Engineering, Inc. Page 8 of 9 210-122 Please call me at 612-767-9356 with any questions or comments regarding storm water issues for The Fox Hill Drive development project. Sincerely, Seth Loken, PE Alliant Engineering, Inc. CC: File 210-122 Denali Custom Homes, LLC Fox Hill Drive _ Stormwater Management Study October 21st, 2022 Alliant Engineering, Inc. Page 9 of 9 210-122 APPENDIX - Existing Conditions Drainage & Cover Map - Existing Conditions - HydroCAD Results - Proposed Conditions Drainage & Cover Map - Proposed Conditions – HydroCAD Results - MIDS Results - Geotechnical Report or Web Soil Survey - Wetland Delineation Report S20°28'26"E 125.32N22°37'50"W 125.86N74°50'50"E 825.86N74°50'50"E 821.1032+/-41+/-1FOX HILL DRIVE EXISTING DRAINAGE MAP 733 Marquette AvenueMinneapolis, MN 55402612.758.3080www.alliant-inc.comSuite 700FOR REVIEW ONLYPRELIMINARYNOT FOR CONSTRUCTIONLEGEND E-1 Discharge to Northwest E-2 Discharge to Wetland E-3 Existing Home and discharge to Lotus lake OFF-1 Offsite Discharge to Wetland 2P Wetland 1 1L Lotus Lake3L NorthWest Discharge Routing Diagram for edrn Prepared by {enter your company name here}, Printed 8/15/2022 HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcat Reach Pond Link edrn Printed 8/15/2022Prepared by {enter your company name here} Page 2HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Rainfall Events Listing (selected events) Event# Event Name Storm Type Curve Mode Duration (hours) B/B Depth (inches) AMC 1 2-Year MSE 24-hr 3 Default 24.00 1 2.87 2 2 10-Year MSE 24-hr 3 Default 24.00 1 4.27 2 3 100-Year MSE 24-hr 3 Default 24.00 1 7.41 2 4 NURP/1 year MSE 24-hr 3 Default 24.00 1 2.50 2 edrn Printed 8/15/2022Prepared by {enter your company name here} Page 3HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Area Listing (selected nodes) Area (acres) CN Description (subcatchment-numbers) 0.128 80 >75% Grass cover, Good, HSG D (E-3) 0.256 98 Water Surface, 0% imp, HSG D (E-2, E-3, OFF-1) 2.515 79 Woods, Fair, HSG D (E-1, E-2, E-3, OFF-1) 2.899 81 TOTAL AREA edrn Printed 8/15/2022Prepared by {enter your company name here} Page 4HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Soil Listing (selected nodes) Area (acres) Soil Group Subcatchment Numbers 0.000 HSG A 0.000 HSG B 0.000 HSG C 2.899 HSG D E-1, E-2, E-3, OFF-1 0.000 Other 2.899 TOTAL AREA MSE 24-hr 3 2-Year Rainfall=2.87"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 5HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment E-1: Discharge to Northwest Runoff = 0.74 cfs @ 12.11 hrs, Volume= 0.029 af, Depth= 1.09" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.87" Area (ac) CN Description 0.315 79 Woods, Fair, HSG D 0.315 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.8 176 0.0842 1.04 Lag/CN Method, Summary for Subcatchment E-2: Discharge to Wetland Runoff = 2.28 cfs @ 12.10 hrs, Volume= 0.090 af, Depth= 1.33" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.87" Area (ac) CN Description 0.685 79 Woods, Fair, HSG D 0.124 98 Water Surface, 0% imp, HSG D 0.809 Weighted Average 0.809 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.4 125 0.1606 1.48 Lag/CN Method, Summary for Subcatchment E-3: Existing Home and discharge to Lotus lake Runoff = 2.73 cfs @ 12.13 hrs, Volume= 0.118 af, Depth= 1.20" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.87" Area (ac) CN Description 0.077 98 Water Surface, 0% imp, HSG D 0.973 79 Woods, Fair, HSG D 0.128 80 >75% Grass cover, Good, HSG D 1.178 Weighted Average 1.178 100.00% Pervious Area MSE 24-hr 3 2-Year Rainfall=2.87"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 6HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.9 477 0.1261 1.61 Lag/CN Method, Summary for Subcatchment OFF-1: Offsite Discharge to Wetland Runoff = 1.57 cfs @ 12.11 hrs, Volume= 0.062 af, Depth= 1.24" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.87" Area (sf) CN Description 23,615 79 Woods, Fair, HSG D 2,390 98 Water Surface, 0% imp, HSG D 26,005 Weighted Average 26,005 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.3 104 0.0481 0.75 Lag/CN Method, Summary for Pond 2P: Wetland 1 Inflow Area = 1.406 ac, 0.00% Impervious, Inflow Depth = 1.29" for 2-Year event Inflow = 3.82 cfs @ 12.10 hrs, Volume= 0.151 af Outflow = 3.35 cfs @ 12.11 hrs, Volume= 0.147 af, Atten= 12%, Lag= 0.9 min Primary = 3.35 cfs @ 12.11 hrs, Volume= 0.147 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Starting Elev= 949.00' Surf.Area= 3,352 sf Storage= 651 cf Peak Elev= 949.18' @ 12.11 hrs Surf.Area= 5,841 sf Storage= 1,459 cf (808 cf above start) Plug-Flow detention time= 79.5 min calculated for 0.132 af (87% of inflow) Center-of-Mass det. time= 14.7 min ( 814.2 - 799.5 ) Volume Invert Avail.Storage Storage Description #1 948.40' 6,753 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 948.40 19 0 0 948.60 254 27 27 948.80 1,316 157 184 949.00 3,352 467 651 949.20 6,184 954 1,605 949.40 8,320 1,450 3,055 949.60 9,290 1,761 4,816 949.80 10,075 1,936 6,753 MSE 24-hr 3 2-Year Rainfall=2.87"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 7HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 949.05'23.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Primary OutFlow Max=3.34 cfs @ 12.11 hrs HW=949.18' TW=0.00' (Dynamic Tailwater) 1=Sharp-Crested Rectangular Weir (Weir Controls 3.34 cfs @ 1.16 fps) Summary for Link 1L: Lotus Lake Inflow Area = 1.178 ac, 0.00% Impervious, Inflow Depth = 1.20" for 2-Year event Inflow = 2.73 cfs @ 12.13 hrs, Volume= 0.118 af Primary = 2.73 cfs @ 12.13 hrs, Volume= 0.118 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Summary for Link 3L: NorthWest Discharge Inflow Area = 1.721 ac, 0.00% Impervious, Inflow Depth = 1.23" for 2-Year event Inflow = 4.09 cfs @ 12.11 hrs, Volume= 0.176 af Primary = 4.09 cfs @ 12.11 hrs, Volume= 0.176 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.27"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 8HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment E-1: Discharge to Northwest Runoff = 1.46 cfs @ 12.11 hrs, Volume= 0.057 af, Depth= 2.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.27" Area (ac) CN Description 0.315 79 Woods, Fair, HSG D 0.315 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.8 176 0.0842 1.04 Lag/CN Method, Summary for Subcatchment E-2: Discharge to Wetland Runoff = 4.16 cfs @ 12.10 hrs, Volume= 0.166 af, Depth= 2.47" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.27" Area (ac) CN Description 0.685 79 Woods, Fair, HSG D 0.124 98 Water Surface, 0% imp, HSG D 0.809 Weighted Average 0.809 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.4 125 0.1606 1.48 Lag/CN Method, Summary for Subcatchment E-3: Existing Home and discharge to Lotus lake Runoff = 5.23 cfs @ 12.12 hrs, Volume= 0.227 af, Depth= 2.31" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.27" Area (ac) CN Description 0.077 98 Water Surface, 0% imp, HSG D 0.973 79 Woods, Fair, HSG D 0.128 80 >75% Grass cover, Good, HSG D 1.178 Weighted Average 1.178 100.00% Pervious Area MSE 24-hr 3 10-Year Rainfall=4.27"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 9HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.9 477 0.1261 1.61 Lag/CN Method, Summary for Subcatchment OFF-1: Offsite Discharge to Wetland Runoff = 2.92 cfs @ 12.10 hrs, Volume= 0.117 af, Depth= 2.35" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.27" Area (sf) CN Description 23,615 79 Woods, Fair, HSG D 2,390 98 Water Surface, 0% imp, HSG D 26,005 Weighted Average 26,005 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.3 104 0.0481 0.75 Lag/CN Method, Summary for Pond 2P: Wetland 1 Inflow Area = 1.406 ac, 0.00% Impervious, Inflow Depth = 2.42" for 10-Year event Inflow = 7.06 cfs @ 12.10 hrs, Volume= 0.284 af Outflow = 6.39 cfs @ 12.11 hrs, Volume= 0.279 af, Atten= 10%, Lag= 0.9 min Primary = 6.39 cfs @ 12.11 hrs, Volume= 0.279 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Starting Elev= 949.00' Surf.Area= 3,352 sf Storage= 651 cf Peak Elev= 949.24' @ 12.11 hrs Surf.Area= 6,648 sf Storage= 1,883 cf (1,232 cf above start) Plug-Flow detention time= 51.4 min calculated for 0.264 af (93% of inflow) Center-of-Mass det. time= 10.9 min ( 800.9 - 790.0 ) Volume Invert Avail.Storage Storage Description #1 948.40' 6,753 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 948.40 19 0 0 948.60 254 27 27 948.80 1,316 157 184 949.00 3,352 467 651 949.20 6,184 954 1,605 949.40 8,320 1,450 3,055 949.60 9,290 1,761 4,816 949.80 10,075 1,936 6,753 MSE 24-hr 3 10-Year Rainfall=4.27"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 10HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 949.05'23.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Primary OutFlow Max=6.37 cfs @ 12.11 hrs HW=949.24' TW=0.00' (Dynamic Tailwater) 1=Sharp-Crested Rectangular Weir (Weir Controls 6.37 cfs @ 1.44 fps) Summary for Link 1L: Lotus Lake Inflow Area = 1.178 ac, 0.00% Impervious, Inflow Depth = 2.31" for 10-Year event Inflow = 5.23 cfs @ 12.12 hrs, Volume= 0.227 af Primary = 5.23 cfs @ 12.12 hrs, Volume= 0.227 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Summary for Link 3L: NorthWest Discharge Inflow Area = 1.721 ac, 0.00% Impervious, Inflow Depth = 2.35" for 10-Year event Inflow = 7.84 cfs @ 12.11 hrs, Volume= 0.337 af Primary = 7.84 cfs @ 12.11 hrs, Volume= 0.337 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.41"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 11HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment E-1: Discharge to Northwest Runoff = 3.17 cfs @ 12.11 hrs, Volume= 0.130 af, Depth= 4.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.41" Area (ac) CN Description 0.315 79 Woods, Fair, HSG D 0.315 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.8 176 0.0842 1.04 Lag/CN Method, Summary for Subcatchment E-2: Discharge to Wetland Runoff = 8.54 cfs @ 12.10 hrs, Volume= 0.357 af, Depth= 5.30" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.41" Area (ac) CN Description 0.685 79 Woods, Fair, HSG D 0.124 98 Water Surface, 0% imp, HSG D 0.809 Weighted Average 0.809 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.4 125 0.1606 1.48 Lag/CN Method, Summary for Subcatchment E-3: Existing Home and discharge to Lotus lake Runoff = 11.23 cfs @ 12.12 hrs, Volume= 0.502 af, Depth= 5.12" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.41" Area (ac) CN Description 0.077 98 Water Surface, 0% imp, HSG D 0.973 79 Woods, Fair, HSG D 0.128 80 >75% Grass cover, Good, HSG D 1.178 Weighted Average 1.178 100.00% Pervious Area MSE 24-hr 3 100-Year Rainfall=7.41"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 12HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.9 477 0.1261 1.61 Lag/CN Method, Summary for Subcatchment OFF-1: Offsite Discharge to Wetland Runoff = 6.15 cfs @ 12.10 hrs, Volume= 0.257 af, Depth= 5.16" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.41" Area (sf) CN Description 23,615 79 Woods, Fair, HSG D 2,390 98 Water Surface, 0% imp, HSG D 26,005 Weighted Average 26,005 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.3 104 0.0481 0.75 Lag/CN Method, Summary for Pond 2P: Wetland 1 Inflow Area = 1.406 ac, 0.00% Impervious, Inflow Depth = 5.24" for 100-Year event Inflow = 14.74 cfs @ 12.10 hrs, Volume= 0.614 af Outflow = 13.65 cfs @ 12.11 hrs, Volume= 0.610 af, Atten= 7%, Lag= 0.8 min Primary = 13.65 cfs @ 12.11 hrs, Volume= 0.610 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Starting Elev= 949.00' Surf.Area= 3,352 sf Storage= 651 cf Peak Elev= 949.37' @ 12.11 hrs Surf.Area= 8,011 sf Storage= 2,819 cf (2,168 cf above start) Plug-Flow detention time= 30.7 min calculated for 0.595 af (97% of inflow) Center-of-Mass det. time= 7.6 min ( 785.0 - 777.4 ) Volume Invert Avail.Storage Storage Description #1 948.40' 6,753 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 948.40 19 0 0 948.60 254 27 27 948.80 1,316 157 184 949.00 3,352 467 651 949.20 6,184 954 1,605 949.40 8,320 1,450 3,055 949.60 9,290 1,761 4,816 949.80 10,075 1,936 6,753 MSE 24-hr 3 100-Year Rainfall=7.41"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 13HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 949.05'23.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Primary OutFlow Max=13.64 cfs @ 12.11 hrs HW=949.37' TW=0.00' (Dynamic Tailwater) 1=Sharp-Crested Rectangular Weir (Weir Controls 13.64 cfs @ 1.85 fps) Summary for Link 1L: Lotus Lake Inflow Area = 1.178 ac, 0.00% Impervious, Inflow Depth = 5.12" for 100-Year event Inflow = 11.23 cfs @ 12.12 hrs, Volume= 0.502 af Primary = 11.23 cfs @ 12.12 hrs, Volume= 0.502 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Summary for Link 3L: NorthWest Discharge Inflow Area = 1.721 ac, 0.00% Impervious, Inflow Depth = 5.16" for 100-Year event Inflow = 16.80 cfs @ 12.11 hrs, Volume= 0.740 af Primary = 16.80 cfs @ 12.11 hrs, Volume= 0.740 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 NURP/1 year Rainfall=2.50"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 14HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment E-1: Discharge to Northwest Runoff = 0.57 cfs @ 12.11 hrs, Volume= 0.022 af, Depth= 0.84" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 NURP/1 year Rainfall=2.50" Area (ac) CN Description 0.315 79 Woods, Fair, HSG D 0.315 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.8 176 0.0842 1.04 Lag/CN Method, Summary for Subcatchment E-2: Discharge to Wetland Runoff = 1.81 cfs @ 12.10 hrs, Volume= 0.071 af, Depth= 1.06" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 NURP/1 year Rainfall=2.50" Area (ac) CN Description 0.685 79 Woods, Fair, HSG D 0.124 98 Water Surface, 0% imp, HSG D 0.809 Weighted Average 0.809 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.4 125 0.1606 1.48 Lag/CN Method, Summary for Subcatchment E-3: Existing Home and discharge to Lotus lake Runoff = 2.11 cfs @ 12.13 hrs, Volume= 0.092 af, Depth= 0.94" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 NURP/1 year Rainfall=2.50" Area (ac) CN Description 0.077 98 Water Surface, 0% imp, HSG D 0.973 79 Woods, Fair, HSG D 0.128 80 >75% Grass cover, Good, HSG D 1.178 Weighted Average 1.178 100.00% Pervious Area MSE 24-hr 3 NURP/1 year Rainfall=2.50"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 15HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.9 477 0.1261 1.61 Lag/CN Method, Summary for Subcatchment OFF-1: Offsite Discharge to Wetland Runoff = 1.23 cfs @ 12.11 hrs, Volume= 0.048 af, Depth= 0.97" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 NURP/1 year Rainfall=2.50" Area (sf) CN Description 23,615 79 Woods, Fair, HSG D 2,390 98 Water Surface, 0% imp, HSG D 26,005 Weighted Average 26,005 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.3 104 0.0481 0.75 Lag/CN Method, Summary for Pond 2P: Wetland 1 Inflow Area = 1.406 ac, 0.00% Impervious, Inflow Depth = 1.02" for NURP/1 year event Inflow = 3.01 cfs @ 12.10 hrs, Volume= 0.119 af Outflow = 2.61 cfs @ 12.12 hrs, Volume= 0.115 af, Atten= 13%, Lag= 1.0 min Primary = 2.61 cfs @ 12.12 hrs, Volume= 0.115 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Starting Elev= 949.00' Surf.Area= 3,352 sf Storage= 651 cf Peak Elev= 949.16' @ 12.12 hrs Surf.Area= 5,568 sf Storage= 1,349 cf (698 cf above start) Plug-Flow detention time= 93.8 min calculated for 0.100 af (84% of inflow) Center-of-Mass det. time= 16.4 min ( 819.4 - 802.9 ) Volume Invert Avail.Storage Storage Description #1 948.40' 6,753 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 948.40 19 0 0 948.60 254 27 27 948.80 1,316 157 184 949.00 3,352 467 651 949.20 6,184 954 1,605 949.40 8,320 1,450 3,055 949.60 9,290 1,761 4,816 949.80 10,075 1,936 6,753 MSE 24-hr 3 NURP/1 year Rainfall=2.50"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 16HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 949.05'23.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Primary OutFlow Max=2.59 cfs @ 12.12 hrs HW=949.16' TW=0.00' (Dynamic Tailwater) 1=Sharp-Crested Rectangular Weir (Weir Controls 2.59 cfs @ 1.06 fps) Summary for Link 1L: Lotus Lake Inflow Area = 1.178 ac, 0.00% Impervious, Inflow Depth = 0.94" for NURP/1 year event Inflow = 2.11 cfs @ 12.13 hrs, Volume= 0.092 af Primary = 2.11 cfs @ 12.13 hrs, Volume= 0.092 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Summary for Link 3L: NorthWest Discharge Inflow Area = 1.721 ac, 0.00% Impervious, Inflow Depth = 0.96" for NURP/1 year event Inflow = 3.17 cfs @ 12.11 hrs, Volume= 0.137 af Primary = 3.17 cfs @ 12.11 hrs, Volume= 0.137 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Table of Contentsedrn Printed 8/15/2022Prepared by {enter your company name here} HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC TABLE OF CONTENTS Project Reports 1 Routing Diagram 2 Rainfall Events Listing (selected events) 3 Area Listing (selected nodes) 4 Soil Listing (selected nodes) 2-Year Event 5 Subcat E-1: Discharge to Northwest 6 Subcat E-2: Discharge to Wetland 6 Subcat E-3: Existing Home and discharge to Lotus lake 7 Subcat OFF-1: Offsite Discharge to Wetland 7 Pond 2P: Wetland 1 8 Link 1L: Lotus Lake 8 Link 3L: NorthWest Discharge 10-Year Event 8 Subcat E-1: Discharge to Northwest 9 Subcat E-2: Discharge to Wetland 9 Subcat E-3: Existing Home and discharge to Lotus lake 10 Subcat OFF-1: Offsite Discharge to Wetland 10 Pond 2P: Wetland 1 11 Link 1L: Lotus Lake 11 Link 3L: NorthWest Discharge 100-Year Event 11 Subcat E-1: Discharge to Northwest 12 Subcat E-2: Discharge to Wetland 12 Subcat E-3: Existing Home and discharge to Lotus lake 13 Subcat OFF-1: Offsite Discharge to Wetland 13 Pond 2P: Wetland 1 14 Link 1L: Lotus Lake 14 Link 3L: NorthWest Discharge NURP/1 year Event 14 Subcat E-1: Discharge to Northwest 15 Subcat E-2: Discharge to Wetland 15 Subcat E-3: Existing Home and discharge to Lotus lake 16 Subcat OFF-1: Offsite Discharge to Wetland 16 Pond 2P: Wetland 1 17 Link 1L: Lotus Lake 17 Link 3L: NorthWest Discharge E-1 Discharge to Northwest E-2 Discharge to Wetland E-3 Existing Home and discharge to Lotus lake OFF-1 Offsite Discharge to Wetland 2P Wetland 1 1L Lotus Lake3L NorthWest Discharge Routing Diagram for edrn Prepared by {enter your company name here}, Printed 8/15/2022 HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcat Reach Pond Link edrn Printed 8/15/2022Prepared by {enter your company name here} Page 2HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Rainfall Events Listing (selected events) Event# Event Name Storm Type Curve Mode Duration (hours) B/B Depth (inches) AMC 1 2-Year MSE 24-hr 3 Default 24.00 1 2.87 2 2 10-Year MSE 24-hr 3 Default 24.00 1 4.27 2 3 100-Year MSE 24-hr 3 Default 24.00 1 7.41 2 4 NURP/1 year MSE 24-hr 3 Default 24.00 1 2.50 2 MSE 24-hr 3 2-Year Rainfall=2.87"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 3HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment E-1: Discharge to Northwest Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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 MSE 24-hr 3 2-Year Rainfall=2.87" Runoff Area=0.315 ac Runoff Volume=0.029 af Runoff Depth=1.09" Flow Length=176' Slope=0.0842 '/' Tc=2.8 min CN=79 0.74 cfs Subcatchment E-2: Discharge to Wetland Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)2 1 0 MSE 24-hr 3 2-Year Rainfall=2.87" Runoff Area=0.809 ac Runoff Volume=0.090 af Runoff Depth=1.33" Flow Length=125' Slope=0.1606 '/' Tc=1.4 min CN=WQ 2.28 cfs MSE 24-hr 3 2-Year Rainfall=2.87"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 4HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment E-3: Existing Home and discharge to Lotus lake Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)3 2 1 0 MSE 24-hr 3 2-Year Rainfall=2.87" Runoff Area=1.178 ac Runoff Volume=0.118 af Runoff Depth=1.20" Flow Length=477' Slope=0.1261 '/' Tc=4.9 min CN=WQ 2.73 cfs Subcatchment OFF-1: Offsite Discharge to Wetland Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)1 0 MSE 24-hr 3 2-Year Rainfall=2.87" Runoff Area=26,005 sf Runoff Volume=0.062 af Runoff Depth=1.24" Flow Length=104' Slope=0.0481 '/' Tc=2.3 min CN=WQ 1.57 cfs MSE 24-hr 3 2-Year Rainfall=2.87"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 5HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Pond 2P: Wetland 1 Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)4 3 2 1 0 Inflow Area=1.406 ac Peak Elev=949.18' Storage=1,459 cf 3.82 cfs 3.35 cfs Link 1L: Lotus Lake Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)3 2 1 0 Inflow Area=1.178 ac 2.73 cfs2.73 cfs MSE 24-hr 3 2-Year Rainfall=2.87"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 6HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Link 3L: NorthWest Discharge Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)4 3 2 1 0 Inflow Area=1.721 ac 4.09 cfs4.09 cfs MSE 24-hr 3 10-Year Rainfall=4.27"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 7HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment E-1: Discharge to Northwest Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)1 0 MSE 24-hr 3 10-Year Rainfall=4.27" Runoff Area=0.315 ac Runoff Volume=0.057 af Runoff Depth=2.18" Flow Length=176' Slope=0.0842 '/' Tc=2.8 min CN=79 1.46 cfs Subcatchment E-2: Discharge to Wetland Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)4 3 2 1 0 MSE 24-hr 3 10-Year Rainfall=4.27" Runoff Area=0.809 ac Runoff Volume=0.166 af Runoff Depth=2.47" Flow Length=125' Slope=0.1606 '/' Tc=1.4 min CN=WQ 4.16 cfs MSE 24-hr 3 10-Year Rainfall=4.27"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 8HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment E-3: Existing Home and discharge to Lotus lake Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)5 4 3 2 1 0 MSE 24-hr 3 10-Year Rainfall=4.27" Runoff Area=1.178 ac Runoff Volume=0.227 af Runoff Depth=2.31" Flow Length=477' Slope=0.1261 '/' Tc=4.9 min CN=WQ 5.23 cfs Subcatchment OFF-1: Offsite Discharge to Wetland Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)3 2 1 0 MSE 24-hr 3 10-Year Rainfall=4.27" Runoff Area=26,005 sf Runoff Volume=0.117 af Runoff Depth=2.35" Flow Length=104' Slope=0.0481 '/' Tc=2.3 min CN=WQ 2.92 cfs MSE 24-hr 3 10-Year Rainfall=4.27"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 9HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Pond 2P: Wetland 1 Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=1.406 ac Peak Elev=949.24' Storage=1,883 cf 7.06 cfs 6.39 cfs Link 1L: Lotus Lake Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)5 4 3 2 1 0 Inflow Area=1.178 ac 5.23 cfs5.23 cfs MSE 24-hr 3 10-Year Rainfall=4.27"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 10HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Link 3L: NorthWest Discharge Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=1.721 ac 7.84 cfs7.84 cfs MSE 24-hr 3 100-Year Rainfall=7.41"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 11HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment E-1: Discharge to Northwest Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)3 2 1 0 MSE 24-hr 3 100-Year Rainfall=7.41" Runoff Area=0.315 ac Runoff Volume=0.130 af Runoff Depth=4.96" Flow Length=176' Slope=0.0842 '/' Tc=2.8 min CN=79 3.17 cfs Subcatchment E-2: Discharge to Wetland Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)9 8 7 6 5 4 3 2 1 0 MSE 24-hr 3 100-Year Rainfall=7.41" Runoff Area=0.809 ac Runoff Volume=0.357 af Runoff Depth=5.30" Flow Length=125' Slope=0.1606 '/' Tc=1.4 min CN=WQ 8.54 cfs MSE 24-hr 3 100-Year Rainfall=7.41"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 12HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment E-3: Existing Home and discharge to Lotus lake Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 MSE 24-hr 3 100-Year Rainfall=7.41" Runoff Area=1.178 ac Runoff Volume=0.502 af Runoff Depth=5.12" Flow Length=477' Slope=0.1261 '/' Tc=4.9 min CN=WQ 11.23 cfs Subcatchment OFF-1: Offsite Discharge to Wetland Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)6 5 4 3 2 1 0 MSE 24-hr 3 100-Year Rainfall=7.41" Runoff Area=26,005 sf Runoff Volume=0.257 af Runoff Depth=5.16" Flow Length=104' Slope=0.0481 '/' Tc=2.3 min CN=WQ 6.15 cfs MSE 24-hr 3 100-Year Rainfall=7.41"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 13HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Pond 2P: Wetland 1 Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=1.406 ac Peak Elev=949.37' Storage=2,819 cf 14.74 cfs 13.65 cfs Link 1L: Lotus Lake Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=1.178 ac 11.23 cfs11.23 cfs MSE 24-hr 3 100-Year Rainfall=7.41"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 14HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Link 3L: NorthWest Discharge Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=1.721 ac 16.80 cfs16.80 cfs MSE 24-hr 3 NURP/1 year Rainfall=2.50"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 15HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment E-1: Discharge to Northwest Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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 MSE 24-hr 3 NURP/1 year Rainfall=2.50" Runoff Area=0.315 ac Runoff Volume=0.022 af Runoff Depth=0.84" Flow Length=176' Slope=0.0842 '/' Tc=2.8 min CN=79 0.57 cfs Subcatchment E-2: Discharge to Wetland Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)2 1 0 MSE 24-hr 3 NURP/1 year Rainfall=2.50" Runoff Area=0.809 ac Runoff Volume=0.071 af Runoff Depth=1.06" Flow Length=125' Slope=0.1606 '/' Tc=1.4 min CN=WQ 1.81 cfs MSE 24-hr 3 NURP/1 year Rainfall=2.50"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 16HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment E-3: Existing Home and discharge to Lotus lake Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)2 1 0 MSE 24-hr 3 NURP/1 year Rainfall=2.50" Runoff Area=1.178 ac Runoff Volume=0.092 af Runoff Depth=0.94" Flow Length=477' Slope=0.1261 '/' Tc=4.9 min CN=WQ 2.11 cfs Subcatchment OFF-1: Offsite Discharge to Wetland Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)1 0 MSE 24-hr 3 NURP/1 year Rainfall=2.50" Runoff Area=26,005 sf Runoff Volume=0.048 af Runoff Depth=0.97" Flow Length=104' Slope=0.0481 '/' Tc=2.3 min CN=WQ 1.23 cfs MSE 24-hr 3 NURP/1 year Rainfall=2.50"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 17HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Pond 2P: Wetland 1 Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)3 2 1 0 Inflow Area=1.406 ac Peak Elev=949.16' Storage=1,349 cf 3.01 cfs 2.61 cfs Link 1L: Lotus Lake Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)2 1 0 Inflow Area=1.178 ac 2.11 cfs2.11 cfs MSE 24-hr 3 NURP/1 year Rainfall=2.50"edrn Printed 8/15/2022Prepared by {enter your company name here} Page 18HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Link 3L: NorthWest Discharge Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)3 2 1 0 Inflow Area=1.721 ac 3.17 cfs3.17 cfs Table of Contentsedrn Printed 8/15/2022Prepared by {enter your company name here} HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC TABLE OF CONTENTS Project Reports 1 Routing Diagram 2 Rainfall Events Listing (selected events) 2-Year Event 3 Subcat E-1: Discharge to Northwest 4 Subcat E-2: Discharge to Wetland 4 Subcat E-3: Existing Home and discharge to Lotus lake 5 Subcat OFF-1: Offsite Discharge to Wetland 5 Pond 2P: Wetland 1 6 Link 1L: Lotus Lake 6 Link 3L: NorthWest Discharge 10-Year Event 7 Subcat E-1: Discharge to Northwest 8 Subcat E-2: Discharge to Wetland 8 Subcat E-3: Existing Home and discharge to Lotus lake 9 Subcat OFF-1: Offsite Discharge to Wetland 9 Pond 2P: Wetland 1 10 Link 1L: Lotus Lake 10 Link 3L: NorthWest Discharge 100-Year Event 11 Subcat E-1: Discharge to Northwest 12 Subcat E-2: Discharge to Wetland 12 Subcat E-3: Existing Home and discharge to Lotus lake 13 Subcat OFF-1: Offsite Discharge to Wetland 13 Pond 2P: Wetland 1 14 Link 1L: Lotus Lake 14 Link 3L: NorthWest Discharge NURP/1 year Event 15 Subcat E-1: Discharge to Northwest 16 Subcat E-2: Discharge to Wetland 16 Subcat E-3: Existing Home and discharge to Lotus lake 17 Subcat OFF-1: Offsite Discharge to Wetland 17 Pond 2P: Wetland 1 18 Link 1L: Lotus Lake 18 Link 3L: NorthWest Discharge LOT 1LOT 2LOT 3BLOCK 1OUTLOT AWSWOSWOEX HWL 949.36HWL 949.36S20°28'26"E 125.32N22°37'50"W 125.86N74°50'50"E 825.86N74°50'50"E 821.1032+/-41+/-1FOX HILL DRIVE PROPOSED DRAINAGE MAP 733 Marquette AvenueMinneapolis, MN 55402612.758.3080www.alliant-inc.comSuite 700FOR REVIEW ONLYPRELIMINARYNOT FOR CONSTRUCTION LEGEND E-1 Discharge to Northwest E-2 Discharge to Wetland OFF-1 Offsite Discharge to Wetland S-3 Lot 2 S-4 (new Subcat) S-5 (new Subcat) S-6 (new Subcat) 2P Wetland 1 4P Infiltration Block 1 Lot 2 5P Block 2 Lot 3 Infiltration Basin 6PCB OCS 502 8P Lot 1 Block 1 Infiltration 1L Lotus Lake 3L NorthWest Discharge Routing Diagram for pdrn Prepared by {enter your company name here}, Printed 10/20/2022 HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcat Reach Pond Link pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 2HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Rainfall Events Listing (selected events) Event# Event Name Storm Type Curve Mode Duration (hours) B/B Depth (inches) AMC 1 2-Year MSE 24-hr 3 Default 24.00 1 2.87 2 2 10-Year MSE 24-hr 3 Default 24.00 1 4.27 2 3 100-Year MSE 24-hr 3 Default 24.00 1 7.41 2 pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 3HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Area Listing (selected nodes) Area (acres) CN Description (subcatchment-numbers) 0.731 84 >75% Grass cover, Good, HSG D (S-3, S-4, S-5) 0.329 98 Roofs, HSG D (S-3, S-4, S-5) 0.124 98 Water Surface, 0% imp, HSG D (E-2) 0.912 79 Woods, Fair, HSG D (E-1, OFF-1) 0.877 77 Woods, Good, HSG D (E-2, S-4, S-5, S-6) 2.973 83 TOTAL AREA pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 4HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Soil Listing (selected nodes) Area (acres) Soil Group Subcatchment Numbers 0.000 HSG A 0.000 HSG B 0.000 HSG C 2.973 HSG D E-1, E-2, OFF-1, S-3, S-4, S-5, S-6 0.000 Other 2.973 TOTAL AREA MSE 24-hr 3 2-Year Rainfall=2.87"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 5HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Time span=0.00-400.00 hrs, dt=0.01 hrs, 40001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Runoff Area=0.315 ac 0.00% Impervious Runoff Depth=1.09"Subcatchment E-1: Discharge to Northwest Flow Length=176' Slope=0.0842 '/' Tc=2.8 min CN=79 Runoff=0.74 cfs 0.029 af Runoff Area=0.598 ac 0.00% Impervious Runoff Depth=1.33"Subcatchment E-2: Discharge to Wetland Flow Length=125' Slope=0.1606 '/' Tc=1.5 min CN=WQ Runoff=1.63 cfs 0.066 af Runoff Area=0.597 ac 0.00% Impervious Runoff Depth=1.09"Subcatchment OFF-1: Offsite Discharge to Flow Length=104' Slope=0.0481 '/' Tc=2.4 min CN=79 Runoff=1.43 cfs 0.054 af Runoff Area=0.270 ac 38.52% Impervious Runoff Depth=1.88"Subcatchment S-3: Lot 2 Tc=10.0 min CN=WQ Runoff=0.74 cfs 0.042 af Runoff Area=0.601 ac 15.47% Impervious Runoff Depth=1.43"Subcatchment S-4: (new Subcat) Tc=5.0 min CN=WQ Runoff=1.61 cfs 0.072 af Runoff Area=0.531 ac 24.86% Impervious Runoff Depth=1.63"Subcatchment S-5: (new Subcat) Tc=5.0 min CN=WQ Runoff=1.59 cfs 0.072 af Runoff Area=0.061 ac 0.00% Impervious Runoff Depth=0.98"Subcatchment S-6: (new Subcat) Tc=3.0 min CN=77 Runoff=0.13 cfs 0.005 af Peak Elev=949.00' Storage=0 cf Inflow=3.04 cfs 0.145 afPond 2P: Wetland 1 Primary=3.04 cfs 0.145 af Secondary=0.00 cfs 0.000 af Outflow=3.04 cfs 0.145 af Peak Elev=943.98' Storage=1,181 cf Inflow=1.61 cfs 0.072 afPond 4P: Infiltration Block 1 Lot 2 Discarded=0.01 cfs 0.018 af Primary=0.42 cfs 0.053 af Outflow=0.43 cfs 0.072 af Peak Elev=955.20' Storage=747 cf Inflow=0.74 cfs 0.042 afPond 5P: Block 2 Lot 3 Infiltration Basin Discarded=0.01 cfs 0.018 af Primary=0.28 cfs 0.024 af Outflow=0.28 cfs 0.042 af Peak Elev=907.98' Inflow=1.22 cfs 0.106 afPond 6P: OCS 502 Outflow=1.22 cfs 0.106 af Peak Elev=910.94' Storage=1,164 cf Inflow=1.59 cfs 0.072 afPond 8P: Lot 1 Block 1 Infiltration Discarded=0.00 cfs 0.020 af Primary=0.45 cfs 0.048 af Secondary=0.37 cfs 0.004 af Tertiary=0.00 cfs 0.000 af Outflow=0.82 cfs 0.072 af Inflow=1.27 cfs 0.111 afLink 1L: Lotus Lake Primary=1.27 cfs 0.111 af Inflow=3.77 cfs 0.173 afLink 3L: NorthWest Discharge Primary=3.77 cfs 0.173 af Total Runoff Area = 2.973 ac Runoff Volume = 0.340 af Average Runoff Depth = 1.37" 88.93% Pervious = 2.644 ac 11.07% Impervious = 0.329 ac MSE 24-hr 3 2-Year Rainfall=2.87"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 6HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment E-1: Discharge to Northwest Runoff = 0.74 cfs @ 12.11 hrs, Volume= 0.029 af, Depth= 1.09" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.87" Area (ac) CN Description 0.315 79 Woods, Fair, HSG D 0.315 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.8 176 0.0842 1.04 Lag/CN Method, Summary for Subcatchment E-2: Discharge to Wetland Runoff = 1.63 cfs @ 12.10 hrs, Volume= 0.066 af, Depth= 1.33" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.87" Area (ac) CN Description 0.474 77 Woods, Good, HSG D 0.124 98 Water Surface, 0% imp, HSG D 0.598 Weighted Average 0.598 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.5 125 0.1606 1.43 Lag/CN Method, Summary for Subcatchment OFF-1: Offsite Discharge to Wetland Runoff = 1.43 cfs @ 12.11 hrs, Volume= 0.054 af, Depth= 1.09" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.87" Area (ac) CN Description 0.597 79 Woods, Fair, HSG D 0.597 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.4 104 0.0481 0.71 Lag/CN Method, MSE 24-hr 3 2-Year Rainfall=2.87"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 7HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment S-3: Lot 2 Runoff = 0.74 cfs @ 12.17 hrs, Volume= 0.042 af, Depth= 1.88" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.87" Area (ac) CN Description 0.104 98 Roofs, HSG D * 0.166 84 >75% Grass cover, Good, HSG D 0.270 Weighted Average 0.166 61.48% Pervious Area 0.104 38.52% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Summary for Subcatchment S-4: (new Subcat) Runoff = 1.61 cfs @ 12.13 hrs, Volume= 0.072 af, Depth= 1.43" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.87" Area (ac) CN Description 0.093 98 Roofs, HSG D * 0.270 84 >75% Grass cover, Good, HSG D 0.238 77 Woods, Good, HSG D 0.601 Weighted Average 0.508 84.53% Pervious Area 0.093 15.47% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Summary for Subcatchment S-5: (new Subcat) Runoff = 1.59 cfs @ 12.12 hrs, Volume= 0.072 af, Depth= 1.63" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.87" MSE 24-hr 3 2-Year Rainfall=2.87"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 8HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Area (ac) CN Description 0.132 98 Roofs, HSG D * 0.295 84 >75% Grass cover, Good, HSG D 0.104 77 Woods, Good, HSG D 0.531 Weighted Average 0.399 75.14% Pervious Area 0.132 24.86% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Summary for Subcatchment S-6: (new Subcat) Runoff = 0.13 cfs @ 12.11 hrs, Volume= 0.005 af, Depth= 0.98" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.87" Area (ac) CN Description 0.061 77 Woods, Good, HSG D 0.061 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.0 Direct Entry, Summary for Pond 2P: Wetland 1 [44] Hint: Outlet device #1 is below defined storage Inflow Area = 1.465 ac, 7.10% Impervious, Inflow Depth = 1.18" for 2-Year event Inflow = 3.04 cfs @ 12.10 hrs, Volume= 0.145 af Outflow = 3.04 cfs @ 12.10 hrs, Volume= 0.145 af, Atten= 0%, Lag= 0.0 min Primary = 3.04 cfs @ 12.10 hrs, Volume= 0.145 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 949.00' @ 12.10 hrs Surf.Area= 3,352 sf Storage= 0 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 0.0 min ( 803.0 - 803.0 ) Volume Invert Avail.Storage Storage Description #1 949.00' 7,385 cf Wetland (Prismatic) Listed below (Recalc) MSE 24-hr 3 2-Year Rainfall=2.87"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 9HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 949.00 3,352 0 0 949.40 7,681 2,207 2,207 949.60 8,387 1,607 3,813 949.80 8,933 1,732 5,545 950.00 9,460 1,839 7,385 Device Routing Invert Outlet Devices #1 Primary 947.82'21.0" W x 15.0" H, R=10.8"/33.1" Pipe Arch CMP_Arch_1/2 21x15 L= 69.4' CMP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 947.82' / 939.30' S= 0.1228 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 1.74 sf #2 Secondary 949.45'4.5' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Primary OutFlow Max=6.14 cfs @ 12.10 hrs HW=949.00' TW=0.00' (Dynamic Tailwater) 1=CMP_Arch_1/2 21x15 (Inlet Controls 6.14 cfs @ 3.59 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=949.00' TW=0.00' (Dynamic Tailwater) 2=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 4P: Infiltration Block 1 Lot 2 Inflow Area = 0.601 ac, 15.47% Impervious, Inflow Depth = 1.43" for 2-Year event Inflow = 1.61 cfs @ 12.13 hrs, Volume= 0.072 af Outflow = 0.43 cfs @ 12.31 hrs, Volume= 0.072 af, Atten= 73%, Lag= 11.3 min Discarded = 0.01 cfs @ 10.77 hrs, Volume= 0.018 af Primary = 0.42 cfs @ 12.31 hrs, Volume= 0.053 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 943.98' @ 12.31 hrs Surf.Area= 941 sf Storage= 1,181 cf Plug-Flow detention time= 169.2 min calculated for 0.072 af (100% of inflow) Center-of-Mass det. time= 169.3 min ( 965.9 - 796.7 ) Volume Invert Avail.Storage Storage Description #1A 941.94' 1,163 cf 13.25'W x 71.00'L x 5.50'H Field A 5,174 cf Overall - 2,266 cf Embedded = 2,908 cf x 40.0% Voids #2A 942.44' 2,266 cf CMP Round 54 x 6 Inside #1 Effective Size= 54.0"W x 54.0"H => 15.90 sf x 20.00'L = 318.1 cf Overall Size= 54.0"W x 54.0"H x 20.00'L 6 Chambers in 2 Rows 11.25' Header x 15.90 sf x 2 = 357.8 cf Inside 3,429 cf Total Available Storage Storage Group A created with Chamber Wizard MSE 24-hr 3 2-Year Rainfall=2.87"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 10HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Discarded 941.94'0.317 in/hr Exfiltration over Surface area Phase-In= 0.01' #2 Primary 928.46'12.0" Round Culvert L= 135.8' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 928.46' / 912.00' S= 0.1212 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 0.79 sf #3 Device 2 935.82'12.0" Round Culvert L= 60.5' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 935.82' / 933.41' S= 0.0398 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 0.79 sf #4 Device 3 942.80'4.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Device 3 944.97'12.0" W x 5.1" H Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #6 Device 3 947.06'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Discarded OutFlow Max=0.01 cfs @ 10.77 hrs HW=942.00' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.42 cfs @ 12.31 hrs HW=943.98' TW=907.92' (Dynamic Tailwater) 2=Culvert (Passes 0.42 cfs of 15.01 cfs potential flow) 3=Culvert (Passes 0.42 cfs of 11.08 cfs potential flow) 4=Orifice/Grate (Orifice Controls 0.42 cfs @ 4.85 fps) 5=Orifice/Grate ( Controls 0.00 cfs) 6=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 5P: Block 2 Lot 3 Infiltration Basin Inflow Area = 0.270 ac, 38.52% Impervious, Inflow Depth = 1.88" for 2-Year event Inflow = 0.74 cfs @ 12.17 hrs, Volume= 0.042 af Outflow = 0.28 cfs @ 12.37 hrs, Volume= 0.042 af, Atten= 62%, Lag= 11.7 min Discarded = 0.01 cfs @ 10.54 hrs, Volume= 0.018 af Primary = 0.28 cfs @ 12.37 hrs, Volume= 0.024 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 955.20' @ 12.37 hrs Surf.Area= 742 sf Storage= 747 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 293.8 min ( 1,076.4 - 782.7 ) Volume Invert Avail.Storage Storage Description #1A 953.50' 806 cf 10.75'W x 69.00'L x 4.50'H Field A 3,338 cf Overall - 1,323 cf Embedded = 2,015 cf x 40.0% Voids #2A 954.00' 1,323 cf CMP Round 42 x 6 Inside #1 Effective Size= 42.0"W x 42.0"H => 9.62 sf x 20.00'L = 192.4 cf Overall Size= 42.0"W x 42.0"H x 20.00'L 6 Chambers in 2 Rows 8.75' Header x 9.62 sf x 2 = 168.4 cf Inside 2,129 cf Total Available Storage MSE 24-hr 3 2-Year Rainfall=2.87"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 11HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 953.50'0.375 in/hr Exfiltration over Surface area #2 Primary 954.48'12.0" Round Culvert L= 15.2' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 954.48' / 954.39' S= 0.0059 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 0.79 sf #3 Device 2 954.60'4.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Device 2 957.89'5.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Discarded OutFlow Max=0.01 cfs @ 10.54 hrs HW=953.55' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.28 cfs @ 12.37 hrs HW=955.20' TW=949.00' (Dynamic Tailwater) 2=Culvert (Passes 0.28 cfs of 1.24 cfs potential flow) 3=Orifice/Grate (Orifice Controls 0.28 cfs @ 3.18 fps) 4=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 6P: OCS 502 Inflow Area = 1.132 ac, 19.88% Impervious, Inflow Depth = 1.12" for 2-Year event Inflow = 1.22 cfs @ 12.20 hrs, Volume= 0.106 af Outflow = 1.22 cfs @ 12.20 hrs, Volume= 0.106 af, Atten= 0%, Lag= 0.0 min Primary = 1.22 cfs @ 12.20 hrs, Volume= 0.106 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 907.98' @ 12.20 hrs Flood Elev= 912.00' Device Routing Invert Outlet Devices #1 Primary 896.46'15.0" Round Culvert L= 34.4' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 896.46' / 896.35' S= 0.0032 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #2 Device 1 907.51'15.0" Round Culvert L= 33.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 907.51' / 906.00' S= 0.0458 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf Primary OutFlow Max=1.22 cfs @ 12.20 hrs HW=907.98' TW=0.00' (Dynamic Tailwater) 1=Culvert (Passes 1.22 cfs of 19.50 cfs potential flow) 2=Culvert (Inlet Controls 1.22 cfs @ 2.91 fps) MSE 24-hr 3 2-Year Rainfall=2.87"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 12HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Pond 8P: Lot 1 Block 1 Infiltration Inflow Area = 0.531 ac, 24.86% Impervious, Inflow Depth = 1.63" for 2-Year event Inflow = 1.59 cfs @ 12.12 hrs, Volume= 0.072 af Outflow = 0.82 cfs @ 12.20 hrs, Volume= 0.072 af, Atten= 48%, Lag= 4.2 min Discarded = 0.00 cfs @ 9.37 hrs, Volume= 0.020 af Primary = 0.45 cfs @ 12.20 hrs, Volume= 0.048 af Secondary = 0.37 cfs @ 12.20 hrs, Volume= 0.004 af Tertiary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 910.94' @ 12.20 hrs Surf.Area= 592 sf Storage= 1,164 cf Plug-Flow detention time= 323.5 min calculated for 0.072 af (100% of inflow) Center-of-Mass det. time= 323.5 min ( 1,111.1 - 787.6 ) Volume Invert Avail.Storage Storage Description #1A 908.00' 735 cf 6.50'W x 91.00'L x 5.50'H Field A 3,253 cf Overall - 1,415 cf Embedded = 1,838 cf x 40.0% Voids #2A 908.50' 1,415 cf CMP Round 54 x 4 Inside #1 Effective Size= 54.0"W x 54.0"H => 15.90 sf x 20.00'L = 318.1 cf Overall Size= 54.0"W x 54.0"H x 20.00'L 4.50' Header x 15.90 sf x 2 = 143.1 cf Inside 2,151 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 908.00'0.333 in/hr Exfiltration over Surface area Phase-In= 0.01' #2 Primary 909.61'4.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Secondary 910.70'12.0" W x 5.4" H Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Tertiary 913.47'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Discarded OutFlow Max=0.00 cfs @ 9.37 hrs HW=908.06' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.00 cfs) Primary OutFlow Max=0.45 cfs @ 12.20 hrs HW=910.93' TW=907.98' (Dynamic Tailwater) 2=Orifice/Grate (Orifice Controls 0.45 cfs @ 5.18 fps) Secondary OutFlow Max=0.36 cfs @ 12.20 hrs HW=910.93' TW=907.98' (Dynamic Tailwater) 3=Orifice/Grate (Orifice Controls 0.36 cfs @ 1.56 fps) Tertiary OutFlow Max=0.00 cfs @ 0.00 hrs HW=908.00' TW=896.46' (Dynamic Tailwater) 4=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) MSE 24-hr 3 2-Year Rainfall=2.87"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 13HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Link 1L: Lotus Lake Inflow Area = 1.193 ac, 18.86% Impervious, Inflow Depth = 1.11" for 2-Year event Inflow = 1.27 cfs @ 12.20 hrs, Volume= 0.111 af Primary = 1.27 cfs @ 12.20 hrs, Volume= 0.111 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Summary for Link 3L: NorthWest Discharge Inflow Area = 1.780 ac, 5.84% Impervious, Inflow Depth = 1.17" for 2-Year event Inflow = 3.77 cfs @ 12.10 hrs, Volume= 0.173 af Primary = 3.77 cfs @ 12.10 hrs, Volume= 0.173 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.27"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 14HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Time span=0.00-400.00 hrs, dt=0.01 hrs, 40001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Runoff Area=0.315 ac 0.00% Impervious Runoff Depth=2.18"Subcatchment E-1: Discharge to Northwest Flow Length=176' Slope=0.0842 '/' Tc=2.8 min CN=79 Runoff=1.46 cfs 0.057 af Runoff Area=0.598 ac 0.00% Impervious Runoff Depth=2.44"Subcatchment E-2: Discharge to Wetland Flow Length=125' Slope=0.1606 '/' Tc=1.5 min CN=WQ Runoff=2.99 cfs 0.122 af Runoff Area=0.597 ac 0.00% Impervious Runoff Depth=2.18"Subcatchment OFF-1: Offsite Discharge to Flow Length=104' Slope=0.0481 '/' Tc=2.4 min CN=79 Runoff=2.80 cfs 0.109 af Runoff Area=0.270 ac 38.52% Impervious Runoff Depth=3.16"Subcatchment S-3: Lot 2 Tc=10.0 min CN=WQ Runoff=1.23 cfs 0.071 af Runoff Area=0.601 ac 15.47% Impervious Runoff Depth=2.60"Subcatchment S-4: (new Subcat) Tc=5.0 min CN=WQ Runoff=2.91 cfs 0.130 af Runoff Area=0.531 ac 24.86% Impervious Runoff Depth=2.85"Subcatchment S-5: (new Subcat) Tc=5.0 min CN=WQ Runoff=2.76 cfs 0.126 af Runoff Area=0.061 ac 0.00% Impervious Runoff Depth=2.03"Subcatchment S-6: (new Subcat) Tc=3.0 min CN=77 Runoff=0.26 cfs 0.010 af Peak Elev=949.00' Storage=3 cf Inflow=6.02 cfs 0.282 afPond 2P: Wetland 1 Primary=5.98 cfs 0.282 af Secondary=0.00 cfs 0.000 af Outflow=5.98 cfs 0.282 af Peak Elev=945.21' Storage=2,112 cf Inflow=2.91 cfs 0.130 afPond 4P: Infiltration Block 1 Lot 2 Discarded=0.01 cfs 0.019 af Primary=1.02 cfs 0.111 af Outflow=1.02 cfs 0.130 af Peak Elev=955.98' Storage=1,198 cf Inflow=1.23 cfs 0.071 afPond 5P: Block 2 Lot 3 Infiltration Basin Discarded=0.01 cfs 0.020 af Primary=0.46 cfs 0.051 af Outflow=0.47 cfs 0.071 af Peak Elev=908.28' Inflow=2.93 cfs 0.216 afPond 6P: OCS 502 Outflow=2.93 cfs 0.216 af Peak Elev=911.53' Storage=1,445 cf Inflow=2.76 cfs 0.126 afPond 8P: Lot 1 Block 1 Infiltration Discarded=0.00 cfs 0.020 af Primary=0.56 cfs 0.076 af Secondary=1.68 cfs 0.030 af Tertiary=0.00 cfs 0.000 af Outflow=2.24 cfs 0.126 af Inflow=3.03 cfs 0.227 afLink 1L: Lotus Lake Primary=3.03 cfs 0.227 af Inflow=7.43 cfs 0.339 afLink 3L: NorthWest Discharge Primary=7.43 cfs 0.339 af Total Runoff Area = 2.973 ac Runoff Volume = 0.625 af Average Runoff Depth = 2.52" 88.93% Pervious = 2.644 ac 11.07% Impervious = 0.329 ac MSE 24-hr 3 10-Year Rainfall=4.27"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 15HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment E-1: Discharge to Northwest Runoff = 1.46 cfs @ 12.11 hrs, Volume= 0.057 af, Depth= 2.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.27" Area (ac) CN Description 0.315 79 Woods, Fair, HSG D 0.315 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.8 176 0.0842 1.04 Lag/CN Method, Summary for Subcatchment E-2: Discharge to Wetland Runoff = 2.99 cfs @ 12.10 hrs, Volume= 0.122 af, Depth= 2.44" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.27" Area (ac) CN Description 0.474 77 Woods, Good, HSG D 0.124 98 Water Surface, 0% imp, HSG D 0.598 Weighted Average 0.598 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.5 125 0.1606 1.43 Lag/CN Method, Summary for Subcatchment OFF-1: Offsite Discharge to Wetland Runoff = 2.80 cfs @ 12.11 hrs, Volume= 0.109 af, Depth= 2.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.27" Area (ac) CN Description 0.597 79 Woods, Fair, HSG D 0.597 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.4 104 0.0481 0.71 Lag/CN Method, MSE 24-hr 3 10-Year Rainfall=4.27"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 16HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment S-3: Lot 2 Runoff = 1.23 cfs @ 12.17 hrs, Volume= 0.071 af, Depth= 3.16" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.27" Area (ac) CN Description 0.104 98 Roofs, HSG D * 0.166 84 >75% Grass cover, Good, HSG D 0.270 Weighted Average 0.166 61.48% Pervious Area 0.104 38.52% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Summary for Subcatchment S-4: (new Subcat) Runoff = 2.91 cfs @ 12.12 hrs, Volume= 0.130 af, Depth= 2.60" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.27" Area (ac) CN Description 0.093 98 Roofs, HSG D * 0.270 84 >75% Grass cover, Good, HSG D 0.238 77 Woods, Good, HSG D 0.601 Weighted Average 0.508 84.53% Pervious Area 0.093 15.47% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Summary for Subcatchment S-5: (new Subcat) Runoff = 2.76 cfs @ 12.12 hrs, Volume= 0.126 af, Depth= 2.85" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.27" MSE 24-hr 3 10-Year Rainfall=4.27"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 17HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Area (ac) CN Description 0.132 98 Roofs, HSG D * 0.295 84 >75% Grass cover, Good, HSG D 0.104 77 Woods, Good, HSG D 0.531 Weighted Average 0.399 75.14% Pervious Area 0.132 24.86% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Summary for Subcatchment S-6: (new Subcat) Runoff = 0.26 cfs @ 12.11 hrs, Volume= 0.010 af, Depth= 2.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.27" Area (ac) CN Description 0.061 77 Woods, Good, HSG D 0.061 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.0 Direct Entry, Summary for Pond 2P: Wetland 1 [44] Hint: Outlet device #1 is below defined storage [87] Warning: Oscillations may require smaller dt or Finer Routing (severity=567) Inflow Area = 1.465 ac, 7.10% Impervious, Inflow Depth = 2.31" for 10-Year event Inflow = 6.02 cfs @ 12.10 hrs, Volume= 0.282 af Outflow = 5.98 cfs @ 12.10 hrs, Volume= 0.282 af, Atten= 1%, Lag= 0.2 min Primary = 5.98 cfs @ 12.10 hrs, Volume= 0.282 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 949.00' @ 12.10 hrs Surf.Area= 3,363 sf Storage= 3 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 0.1 min ( 795.4 - 795.3 ) Volume Invert Avail.Storage Storage Description #1 949.00' 7,385 cf Wetland (Prismatic) Listed below (Recalc) MSE 24-hr 3 10-Year Rainfall=4.27"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 18HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 949.00 3,352 0 0 949.40 7,681 2,207 2,207 949.60 8,387 1,607 3,813 949.80 8,933 1,732 5,545 950.00 9,460 1,839 7,385 Device Routing Invert Outlet Devices #1 Primary 947.82'21.0" W x 15.0" H, R=10.8"/33.1" Pipe Arch CMP_Arch_1/2 21x15 L= 69.4' CMP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 947.82' / 939.30' S= 0.1228 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 1.74 sf #2 Secondary 949.45'4.5' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Primary OutFlow Max=6.14 cfs @ 12.10 hrs HW=949.00' TW=0.00' (Dynamic Tailwater) 1=CMP_Arch_1/2 21x15 (Inlet Controls 6.14 cfs @ 3.59 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=949.00' TW=0.00' (Dynamic Tailwater) 2=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 4P: Infiltration Block 1 Lot 2 Inflow Area = 0.601 ac, 15.47% Impervious, Inflow Depth = 2.60" for 10-Year event Inflow = 2.91 cfs @ 12.12 hrs, Volume= 0.130 af Outflow = 1.02 cfs @ 12.25 hrs, Volume= 0.130 af, Atten= 65%, Lag= 7.4 min Discarded = 0.01 cfs @ 9.58 hrs, Volume= 0.019 af Primary = 1.02 cfs @ 12.25 hrs, Volume= 0.111 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 945.21' @ 12.25 hrs Surf.Area= 941 sf Storage= 2,112 cf Plug-Flow detention time= 113.3 min calculated for 0.130 af (100% of inflow) Center-of-Mass det. time= 113.4 min ( 901.2 - 787.9 ) Volume Invert Avail.Storage Storage Description #1A 941.94' 1,163 cf 13.25'W x 71.00'L x 5.50'H Field A 5,174 cf Overall - 2,266 cf Embedded = 2,908 cf x 40.0% Voids #2A 942.44' 2,266 cf CMP Round 54 x 6 Inside #1 Effective Size= 54.0"W x 54.0"H => 15.90 sf x 20.00'L = 318.1 cf Overall Size= 54.0"W x 54.0"H x 20.00'L 6 Chambers in 2 Rows 11.25' Header x 15.90 sf x 2 = 357.8 cf Inside 3,429 cf Total Available Storage Storage Group A created with Chamber Wizard MSE 24-hr 3 10-Year Rainfall=4.27"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 19HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Discarded 941.94'0.317 in/hr Exfiltration over Surface area Phase-In= 0.01' #2 Primary 928.46'12.0" Round Culvert L= 135.8' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 928.46' / 912.00' S= 0.1212 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 0.79 sf #3 Device 2 935.82'12.0" Round Culvert L= 60.5' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 935.82' / 933.41' S= 0.0398 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 0.79 sf #4 Device 3 942.80'4.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Device 3 944.97'12.0" W x 5.1" H Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #6 Device 3 947.06'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Discarded OutFlow Max=0.01 cfs @ 9.58 hrs HW=942.00' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=1.02 cfs @ 12.25 hrs HW=945.21' TW=908.21' (Dynamic Tailwater) 2=Culvert (Passes 1.02 cfs of 15.30 cfs potential flow) 3=Culvert (Passes 1.02 cfs of 11.77 cfs potential flow) 4=Orifice/Grate (Orifice Controls 0.63 cfs @ 7.22 fps) 5=Orifice/Grate (Orifice Controls 0.39 cfs @ 1.59 fps) 6=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 5P: Block 2 Lot 3 Infiltration Basin Inflow Area = 0.270 ac, 38.52% Impervious, Inflow Depth = 3.16" for 10-Year event Inflow = 1.23 cfs @ 12.17 hrs, Volume= 0.071 af Outflow = 0.47 cfs @ 12.37 hrs, Volume= 0.071 af, Atten= 62%, Lag= 11.6 min Discarded = 0.01 cfs @ 9.42 hrs, Volume= 0.020 af Primary = 0.46 cfs @ 12.37 hrs, Volume= 0.051 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 955.98' @ 12.37 hrs Surf.Area= 742 sf Storage= 1,198 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 196.7 min ( 972.6 - 775.9 ) Volume Invert Avail.Storage Storage Description #1A 953.50' 806 cf 10.75'W x 69.00'L x 4.50'H Field A 3,338 cf Overall - 1,323 cf Embedded = 2,015 cf x 40.0% Voids #2A 954.00' 1,323 cf CMP Round 42 x 6 Inside #1 Effective Size= 42.0"W x 42.0"H => 9.62 sf x 20.00'L = 192.4 cf Overall Size= 42.0"W x 42.0"H x 20.00'L 6 Chambers in 2 Rows 8.75' Header x 9.62 sf x 2 = 168.4 cf Inside 2,129 cf Total Available Storage MSE 24-hr 3 10-Year Rainfall=4.27"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 20HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 953.50'0.375 in/hr Exfiltration over Surface area #2 Primary 954.48'12.0" Round Culvert L= 15.2' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 954.48' / 954.39' S= 0.0059 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 0.79 sf #3 Device 2 954.60'4.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Device 2 957.89'5.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Discarded OutFlow Max=0.01 cfs @ 9.42 hrs HW=953.55' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.46 cfs @ 12.37 hrs HW=955.98' TW=949.00' (Dynamic Tailwater) 2=Culvert (Passes 0.46 cfs of 2.98 cfs potential flow) 3=Orifice/Grate (Orifice Controls 0.46 cfs @ 5.30 fps) 4=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 6P: OCS 502 Inflow Area = 1.132 ac, 19.88% Impervious, Inflow Depth = 2.29" for 10-Year event Inflow = 2.93 cfs @ 12.19 hrs, Volume= 0.216 af Outflow = 2.93 cfs @ 12.19 hrs, Volume= 0.216 af, Atten= 0%, Lag= 0.0 min Primary = 2.93 cfs @ 12.19 hrs, Volume= 0.216 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 908.28' @ 12.19 hrs Flood Elev= 912.00' Device Routing Invert Outlet Devices #1 Primary 896.46'15.0" Round Culvert L= 34.4' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 896.46' / 896.35' S= 0.0032 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #2 Device 1 907.51'15.0" Round Culvert L= 33.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 907.51' / 906.00' S= 0.0458 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf Primary OutFlow Max=2.93 cfs @ 12.19 hrs HW=908.27' TW=0.00' (Dynamic Tailwater) 1=Culvert (Passes 2.93 cfs of 19.77 cfs potential flow) 2=Culvert (Inlet Controls 2.93 cfs @ 3.72 fps) MSE 24-hr 3 10-Year Rainfall=4.27"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 21HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Pond 8P: Lot 1 Block 1 Infiltration Inflow Area = 0.531 ac, 24.86% Impervious, Inflow Depth = 2.85" for 10-Year event Inflow = 2.76 cfs @ 12.12 hrs, Volume= 0.126 af Outflow = 2.24 cfs @ 12.16 hrs, Volume= 0.126 af, Atten= 19%, Lag= 2.1 min Discarded = 0.00 cfs @ 7.22 hrs, Volume= 0.020 af Primary = 0.56 cfs @ 12.16 hrs, Volume= 0.076 af Secondary = 1.68 cfs @ 12.16 hrs, Volume= 0.030 af Tertiary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 911.53' @ 12.16 hrs Surf.Area= 592 sf Storage= 1,445 cf Plug-Flow detention time= 196.4 min calculated for 0.126 af (100% of inflow) Center-of-Mass det. time= 196.4 min ( 976.4 - 780.0 ) Volume Invert Avail.Storage Storage Description #1A 908.00' 735 cf 6.50'W x 91.00'L x 5.50'H Field A 3,253 cf Overall - 1,415 cf Embedded = 1,838 cf x 40.0% Voids #2A 908.50' 1,415 cf CMP Round 54 x 4 Inside #1 Effective Size= 54.0"W x 54.0"H => 15.90 sf x 20.00'L = 318.1 cf Overall Size= 54.0"W x 54.0"H x 20.00'L 4.50' Header x 15.90 sf x 2 = 143.1 cf Inside 2,151 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 908.00'0.333 in/hr Exfiltration over Surface area Phase-In= 0.01' #2 Primary 909.61'4.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Secondary 910.70'12.0" W x 5.4" H Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Tertiary 913.47'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Discarded OutFlow Max=0.00 cfs @ 7.22 hrs HW=908.06' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.00 cfs) Primary OutFlow Max=0.56 cfs @ 12.16 hrs HW=911.53' TW=908.26' (Dynamic Tailwater) 2=Orifice/Grate (Orifice Controls 0.56 cfs @ 6.38 fps) Secondary OutFlow Max=1.68 cfs @ 12.16 hrs HW=911.53' TW=908.26' (Dynamic Tailwater) 3=Orifice/Grate (Orifice Controls 1.68 cfs @ 3.73 fps) Tertiary OutFlow Max=0.00 cfs @ 0.00 hrs HW=908.00' TW=896.46' (Dynamic Tailwater) 4=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) MSE 24-hr 3 10-Year Rainfall=4.27"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 22HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Link 1L: Lotus Lake Inflow Area = 1.193 ac, 18.86% Impervious, Inflow Depth = 2.28" for 10-Year event Inflow = 3.03 cfs @ 12.19 hrs, Volume= 0.227 af Primary = 3.03 cfs @ 12.19 hrs, Volume= 0.227 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Summary for Link 3L: NorthWest Discharge Inflow Area = 1.780 ac, 5.84% Impervious, Inflow Depth = 2.29" for 10-Year event Inflow = 7.43 cfs @ 12.10 hrs, Volume= 0.339 af Primary = 7.43 cfs @ 12.10 hrs, Volume= 0.339 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.41"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 23HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Time span=0.00-400.00 hrs, dt=0.01 hrs, 40001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Runoff Area=0.315 ac 0.00% Impervious Runoff Depth=4.96"Subcatchment E-1: Discharge to Northwest Flow Length=176' Slope=0.0842 '/' Tc=2.8 min CN=79 Runoff=3.17 cfs 0.130 af Runoff Area=0.598 ac 0.00% Impervious Runoff Depth=5.24"Subcatchment E-2: Discharge to Wetland Flow Length=125' Slope=0.1606 '/' Tc=1.5 min CN=WQ Runoff=6.21 cfs 0.261 af Runoff Area=0.597 ac 0.00% Impervious Runoff Depth=4.96"Subcatchment OFF-1: Offsite Discharge to Flow Length=104' Slope=0.0481 '/' Tc=2.4 min CN=79 Runoff=6.02 cfs 0.247 af Runoff Area=0.270 ac 38.52% Impervious Runoff Depth=6.16"Subcatchment S-3: Lot 2 Tc=10.0 min CN=WQ Runoff=2.36 cfs 0.139 af Runoff Area=0.601 ac 15.47% Impervious Runoff Depth=5.47"Subcatchment S-4: (new Subcat) Tc=5.0 min CN=WQ Runoff=5.96 cfs 0.274 af Runoff Area=0.531 ac 24.86% Impervious Runoff Depth=5.78"Subcatchment S-5: (new Subcat) Tc=5.0 min CN=WQ Runoff=5.45 cfs 0.256 af Runoff Area=0.061 ac 0.00% Impervious Runoff Depth=4.74"Subcatchment S-6: (new Subcat) Tc=3.0 min CN=77 Runoff=0.59 cfs 0.024 af Peak Elev=949.33' Storage=1,709 cf Inflow=12.71 cfs 0.626 afPond 2P: Wetland 1 Primary=7.95 cfs 0.626 af Secondary=0.00 cfs 0.000 af Outflow=7.95 cfs 0.626 af Peak Elev=947.12' Storage=3,308 cf Inflow=5.96 cfs 0.274 afPond 4P: Infiltration Block 1 Lot 2 Discarded=0.01 cfs 0.021 af Primary=3.85 cfs 0.253 af Outflow=3.86 cfs 0.274 af Peak Elev=958.00' Storage=2,128 cf Inflow=2.36 cfs 0.139 afPond 5P: Block 2 Lot 3 Infiltration Basin Discarded=0.01 cfs 0.021 af Primary=1.26 cfs 0.118 af Outflow=1.26 cfs 0.139 af Peak Elev=909.29' Inflow=7.95 cfs 0.488 afPond 6P: OCS 502 Outflow=7.95 cfs 0.488 af Peak Elev=913.32' Storage=2,108 cf Inflow=5.45 cfs 0.256 afPond 8P: Lot 1 Block 1 Infiltration Discarded=0.00 cfs 0.021 af Primary=0.79 cfs 0.140 af Secondary=3.35 cfs 0.095 af Tertiary=0.00 cfs 0.000 af Outflow=4.15 cfs 0.256 af Inflow=8.19 cfs 0.512 afLink 1L: Lotus Lake Primary=8.19 cfs 0.512 af Inflow=10.99 cfs 0.756 afLink 3L: NorthWest Discharge Primary=10.99 cfs 0.756 af Total Runoff Area = 2.973 ac Runoff Volume = 1.331 af Average Runoff Depth = 5.37" 88.93% Pervious = 2.644 ac 11.07% Impervious = 0.329 ac MSE 24-hr 3 100-Year Rainfall=7.41"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 24HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment E-1: Discharge to Northwest Runoff = 3.17 cfs @ 12.11 hrs, Volume= 0.130 af, Depth= 4.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.41" Area (ac) CN Description 0.315 79 Woods, Fair, HSG D 0.315 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.8 176 0.0842 1.04 Lag/CN Method, Summary for Subcatchment E-2: Discharge to Wetland Runoff = 6.21 cfs @ 12.10 hrs, Volume= 0.261 af, Depth= 5.24" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.41" Area (ac) CN Description 0.474 77 Woods, Good, HSG D 0.124 98 Water Surface, 0% imp, HSG D 0.598 Weighted Average 0.598 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.5 125 0.1606 1.43 Lag/CN Method, Summary for Subcatchment OFF-1: Offsite Discharge to Wetland Runoff = 6.02 cfs @ 12.10 hrs, Volume= 0.247 af, Depth= 4.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.41" Area (ac) CN Description 0.597 79 Woods, Fair, HSG D 0.597 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.4 104 0.0481 0.71 Lag/CN Method, MSE 24-hr 3 100-Year Rainfall=7.41"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 25HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment S-3: Lot 2 Runoff = 2.36 cfs @ 12.17 hrs, Volume= 0.139 af, Depth= 6.16" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.41" Area (ac) CN Description 0.104 98 Roofs, HSG D * 0.166 84 >75% Grass cover, Good, HSG D 0.270 Weighted Average 0.166 61.48% Pervious Area 0.104 38.52% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Summary for Subcatchment S-4: (new Subcat) Runoff = 5.96 cfs @ 12.12 hrs, Volume= 0.274 af, Depth= 5.47" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.41" Area (ac) CN Description 0.093 98 Roofs, HSG D * 0.270 84 >75% Grass cover, Good, HSG D 0.238 77 Woods, Good, HSG D 0.601 Weighted Average 0.508 84.53% Pervious Area 0.093 15.47% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Summary for Subcatchment S-5: (new Subcat) Runoff = 5.45 cfs @ 12.12 hrs, Volume= 0.256 af, Depth= 5.78" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.41" MSE 24-hr 3 100-Year Rainfall=7.41"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 26HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Area (ac) CN Description 0.132 98 Roofs, HSG D * 0.295 84 >75% Grass cover, Good, HSG D 0.104 77 Woods, Good, HSG D 0.531 Weighted Average 0.399 75.14% Pervious Area 0.132 24.86% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Summary for Subcatchment S-6: (new Subcat) Runoff = 0.59 cfs @ 12.11 hrs, Volume= 0.024 af, Depth= 4.74" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.41" Area (ac) CN Description 0.061 77 Woods, Good, HSG D 0.061 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.0 Direct Entry, Summary for Pond 2P: Wetland 1 [44] Hint: Outlet device #1 is below defined storage [87] Warning: Oscillations may require smaller dt or Finer Routing (severity=583) Inflow Area = 1.465 ac, 7.10% Impervious, Inflow Depth = 5.12" for 100-Year event Inflow = 12.71 cfs @ 12.10 hrs, Volume= 0.626 af Outflow = 7.95 cfs @ 12.13 hrs, Volume= 0.626 af, Atten= 37%, Lag= 2.0 min Primary = 7.95 cfs @ 12.13 hrs, Volume= 0.626 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 949.33' @ 12.13 hrs Surf.Area= 6,945 sf Storage= 1,709 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 0.6 min ( 785.5 - 784.9 ) Volume Invert Avail.Storage Storage Description #1 949.00' 7,385 cf Wetland (Prismatic) Listed below (Recalc) MSE 24-hr 3 100-Year Rainfall=7.41"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 27HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 949.00 3,352 0 0 949.40 7,681 2,207 2,207 949.60 8,387 1,607 3,813 949.80 8,933 1,732 5,545 950.00 9,460 1,839 7,385 Device Routing Invert Outlet Devices #1 Primary 947.82'21.0" W x 15.0" H, R=10.8"/33.1" Pipe Arch CMP_Arch_1/2 21x15 L= 69.4' CMP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 947.82' / 939.30' S= 0.1228 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 1.74 sf #2 Secondary 949.45'4.5' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Primary OutFlow Max=7.95 cfs @ 12.13 hrs HW=949.33' TW=0.00' (Dynamic Tailwater) 1=CMP_Arch_1/2 21x15 (Inlet Controls 7.95 cfs @ 4.56 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=949.00' TW=0.00' (Dynamic Tailwater) 2=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 4P: Infiltration Block 1 Lot 2 Inflow Area = 0.601 ac, 15.47% Impervious, Inflow Depth = 5.47" for 100-Year event Inflow = 5.96 cfs @ 12.12 hrs, Volume= 0.274 af Outflow = 3.86 cfs @ 12.18 hrs, Volume= 0.274 af, Atten= 35%, Lag= 3.2 min Discarded = 0.01 cfs @ 7.04 hrs, Volume= 0.021 af Primary = 3.85 cfs @ 12.18 hrs, Volume= 0.253 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 947.12' @ 12.18 hrs Surf.Area= 941 sf Storage= 3,308 cf Plug-Flow detention time= 67.5 min calculated for 0.274 af (100% of inflow) Center-of-Mass det. time= 67.5 min ( 843.6 - 776.1 ) Volume Invert Avail.Storage Storage Description #1A 941.94' 1,163 cf 13.25'W x 71.00'L x 5.50'H Field A 5,174 cf Overall - 2,266 cf Embedded = 2,908 cf x 40.0% Voids #2A 942.44' 2,266 cf CMP Round 54 x 6 Inside #1 Effective Size= 54.0"W x 54.0"H => 15.90 sf x 20.00'L = 318.1 cf Overall Size= 54.0"W x 54.0"H x 20.00'L 6 Chambers in 2 Rows 11.25' Header x 15.90 sf x 2 = 357.8 cf Inside 3,429 cf Total Available Storage Storage Group A created with Chamber Wizard MSE 24-hr 3 100-Year Rainfall=7.41"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 28HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Discarded 941.94'0.317 in/hr Exfiltration over Surface area Phase-In= 0.01' #2 Primary 928.46'12.0" Round Culvert L= 135.8' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 928.46' / 912.00' S= 0.1212 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 0.79 sf #3 Device 2 935.82'12.0" Round Culvert L= 60.5' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 935.82' / 933.41' S= 0.0398 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 0.79 sf #4 Device 3 942.80'4.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Device 3 944.97'12.0" W x 5.1" H Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #6 Device 3 947.06'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Discarded OutFlow Max=0.01 cfs @ 7.04 hrs HW=942.00' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=3.83 cfs @ 12.18 hrs HW=947.11' TW=909.28' (Dynamic Tailwater) 2=Culvert (Passes 3.83 cfs of 15.75 cfs potential flow) 3=Culvert (Passes 3.83 cfs of 12.76 cfs potential flow) 4=Orifice/Grate (Orifice Controls 0.86 cfs @ 9.80 fps) 5=Orifice/Grate (Orifice Controls 2.84 cfs @ 6.68 fps) 6=Broad-Crested Rectangular Weir (Weir Controls 0.13 cfs @ 0.64 fps) Summary for Pond 5P: Block 2 Lot 3 Infiltration Basin Inflow Area = 0.270 ac, 38.52% Impervious, Inflow Depth = 6.16" for 100-Year event Inflow = 2.36 cfs @ 12.17 hrs, Volume= 0.139 af Outflow = 1.26 cfs @ 12.30 hrs, Volume= 0.139 af, Atten= 46%, Lag= 7.6 min Discarded = 0.01 cfs @ 6.48 hrs, Volume= 0.021 af Primary = 1.26 cfs @ 12.30 hrs, Volume= 0.118 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 958.00' @ 12.30 hrs Surf.Area= 742 sf Storage= 2,128 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 125.0 min ( 891.6 - 766.6 ) Volume Invert Avail.Storage Storage Description #1A 953.50' 806 cf 10.75'W x 69.00'L x 4.50'H Field A 3,338 cf Overall - 1,323 cf Embedded = 2,015 cf x 40.0% Voids #2A 954.00' 1,323 cf CMP Round 42 x 6 Inside #1 Effective Size= 42.0"W x 42.0"H => 9.62 sf x 20.00'L = 192.4 cf Overall Size= 42.0"W x 42.0"H x 20.00'L 6 Chambers in 2 Rows 8.75' Header x 9.62 sf x 2 = 168.4 cf Inside 2,129 cf Total Available Storage MSE 24-hr 3 100-Year Rainfall=7.41"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 29HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 953.50'0.375 in/hr Exfiltration over Surface area #2 Primary 954.48'12.0" Round Culvert L= 15.2' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 954.48' / 954.39' S= 0.0059 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 0.79 sf #3 Device 2 954.60'4.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Device 2 957.89'5.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Discarded OutFlow Max=0.01 cfs @ 6.48 hrs HW=953.55' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=1.25 cfs @ 12.30 hrs HW=958.00' TW=949.00' (Dynamic Tailwater) 2=Culvert (Passes 1.25 cfs of 5.19 cfs potential flow) 3=Orifice/Grate (Orifice Controls 0.76 cfs @ 8.66 fps) 4=Broad-Crested Rectangular Weir (Weir Controls 0.50 cfs @ 0.92 fps) Summary for Pond 6P: OCS 502 Inflow Area = 1.132 ac, 19.88% Impervious, Inflow Depth = 5.17" for 100-Year event Inflow = 7.95 cfs @ 12.17 hrs, Volume= 0.488 af Outflow = 7.95 cfs @ 12.17 hrs, Volume= 0.488 af, Atten= 0%, Lag= 0.0 min Primary = 7.95 cfs @ 12.17 hrs, Volume= 0.488 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 909.29' @ 12.17 hrs Flood Elev= 912.00' Device Routing Invert Outlet Devices #1 Primary 896.46'15.0" Round Culvert L= 34.4' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 896.46' / 896.35' S= 0.0032 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #2 Device 1 907.51'15.0" Round Culvert L= 33.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 907.51' / 906.00' S= 0.0458 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf Primary OutFlow Max=7.93 cfs @ 12.17 hrs HW=909.29' TW=0.00' (Dynamic Tailwater) 1=Culvert (Passes 7.93 cfs of 20.64 cfs potential flow) 2=Culvert (Inlet Controls 7.93 cfs @ 6.47 fps) MSE 24-hr 3 100-Year Rainfall=7.41"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 30HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Pond 8P: Lot 1 Block 1 Infiltration Inflow Area = 0.531 ac, 24.86% Impervious, Inflow Depth = 5.78" for 100-Year event Inflow = 5.45 cfs @ 12.12 hrs, Volume= 0.256 af Outflow = 4.15 cfs @ 12.16 hrs, Volume= 0.256 af, Atten= 24%, Lag= 2.5 min Discarded = 0.00 cfs @ 4.70 hrs, Volume= 0.021 af Primary = 0.79 cfs @ 12.16 hrs, Volume= 0.140 af Secondary = 3.35 cfs @ 12.16 hrs, Volume= 0.095 af Tertiary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 913.32' @ 12.16 hrs Surf.Area= 592 sf Storage= 2,108 cf Plug-Flow detention time= 108.4 min calculated for 0.256 af (100% of inflow) Center-of-Mass det. time= 108.4 min ( 878.0 - 769.6 ) Volume Invert Avail.Storage Storage Description #1A 908.00' 735 cf 6.50'W x 91.00'L x 5.50'H Field A 3,253 cf Overall - 1,415 cf Embedded = 1,838 cf x 40.0% Voids #2A 908.50' 1,415 cf CMP Round 54 x 4 Inside #1 Effective Size= 54.0"W x 54.0"H => 15.90 sf x 20.00'L = 318.1 cf Overall Size= 54.0"W x 54.0"H x 20.00'L 4.50' Header x 15.90 sf x 2 = 143.1 cf Inside 2,151 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 908.00'0.333 in/hr Exfiltration over Surface area Phase-In= 0.01' #2 Primary 909.61'4.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Secondary 910.70'12.0" W x 5.4" H Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Tertiary 913.47'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Discarded OutFlow Max=0.00 cfs @ 4.70 hrs HW=908.06' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.00 cfs) Primary OutFlow Max=0.79 cfs @ 12.16 hrs HW=913.31' TW=909.26' (Dynamic Tailwater) 2=Orifice/Grate (Orifice Controls 0.79 cfs @ 9.05 fps) Secondary OutFlow Max=3.35 cfs @ 12.16 hrs HW=913.31' TW=909.26' (Dynamic Tailwater) 3=Orifice/Grate (Orifice Controls 3.35 cfs @ 7.44 fps) Tertiary OutFlow Max=0.00 cfs @ 0.00 hrs HW=908.00' TW=896.46' (Dynamic Tailwater) 4=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) MSE 24-hr 3 100-Year Rainfall=7.41"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 31HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Link 1L: Lotus Lake Inflow Area = 1.193 ac, 18.86% Impervious, Inflow Depth = 5.15" for 100-Year event Inflow = 8.19 cfs @ 12.17 hrs, Volume= 0.512 af Primary = 8.19 cfs @ 12.17 hrs, Volume= 0.512 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Summary for Link 3L: NorthWest Discharge Inflow Area = 1.780 ac, 5.84% Impervious, Inflow Depth = 5.10" for 100-Year event Inflow = 10.99 cfs @ 12.11 hrs, Volume= 0.756 af Primary = 10.99 cfs @ 12.11 hrs, Volume= 0.756 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Table of Contentspdrn Printed 10/20/2022Prepared by {enter your company name here} HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC TABLE OF CONTENTS Project Reports 1 Routing Diagram 2 Rainfall Events Listing (selected events) 3 Area Listing (selected nodes) 4 Soil Listing (selected nodes) 2-Year Event 5 Node Listing 6 Subcat E-1: Discharge to Northwest 7 Subcat E-2: Discharge to Wetland 7 Subcat OFF-1: Offsite Discharge to Wetland 7 Subcat S-3: Lot 2 8 Subcat S-4: (new Subcat) 8 Subcat S-5: (new Subcat) 9 Subcat S-6: (new Subcat) 9 Pond 2P: Wetland 1 10 Pond 4P: Infiltration Block 1 Lot 2 11 Pond 5P: Block 2 Lot 3 Infiltration Basin 12 Pond 6P: OCS 502 12 Pond 8P: Lot 1 Block 1 Infiltration 13 Link 1L: Lotus Lake 14 Link 3L: NorthWest Discharge 10-Year Event 14 Node Listing 15 Subcat E-1: Discharge to Northwest 16 Subcat E-2: Discharge to Wetland 16 Subcat OFF-1: Offsite Discharge to Wetland 16 Subcat S-3: Lot 2 17 Subcat S-4: (new Subcat) 17 Subcat S-5: (new Subcat) 18 Subcat S-6: (new Subcat) 18 Pond 2P: Wetland 1 19 Pond 4P: Infiltration Block 1 Lot 2 20 Pond 5P: Block 2 Lot 3 Infiltration Basin 21 Pond 6P: OCS 502 21 Pond 8P: Lot 1 Block 1 Infiltration 22 Link 1L: Lotus Lake 23 Link 3L: NorthWest Discharge 100-Year Event 23 Node Listing 24 Subcat E-1: Discharge to Northwest 25 Subcat E-2: Discharge to Wetland 25 Subcat OFF-1: Offsite Discharge to Wetland 25 Subcat S-3: Lot 2 Table of Contentspdrn Printed 10/20/2022Prepared by {enter your company name here} HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC 26 Subcat S-4: (new Subcat) 26 Subcat S-5: (new Subcat) 27 Subcat S-6: (new Subcat) 27 Pond 2P: Wetland 1 28 Pond 4P: Infiltration Block 1 Lot 2 29 Pond 5P: Block 2 Lot 3 Infiltration Basin 30 Pond 6P: OCS 502 30 Pond 8P: Lot 1 Block 1 Infiltration 31 Link 1L: Lotus Lake 32 Link 3L: NorthWest Discharge E-1 Discharge to Northwest E-2 Discharge to Wetland OFF-1 Offsite Discharge to Wetland S-3 Lot 2 S-4 (new Subcat) S-5 (new Subcat) S-6 (new Subcat) 2P Wetland 1 4P Infiltration Block 1 Lot 2 5P Block 2 Lot 3 Infiltration Basin 6PCB OCS 502 8P Lot 1 Block 1 Infiltration 1L Lotus Lake 3L NorthWest Discharge Routing Diagram for pdrn Prepared by {enter your company name here}, Printed 10/20/2022 HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcat Reach Pond Link pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 2HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Rainfall Events Listing (selected events) Event# Event Name Storm Type Curve Mode Duration (hours) B/B Depth (inches) AMC 1 2-Year MSE 24-hr 3 Default 24.00 1 2.87 2 2 10-Year MSE 24-hr 3 Default 24.00 1 4.27 2 3 100-Year MSE 24-hr 3 Default 24.00 1 7.41 2 MSE 24-hr 3 2-Year Rainfall=2.87"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 3HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment E-1: Discharge to Northwest Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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 MSE 24-hr 3 2-Year Rainfall=2.87" Runoff Area=0.315 ac Runoff Volume=0.029 af Runoff Depth=1.09" Flow Length=176' Slope=0.0842 '/' Tc=2.8 min CN=79 0.74 cfs Subcatchment E-2: Discharge to Wetland Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)1 0 MSE 24-hr 3 2-Year Rainfall=2.87" Runoff Area=0.598 ac Runoff Volume=0.066 af Runoff Depth=1.33" Flow Length=125' Slope=0.1606 '/' Tc=1.5 min CN=WQ 1.63 cfs MSE 24-hr 3 2-Year Rainfall=2.87"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 4HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment OFF-1: Offsite Discharge to Wetland Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)1 0 MSE 24-hr 3 2-Year Rainfall=2.87" Runoff Area=0.597 ac Runoff Volume=0.054 af Runoff Depth=1.09" Flow Length=104' Slope=0.0481 '/' Tc=2.4 min CN=79 1.43 cfs Subcatchment S-3: Lot 2 Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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 MSE 24-hr 3 2-Year Rainfall=2.87" Runoff Area=0.270 ac Runoff Volume=0.042 af Runoff Depth=1.88" Tc=10.0 min CN=WQ 0.74 cfs MSE 24-hr 3 2-Year Rainfall=2.87"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 5HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment S-4: (new Subcat) Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)1 0 MSE 24-hr 3 2-Year Rainfall=2.87" Runoff Area=0.601 ac Runoff Volume=0.072 af Runoff Depth=1.43" Tc=5.0 min CN=WQ 1.61 cfs Subcatchment S-5: (new Subcat) Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)1 0 MSE 24-hr 3 2-Year Rainfall=2.87" Runoff Area=0.531 ac Runoff Volume=0.072 af Runoff Depth=1.63" Tc=5.0 min CN=WQ 1.59 cfs MSE 24-hr 3 2-Year Rainfall=2.87"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 6HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment S-6: (new Subcat) Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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 MSE 24-hr 3 2-Year Rainfall=2.87" Runoff Area=0.061 ac Runoff Volume=0.005 af Runoff Depth=0.98" Tc=3.0 min CN=77 0.13 cfs Pond 2P: Wetland 1 Inflow Outflow Primary Secondary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)3 2 1 0 Inflow Area=1.465 ac Peak Elev=949.00' Storage=0 cf 3.04 cfs3.04 cfs3.04 cfs 0.00 cfs MSE 24-hr 3 2-Year Rainfall=2.87"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 7HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Pond 4P: Infiltration Block 1 Lot 2 Inflow Outflow Discarded Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)1 0 Inflow Area=0.601 ac Peak Elev=943.98' Storage=1,181 cf 1.61 cfs 0.43 cfs 0.01 cfs 0.42 cfs Pond 5P: Block 2 Lot 3 Infiltration Basin Inflow Outflow Discarded Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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=0.270 ac Peak Elev=955.20' Storage=747 cf 0.74 cfs 0.28 cfs 0.01 cfs 0.28 cfs MSE 24-hr 3 2-Year Rainfall=2.87"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 8HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Pond 6P: OCS 502 Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)1 0 Inflow Area=1.132 ac Peak Elev=907.98' 1.22 cfs1.22 cfs Pond 8P: Lot 1 Block 1 Infiltration Inflow Outflow Discarded Primary Secondary Tertiary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)1 0 Inflow Area=0.531 ac Peak Elev=910.94' Storage=1,164 cf 1.59 cfs 0.82 cfs 0.00 cfs 0.45 cfs 0.37 cfs 0.00 cfs MSE 24-hr 3 2-Year Rainfall=2.87"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 9HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Link 1L: Lotus Lake Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)1 0 Inflow Area=1.193 ac 1.27 cfs1.27 cfs Link 3L: NorthWest Discharge Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)4 3 2 1 0 Inflow Area=1.780 ac 3.77 cfs3.77 cfs MSE 24-hr 3 10-Year Rainfall=4.27"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 10HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment E-1: Discharge to Northwest Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)1 0 MSE 24-hr 3 10-Year Rainfall=4.27" Runoff Area=0.315 ac Runoff Volume=0.057 af Runoff Depth=2.18" Flow Length=176' Slope=0.0842 '/' Tc=2.8 min CN=79 1.46 cfs Subcatchment E-2: Discharge to Wetland Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)3 2 1 0 MSE 24-hr 3 10-Year Rainfall=4.27" Runoff Area=0.598 ac Runoff Volume=0.122 af Runoff Depth=2.44" Flow Length=125' Slope=0.1606 '/' Tc=1.5 min CN=WQ 2.99 cfs MSE 24-hr 3 10-Year Rainfall=4.27"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 11HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment OFF-1: Offsite Discharge to Wetland Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)3 2 1 0 MSE 24-hr 3 10-Year Rainfall=4.27" Runoff Area=0.597 ac Runoff Volume=0.109 af Runoff Depth=2.18" Flow Length=104' Slope=0.0481 '/' Tc=2.4 min CN=79 2.80 cfs Subcatchment S-3: Lot 2 Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)1 0 MSE 24-hr 3 10-Year Rainfall=4.27" Runoff Area=0.270 ac Runoff Volume=0.071 af Runoff Depth=3.16" Tc=10.0 min CN=WQ 1.23 cfs MSE 24-hr 3 10-Year Rainfall=4.27"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 12HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment S-4: (new Subcat) Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)3 2 1 0 MSE 24-hr 3 10-Year Rainfall=4.27" Runoff Area=0.601 ac Runoff Volume=0.130 af Runoff Depth=2.60" Tc=5.0 min CN=WQ 2.91 cfs Subcatchment S-5: (new Subcat) Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)3 2 1 0 MSE 24-hr 3 10-Year Rainfall=4.27" Runoff Area=0.531 ac Runoff Volume=0.126 af Runoff Depth=2.85" Tc=5.0 min CN=WQ 2.76 cfs MSE 24-hr 3 10-Year Rainfall=4.27"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 13HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment S-6: (new Subcat) Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)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 MSE 24-hr 3 10-Year Rainfall=4.27" Runoff Area=0.061 ac Runoff Volume=0.010 af Runoff Depth=2.03" Tc=3.0 min CN=77 0.26 cfs Pond 2P: Wetland 1 Inflow Outflow Primary Secondary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)6 5 4 3 2 1 0 Inflow Area=1.465 ac Peak Elev=949.00' Storage=3 cf 6.02 cfs5.98 cfs5.98 cfs 0.00 cfs MSE 24-hr 3 10-Year Rainfall=4.27"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 14HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Pond 4P: Infiltration Block 1 Lot 2 Inflow Outflow Discarded Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)3 2 1 0 Inflow Area=0.601 ac Peak Elev=945.21' Storage=2,112 cf 2.91 cfs 1.02 cfs 0.01 cfs 1.02 cfs Pond 5P: Block 2 Lot 3 Infiltration Basin Inflow Outflow Discarded Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)1 0 Inflow Area=0.270 ac Peak Elev=955.98' Storage=1,198 cf 1.23 cfs 0.47 cfs 0.01 cfs 0.46 cfs MSE 24-hr 3 10-Year Rainfall=4.27"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 15HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Pond 6P: OCS 502 Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)3 2 1 0 Inflow Area=1.132 ac Peak Elev=908.28' 2.93 cfs2.93 cfs Pond 8P: Lot 1 Block 1 Infiltration Inflow Outflow Discarded Primary Secondary Tertiary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)3 2 1 0 Inflow Area=0.531 ac Peak Elev=911.53' Storage=1,445 cf 2.76 cfs 2.24 cfs 0.00 cfs 0.56 cfs 1.68 cfs 0.00 cfs MSE 24-hr 3 10-Year Rainfall=4.27"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 16HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Link 1L: Lotus Lake Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)3 2 1 0 Inflow Area=1.193 ac 3.03 cfs3.03 cfs Link 3L: NorthWest Discharge Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=1.780 ac 7.43 cfs7.43 cfs MSE 24-hr 3 100-Year Rainfall=7.41"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 17HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment E-1: Discharge to Northwest Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)3 2 1 0 MSE 24-hr 3 100-Year Rainfall=7.41" Runoff Area=0.315 ac Runoff Volume=0.130 af Runoff Depth=4.96" Flow Length=176' Slope=0.0842 '/' Tc=2.8 min CN=79 3.17 cfs Subcatchment E-2: Discharge to Wetland Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)6 5 4 3 2 1 0 MSE 24-hr 3 100-Year Rainfall=7.41" Runoff Area=0.598 ac Runoff Volume=0.261 af Runoff Depth=5.24" Flow Length=125' Slope=0.1606 '/' Tc=1.5 min CN=WQ 6.21 cfs MSE 24-hr 3 100-Year Rainfall=7.41"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 18HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment OFF-1: Offsite Discharge to Wetland Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)6 5 4 3 2 1 0 MSE 24-hr 3 100-Year Rainfall=7.41" Runoff Area=0.597 ac Runoff Volume=0.247 af Runoff Depth=4.96" Flow Length=104' Slope=0.0481 '/' Tc=2.4 min CN=79 6.02 cfs Subcatchment S-3: Lot 2 Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)2 1 0 MSE 24-hr 3 100-Year Rainfall=7.41" Runoff Area=0.270 ac Runoff Volume=0.139 af Runoff Depth=6.16" Tc=10.0 min CN=WQ 2.36 cfs MSE 24-hr 3 100-Year Rainfall=7.41"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 19HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment S-4: (new Subcat) Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)6 5 4 3 2 1 0 MSE 24-hr 3 100-Year Rainfall=7.41" Runoff Area=0.601 ac Runoff Volume=0.274 af Runoff Depth=5.47" Tc=5.0 min CN=WQ 5.96 cfs Subcatchment S-5: (new Subcat) Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)6 5 4 3 2 1 0 MSE 24-hr 3 100-Year Rainfall=7.41" Runoff Area=0.531 ac Runoff Volume=0.256 af Runoff Depth=5.78" Tc=5.0 min CN=WQ 5.45 cfs MSE 24-hr 3 100-Year Rainfall=7.41"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 20HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcatchment S-6: (new Subcat) Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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 MSE 24-hr 3 100-Year Rainfall=7.41" Runoff Area=0.061 ac Runoff Volume=0.024 af Runoff Depth=4.74" Tc=3.0 min CN=77 0.59 cfs Pond 2P: Wetland 1 Inflow Outflow Primary Secondary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=1.465 ac Peak Elev=949.33' Storage=1,709 cf 12.71 cfs 7.95 cfs7.95 cfs 0.00 cfs MSE 24-hr 3 100-Year Rainfall=7.41"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 21HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Pond 4P: Infiltration Block 1 Lot 2 Inflow Outflow Discarded Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)6 5 4 3 2 1 0 Inflow Area=0.601 ac Peak Elev=947.12' Storage=3,308 cf 5.96 cfs 3.86 cfs 0.01 cfs 3.85 cfs Pond 5P: Block 2 Lot 3 Infiltration Basin Inflow Outflow Discarded Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)2 1 0 Inflow Area=0.270 ac Peak Elev=958.00' Storage=2,128 cf 2.36 cfs 1.26 cfs 0.01 cfs 1.26 cfs MSE 24-hr 3 100-Year Rainfall=7.41"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 22HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Pond 6P: OCS 502 Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=1.132 ac Peak Elev=909.29' 7.95 cfs7.95 cfs Pond 8P: Lot 1 Block 1 Infiltration Inflow Outflow Discarded Primary Secondary Tertiary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)6 5 4 3 2 1 0 Inflow Area=0.531 ac Peak Elev=913.32' Storage=2,108 cf 5.45 cfs 4.15 cfs 0.00 cfs 0.79 cfs 3.35 cfs 0.00 cfs MSE 24-hr 3 100-Year Rainfall=7.41"pdrn Printed 10/20/2022Prepared by {enter your company name here} Page 23HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Link 1L: Lotus Lake Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)9 8 7 6 5 4 3 2 1 0 Inflow Area=1.193 ac 8.19 cfs8.19 cfs Link 3L: NorthWest Discharge Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=1.780 ac 10.99 cfs10.99 cfs Table of Contentspdrn Printed 10/20/2022Prepared by {enter your company name here} HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC TABLE OF CONTENTS Project Reports 1 Routing Diagram 2 Rainfall Events Listing (selected events) 2-Year Event 3 Subcat E-1: Discharge to Northwest 4 Subcat E-2: Discharge to Wetland 4 Subcat OFF-1: Offsite Discharge to Wetland 5 Subcat S-3: Lot 2 5 Subcat S-4: (new Subcat) 6 Subcat S-5: (new Subcat) 6 Subcat S-6: (new Subcat) 7 Pond 2P: Wetland 1 7 Pond 4P: Infiltration Block 1 Lot 2 8 Pond 5P: Block 2 Lot 3 Infiltration Basin 8 Pond 6P: OCS 502 9 Pond 8P: Lot 1 Block 1 Infiltration 9 Link 1L: Lotus Lake 10 Link 3L: NorthWest Discharge 10-Year Event 10 Subcat E-1: Discharge to Northwest 11 Subcat E-2: Discharge to Wetland 11 Subcat OFF-1: Offsite Discharge to Wetland 12 Subcat S-3: Lot 2 12 Subcat S-4: (new Subcat) 13 Subcat S-5: (new Subcat) 13 Subcat S-6: (new Subcat) 14 Pond 2P: Wetland 1 14 Pond 4P: Infiltration Block 1 Lot 2 15 Pond 5P: Block 2 Lot 3 Infiltration Basin 15 Pond 6P: OCS 502 16 Pond 8P: Lot 1 Block 1 Infiltration 16 Link 1L: Lotus Lake 17 Link 3L: NorthWest Discharge 100-Year Event 17 Subcat E-1: Discharge to Northwest 18 Subcat E-2: Discharge to Wetland 18 Subcat OFF-1: Offsite Discharge to Wetland 19 Subcat S-3: Lot 2 19 Subcat S-4: (new Subcat) 20 Subcat S-5: (new Subcat) 20 Subcat S-6: (new Subcat) 21 Pond 2P: Wetland 1 21 Pond 4P: Infiltration Block 1 Lot 2 Table of Contentspdrn Printed 10/20/2022Prepared by {enter your company name here} HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC 22 Pond 5P: Block 2 Lot 3 Infiltration Basin 22 Pond 6P: OCS 502 23 Pond 8P: Lot 1 Block 1 Infiltration 23 Link 1L: Lotus Lake 24 Link 3L: NorthWest Discharge E-1 Discharge to Northwest E-2 Discharge to Wetland E-3 Existing Home and discharge to Lotus lake OFF-1 Offsite Discharge to Wetland 2P Wetland 1 1L Lotus Lake3L NorthWest Discharge Routing Diagram for edrn - snow Prepared by {enter your company name here}, Printed 8/15/2022 HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcat Reach Pond Link edrn - snow Printed 8/15/2022Prepared by {enter your company name here} Page 2HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Area Listing (all nodes) Area (acres) CN Description (subcatchment-numbers) 0.128 100 >75% Grass cover, Good, HSG D (E-3) 0.256 100 Water Surface, 0% imp, HSG D (E-2, E-3, OFF-1) 2.515 100 Woods, Fair, HSG D (E-1, E-2, E-3, OFF-1) 2.899 100 TOTAL AREA edrn - snow Printed 8/15/2022Prepared by {enter your company name here} Page 3HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Soil Listing (all nodes) Area (acres) Soil Group Subcatchment Numbers 0.000 HSG A 0.000 HSG B 0.000 HSG C 2.899 HSG D E-1, E-2, E-3, OFF-1 0.000 Other 2.899 TOTAL AREA Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20"edrn - snow Printed 8/15/2022Prepared by {enter your company name here} Page 4HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment E-1: Discharge to Northwest [49] Hint: Tc<2dt may require smaller dt Runoff = 0.06 cfs @ 121.20 hrs, Volume= 0.189 af, Depth= 7.20" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20" Area (ac) CN Description * 0.315 100 Woods, Fair, HSG D 0.315 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.1 176 0.0842 2.58 Lag/CN Method, Subcatchment E-1: Discharge to Northwest Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)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 10 day-100 Yr Snow Rainfall=7.20" Runoff Area=0.315 ac Runoff Volume=0.189 af Runoff Depth=7.20" Flow Length=176' Slope=0.0842 '/' Tc=1.1 min CN=100 0.06 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20"edrn - snow Printed 8/15/2022Prepared by {enter your company name here} Page 5HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment E-2: Discharge to Wetland [49] Hint: Tc<2dt may require smaller dt Runoff = 0.16 cfs @ 121.19 hrs, Volume= 0.485 af, Depth= 7.20" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20" Area (ac) CN Description * 0.685 100 Woods, Fair, HSG D * 0.124 100 Water Surface, 0% imp, HSG D 0.809 Weighted Average 0.124 15.33% Pervious Area 0.685 84.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.6 125 0.1606 3.33 Lag/CN Method, Subcatchment E-2: Discharge to Wetland Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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 10 day-100 Yr Snow Rainfall=7.20" Runoff Area=0.809 ac Runoff Volume=0.485 af Runoff Depth=7.20" Flow Length=125' Slope=0.1606 '/' Tc=0.6 min CN=WQ 0.16 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20"edrn - snow Printed 8/15/2022Prepared by {enter your company name here} Page 6HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment E-3: Existing Home and discharge to Lotus lake Runoff = 0.23 cfs @ 121.21 hrs, Volume= 0.707 af, Depth= 7.20" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20" Area (ac) CN Description * 0.077 100 Water Surface, 0% imp, HSG D * 0.973 100 Woods, Fair, HSG D * 0.128 100 >75% Grass cover, Good, HSG D 1.178 Weighted Average 0.077 6.54% Pervious Area 1.101 93.46% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.1 477 0.1261 3.86 Lag/CN Method, Subcatchment E-3: Existing Home and discharge to Lotus lake Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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 Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20" Runoff Area=1.178 ac Runoff Volume=0.707 af Runoff Depth=7.20" Flow Length=477' Slope=0.1261 '/' Tc=2.1 min CN=WQ 0.23 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20"edrn - snow Printed 8/15/2022Prepared by {enter your company name here} Page 7HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment OFF-1: Offsite Discharge to Wetland [49] Hint: Tc<2dt may require smaller dt Runoff = 0.11 cfs @ 121.20 hrs, Volume= 0.358 af, Depth= 7.20" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20" Area (ac) CN Description * 0.542 100 Woods, Fair, HSG D * 0.055 100 Water Surface, 0% imp, HSG D 0.597 Weighted Average 0.055 9.21% Pervious Area 0.542 90.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.0 104 0.0481 1.76 Lag/CN Method, Subcatchment OFF-1: Offsite Discharge to Wetland Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)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 Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20" Runoff Area=0.597 ac Runoff Volume=0.358 af Runoff Depth=7.20" Flow Length=104' Slope=0.0481 '/' Tc=1.0 min CN=WQ 0.11 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20"edrn - snow Printed 8/15/2022Prepared by {enter your company name here} Page 8HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2P: Wetland 1 Inflow Area = 1.406 ac, 87.27% Impervious, Inflow Depth = 7.20" for 10 day-100 Yr Snow event Inflow = 0.27 cfs @ 121.20 hrs, Volume= 0.844 af Outflow = 0.27 cfs @ 121.22 hrs, Volume= 0.839 af, Atten= 0%, Lag= 1.8 min Primary = 0.27 cfs @ 121.22 hrs, Volume= 0.839 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Starting Elev= 949.00' Surf.Area= 3,352 sf Storage= 651 cf Peak Elev= 949.07' @ 121.22 hrs Surf.Area= 4,391 sf Storage= 935 cf (284 cf above start) Plug-Flow detention time= 326.7 min calculated for 0.824 af (98% of inflow) Center-of-Mass det. time= 45.9 min ( 7,229.1 - 7,183.2 ) Volume Invert Avail.Storage Storage Description #1 948.40' 6,753 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 948.40 19 0 0 948.60 254 27 27 948.80 1,316 157 184 949.00 3,352 467 651 949.20 6,184 954 1,605 949.40 8,320 1,450 3,055 949.60 9,290 1,761 4,816 949.80 10,075 1,936 6,753 Device Routing Invert Outlet Devices #1 Primary 949.05'23.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Primary OutFlow Max=0.27 cfs @ 121.22 hrs HW=949.07' TW=0.00' (Dynamic Tailwater) 1=Sharp-Crested Rectangular Weir (Weir Controls 0.27 cfs @ 0.50 fps) Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20"edrn - snow Printed 8/15/2022Prepared by {enter your company name here} Page 9HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Pond 2P: Wetland 1 Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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=1.406 ac Peak Elev=949.07' Storage=935 cf 0.27 cfs0.27 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20"edrn - snow Printed 8/15/2022Prepared by {enter your company name here} Page 10HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 2P: Wetland 1 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 948.40 19 0 948.41 31 0 948.42 42 1 948.43 54 1 948.44 66 2 948.45 78 2 948.46 89 3 948.47 101 4 948.48 113 5 948.49 125 6 948.50 137 8 948.51 148 9 948.52 160 11 948.53 172 12 948.54 183 14 948.55 195 16 948.56 207 18 948.57 219 20 948.58 230 22 948.59 242 25 948.60 254 27 948.61 307 30 948.62 360 33 948.63 413 37 948.64 466 42 948.65 519 47 948.66 573 52 948.67 626 58 948.68 679 65 948.69 732 72 948.70 785 79 948.71 838 87 948.72 891 96 948.73 944 105 948.74 997 115 948.75 1,051 125 948.76 1,104 136 948.77 1,157 147 948.78 1,210 159 948.79 1,263 171 948.80 1,316 184 948.81 1,418 198 948.82 1,520 213 948.83 1,621 228 948.84 1,723 245 948.85 1,825 263 948.86 1,927 282 948.87 2,029 301 948.88 2,130 322 948.89 2,232 344 948.90 2,334 367 948.91 2,436 391 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 948.92 2,538 416 948.93 2,639 441 948.94 2,741 468 948.95 2,843 496 948.96 2,945 525 948.97 3,047 555 948.98 3,148 586 948.99 3,250 618 949.00 3,352 651 949.01 3,494 685 949.02 3,635 721 949.03 3,777 758 949.04 3,918 797 949.05 4,060 836 949.06 4,202 878 949.07 4,343 920 949.08 4,485 965 949.09 4,626 1,010 949.10 4,768 1,057 949.11 4,910 1,105 949.12 5,051 1,155 949.13 5,193 1,207 949.14 5,334 1,259 949.15 5,476 1,313 949.16 5,618 1,369 949.17 5,759 1,426 949.18 5,901 1,484 949.19 6,042 1,544 949.20 6,184 1,605 949.21 6,291 1,667 949.22 6,398 1,731 949.23 6,504 1,795 949.24 6,611 1,861 949.25 6,718 1,927 949.26 6,825 1,995 949.27 6,932 2,064 949.28 7,038 2,134 949.29 7,145 2,205 949.30 7,252 2,276 949.31 7,359 2,350 949.32 7,466 2,424 949.33 7,572 2,499 949.34 7,679 2,575 949.35 7,786 2,652 949.36 7,893 2,731 949.37 8,000 2,810 949.38 8,106 2,891 949.39 8,213 2,972 949.40 8,320 3,055 949.41 8,368 3,139 949.42 8,417 3,222 949.43 8,465 3,307 Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20"edrn - snow Printed 8/15/2022Prepared by {enter your company name here} Page 11HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 2P: Wetland 1 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 949.44 8,514 3,392 949.45 8,562 3,477 949.46 8,611 3,563 949.47 8,660 3,649 949.48 8,708 3,736 949.49 8,757 3,824 949.50 8,805 3,911 949.51 8,853 4,000 949.52 8,902 4,088 949.53 8,950 4,178 949.54 8,999 4,267 949.55 9,047 4,358 949.56 9,096 4,448 949.57 9,144 4,540 949.58 9,193 4,631 949.59 9,242 4,723 949.60 9,290 4,816 949.61 9,329 4,909 949.62 9,368 5,003 949.63 9,408 5,097 949.64 9,447 5,191 949.65 9,486 5,286 949.66 9,525 5,381 949.67 9,565 5,476 949.68 9,604 5,572 949.69 9,643 5,668 949.70 9,682 5,765 949.71 9,722 5,862 949.72 9,761 5,959 949.73 9,800 6,057 949.74 9,840 6,155 949.75 9,879 6,254 949.76 9,918 6,353 949.77 9,957 6,452 949.78 9,997 6,552 949.79 10,036 6,652 949.80 10,075 6,753 Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20"edrn - snow Printed 8/15/2022Prepared by {enter your company name here} Page 12HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Link 1L: Lotus Lake Inflow Area = 1.178 ac, 93.46% Impervious, Inflow Depth = 7.20" for 10 day-100 Yr Snow event Inflow = 0.23 cfs @ 121.21 hrs, Volume= 0.707 af Primary = 0.23 cfs @ 121.21 hrs, Volume= 0.707 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Link 1L: Lotus Lake Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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 Inflow Area=1.178 ac 0.23 cfs0.23 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20"edrn - snow Printed 8/15/2022Prepared by {enter your company name here} Page 13HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Link 3L: NorthWest Discharge Inflow Area = 1.721 ac, 89.60% Impervious, Inflow Depth = 7.17" for 10 day-100 Yr Snow event Inflow = 0.33 cfs @ 121.21 hrs, Volume= 1.028 af Primary = 0.33 cfs @ 121.21 hrs, Volume= 1.028 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Link 3L: NorthWest Discharge Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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 Inflow Area=1.721 ac 0.33 cfs0.33 cfs Table of Contentsedrn - snow Printed 8/15/2022Prepared by {enter your company name here} HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC TABLE OF CONTENTS Project Reports 1 Routing Diagram 2 Area Listing (all nodes) 3 Soil Listing (all nodes) Current Event 4 Subcat E-1: Discharge to Northwest 5 Subcat E-2: Discharge to Wetland 6 Subcat E-3: Existing Home and discharge to Lotus lake 7 Subcat OFF-1: Offsite Discharge to Wetland 8 Pond 2P: Wetland 1 12 Link 1L: Lotus Lake 13 Link 3L: NorthWest Discharge E-1 Discharge to Northwest E-2 Discharge to Wetland OFF-1 Offsite Discharge to Wetland S-3 Lot 2 S-4 (new Subcat) S-5 (new Subcat) S-6 (new Subcat) 2P Wetland 1 4P Infiltration Block 1 Lot 2 5P Block 2 Lot 3 Infiltration Basin 6PCB OCS 502 8P Lot 1 Block 1 Infiltration 1L Lotus Lake 3L NorthWest Discharge Routing Diagram for pdrn - snow Prepared by {enter your company name here}, Printed 10/21/2022 HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Subcat Reach Pond Link pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 2HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Rainfall Events Listing (selected events) Event# Event Name Storm Type Curve Mode Duration (hours) B/B Depth (inches) AMC 1 10 day-100 Yr Snow Snowmelt_10d_100yr Default 240.00 1 7.20 4 pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 3HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Area Listing (selected nodes) Area (acres) CN Description (subcatchment-numbers) 0.731 84 >75% Grass cover, Good, HSG D (S-3, S-4, S-5) 0.329 98 Roofs, HSG D (S-3, S-4, S-5) 0.124 98 Water Surface, 0% imp, HSG D (E-2) 0.912 79 Woods, Fair, HSG D (E-1, OFF-1) 0.877 77 Woods, Good, HSG D (E-2, S-4, S-5, S-6) 2.973 83 TOTAL AREA pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 4HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Soil Listing (selected nodes) Area (acres) Soil Group Subcatchment Numbers 0.000 HSG A 0.000 HSG B 0.000 HSG C 2.973 HSG D E-1, E-2, OFF-1, S-3, S-4, S-5, S-6 0.000 Other 2.973 TOTAL AREA Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 5HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Time span=0.00-400.00 hrs, dt=0.01 hrs, 40001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Runoff Area=0.315 ac 0.00% Impervious Runoff Depth=6.96"Subcatchment E-1: Discharge to Northwest Flow Length=176' Slope=0.0842 '/' Tc=2.8 min AMC Adjusted CN=98 Runoff=0.06 cfs 0.183 af Runoff Area=0.598 ac 0.00% Impervious Runoff Depth=6.96"Subcatchment E-2: Discharge to Wetland Flow Length=125' Slope=0.1606 '/' Tc=1.5 min AMC Adjusted CN=WQ Runoff=0.11 cfs 0.347 af Runoff Area=0.597 ac 0.00% Impervious Runoff Depth=6.96"Subcatchment OFF-1: Offsite Discharge to Flow Length=104' Slope=0.0481 '/' Tc=2.4 min AMC Adjusted CN=98 Runoff=0.11 cfs 0.346 af Runoff Area=0.270 ac 38.52% Impervious Runoff Depth=6.96"Subcatchment S-3: Lot 2 Tc=10.0 min AMC Adjusted CN=WQ Runoff=0.05 cfs 0.157 af Runoff Area=0.601 ac 15.47% Impervious Runoff Depth=6.96"Subcatchment S-4: (new Subcat) Tc=5.0 min AMC Adjusted CN=WQ Runoff=0.11 cfs 0.349 af Runoff Area=0.531 ac 24.86% Impervious Runoff Depth=6.96"Subcatchment S-5: (new Subcat) Tc=5.0 min AMC Adjusted CN=WQ Runoff=0.10 cfs 0.308 af Runoff Area=0.061 ac 0.00% Impervious Runoff Depth=6.96"Subcatchment S-6: (new Subcat) Tc=3.0 min AMC Adjusted CN=98 Runoff=0.01 cfs 0.035 af Peak Elev=949.52' Storage=3,157 cf Inflow=0.28 cfs 0.840 afPond 2P: Wetland 1 Outflow=0.27 cfs 0.781 af Peak Elev=943.04' Storage=523 cf Inflow=0.11 cfs 0.349 afPond 4P: Infiltration Block 1 Lot 2 Outflow=0.11 cfs 0.340 af Peak Elev=954.75' Storage=496 cf Inflow=0.05 cfs 0.157 afPond 5P: Block 2 Lot 3 Infiltration Basin Outflow=0.05 cfs 0.147 af Peak Elev=907.70' Inflow=0.21 cfs 0.636 afPond 6P: OCS 502 Outflow=0.21 cfs 0.636 af Peak Elev=909.83' Storage=645 cf Inflow=0.10 cfs 0.308 afPond 8P: Lot 1 Block 1 Infiltration Primary=0.10 cfs 0.296 af Secondary=0.00 cfs 0.000 af Tertiary=0.00 cfs 0.000 af Outflow=0.10 cfs 0.296 af Inflow=0.23 cfs 0.671 afLink 1L: Lotus Lake Primary=0.23 cfs 0.671 af Inflow=0.33 cfs 0.963 afLink 3L: NorthWest Discharge Primary=0.33 cfs 0.963 af Total Runoff Area = 2.973 ac Runoff Volume = 1.725 af Average Runoff Depth = 6.96" 88.93% Pervious = 2.644 ac 11.07% Impervious = 0.329 ac Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 6HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment E-1: Discharge to Northwest Runoff = 0.06 cfs @ 121.22 hrs, Volume= 0.183 af, Depth= 6.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4 Area (ac) CN Adj Description 0.315 79 98 Woods, Fair, HSG D 0.315 Weighted Average 0.315 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.8 176 0.0842 1.04 Lag/CN Method, Subcatchment E-1: Discharge to Northwest Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)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 10 day-100 Yr Snow Rainfall=7.20" AMC=4 Runoff Area=0.315 ac Runoff Volume=0.183 af Runoff Depth=6.96" Flow Length=176' Slope=0.0842 '/' Tc=2.8 min AMC Adjusted CN=98 0.06 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 7HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment E-2: Discharge to Wetland Runoff = 0.11 cfs @ 121.20 hrs, Volume= 0.347 af, Depth= 6.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4 Area (ac) CN Adj Description 0.474 77 98 Woods, Good, HSG D 0.124 98 98 Water Surface, 0% imp, HSG D 0.598 Weighted Average 0.598 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.5 125 0.1606 1.43 Lag/CN Method, Subcatchment E-2: Discharge to Wetland Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)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 Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20" AMC=4 Runoff Area=0.598 ac Runoff Volume=0.347 af Runoff Depth=6.96" Flow Length=125' Slope=0.1606 '/' Tc=1.5 min AMC Adjusted CN=WQ 0.11 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 8HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment OFF-1: Offsite Discharge to Wetland Runoff = 0.11 cfs @ 121.21 hrs, Volume= 0.346 af, Depth= 6.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4 Area (ac) CN Adj Description 0.597 79 98 Woods, Fair, HSG D 0.597 Weighted Average 0.597 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.4 104 0.0481 0.71 Lag/CN Method, Subcatchment OFF-1: Offsite Discharge to Wetland Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)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 Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20" AMC=4 Runoff Area=0.597 ac Runoff Volume=0.346 af Runoff Depth=6.96" Flow Length=104' Slope=0.0481 '/' Tc=2.4 min AMC Adjusted CN=98 0.11 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 9HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment S-3: Lot 2 Runoff = 0.05 cfs @ 121.30 hrs, Volume= 0.157 af, Depth= 6.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4 Area (ac) CN Adj Description 0.104 98 98 Roofs, HSG D * 0.166 84 98 >75% Grass cover, Good, HSG D 0.270 Weighted Average 0.166 61.48% Pervious Area 0.104 38.52% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment S-3: Lot 2 Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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 10 day-100 Yr Snow Rainfall=7.20" AMC=4 Runoff Area=0.270 ac Runoff Volume=0.157 af Runoff Depth=6.96" Tc=10.0 min AMC Adjusted CN=WQ 0.05 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 10HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment S-4: (new Subcat) Runoff = 0.11 cfs @ 121.24 hrs, Volume= 0.349 af, Depth= 6.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4 Area (ac) CN Adj Description 0.093 98 98 Roofs, HSG D * 0.270 84 98 >75% Grass cover, Good, HSG D 0.238 77 98 Woods, Good, HSG D 0.601 Weighted Average 0.508 84.53% Pervious Area 0.093 15.47% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment S-4: (new Subcat) Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)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 Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20" AMC=4 Runoff Area=0.601 ac Runoff Volume=0.349 af Runoff Depth=6.96" Tc=5.0 min AMC Adjusted CN=WQ 0.11 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 11HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment S-5: (new Subcat) Runoff = 0.10 cfs @ 121.24 hrs, Volume= 0.308 af, Depth= 6.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4 Area (ac) CN Adj Description 0.132 98 98 Roofs, HSG D * 0.295 84 98 >75% Grass cover, Good, HSG D 0.104 77 98 Woods, Good, HSG D 0.531 Weighted Average 0.399 75.14% Pervious Area 0.132 24.86% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment S-5: (new Subcat) Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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 10 day-100 Yr Snow Rainfall=7.20" AMC=4 Runoff Area=0.531 ac Runoff Volume=0.308 af Runoff Depth=6.96" Tc=5.0 min AMC Adjusted CN=WQ 0.10 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 12HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment S-6: (new Subcat) Runoff = 0.01 cfs @ 121.22 hrs, Volume= 0.035 af, Depth= 6.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4 Area (ac) CN Adj Description 0.061 77 98 Woods, Good, HSG D 0.061 Weighted Average 0.061 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.0 Direct Entry, Subcatchment S-6: (new Subcat) Runoff Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)0.013 0.013 0.012 0.011 0.011 0.01 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 Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20" AMC=4 Runoff Area=0.061 ac Runoff Volume=0.035 af Runoff Depth=6.96" Tc=3.0 min AMC Adjusted CN=98 0.01 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 13HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2P: Wetland 1 Inflow Area = 1.465 ac, 7.10% Impervious, Inflow Depth = 6.88" for 10 day-100 Yr Snow event Inflow = 0.28 cfs @ 121.21 hrs, Volume= 0.840 af Outflow = 0.27 cfs @ 121.39 hrs, Volume= 0.781 af, Atten= 2%, Lag= 10.6 min Secondary = 0.27 cfs @ 121.39 hrs, Volume= 0.781 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 949.52' @ 121.39 hrs Surf.Area= 8,106 sf Storage= 3,157 cf Plug-Flow detention time= 946.8 min calculated for 0.781 af (93% of inflow) Center-of-Mass det. time= 490.7 min ( 7,947.2 - 7,456.5 ) Volume Invert Avail.Storage Storage Description #1 949.00' 7,385 cf Wetland (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 949.00 3,352 0 0 949.40 7,681 2,207 2,207 949.60 8,387 1,607 3,813 949.80 8,933 1,732 5,545 950.00 9,460 1,839 7,385 Device Routing Invert Outlet Devices #1 Secondary 949.45'4.5' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Secondary OutFlow Max=0.27 cfs @ 121.39 hrs HW=949.52' TW=0.00' (Dynamic Tailwater) 1=Sharp-Crested Rectangular Weir (Weir Controls 0.27 cfs @ 0.87 fps) Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 14HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Pond 2P: Wetland 1 Inflow Secondary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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=1.465 ac Peak Elev=949.52' Storage=3,157 cf 0.28 cfs0.27 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 15HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Pond 4P: Infiltration Block 1 Lot 2 Inflow Area = 0.601 ac, 15.47% Impervious, Inflow Depth = 6.96" for 10 day-100 Yr Snow event Inflow = 0.11 cfs @ 121.24 hrs, Volume= 0.349 af Outflow = 0.11 cfs @ 121.35 hrs, Volume= 0.340 af, Atten= 1%, Lag= 6.4 min Primary = 0.11 cfs @ 121.35 hrs, Volume= 0.340 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 943.04' @ 121.35 hrs Surf.Area= 941 sf Storage= 523 cf Plug-Flow detention time= 375.4 min calculated for 0.340 af (98% of inflow) Center-of-Mass det. time= 207.3 min ( 7,588.3 - 7,381.0 ) Volume Invert Avail.Storage Storage Description #1A 941.94' 1,163 cf 13.25'W x 71.00'L x 5.50'H Field A 5,174 cf Overall - 2,266 cf Embedded = 2,908 cf x 40.0% Voids #2A 942.44' 2,266 cf CMP Round 54 x 6 Inside #1 Effective Size= 54.0"W x 54.0"H => 15.90 sf x 20.00'L = 318.1 cf Overall Size= 54.0"W x 54.0"H x 20.00'L 6 Chambers in 2 Rows 11.25' Header x 15.90 sf x 2 = 357.8 cf Inside 3,429 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 928.46'12.0" Round Culvert L= 135.8' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 928.46' / 912.00' S= 0.1212 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 0.79 sf #2 Device 1 935.82'12.0" Round Culvert L= 60.5' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 935.82' / 933.41' S= 0.0398 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 0.79 sf #3 Device 2 942.80'4.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Device 2 944.97'12.0" W x 5.1" H Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Device 2 947.06'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Primary OutFlow Max=0.11 cfs @ 121.35 hrs HW=943.04' TW=907.70' (Dynamic Tailwater) 1=Culvert (Passes 0.11 cfs of 14.78 cfs potential flow) 2=Culvert (Passes 0.11 cfs of 10.52 cfs potential flow) 3=Orifice/Grate (Orifice Controls 0.11 cfs @ 1.68 fps) 4=Orifice/Grate ( Controls 0.00 cfs) 5=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 16HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Pond 4P: Infiltration Block 1 Lot 2 Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (cfs)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 Inflow Area=0.601 ac Peak Elev=943.04' Storage=523 cf 0.11 cfs0.11 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 17HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Pond 5P: Block 2 Lot 3 Infiltration Basin Inflow Area = 0.270 ac, 38.52% Impervious, Inflow Depth = 6.96" for 10 day-100 Yr Snow event Inflow = 0.05 cfs @ 121.30 hrs, Volume= 0.157 af Outflow = 0.05 cfs @ 121.42 hrs, Volume= 0.147 af, Atten= 1%, Lag= 7.5 min Primary = 0.05 cfs @ 121.42 hrs, Volume= 0.147 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 954.75' @ 121.42 hrs Surf.Area= 742 sf Storage= 496 cf Plug-Flow detention time= 840.4 min calculated for 0.147 af (94% of inflow) Center-of-Mass det. time= 440.1 min ( 7,825.7 - 7,385.6 ) Volume Invert Avail.Storage Storage Description #1A 953.50' 806 cf 10.75'W x 69.00'L x 4.50'H Field A 3,338 cf Overall - 1,323 cf Embedded = 2,015 cf x 40.0% Voids #2A 954.00' 1,323 cf CMP Round 42 x 6 Inside #1 Effective Size= 42.0"W x 42.0"H => 9.62 sf x 20.00'L = 192.4 cf Overall Size= 42.0"W x 42.0"H x 20.00'L 6 Chambers in 2 Rows 8.75' Header x 9.62 sf x 2 = 168.4 cf Inside 2,129 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 954.48'12.0" Round Culvert L= 15.2' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 954.48' / 954.39' S= 0.0059 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 0.79 sf #2 Device 1 954.60'4.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Device 1 957.89'5.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Primary OutFlow Max=0.05 cfs @ 121.42 hrs HW=954.75' TW=949.52' (Dynamic Tailwater) 1=Culvert (Passes 0.05 cfs of 0.23 cfs potential flow) 2=Orifice/Grate (Orifice Controls 0.05 cfs @ 1.32 fps) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 18HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Pond 5P: Block 2 Lot 3 Infiltration Basin Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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=0.270 ac Peak Elev=954.75' Storage=496 cf 0.05 cfs0.05 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 19HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Pond 6P: OCS 502 Inflow Area = 1.132 ac, 19.88% Impervious, Inflow Depth = 6.74" for 10 day-100 Yr Snow event Inflow = 0.21 cfs @ 121.34 hrs, Volume= 0.636 af Outflow = 0.21 cfs @ 121.34 hrs, Volume= 0.636 af, Atten= 0%, Lag= 0.0 min Primary = 0.21 cfs @ 121.34 hrs, Volume= 0.636 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 907.70' @ 121.34 hrs Flood Elev= 912.00' Device Routing Invert Outlet Devices #1 Primary 896.46'15.0" Round Culvert L= 34.4' RCP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 896.46' / 896.35' S= 0.0032 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf #2 Device 1 907.51'15.0" Round Culvert L= 33.0' RCP, groove end projecting, Ke= 0.200 Inlet / Outlet Invert= 907.51' / 906.00' S= 0.0458 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 1.23 sf Primary OutFlow Max=0.21 cfs @ 121.34 hrs HW=907.70' TW=0.00' (Dynamic Tailwater) 1=Culvert (Passes 0.21 cfs of 19.25 cfs potential flow) 2=Culvert (Inlet Controls 0.21 cfs @ 1.85 fps) Pond 6P: OCS 502 Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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=1.132 ac Peak Elev=907.70' 0.21 cfs0.21 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 20HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Pond 8P: Lot 1 Block 1 Infiltration Inflow Area = 0.531 ac, 24.86% Impervious, Inflow Depth = 6.96" for 10 day-100 Yr Snow event Inflow = 0.10 cfs @ 121.24 hrs, Volume= 0.308 af Outflow = 0.10 cfs @ 121.33 hrs, Volume= 0.296 af, Atten= 1%, Lag= 4.9 min Primary = 0.10 cfs @ 121.33 hrs, Volume= 0.296 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Tertiary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Peak Elev= 909.83' @ 121.33 hrs Surf.Area= 592 sf Storage= 645 cf Plug-Flow detention time= 567.8 min calculated for 0.296 af (96% of inflow) Center-of-Mass det. time= 296.2 min ( 7,677.2 - 7,381.0 ) Volume Invert Avail.Storage Storage Description #1A 908.00' 735 cf 6.50'W x 91.00'L x 5.50'H Field A 3,253 cf Overall - 1,415 cf Embedded = 1,838 cf x 40.0% Voids #2A 908.50' 1,415 cf CMP Round 54 x 4 Inside #1 Effective Size= 54.0"W x 54.0"H => 15.90 sf x 20.00'L = 318.1 cf Overall Size= 54.0"W x 54.0"H x 20.00'L 4.50' Header x 15.90 sf x 2 = 143.1 cf Inside 2,151 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 909.61'4.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #2 Secondary 910.70'12.0" W x 5.4" H Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Tertiary 913.47'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Primary OutFlow Max=0.10 cfs @ 121.33 hrs HW=909.83' TW=907.70' (Dynamic Tailwater) 1=Orifice/Grate (Orifice Controls 0.10 cfs @ 1.61 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=908.00' TW=896.46' (Dynamic Tailwater) 2=Orifice/Grate ( Controls 0.00 cfs) Tertiary OutFlow Max=0.00 cfs @ 0.00 hrs HW=908.00' TW=896.46' (Dynamic Tailwater) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 21HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Pond 8P: Lot 1 Block 1 Infiltration Inflow Outflow Primary Secondary Tertiary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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=0.531 ac Peak Elev=909.83' Storage=645 cf 0.10 cfs0.10 cfs0.10 cfs 0.00 cfs0.00 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 22HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Link 1L: Lotus Lake Inflow Area = 1.193 ac, 18.86% Impervious, Inflow Depth = 6.75" for 10 day-100 Yr Snow event Inflow = 0.23 cfs @ 121.32 hrs, Volume= 0.671 af Primary = 0.23 cfs @ 121.32 hrs, Volume= 0.671 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Link 1L: Lotus Lake Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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 Inflow Area=1.193 ac 0.23 cfs0.23 cfs Snowmelt_10d_100yr 10 day-100 Yr Snow Rainfall=7.20", AMC=4pdrn - snow Printed 10/21/2022Prepared by {enter your company name here} Page 23HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC Summary for Link 3L: NorthWest Discharge Inflow Area = 1.780 ac, 5.84% Impervious, Inflow Depth = 6.49" for 10 day-100 Yr Snow event Inflow = 0.33 cfs @ 121.29 hrs, Volume= 0.963 af Primary = 0.33 cfs @ 121.29 hrs, Volume= 0.963 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-400.00 hrs, dt= 0.01 hrs Link 3L: NorthWest Discharge Inflow Primary Hydrograph Time (hours) 400380360340320300280260240220200180160140120100806040200Flow (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 Inflow Area=1.780 ac 0.33 cfs0.33 cfs Table of Contentspdrn - snow Printed 10/21/2022Prepared by {enter your company name here} HydroCAD® 10.10-5a s/n 01427 © 2020 HydroCAD Software Solutions LLC TABLE OF CONTENTS Project Reports 1 Routing Diagram 2 Rainfall Events Listing (selected events) 3 Area Listing (selected nodes) 4 Soil Listing (selected nodes) 10 day-100 Yr Snow Event 5 Node Listing 6 Subcat E-1: Discharge to Northwest 7 Subcat E-2: Discharge to Wetland 8 Subcat OFF-1: Offsite Discharge to Wetland 9 Subcat S-3: Lot 2 10 Subcat S-4: (new Subcat) 11 Subcat S-5: (new Subcat) 12 Subcat S-6: (new Subcat) 13 Pond 2P: Wetland 1 15 Pond 4P: Infiltration Block 1 Lot 2 17 Pond 5P: Block 2 Lot 3 Infiltration Basin 19 Pond 6P: OCS 502 20 Pond 8P: Lot 1 Block 1 Infiltration 22 Link 1L: Lotus Lake 23 Link 3L: NorthWest Discharge Project Information Calculator Version:Version 3: January 2017 Project Name:Fox Hill Drive Existing User Name / Company Name:Alliant Engineering Date: Project Description:4 home subdivision in Chanhassen, MN 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 2.101 2.101 Managed Turf -disturbed, graded for yards or other turf to be mowed/managed 0 Impervious Area (acres)0.076 Total Area (acres)2.177 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 0 Managed Turf -disturbed, graded for yards or other turf to be mowed/managed 0 Impervious Area (acres) Total Area (acres)0 Summary Information Performance Goal Requirement Performance goal volume retention requirement:303 ft3 Volume removed by BMPs towards performance goal:ft3 Percent volume removed towards performance goal % Annual Volume and Pollutant Load Reductions Post development annual runoff volume 0.3975 acre-ft Annual runoff volume removed by BMPs:acre-ft Percent annual runoff volume removed:% Post development annual particulate P load:0.178 lbs Annual particulate P removed by BMPs:lbs Post development annual dissolved P load:0.146 lbs Annual dissolved P removed by BMPs:lbs Percent annual total phosphorus removed:% Post development annual TSS load:58.9 lbs Annual TSS removed by BMPs:lbs Percent annual TSS removed:% BMP Summary Performance Goal Summary BMP Name BMP Volume Capacity (ft3) Volume Recieved (ft3) Volume Retained (ft3) Volume Outflow (ft3) Percent Retained (%) 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 (%) Particulate Phosphorus Summary BMP Name Load From Direct Watershed (lbs) Load From Upstream BMPs (lbs) Load Retained (lbs) Outflow Load (lbs) Percent Retained (%) Dissolved Phosphorus Summary BMP Name Load From Direct Watershed (lbs) Load From Upstream BMPs (lbs) Load Retained (lbs) Outflow Load (lbs) Percent Retained (%) TSS Summary BMP Name Load From Direct Watershed (lbs) Load From Upstream BMPs (lbs) Load Retained (lbs) Outflow Load (lbs) Percent Retained (%) BMP Schematic Project Information Calculator Version:Version 3: January 2017 Project Name:Fox Hill Drive Proposed User Name / Company Name:Alliant Engineering Date: 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 1.912 1.912 Managed Turf -disturbed, graded for yards or other turf to be mowed/managed 0.732 0.732 Impervious Area (acres)0.329 Total Area (acres)2.973 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 0.342 0.342 Managed Turf -disturbed, graded for yards or other turf to be mowed/managed 0.731 0.731 Impervious Area (acres)0.329 Total Area (acres)1.402 Summary Information Performance Goal Requirement Performance goal volume retention requirement:1314 ft3 Volume removed by BMPs towards performance goal:1314 ft3 Percent volume removed towards performance goal 100 % Annual Volume and Pollutant Load Reductions Post development annual runoff volume 1.3257 acre-ft Annual runoff volume removed by BMPs:1.0389 acre-ft Percent annual runoff volume removed:78 % Post development annual particulate P load:0.595 lbs Annual particulate P removed by BMPs:0.466 lbs Post development annual dissolved P load:0.487 lbs Annual dissolved P removed by BMPs:0.382 lbs Percent annual total phosphorus removed:78 % Post development annual TSS load:196.5 lbs Annual TSS removed by BMPs:154 lbs Percent annual TSS removed:78 % BMP Summary Performance Goal Summary BMP Name BMP Volume Capacity (ft3) Volume Recieved (ft3) Volume Retained (ft3) Volume Outflow (ft3) Percent Retained (%) Lot 2 Block 1 945 371 371 0 100 Lot 1 Block 1 544 527 527 0 100 Lot 3 417 415 415 0 100 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 (%) Lot 2 Block 1 0.3762 0 0.3561 0.0201 95 Lot 1 Block 1 0.4583 0 0.3974 0.0609 87 Lot 3 0.3146 0 0.2854 0.0292 91 Particulate Phosphorus Summary BMP Name Load From Direct Watershed (lbs) Load From Upstream BMPs (lbs) Load Retained (lbs) Outflow Load (lbs) Percent Retained (%) Lot 2 Block 1 0.1688 0 0.1598 0.009 95 Lot 1 Block 1 0.2057 0 0.1784 0.0273 87 Lot 3 0.1412 0 0.1281 0.0131 91 Dissolved Phosphorus Summary BMP Name Load From Direct Watershed (lbs) Load From Upstream BMPs (lbs) Load Retained (lbs) Outflow Load (lbs) Percent Retained (%) Lot 2 Block 1 0.1381 0 0.1307 0.0074 95 Lot 1 Block 1 0.1683 0 0.146 0.0223 87 Lot 3 0.1155 0 0.1048 0.0107 91 TSS Summary BMP Name Load From Direct Watershed (lbs) Load From Upstream BMPs (lbs) Load Retained (lbs) Outflow Load (lbs) Percent Retained (%) Lot 2 Block 1 55.76 0 52.78 2.98 95 Lot 1 Block 1 67.93 0 58.91 9.02000000000001 87 Lot 3 46.64 0 42.31 4.33 91 BMP Schematic LOT 1LOT 1LOT 2LOT 3BLOCK 2BLOCK 1OUTLOT AS20°28'26"E 125.32N22°37'50"W 125.86N74°50'50"E 825.86N74°50'50"E 821.1032+/-41+/-FOX HILL-FOX HILL DRIVE CHANHASSEN MN 55317CHANHASSEN, MN DRAFTSubject to RevisionSandy Lean Clay with Grass and Roots, black, moist (Topsoil) (CL) Sandy Lean Clay, moist to wet, stiff, grey (Glacial Till) (SC-SM) Silty Clayey Sand, brown, moist, loose (Glacial Till) Sand Seam at about 5 feet (CL) Lean Clay to Sandy Lean Clay, trace Gravel, greyish brown, moist to wet, rather stiff to stiff (Glacial Till) Sand Seam at about 7.5 feet (CL) Sandy Lean Clay, trace Gravel, grey, moist to wet, very stiff (Glacial Till) Bottom of borehole at 21.0 feet. AU 1 SS 2 SS 3 SS 4 SS 5 SS 6 SS 7 SS 8 61 72 67 56 83 78 78 3-6-7 (13) 4-6-4 (10) 2-3-5 (8) 2-3-6 (9) 2-5-8 (13) 4-10-7 (17) 3-8-9 (17) NOTES GROUND ELEVATION LOGGED BY NC DRILLING METHOD Hollow Stem Auger/Split Spoon DRILLING CONTRACTOR HGTS - 45 GROUND WATER LEVELS: CHECKED BY PG DATE STARTED 8/4/22 COMPLETED 8/4/22 AT TIME OF DRILLING --- Not Encountered AT END OF DRILLING --- Not Encountered AFTER DRILLING --- Not Encountered HOLE SIZE 3 1/4 inches FINES CONTENT (%) 20 40 60 80 20 40 60 80 PL LLMC DEPTH(ft)0 5 10 15 20 GRAPHICLOGMATERIAL DESCRIPTION SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE) SPT N VALUE 20 40 60 80 MOISTURE CONT.(%)NOTESPAGE 1 OF 1 BORING NUMBER SB-1 CLIENT Denali Custom Homes PROJECT NUMBER 22-0686 PROJECT NAME Fox Hill PROJECT LOCATION Chanhassen, MN GEOTECH BH PLOTS - GINT STD US LAB.GDT - 8/4/22 15:36 - C:\USERS\HGTS 3\DROPBOX (HGTS)\HAUGO GEOTECHNICAL SERVICES\2022\22-0686 FOX HILL\22-0686 BORING LOG DRAFT.GPJHaugo GeoTechnical Services 2825 Cedar Ave South Minneapolis, MN 55407 Telephone: 612-729-2959 Fax: 763-445-2238 DRAFTSubject to RevisionLean Clay, trace Roots, black, moist (Topsoil) (CL) Sandy Lean Clay with Pieces of Limestone, brown, moist to wet, very stiff (Glacial Till) (SP-SM) Poorly Graded Sand with Silt, fine grained, brown, moist, medium dense (Glacial Till) (CL) Sandy Lean Clay, trace Gravel, brown, moist to wet, rather stiff to stiff (Glacial Till) (CL) Sandy Lean Clay with Pieces of Limestone, brown, moist to wet, very stiff (Glacial Till) Bottom of borehole at 21.0 feet. AU 9 SS 10 SS 11 SS 12 SS 13 SS 14 SS 15 SS 16 72 83 0 50 61 50 56 7-11-10 (21) 4-9-12 (21) 7-19-16 (35) 4-6-5 (11) 2-4-5 (9) 3-6-7 (13) 17-18-11 (29) NOTES GROUND ELEVATION LOGGED BY NC DRILLING METHOD Hollow Stem Auger/Split Spoon DRILLING CONTRACTOR HGTS - 45 GROUND WATER LEVELS: CHECKED BY PG DATE STARTED 8/4/22 COMPLETED 8/4/22 AT TIME OF DRILLING --- Not Encountered AT END OF DRILLING --- Not Encountered AFTER DRILLING --- Not Encountered HOLE SIZE 3 1/4 inches FINES CONTENT (%) 20 40 60 80 20 40 60 80 PL LLMC DEPTH(ft)0 5 10 15 20 GRAPHICLOGMATERIAL DESCRIPTION SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE) SPT N VALUE 20 40 60 80 MOISTURE CONT.(%)NOTESPAGE 1 OF 1 BORING NUMBER SB-2 CLIENT Denali Custom Homes PROJECT NUMBER 22-0686 PROJECT NAME Fox Hill PROJECT LOCATION Chanhassen, MN GEOTECH BH PLOTS - GINT STD US LAB.GDT - 8/4/22 15:36 - C:\USERS\HGTS 3\DROPBOX (HGTS)\HAUGO GEOTECHNICAL SERVICES\2022\22-0686 FOX HILL\22-0686 BORING LOG DRAFT.GPJHaugo GeoTechnical Services 2825 Cedar Ave South Minneapolis, MN 55407 Telephone: 612-729-2959 Fax: 763-445-2238 DRAFTSubject to RevisionSilty Clayey Sand, trace Roots, black, moist (Topsoil) (SC-SM) Silty Clayey Sand with Gravel, fine to coarse grained, brown to dark brown, moist, medium dense (Glacial Till) (SM) Silty Sand, fine grained, trace Gravel, brown, moist, loose to medium dense (Glacial Till) (CL) Sandy Lean Clay, trace Gravel, brown, wet, rather stiff to stiff (Glacial Till) (SM) Silty Sand, fine grained, brown, moist, loose (Glacial Till) Bottom of borehole at 21.0 feet. AU 17 SS 18 SS 19 SS 20 SS 21 SS 22 SS 23 SS 24 0 72 67 44 83 94 83 6-9-11 (20) 2-5-7 (12) 3-5-6 (11) 3-5-5 (10) 1-4-5 (9) 3-6-7 (13) 2-3-4 (7) NOTES GROUND ELEVATION LOGGED BY NC DRILLING METHOD Hollow Stem Auger/Split Spoon DRILLING CONTRACTOR HGTS - 45 GROUND WATER LEVELS: CHECKED BY PG DATE STARTED 8/4/22 COMPLETED 8/4/22 AT TIME OF DRILLING --- Not Encountered AT END OF DRILLING --- Not Encountered AFTER DRILLING --- Not Encountered HOLE SIZE 3 1/4 inches FINES CONTENT (%) 20 40 60 80 20 40 60 80 PL LLMC DEPTH(ft)0 5 10 15 20 GRAPHICLOGMATERIAL DESCRIPTION SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE) SPT N VALUE 20 40 60 80 MOISTURE CONT.(%)NOTESPAGE 1 OF 1 BORING NUMBER SB-3 CLIENT Denali Custom Homes PROJECT NUMBER 22-0686 PROJECT NAME Fox Hill PROJECT LOCATION Chanhassen, MN GEOTECH BH PLOTS - GINT STD US LAB.GDT - 8/4/22 15:36 - C:\USERS\HGTS 3\DROPBOX (HGTS)\HAUGO GEOTECHNICAL SERVICES\2022\22-0686 FOX HILL\22-0686 BORING LOG DRAFT.GPJHaugo GeoTechnical Services 2825 Cedar Ave South Minneapolis, MN 55407 Telephone: 612-729-2959 Fax: 763-445-2238 581 Fox Hill Drive Chanhassen, Carver County, Minnesota Wetland Delineation Report Prepared for Gonyea Homes & Remodeling by Kjolhaug Environmental Services Company, Inc. (KES Project No. 2020-166) November 23, 2020 581 Fox Hill Drive Chanhassen, Carver County, Minnesota Wetland Delineation Report TABLE OF CONTENTS Title Page 1. WETLAND DELINEATION SUMMARY ......................................................................... 1 2. OVERVIEW ........................................................................................................................... 2 3. METHODS ............................................................................................................................. 2 4. RESULTS ............................................................................................................................... 3 4.1 Review of NWI, Soils, Public Waters and NHD Information .......................................... 3 4.2 Wetland Determinations and Delineations........................................................................ 4 4.3 Other Areas ....................................................................................................................... 4 4.4 Request for Wetland Boundary and Jurisdictional Determination ................................... 4 5. CERTIFICATION OF DELINEATION ............................................................................. 6 TABLES Table 1. Soil types mapped on the 581 Fox Hill Drive site ................................................... 3 FIGURES 1. Site Location 2. Existing Conditions 3. National Wetlands Inventory 4. Soil Survey 5. DNR Public Waters Inventory 6. National Hydrography Dataset APPENDICES A. Joint Application Form for Activities Affecting Water Resources in Minnesota B. Wetland Delineation Data Forms C. Precipitation Data 1 581 Fox Hill Drive Chanhassen, Carver County, Minnesota Wetland Delineation Report 1. WETLAND DELINEATION SUMMARY • The 2.39-acre 581 Fox Hill Drive site was inspected on October 14, 2020 for the presence and extent of wetland. • The National Wetlands Inventory (NWI) map showed one L2ABH deep water habitat located within the property boundaries. • The DNR Public Waters Inventory showed Lotus Lake (DNR Public Water 10-6 P) bordered the eastern site boundary. • One Type 1 (PEM1A) seasonally flooded basin wetland was identified and delineated within the property boundary. It was a sparsely vegetative basin and drained to the west during high precipitation events. • The soil survey showed no hydric and partially hydric soil types on the property. • The National Hydrography Dataset showed one water body located within the eastern property boundary. 581 Fox Hill Drive, Chanhassen Wetland Delineation Report 2 2. OVERVIEW The 2.39-acre 581 Fox Hill Drive site was inspected on October 10, 2020 for the presence and extent of wetland. The property was located in the Southeast ¼ of Section 1, Township 116 North, Range 23 West, City Chanhassen, Carver County, Minnesota. The site was situated east of Big Woods Boulevard and south of Fox Hill Drive (Figure 1). The property corresponded to Carver County PID 250010200. The site consisted of residential single-family home lot with a mature canopy of red oak and sugar maple trees. The topography sloped from an elevation of 968 feet msl in the central portion of the to a low of 898 feet msl in the eastern portion of the site. The property was bordered on the west by Big Woods Boulevard, on the east by Lotus Lake (DNR Public Water 10- 6 P), on the south by a single-family home, and on the north by Fox Hill Drive. One wetland was delineated within the site boundaries. The delineated wetland boundaries and existing conditions are shown on Figure 2. Appendix A of this report includes a Joint Application Form for Activities Affecting Water Resources in Minnesota, which is submitted in request for: (1) a wetland boundary and type determination under the Minnesota Wetland Conservation Act (WCA), and (2) delineation concurrence and an Approved Jurisdictional Determination (AJD) under Section 404 of the Federal Clean Water Act. 3. METHODS Wetlands were identified using the Routine Determination method described in the Corps of Engineers Wetlands Delineation Manual (Waterways Experiment Station, 1987) and the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Midwest Region (Version 2.0) as required under Section 404 of the Clean Water Act and the Minnesota Wetland Conservation Act. Wetland boundaries were identified as the upper-most extent of wetland that met criteria for hydric soils, hydrophytic vegetation, and wetland hydrology. Wetland-upland boundaries were marked with pin flags that were located by a Trimble R1 GPS unit. Soils, vegetation, and hydrology were documented at a representative location along the wetland- upland boundary. Plant species dominance was estimated based on the percent aerial or basal coverage visually estimated within a 30-foot radius for trees and vines, a 15-foot radius for the shrub layer, and a 5-foot radius for the herbaceous layer within the community type sampled. Soils were characterized to a minimum depth of 24 inches (unless otherwise noted) using a Munsell Soil Color Book and standard soil texturing methodology. Hydric soil indicators used 581 Fox Hill Drive, Chanhassen Wetland Delineation Report 3 are from Field Indicators of Hydric Soils in the United States (USDA Natural Resources Conservation Service (NRCS) in cooperation with the National Technical Committee for Hydric Soils, Version 8.1, 2017). Mapped soils are separated into five classes based on the composition of hydric components and the Hydric Rating by Map Unit color classes utilized on Web Soil Survey. The five classes include Hydric (100 percent hydric components), Predominantly Hydric (66 to 99 percent hydric components), Partially Hydric (33 to 65 percent hydric components), Predominantly Non-Hydric (1 to 32 percent hydric components), and Non-Hydric (less than one percent hydric components). Plants were identified using standard regional plant keys. Taxonomy and indicator status of plant species was taken from the 2016 National Wetland Plant List (U.S. Army Corps of Engineers 2016. National Wetland Plant List, version 3.3, Engineer Research and Development Center, Cold Regions Research and Engineering Laboratory, Hanover, NH). 4. RESULTS 4.1 Review of NWI, Soils, Public Waters and NHD Information The National Wetlands Inventory (NWI) (Minnesota Geospatial Commons 2009-2014 and U.S. Fish and Wildlife Service) showed one L2ABH deep water habitat located within the property boundaries (Figure 3). The Soil Survey (USDA NRCS 2015) did not show any hydric and partially hydric soil types on the property. Predominantly non-hydric soils included Lester-Kilkenny soils. Soil types mapped on the property are listed in Table 1 and a map showing soil types is included in Figure 4. Table 1. Soil types mapped on the 581 Fox Hill Drive site Symbol Soil Name Acres % of Area % Hydric Hydric Category KC Lester-Kilkenny loams, 6 to 12 percent slopes 2.3 74.7% 0 Non-hydric KD Lester-Kilkenny loams, 12 to 18 percent slopes 0.6 19.0% 0 Non-hydric KF Lester-Kilkenny complex, 22 to 40 percent slopes 0.1 4.6% 0 Non-hydric W Water 0.0 1.6% 0 Non-hydric The Minnesota DNR Public Waters Inventory (Minnesota Department of Natural Resources 2015) showed that the eastern site boundary bordered Lotus Lake (DNR Public Water 10-6 P) (Figure 5). The National Hydrography Dataset (U.S. Geological Survey 2015) showed that the property bordered Lotus Lake to the east (Figure 6). 581 Fox Hill Drive, Chanhassen Wetland Delineation Report 4 4.2 Wetland Determinations and Delineations Potential wetlands were evaluated during field observations on October 14, 2020. One wetland was identified and delineated on the property (Figure 2). Corresponding data forms are included in Appendix B. The following description of the wetlands and adjacent uplands reflects conditions observed at the time of the field visit. Herbaceous vegetation was actively senescing at the time of the wetland delineation. Precipitation conditions were within the normal range based on available 30-day rolling total precipitation and three-month antecedent precipitation data (Appendix C). Wetland 1 was a Type 1 (PEM1A) seasonally flooded basin wetland located in western portion of the property. The wetland consisted of a sparsely vegetated basin situated in a mature oak and maple forest with little to no understory vegetation. Saturation at the soil surface was observed throughout the wetland. This wetland covered 0.11 acre within the property boundaries. Adjacent upland consisted of mature forest dominated by red oak and sugar maple trees. Primary and secondary hydrology indicators were not observed on the upland. The wetland boundary corresponded to a topographic rise that coincided with a transition from saturated soil to dry soils associated with red oak and sugar maple trees. The wetland was not shown on the NWI map and was mapped as fell in an area mapped as non-hydric soil (Lester- Kilkenny loam) on the soil survey. Wetland 1 drained overland to the west. 4.3 Other Areas Other areas were investigated because they were: (1) observed to support a hydrophytic plant community, (2) had visible wetland hydrology indicators, (3) were shown as wetland on the NWI map, or (4) were depressional and mapped as hydric soil. Field investigation led to the conclusion that these areas were not wetland. Sample Point A was adjacent to Lotus Lake located in the eastern portion of the site that was shown as a L2ABH wetland on the NWI map but was mapped as Lester-Kilkenny soils (non- hydric) on the soil survey. This area was dominated by a canopy of sugar maple trees with an understory containing common buckthorn, meadow rue, and tree saplings. Soils in this area were non-hydric and consisted of black sandy clay loam over light olive brown sandy clay loam. High chroma soil color from 8-18 inches indicated the soils were non-hydric and the area lacked primary and secondary indicators of wetland hydrology. No other areas with hydrophytic vegetation or wetland hydrology were observed on the site. No other areas were shown as hydric soil on the soil survey or as wetland on the NWI map. 4.4 Request for Wetland Boundary and Jurisdictional Determination Appendix A of this report includes a Joint Application Form for Activities Affecting Water Resources in Minnesota, which is submitted in request for: (1) a wetland boundary and type 581 Fox Hill Drive, Chanhassen Wetland Delineation Report 5 determination under the Minnesota Wetland Conservation Act (WCA), and (2) delineation concurrence and an Approved Jurisdictional Determination (AJD) under Section 404 of the Federal Clean Water Act. 581 Fox Hill Drive, Chanhassen Wetland Delineation Report 6 5. CERTIFICATION OF DELINEATION The procedures utilized in the described delineation are based on the U.S. Army Corps of Engineers 1987 Wetlands Delineation Manual as required under Section 404 of the Clean Water Act and the Minnesota Wetland Conservation Act. This wetland delineation and report were prepared in compliance with the regulatory standards in place at the time the work was performed. Site boundaries indicated on figures within this report are approximate and do not constitute an official survey product. Delineation completed by: Kyle Uhler, Wetland Monitoring Specialist Minnesota Certified Wetland Delineator No. 1353 Report prepared by: Kyle Uhler, Wetland Monitoring Specialist Minnesota Certified Wetland Delineator No. 1353 Report reviewed by: ____________________________________ Date: November 23, 2020 Mark Kjolhaug, Professional Wetland Scientist No. 000845 581 Fox Hill Drive Wetland Delineation Report FIGURES 1. Site Location 2. Existing Conditions 3. National Wetlands Inventory 4. Soil Survey 5. DNR Protected Waters Inventory 6. National Hydrography Dataset © OpenStreetMap (and) contributors, CC-BY-SA Figure 1 - Site Location Map 581 Fox Hill Drive (KES 2020-166)Chanhassen, Minnesota Note: Boundaries indicatedon this figure are approximate and do not constitute an official survey product. ¯0 500 Feet Proje ct Bou ndary Source: ESRI Streets Basemap !( !(!(9249269229 2 0 9 1 89289089 1 69109 1 2 9 1 49309329 46944940942938 9349 3 6 906948950 9049529029 0 0 8 9 8 9 5 4 896958 956 9 6 0 9 6 2 964 966 968 970 972 974976 956 954 948 956956974 Figure 2 - Existing Conditions (2016 Twin City Metro Image) 581 Fox Hill Drive SiteChanhassen, Minnesota Note: Boundaries indicatedon this figure are approximate and do not constitute an official survey product. ¯0 100 Feet Proje ct Bou ndary !(Sample Point GPS We tla nd Bound ary Off-site Wetland Boundary OHWL Carver County Lidar Source: MNGEO Spatial Commons SP1-W SP-A OHWLMNDNR Lotus (10-6 P)896.3 ft MSLDatum : NGVD 29 (ft) Wetland 10.11 acre onsite SP1-U L1UBH L2UBHPUBGx PABG PFO1A PFO1A Figure 3 - National Wetlands Inventory 581 Fox Hill Drive (KES 2020-166)Chanhassen, Minnesota Note: Boundaries indicatedon this figure are approximate and do not constitute an official survey product. ¯0 165 Feet Proje ct Bou ndary L1UBH L2UBH PABG PFO1A PUBGx Source: MNGEO Spatial Commons, USFWS KC W KD HM PM KF EX Figure 4 - Soil Survey 581 Fox Hill Drive (KES 2020-166)Chanhassen, Minnesota Note: Boundaries indicatedon this figure are approximate and do not constitute an official survey product. ¯0 165 Feet Proje ct Bou ndary Hydric/Predominantly H ydric Partially Hydric Predo min antly Non-Hydric/Non-Hydric Source: MNGEO Spatial Commons, USDA, NRCS *Se e narrative for soil descriptions Lotus (10-6 P) Figure 5 - DNR Public Waters Inventory 581 Fox Hill Drive (KES 2020-166)Chanhassen, Minnesota Note: Boundaries indicatedon this figure are approximate and do not constitute an official survey product. ¯0 165 Feet Proje ct Bou ndary Pub lic Ditch/Altered Natural Watercourse Pub lic Watercourse Pub lic Waters Source: MNGEO Spatial Commons, MN DNR Figure 6 - National Hydrography Dataset 581 Fox Hill Drive (KES 2020-166)Chanhassen, Minnesota Note: Boundaries indicatedon this figure are approximate and do not constitute an official survey product. ¯0 165 Feet Proje ct Bou ndary Lake/Pond Source: MNGEO Spatial Commons, USGS 581 Fox Hill Drive Wetland Delineation Report APPENDIX A Joint Application Form for Activities Affecting Water Resources in Minnesota 581 Fox Hill Drive Wetland Delineation Report APPENDIX B Wetland Delineation Data Forms Project/Site: Slope (%): Are climatic/hydrologic conditions of the site typical for this time of the year?(If no, explain in remarks) Are vegetation , soil significantly disturbed? Are vegetation , soil naturally problematic? SUMMARY OF FINDINGS Hydrophytic vegetation present? Hydric soil present?Is the sampled area within a wetland? Indicators of wetland hydrology present? Remarks: (Explain alternative procedures here or in a separate report.) Dominance Test Worksheet ) 1 (A) 2 3 (B) 4 5 (A/B) =Total Cover Sapling/Shrub stratum )Prevalence Index Worksheet 1 Total % Cover of: 2 OBL species x 1 = 3 FACW species x 2 = 4 FAC species x 3 = 5 FACU species x 4 = =Total Cover UPL species x 5 = Herb stratum )Column totals (A)(B) 1 Prevalence Index = B/A = 2 3 Hydrophytic Vegetation Indicators: 4 Rapid test for hydrophytic vegetation 5 Dominance test is >50% 6 Prevalence index is ≤3.0* 7 8 9 10 =Total Cover Woody vine stratum ) 1 2 =Total Cover Remarks: (Include photo numbers here or on a separate sheet) Number of Dominant Species that are OBL, FACW, or FAC: Total Number of Dominant Species Across all Strata: Percent of Dominant Species that are OBL, FACW, or FAC: 60 WETLAND DETERMINATION DATA FORM - Midwest Region City/County:Chanhassen/ Carver Sampling Date: *Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic 10/14/2020 Sampling Point:SP1-1UMN Local relief (concave, convex, none):Linear S:1 T:116N R:23W (If needed, explain any answers in remarks.) None , or hydrology , or hydrology 581 Fox Fill Drive Site Hydrophytic vegetation present? (Plot size:30 0 (Plot size:15 Tree Stratum (Plot size: ----------------- 0 0 Morphological adaptations* (provide supporting data in Remarks or on a separate sheet) N 2 0 60 240 0.00% N 0 (Plot size:5 0 4.00 60 240 Problematic hydrophytic vegetation* (explain) 0 0 0 0 0 0 Acer saccharum 30 Y FACU Absolute % Cover30 If yes, optional wetland site ID: 30-day precipitation rolling total drier than normal range. Precipiation from gridded database method is typical. N Quercus rubra 30 Y FACU Dominan t Species Indicator Status N Y VEGETATION -- Use scientific names of plants. Are "normal circumstances" present? Yes Y Lester-Kilkenny Consociation (Non-Hydric)NWI Classification: 0 to 3 Lat:Long:--------------Datum:----------------- Investigator(s):Kyle U. Landform (hillslope, terrace, etc.): Applicant/Owner:See Joint Application Form State: Hillslope Section, Township, Range: Soil Map Unit Name: US Amy Corps of Engineers Midwest Region Iron-Manganese Masses (F12) (LRR K, L, R) Very Shallow Dark Surface (TF12) X Aquatic Fauna (B13) True Aquatic Plants (B14) Hydrogen Sulfide Odor (C1) Presence of Reduced Iron (C4) No free water or saturation was observed in the sample borehole to a depth of 24 inches *Type: C = Concentration, D = Depletion, RM = Reduced Matrix, MS = Masked Sand Grains. **Location: PL = Pore Lining, M = Matrix Indicators of wetland hydrology present? Coast Prairie Redox (A16) (LRR K, L, R) Dark Surface (S7) (LRR K, L) Sandy Gleyed Matrix (S4) Sandy Redox (S5) Indicators for Problematic Hydric Soils: Other (explain in remarks) Stunted or Stressed Plants (D1) Geomorphic Position (D2) Secondary Indicators (minimum of two required) Yes FAC-Neutral Test (D5) Iron Deposits (B5) Drift Deposits (B3) (includes capillary fringe) Inundation Visible on Aerial Imagery (B7) Sparsely Vegetated Concave Surface (B8) Surface water present? Yes NoSaturation present? Field Observations: Depth (inches): Thin Muck Surface (C7) N Water table present?Yes No X Depth (inches): X Stripped Matrix (S6) Loamy Mucky Mineral (F1) Primary Indicators (minimum of one is required; check all that apply) Redox Dark Surface (F6) Depleted Dark Surface (F7) Redox Depressions (F8) No X Recent Iron Reduction in Tilled Soils (C6) Algal Mat or Crust (B4) Depth (inches): Crayfish Burrows (C8) Saturation Visible on Aerial Imagery (C9) Depth (inches): Sediment Deposits (B2) SOIL Wetland Hydrology Indicators: Saturation (A3) HYDROLOGY Surface Water (A1)Surface Soil Cracks (B6) High Water Table (A2) 2 cm Muck (A10) 5 cm Mucky Peat or Peat (S3) Restrictive Layer (if observed): Histosol (A1) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) Stratified Layers (A5) Depleted Below Dark Surface (A11) Thick Dark Surface (A12) Remarks: Water-Stained Leaves (B9) Oxidized Rhizospheres on Living Roots (C3) Drainage Patterns (B10) Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depleted Matrix (F3) Loamy Gleyed Matrix (F2) Gauge or Well Data (D9) Other (Explain in Remarks) Hydric Soil Indicators: Describe recorded data (stream gauge, monitoring well, aerial photos, previous inspections), if available: *Indicators of hydrophytic vegetation and weltand hydrology must be present, unless disturbed or problematic Remarks: Type: Sandy Mucky Mineral (S1) YHydric soil present? Dry-Season Water Table (C2) Water Marks (B1) 11 to 24 10YR 4/2 90 10YR 4/6 10 C M Sandy Clay Loam 0 to 11 10YR 2/1 100 Clay Loam Sampling Point:SP1-1U Depth (Inches) Matrix Redox Features Texture RemarksColor (moist)%Color (moist)%Type*Loc** US Army Corps of Engineers Midwest Region Project/Site: Slope (%): Are climatic/hydrologic conditions of the site typical for this time of the year?(If no, explain in remarks) Are vegetation , soil significantly disturbed? Are vegetation , soil naturally problematic? SUMMARY OF FINDINGS Hydrophytic vegetation present? Hydric soil present?Is the sampled area within a wetland? Indicators of wetland hydrology present? Remarks: (Explain alternative procedures here or in a separate report.) Dominance Test Worksheet ) 1 (A) 2 3 (B) 4 5 (A/B) =Total Cover Sapling/Shrub stratum )Prevalence Index Worksheet 1 Total % Cover of: 2 OBL species x 1 = 3 FACW species x 2 = 4 FAC species x 3 = 5 FACU species x 4 = =Total Cover UPL species x 5 = Herb stratum )Column totals (A)(B) 1 Prevalence Index = B/A = 2 3 Hydrophytic Vegetation Indicators: 4 Rapid test for hydrophytic vegetation 5 Dominance test is >50% 6 Prevalence index is ≤3.0* 7 8 9 10 =Total Cover Woody vine stratum ) 1 2 =Total Cover Remarks: (Include photo numbers here or on a separate sheet) Sparsely vegetated concave surface Number of Dominant Species that are OBL, FACW, or FAC: Total Number of Dominant Species Across all Strata: Percent of Dominant Species that are OBL, FACW, or FAC: 0 WETLAND DETERMINATION DATA FORM - Midwest Region City/County:Chanhassen/ Carver Sampling Date: *Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic 10/14/2020 Sampling Point:SP1-1WMN Local relief (concave, convex, none):Concave S:1 T:116N R:23W (If needed, explain any answers in remarks.) None , or hydrology , or hydrology 581 Fox Fill Drive Site Hydrophytic vegetation present? (Plot size:30 0 (Plot size:15 Tree Stratum (Plot size: ----------------- 0 0 Morphological adaptations* (provide supporting data in Remarks or on a separate sheet) Y 0 0 0 0 0.00% N 0 (Plot size:5 0 0 0 Problematic hydrophytic vegetation* (explain) 0 0 0 0 0 0 Absolute % Cover30 Wetland 1If yes, optional wetland site ID: 30-day precipitation rolling total drier than normal range. Precipiation from gridded database method is typical. Y Dominant Species Indicator Status N Y VEGETATION -- Use scientific names of plants. Are "normal circumstances" present? Yes Y Lester-Kilkenny Consociation (Non-Hydric)NWI Classification: 0 to 3 Lat:Long:--------------Datum:----------------- Investigator(s):Kyle U. Landform (hillslope, terrace, etc.): Applicant/Owner:See Joint Application Form State: Depression Section, Township, Range: Soil Map Unit Name: US Amy Corps of Engineers Midwest Region Iron-Manganese Masses (F12) (LRR K, L, R) Very Shallow Dark Surface (TF12) X X Aquatic Fauna (B13) X True Aquatic Plants (B14) Hydrogen Sulfide Odor (C1) Presence of Reduced Iron (C4) *Type: C = Concentration, D = Depletion, RM = Reduced Matrix, MS = Masked Sand Grains. **Location: PL = Pore Lining, M = Matrix Indicators of wetland hydrology present? Coast Prairie Redox (A16) (LRR K, L, R) Dark Surface (S7) (LRR K, L) Sandy Gleyed Matrix (S4) Sandy Redox (S5) Indicators for Problematic Hydric Soils: Other (explain in remarks) Stunted or Stressed Plants (D1) Geomorphic Position (D2) Secondary Indicators (minimum of two required) Yes FAC-Neutral Test (D5) Iron Deposits (B5) Drift Deposits (B3) (includes capillary fringe) Inundation Visible on Aerial Imagery (B7) Sparsely Vegetated Concave Surface (B8) Surface water present? Yes X NoSaturation present? Field Observations: Depth (inches): Thin Muck Surface (C7) Y Water table present?Yes X No Depth (inches):5 4 Stripped Matrix (S6) Loamy Mucky Mineral (F1) Primary Indicators (minimum of one is required; check all that apply) Redox Dark Surface (F6) Depleted Dark Surface (F7) Redox Depressions (F8) No X Recent Iron Reduction in Tilled Soils (C6) Algal Mat or Crust (B4) Depth (inches): Crayfish Burrows (C8) Saturation Visible on Aerial Imagery (C9) Assumed depleted below dark surface (A12) Depth (inches): Sediment Deposits (B2) SOIL Wetland Hydrology Indicators: Saturation (A3) HYDROLOGY Surface Water (A1)Surface Soil Cracks (B6) High Water Table (A2) 2 cm Muck (A10) 5 cm Mucky Peat or Peat (S3) Restrictive Layer (if observed): Histosol (A1) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) Stratified Layers (A5) Depleted Below Dark Surface (A11) Thick Dark Surface (A12) Remarks: Water-Stained Leaves (B9) Oxidized Rhizospheres on Living Roots (C3) Drainage Patterns (B10) Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depleted Matrix (F3) Loamy Gleyed Matrix (F2) Gauge or Well Data (D9) Other (Explain in Remarks) Hydric Soil Indicators: Describe recorded data (stream gauge, monitoring well, aerial photos, previous inspections), if available: *Indicators of hydrophytic vegetation and weltand hydrology must be present, unless disturbed or problematic Remarks: Type: Sandy Mucky Mineral (S1) YHydric soil present? Dry-Season Water Table (C2) Water Marks (B1) 0 to 24 10YR 2/1 100 Clay Loam Sampling Point:SP1-1W Depth (Inches) Matrix Redox Features Texture RemarksColor (moist)%Color (moist)%Type*Loc** US Army Corps of Engineers Midwest Region Project/Site: Slope (%): Are climatic/hydrologic conditions of the site typical for this time of the year?(If no, explain in remarks) Are vegetation , soil significantly disturbed? Are vegetation , soil naturally problematic? SUMMARY OF FINDINGS Hydrophytic vegetation present? Hydric soil present?Is the sampled area within a wetland? Indicators of wetland hydrology present? Remarks: (Explain alternative procedures here or in a separate report.) Dominance Test Worksheet ) 1 (A) 2 3 (B) 4 5 (A/B) =Total Cover Sapling/Shrub stratum )Prevalence Index Worksheet 1 Total % Cover of: 2 OBL species x 1 = 3 FACW species x 2 = 4 FAC species x 3 = 5 FACU species x 4 = =Total Cover UPL species x 5 = Herb stratum )Column totals (A)(B) 1 Prevalence Index = B/A = 2 3 Hydrophytic Vegetation Indicators: 4 Rapid test for hydrophytic vegetation 5 Dominance test is >50% 6 Prevalence index is ≤3.0* 7 8 9 10 =Total Cover Woody vine stratum ) 1 2 =Total Cover Remarks: (Include photo numbers here or on a separate sheet) Number of Dominant Species that are OBL, FACW, or FAC: Total Number of Dominant Species Across all Strata: Percent of Dominant Species that are OBL, FACW, or FAC: 60 WETLAND DETERMINATION DATA FORM - Midwest Region City/County:Chanhassen/ Carver Sampling Date: *Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic 10/14/2020 Sampling Point:SP-AMN Local relief (concave, convex, none):Linear S:1 T:116N R:23W (If needed, explain any answers in remarks.) None , or hydrology , or hydrology 581 Fox Fill Drive Site Hydrophytic vegetation present? (Plot size:30 10 (Plot size:15 Tree Stratum (Plot size: ----------------- 10 20 Morphological adaptations* (provide supporting data in Remarks or on a separate sheet) N 5 1 85 340 20.00% N 0 Thalictrum dioicum 5 Y FACU (Plot size:5 Acer saccharum 5 Y FACU 40 3.68 110 405 Problematic hydrophytic vegetation* (explain) 0 0 0 0 15 45 Acer saccharum 25 Y FACU Rhamnus cathartica 15 Y FAC Tilia americana 10 N FACU Acer saccharinum 10 N FACW Quercus rubra 10 N FACU Absolute % Cover30 If yes, optional wetland site ID: 30-day precipitation rolling total drier than normal range. Precipiation from gridded database method is typical. N Acer saccharum 30 Y FACU Dominan t Species Indicator Status N N VEGETATION -- Use scientific names of plants. Are "normal circumstances" present? Yes Y Lester-Kilkenny Consociation (Non-Hydric)NWI Classification: 0 to 3 Lat:Long:--------------Datum:----------------- Investigator(s):Kyle U. Landform (hillslope, terrace, etc.): Applicant/Owner:See Joint Application Form State: Hillslope Section, Township, Range: Soil Map Unit Name: US Amy Corps of Engineers Midwest Region Iron-Manganese Masses (F12) (LRR K, L, R) Very Shallow Dark Surface (TF12) Aquatic Fauna (B13) True Aquatic Plants (B14) Hydrogen Sulfide Odor (C1) Presence of Reduced Iron (C4) 18 to 24 10YR 4/2 95 10YR 4/6 5 C M Sandy Clay Loam No free water or saturation was observed in the sample borehole to a depth of 24 inches *Type: C = Concentration, D = Depletion, RM = Reduced Matrix, MS = Masked Sand Grains. **Location: PL = Pore Lining, M = Matrix Indicators of wetland hydrology present? Coast Prairie Redox (A16) (LRR K, L, R) Dark Surface (S7) (LRR K, L) Sandy Gleyed Matrix (S4) Sandy Redox (S5) Indicators for Problematic Hydric Soils: Other (explain in remarks) Stunted or Stressed Plants (D1) Geomorphic Position (D2) Secondary Indicators (minimum of two required) Yes FAC-Neutral Test (D5) Iron Deposits (B5) Drift Deposits (B3) (includes capillary fringe) Inundation Visible on Aerial Imagery (B7) Sparsely Vegetated Concave Surface (B8) Surface water present? Yes NoSaturation present? Field Observations: Depth (inches): Thin Muck Surface (C7) N Water table present?Yes No X Depth (inches): X Stripped Matrix (S6) Loamy Mucky Mineral (F1) Primary Indicators (minimum of one is required; check all that apply) Redox Dark Surface (F6) Depleted Dark Surface (F7) Redox Depressions (F8) No X Recent Iron Reduction in Tilled Soils (C6) Algal Mat or Crust (B4) Depth (inches): Crayfish Burrows (C8) Saturation Visible on Aerial Imagery (C9) Depth (inches): Sediment Deposits (B2) SOIL Wetland Hydrology Indicators: Saturation (A3) HYDROLOGY Surface Water (A1)Surface Soil Cracks (B6) High Water Table (A2) 2 cm Muck (A10) 5 cm Mucky Peat or Peat (S3) Restrictive Layer (if observed): Histosol (A1) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) Stratified Layers (A5) Depleted Below Dark Surface (A11) Thick Dark Surface (A12) Remarks: Water-Stained Leaves (B9) Oxidized Rhizospheres on Living Roots (C3) Drainage Patterns (B10) Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depleted Matrix (F3) Loamy Gleyed Matrix (F2) Gauge or Well Data (D9) Other (Explain in Remarks) Hydric Soil Indicators: Describe recorded data (stream gauge, monitoring well, aerial photos, previous inspections), if available: *Indicators of hydrophytic vegetation and weltand hydrology must be present, unless disturbed or problematic Remarks: Type: Sandy Mucky Mineral (S1) NHydric soil present? Dry-Season Water Table (C2) Water Marks (B1) 8 to 18 2.5Y 4/3 100 Sandy Clay Loam 0 to 8 10YR 2/1 100 Sandy Clay Loam Sampling Point:SP-A Depth (Inches) Matrix Redox Features Texture RemarksColor (moist)%Color (moist)%Type*Loc** US Army Corps of Engineers Midwest Region 581 Fox Hill Drive Wetland Delineation Report APPENDIX C Precipitation Data 11/2/2020 Precipitation Documentation Worksheet Using Gridded Database https://climateapps.dnr.state.mn.us/gridded_data/precip/wetland/worksheet.asp?passXutm83=458073&passYutm83=4970217&passcounty=Carver&p…1/1 Minnesota State Climatology Office State Climatology Office - DNR Division of Ecological and Water Resources home | current conditions | journal | past data | summaries | agriculture | other sites | about us Precipitation data for target wetland location: county: Carver township number: 116N township name: Lake Minnewashta range number: 23W nearest community: Carver Beach section number: 1 Aerial photograph or site visit date: Sunday, November 1, 2020 Score using 1981-2010 normal period values are in inches A 'R' following a monthly total indicates a provisional value derived from radar-based estimates. first prior month: October 2020 second prior month: September 2020 third prior month: August 2020 multi-month score: 6 to 9 (dry) 10 to 14 (normal) 15 to 18 (wet) Other Resources: retrieve daily precipitation data view radar-based precipitation estimates view weekly precipitation maps Evaluating Antecedent Precipitation Conditions (BWSR) estimated precipitation total for this location:2.57 1.10R 7.12R monthly score 3 * 2 = 6 2 * 1 = 2 1 * 3 = 3 11 (Normal) there is a 30% chance this location will have less than:1.17 2.50 3.14 there is a 30% chance this location will have more than:3.50 4.77 5.43 type of month: dry normal wet normal dry wet Precipitation Worksheet Using Gridded Database 0 1 2 3 4 5 6 7 8 9 10 11 12 13 7/30/20 8/14/20 8/29/20 9/13/20 9/28/20 10/13/20 10/28/20Daily and monthly total precipitation (inches) monthly precip daily precip 30d rolling total Series6 30 -day rolling total normal precip range Site Visit Climate Conditions Chanhassen,MN Site Visit October 14, 2020 Chanhassen MN: Precipitation Summary Source: Minnesota Climatology Working Group Monthly Totals: 2020 latitude: 44.88414 longitude: 93.53089 Target: 116N 23W S1 mon year cc tttN rrW ss nnnn oooooooo pre (inches) Jan 2020 10 116N 23W 15 NWS CHAN_NWS .78 Feb 2020 10 116N 23W 15 NWS CHAN_NWS .59 Mar 2020 10 116N 23W 15 NWS CHAN_NWS 2.88 Apr 2020 27 116N 22W 7 BYRG 1.83 May 2020 27 116N 22W 7 BYRG 5.19 Jun 2020 10 116N 23W 13 BYRG 4.56 Jul 2020 27 116N 22W 7 BYRG 4.40 Aug 2020 27 116N 22W 7 BYRG 8.34 Sep 2020 27 116N 22W 7 BYRG 1.13 Oct 2020 10 116N 23W 15 NWS CHAN_NWS 2.57 August/September/October Daily Records Date Precip. Aug 1, 2020 .15 Aug 2, 2020 0 Aug 3, 2020 0 Aug 4, 2020 0 Aug 5, 2020 0 Aug 6, 2020 0 Aug 7, 2020 0 Aug 8, 2020 .05 Aug 9, 2020 .70 Aug 10, 2020 4.65 Aug 11, 2020 0 Aug 12, 2020 .68 Aug 13, 2020 .02 Aug 14, 2020 0 Aug 15, 2020 .60 Aug 16, 2020 0 Aug 17, 2020 .11 Aug 18, 2020 0 Aug 19, 2020 0 Aug 20, 2020 0 Aug 21, 2020 0 Aug 22, 2020 0 Aug 23, 2020 .20 Aug 24, 2020 0 Aug 25, 2020 0 Aug 26, 2020 0 Aug 27, 2020 0 Aug 28, 2020 .50 Aug 29, 2020 0 Aug 30, 2020 .68 Aug 31, 2020 0 1981-2010 Summary Statistics Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec WARM ANN WAT 30% 0.52 0.42 1.22 2.01 2.55 3.13 3.14 3.14 2.50 1.17 1.12 0.75 17.59 29.34 27.32 70% 1.15 0.93 2.08 2.94 4.21 4.92 4.20 5.43 4.77 3.50 1.90 1.40 22.19 34.91 34.95 mean 0.90 0.79 1.75 2.66 3.47 4.32 4.25 4.40 3.61 2.51 1.80 1.17 20.05 31.62 31.45 Date Precip. Sep 1, 2020 0 Sep 2, 2020 0 Sep 3, 2020 0 Sep 4, 2020 0 Sep 5, 2020 0 Sep 6, 2020 .20 Sep 7, 2020 .18 Sep 8, 2020 .15 Sep 9, 2020 .17 Sep 10, 2020 0 Sep 11, 2020 0 Sep 12, 2020 .15 Sep 13, 2020 0 Sep 14, 2020 0 Sep 15, 2020 0 Sep 16, 2020 0 Sep 17, 2020 0 Sep 18, 2020 0 Sep 19, 2020 0 Sep 20, 2020 0 Sep 21, 2020 .08 Sep 22, 2020 0 Sep 23, 2020 0 Sep 24, 2020 .10 Sep 25, 2020 0 Sep 26, 2020 0 Sep 27, 2020 0 Sep 28, 2020 .08 Sep 29, 2020 0 Sep 30, 2020 .02 Date Precip. Oct 1, 2020 T Oct 2, 2020 0 Oct 3, 2020 0 Oct 4, 2020 0 Oct 5, 2020 0 Oct 6, 2020 0 Oct 7, 2020 0 Oct 8, 2020 0 Oct 9, 2020 0 Oct 10, 2020 0 Oct 11, 2020 .90 Oct 12, 2020 .58 Oct 13, 2020 0 Oct 14, 2020 .05 (site visit) Oct 15, 2020 0 Oct 16, 2020 .01 Oct 17, 2020 .04 Oct 18, 2020 0 Oct 19, 2020 .04 Oct 20, 2020 .75 Oct 21, 2020 T Oct 22, 2020 .09 Oct 23, 2020 .06 Oct 24, 2020 0 Oct 25, 2020 .05 Oct 26, 2020 0 Oct 27, 2020 0 Oct 28, 2020 0 Oct 29, 2020 0 Oct 30, 2020 0 Oct 31, 2020 T Wetland Functional Assessment Summary Wetland Name Maintenance of Hydrologic Regime Flood/ Stormwater/ Attenuation Downstream Water Quality Maintenance of Wetland Water Quality Shoreline ProtectionHydrogeomorphology Wetland Name Ground- Water Interaction Maintenance of Characteristic Wildlife Habitat Structure Maintenance of Characteristic Fish Habitat Aesthetics/ Recreation/ Education/ Cultural Commercial Uses Wetland Restoration Potential Wetland Sensitivity to Stormwater and Urban Development Additional Stormwater Treatment Needs Maintenance of Characteristic Amphibian Habitat Additional Information Cowardin ClassificationWetland Name Location Vegetative Diversity/Integrity Plant Community Wetland Community Summary Circular 39 Wetland Proportion Individual Community Rating Highest Wetland Rating Average Wetland Rating Weighted Average Wetland Rating Community Denotes incomplete calculation data. High High Moderate Moderate Not Applicable Depressional/Isolated (no discernable inlets or outlets)0.75 0.68 0.62 0.58 0.00Fox Hill Chanhassen Combination Discharge, Recharge Moderate Not Applicable Moderate Not Applicable Not Applicable Exceptional ModerateModerate 0.63 0.00 0.43 0.00 0.00 0.10 0.580.42Fox Hill Chanhassen PEM1A Type 1 Seasonally Flooded Basin 100 0.1 0.10 0.10 0.10 Low Low Low Fox Hill Chanhassen 10-116-23-01-001 Low Low Low1000.10 0.10 0.10 Friday, May 28, 2021 Page 1 of 1 Management Classification Report for 82 Fox Hill ChanhassenFox Hill Chanhassen County Corps Bank Service Area CARVER 33 9 ID: Minnesota (Shakopee)Watershed, # Based on the MnRAM data input from field and office review and using the classification settings as shown below, this wetland is classified as Functional rank of this wetland based on MnRAM data Functional Category Self-defined classification value settings for this management level Vegetative Diversity/Integrity Habitat Structure (wildlife) Amphibian Habitat Fish Habitat Shoreline Protection Aesthetic/Cultural/Rec/Ed and Habitat Stormwater/Urban Sensitivity and Vegetative Diversity Wetland Water Quality and Vegetative Diversity Characteristic Hydrology and Vegetative Diversity Flood/Stormwater Attenuation* Commericial use* Downstream Water Quality* Low Moderate Moderate Not Applicable Not Applicable Moderate Not Applicable Moderate High High Exceptional The critical function that caused this wetland to rank as Moderate Details of the formula for this action are shown below: Manage 1 High High Moderate High Moderate High High High High - High - Manage 1 Maintenance of Characteristic Amphibian Habitat was /Moderate / / / Moderate Moderate Moderate (Q43) * [( Q44 + 2*Q23wildlife + Q14 +Q 41 + Q20 reversed)/6] Value Description Maintenance of Characteristic Amphibian Habitat Question 14 Upland land use0.5 20 Stormwater runoff0.5 23 Buffer width0.5 41 Wildlife barriers0.5 43 Amphib breeding potential--fish presence1 44 Amphib & reptile overwintering habitat0 Friday, May 28, 2021This report was printed on: * The classification value settings for these functions are not adjustable 82Fox Hill Chanhassen MnRAM: Site Response Record For Wetland:Fox Hill Chanhassen Location:10-116-23-01-001 4 No 5 No 6 No 7 Depressional/Isolated 8-1 2 inches 8-2 80% 9 1.46 acre 11-Upland Soil Lester-Kilkenny complex, 6 to 12 percent slopes 11-Wetland Soil Lester-Kilkenny complex, 6 to 12 percent slopes 12 B 13 A 14 B 15 A 16 10% 17 NA 18 A 19 B 20 B 21 A 22 A 23 50 feet 24-A 100% 24-B 0% 24-C 0% 25-A 85% 25-B 15% 25-C 0% Outlet for flood control Outlet for hydro regime Dominant upland land use Wetland soil condition Vegetation (% cover) Emerg. veg flood resistance Sediment delivery Upland soils (soil group) Stormwater runoff Subwatershed wetland density Channels/sheet flow Adjacent buffer width Adjacent area management Full Manicured Bare Adjacent area diversity/structure Native Mixed Sparse Listed, rare, special species? Rare community or habitat? Pre-European-settlement condition? Hydrogeomorphology / topography: Maximum water depth % inundated Immediate drainage--local WS 10 Esimated size/existing site: (see #66) PEM1A Type 1 Plant Community:Seasonally Flooded Ba Cowardin Classification: Circular 39:26-A 100% 26-B 0% 26-C 0% 27 B 28 A 29 No 30 0% 31 0 feet 32 33 34 35 No 36 No 37 NA 38 NA 39 A 40 A 41 B 42 Adequate 43 A 44 45 46 NA 47 48 No 49 C 50 Yes 51 C 52 C 53 A 54 B 55 B 56 C 57 NA Gentle Moderate Steep Adjacent area slope Downstream sens./WQ protect. Nutrient loading Shoreline wetland? Rooted veg., % cover Wetland in-water width Emerg. veg. erosion resistance Erosion potential of site Upslope veg./bank protection Rare wildlife? Scare/Rare/S1/S2 community Vegetative cover Veg. community interspersion Wetland detritus Interspersion on landscape Wildlife barriers Hydroperiod adequacy Fish presence Overwintering habitat Wildlife species (list) Fish habitat quality Fish species (list) Unique/rare opportunity Wetland visibility Proximity to population Public ownership Public access Human influence on wetland Human influence on viewshed Spatial buffer Recreational activity potential Commercial crop--hydro impact Shoreline Wetland Amphibian-breeding potential 58 Recharge 59 Discharge 60 Discharge 61 Recharge 62 Recharge 63 Recharge 64 No 65 66 0.11 0 0 67 0 feet 68 69 0 70 0 71 Exceptional 72 A Wetland soils Subwatershed land use Wetland size/soil group Wetland hydroperiod Inlet/Outlet configuration Upland topo relief Restoration potential LO affected by restoration Existing size Restorable size Potential new wetland Average width of pot. buffer Ease of potential restoration Hydrologic alterations Potential wetland type Stormwater sensitivity Additional treatment needs Groundwater-specific questions For functional ratings, please run the Summary tab report. Additional information This report printed on:5/28/2021 Minnesota (Shakopee)Watershed : Service Area:9WS#33