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HomeMy WebLinkAboutWPO202200038 Calculations 2022-09-14 (12)11S Forebay 1 Existing SWM #1 Existing 12S -� 9P -p 7P Existing Forebay 3 Existing SWM #3 - Retention Post #4 Existing SWM #4 - Rte. 250 Subcat Reach Aon Llnk Existing Ponds Prepared by HP Inc. Project Notes Rainfall events imported from "breezy hill.hcp" Printed 9/6/2022 Existing Ponds Prepared by HP Inc. Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 6.040 80 (10S) 28.450 78 (11S, 12S) 34.490 78 TOTAL AREA Printed 9/6/2022 Existing Ponds Prepared by HP Inc. Type 1124-hr 1 inch-24hr Rainfall= 1. 00 " Printed 9/6/2022 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 10S: Post #4 Runoff Area=6.040 ac 0.00% Impervious Runoff Depth>0.07" Flow Length=450' Tc=12.0 min CN=80 Runoff=0.31 cfs 0.035 of Subcatchment 11S: Existing Runoff Area=20.600 ac 0.00% Impervious Runoff Depth>0.05" Tc=12.0 min CN=78 Runoff=0.41 cfs 0.080 of Subcatchment 12S: Existing Runoff Area=7.850 ac 0.00% Impervious Runoff Depth>0.05" Tc=10.0 min CN=78 Runoff=0.17 cfs 0.030 of Pond 4P: Existing SWM #1 Peak EIev=357.60' Storage=83,745 cf Inflow=0.41 cfs 0.080 of 18.0" Round Culvert n=0.025 L=40.0' S=0.1125'/' Outflow=0.05 cfs 0.019 of Pond 5P: Forebay 1 Peak EIev=360.61' Storage=10,934 cf Inflow=0.41 cfs 0.080 of 12.0" Round Culvert n=0.025 L=40.0' S=0.0563'/' Outflow=0.41 cfs 0.080 of Pond 7P: Existing SWM #3 - Retention Peak EIev=368.53' Storage=95,959 cf Inflow=0.04 cfs 0.020 of Outflow=0.01 cfs 0.003 of Pond 8P: Existing SWM #4 - Rte. 250 Peak EIev=370.33' Storage=29,280 cf Inflow=0.31 cfs 0.035 of 15.0" Round Culvert n=0.025 L=100.0' S=0.06257 Outflow=0.02 cfs 0.011 of Pond 9P: Forebay 3 Peak EIev=375.85' Storage=8,548 cf Inflow=0.17 cfs 0.030 of 12.0" Round Culvert n=0.025 L=50.0' S=0.1150'/' Outflow=0.04 cfs 0.020 of Total Runoff Area = 34.490 ac Runoff Volume = 0.145 of Average Runoff Depth = 0.05" 100.00% Pervious = 34.490 ac 0.00% Impervious = 0.000 ac Existing Ponds Prepared by HP Inc. Type 1124-hr 1 inch-24hr Rainfall= 1. 00 " Printed 9/6/2022 Summary for Subcatchment 10S: Post #4 Runoff = 0.31 cfs @ 12.10 hrs, Volume= 0.035 af, Depth> 0.07" Routed to Pond 8P : Existing SWM #4 - Rte. 250 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1 inch-24hr Rainfall=1.00" Area (ac) CN 6.040 80 6.040 100.00% Pervious Area Tc Length Slope Velocity Capacity Description 9.7 150 0.0400 0.26 Sheet Flow, Grass: Short n= 0.150 P2= 3.59" 2.3 300 0.1000 2.21 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fos 12.0 450 Total Q Subcatchment 10S: Post #4 Hydrograph ______`®M__ • 1 1 1 dow- 1 INRom", IPA � 1111111111111 111111111111� 191001 „0010 5 6 .7. 8. 9. 10 11 12 ... ,.. 13 14 15 16 17 18 19 20 Time (hours) ■ Rurwff Existing Ponds Prepared by HP Inc. Type 1124-hr 1 inch-24hr Rainfall= 1. 00 " Printed 9/6/2022 Summary for Subcatchment 11S: Existing Runoff = 0.41 cfs @ 12.13 hrs, Volume= 0.080 af, Depth> 0.05" Routed to Pond 5P : Forebay 1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1 inch-24hr Rainfall=1.00" Area (ac) CN Description 20.600 78 20.600 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment 11S: Existing Hydrograph ❑ RunoH 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Existing Ponds Prepared by HP Inc. Type 1124-hr 1 inch-24hr Rainfall= 1. 00 " Printed 9/6/2022 Summary for Subcatchment 12S: Existing Runoff = 0.17 cfs @ 12.10 hrs, Volume= 0.030 af, Depth> 0.05" Routed to Pond 9P : Forebay 3 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1 inch-24hr Rainfall=1.00" Area (ac) CN 7.850 78 7.850 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 12S: Existing Hydrograph ■ Rurwff Time (hours) Existing Ponds Prepared by HP Inc. Type 1124-hr 1 inch-24hr Rainfall= 1. 00 " Printed 9/6/2022 Summary for Pond 4P: Existing SWM #1 Inflow Area = 20.600 ac, 0.00% Impervious, Inflow Depth > 0.05" for 1 inch-24hr event Inflow = 0.41 cfs @ 12.13 hrs, Volume= 0.080 of Outflow = 0.05 cfs @ 20.00 hrs, Volume= 0.019 af, Atten= 88%, Lag= 472.2 min Primary = 0.05 cfs @ 20.00 hrs, Volume= 0.019 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 357.50' Surf.Area= 25,454 sf Storage= 81,087 cf Peak Elev= 357.60' @ 20.00 hrs Surf.Area= 25,591 sf Storage= 83,745 cf (2,658 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 129.7 min ( 1,030.0 - 900.3 ) Volume Invert Avail.Storage Storage Description #1 354.00' 93,979 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 354.00 20,926 0 0 356.00 23,469 44,395 44,395 358.00 26,115 49,584 93,979 Device Routino Invert Outlet Devices #1 Primary 357.50' 18.0" Round Culvert L= 40.0' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 357.50' / 353.00' S= 0.1125 '/' Cc= 0.900 n= 0.025, Flow Area= 1.77 sf Primary OutFlow Max=0.05 cfs @ 20.00 hrs HW=357.60' (Free Discharge) t1=Culvert (Inlet Controls 0.05 cfs @ 0.87 fps) Existing Ponds Prepared by HP Inc. Type 1124-hr 1 inch-24hrRainfall=1.00" Printed 9/6/2022 Pond 4P: Existing SWM #1 Hydrograph Time (hours) ■ hiflow ■ Primary Existing Ponds Prepared by HP Inc. Type 1124-hr 1 inch-24hr Rainfall= 1. 00 " Printed 9/6/2022 Summary for Pond 5P: Forebay 1 [92] Warning: Device #1 is above defined storage [93] Warning: Storage range exceeded by 0.61' Inflow Area = 20.600 ac, 0.00% Impervious, Inflow Depth > 0.05" for 1 inch-24hr event Inflow = 0.41 cfs @ 12.13 hrs, Volume= 0.080 of Outflow = 0.41 cfs @ 12.13 hrs, Volume= 0.080 af, Atten= 0%, Lag= 0.0 min Primary = 0.41 cfs @ 12.13 hrs, Volume= 0.080 of Routed to Pond 4P : Existing SWM #1 Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 360.25' Surf.Area= 6,188 sf Storage= 10,934 cf Peak Elev= 360.61' @ 12.13 hrs Surf.Area= 6,188 sf Storage= 10,934 cf Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Volume Invert Avail.Storage Storage Description #1 358.00' 10,934 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 358.00 4,746 0 0 360.00 6,188 10,934 10,934 Device Routino Invert Outlet Devices #1 Primary 360.25' 12.0" Round Culvert L= 40.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 360.25' / 358.00' S= 0.0563 '/' Cc= 0.900 n= 0.025, Flow Area= 0.79 sf Primary OutFlow Max=0.40 cfs @ 12.13 hrs HW=360.61' (Free Discharge) t1=Culvert (Inlet Controls 0.40 cfs @ 1.60 fps) Existing Ponds Prepared by HP Inc. Type // 24-hr 1 inch-24hr Rainfall= 1. 00 " Printed 9/6/2022 Pond 5P: Forebay 1 Hydrograph Time (hours) ■ hiflow ■ Primary Existing Ponds Prepared by HP Inc. Type 1124-hr 1 inch-24hr Rainfall= 1. 00 " Summary for Pond 7P: Existing SWM #3 - Retention Printed 9/6/2022 Inflow Area = 7.850 ac, 0.00% Impervious, Inflow Depth > 0.03" for 1 inch-24hr event Inflow = 0.04 cfs @ 15.87 hrs, Volume= 0.020 of Outflow = 0.01 cfs @ 20.00 hrs, Volume= 0.003 af, Atten= 72%, Lag= 247.7 min Primary = 0.01 cfs @ 20.00 hrs, Volume= 0.003 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 368.50' Surf.Area= 23,910 sf Storage= 95,248 cf Peak Elev= 368.53' @ 20.00 hrs Surf.Area= 23,951 sf Storage= 95,959 cf (712 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 68.0 min ( 1,057.3 - 989.3 ) Volume Invert Avail.Storage Storage Description #1 364.00' 132,639 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 364.00 18,556 0 0 366.00 20,837 39,393 39,393 368.00 23,232 44,069 83,462 370.00 25,945 49,177 132,639 Device Routing Invert Outlet Devices #1 Primary 368.50' 6.0" Round Culvert L= 60.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 368.50' / 367.00' S= 0.0250 '/' Cc= 0.900 n= 0.025, Flow Area= 0.20 sf #2 Primary 368.50' 30.0" Round Culvert L= 60.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 368.50' / 367.00' S= 0.0250 '/' Cc= 0.900 n= 0.025, Flow Area= 4.91 sf Primary OutFlow Max=0.01 cfs @ 20.00 hrs HW=368.53' (Free Discharge) �1=Culvert (Barrel Controls 0.00 cfs @ 0.56 fps) 2=Culvert (Barrel Controls 0.00 cfs @ 0.57 fps) Existing Ponds Prepared by HP Inc. Type // 24-hr 1 inch-24hr Rainfall= 1. 00 " Printed 9/6/2022 Pond 7P: Existing SWM #3 - Retention Hydrograph Time (hours) ■ Inflow ■ Primary Existing Ponds Prepared by HP Inc. Type 1124-hr 1 inch-24hr Rainfall= 1. 00 " Summary for Pond 8P: Existing SWM #4 - Rte. 250 Printed 9/6/2022 Inflow Area = 6.040 ac, 0.00% Impervious, Inflow Depth > 0.07" for 1 inch-24hr event Inflow = 0.31 cfs @ 12.10 hrs, Volume= 0.035 of Outflow = 0.02 cfs @ 20.00 hrs, Volume= 0.011 af, Atten= 93%, Lag= 473.9 min Primary = 0.02 cfs @ 20.00 hrs, Volume= 0.011 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 370.25' Surf.Area= 13,714 sf Storage= 28,242 cf Peak Elev= 370.33' @ 20.00 hrs Surf.Area= 13,795 sf Storage= 29,280 cf (1,038 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 135.1 min ( 1,013.4 - 878.3 ) Volume Invert Avail.Storage Storage Description #1 368.00' 53,889 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 368.00 11,402 0 0 370.00 13,445 24,847 24,847 372.00 15,597 29,042 53,889 Device Routino Invert Outlet Devices #1 Primary 370.25' 15.0" Round Culvert L= 100.0' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 370.25' / 364.00' S= 0.0625 '/' Cc= 0.900 n= 0.025 Corrugated metal, Flow Area= 1.23 sf Primary OutFlow Max=0.02 cfs @ 20.00 hrs HW=370.33' (Free Discharge) t1=Culvert (Inlet Controls 0.02 cfs @ 0.74 fps) Existing Ponds Prepared by HP Inc. Type // 24-hr 1 inch-24hr Rainfall= 1. 00 " Printed 9/6/2022 Pond 812: Existing SWM #4 - Rte. 250 Hydrograph Time (hours) ■ Inflow ■ Primary Existing Ponds Prepared by HP Inc. Type 1124-hr 1 inch-24hr Rainfall= 1. 00 " Printed 9/6/2022 Summary for Pond 9P: Forebay 3 Inflow Area = 7.850 ac, 0.00% Impervious, Inflow Depth > 0.05" for 1 inch-24hr event Inflow = 0.17 cfs @ 12.10 hrs, Volume= 0.030 of Outflow = 0.04 cfs @ 15.87 hrs, Volume= 0.020 af, Atten= 79%, Lag= 226.1 min Primary = 0.04 cfs @ 15.87 hrs, Volume= 0.020 of Routed to Pond 7P : Existing SWM #3 - Retention Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 375.75' Surf.Area= 5,090 sf Storage= 8,022 cf Peak Elev= 375.85' @ 15.87 hrs Surf.Area= 5,150 sf Storage= 8,548 cf (525 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 90.3 min ( 989.3 - 899.0 ) Volume Invert Avail.Storage Storage Description #1 374.00' 9,313 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 374.00 4,078 0 0 376.00 5,235 9,313 9,313 Device Routino Invert Outlet Devices #1 Primary 375.75' 12.0" Round Culvert L= 50.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 375.75' / 370.00' S= 0.1150 '/' Cc= 0.900 n= 0.025, Flow Area= 0.79 sf Primary OutFlow Max=0.04 cfs @ 15.87 hrs HW=375.85' (Free Discharge) t1=Culvert (Inlet Controls 0.04 cfs @ 0.86 fps) Existing Ponds Prepared by HP Inc. Type 1124-hr 1 inch-24hr Rainfall= 1. 00" Printed 9/6/2022 Pond 912: Forebay 3 Hydrograph Time (hours) ■ h fim— ■ Primary Existing Ponds Prepared by HP Inc. Type // 24-hr 1-yr Rainfall=2.97" Printed 9/6/2022 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 10S: Post #4 Runoff Area=6.040 ac 0.00% Impervious Runoff Depth>1.12" Flow Length=450' Tc=12.0 min CN=80 Runoff=10.47 cfs 0.562 of Subcatchment 11S: Existing Runoff Area=20.600 ac 0.00% Impervious Runoff Depth>1.00" Tc=12.0 min CN=78 Runoff=31.97 cfs 1.722 of Subcatchment 12S: Existing Runoff Area=7.850 ac 0.00% Impervious Runoff Depth>1.00" Tc=10.0 min CN=78 Runoff=13.02 cfs 0.657 of Pond 4P: Existing SWIM #1 Peak Elev=399.94' Storage=93,979 cf Inflow=31.97 cfs 1.722 of 18.0" Round Culvert n=0.025 L=40.0' S=0.1125 7' Outflow=43.38 cfs 1.473 of Pond 5P: Forebay 1 Peak Elev=527.33' Storage=10,934 cf Inflow=31.97 cfs 1.722 of 12.0" Round Culvert n=0.025 L=40.0' S=0.0563'/' Outflow=31.97 cfs 1.722 of Pond 7P: Existing SWIM #3 - Retention Peak EIev=369.00' Storage=107,347 cf Inflow=13.53 cfs 0.627 of Outflow=1.70 cfs 0.517 of Pond 8P: Existing SWIM #4 - Rte. 250 Peak EIev=371.03' Storage=39,246 cf Inflow=10.47 cfs 0.562 of 15.0" Round Culvert n=0.025 L=100.0' S=0.0625 7 Outflow=1.91 cfs 0.480 of Pond 9P: Forebay 3 Peak EIev=406.15' Storage=9,313 cf Inflow=13.02 cfs 0.657 of 12.0" Round Culvert n=0.025 L=50.0' S=0.1150 T Outflow=13.53 cfs 0.627 of Total Runoff Area = 34.490 ac Runoff Volume = 2.942 of Average Runoff Depth = 1.02" 100.00% Pervious = 34.490 ac 0.00% Impervious = 0.000 ac Existing Ponds Prepared by HP Inc. Type // 24-hr 1-yr Rainfall=2.97" Printed 9/6/2022 Summary for Subcatchment 10S: Post #4 Runoff = 10.47 cfs @ 12.04 hrs, Volume= 0.562 af, Depth> 1.12" Routed to Pond 8P : Existing SWM #4 - Rte. 250 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.97" Area (ac) CN 6.040 80 6.040 100.00% Pervious Area Tc Length Slope Velocity Capacity Description 9.7 150 0.0400 0.26 Sheet Flow, Grass: Short n= 0.150 P2= 3.59" 2.3 300 0.1000 2.21 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fos 12.0 450 Total Subcatchment 10S: Post #4 Hydrograph Time (hours) ❑ RunoH Existing Ponds Prepared by HP Inc. Type // 24-hr 1-yr Rainfall=2.97" Printed 9/6/2022 Summary for Subcatchment 11S: Existing Runoff = 31.97 cfs @ 12.05 hrs, Volume= 1.722 af, Depth> 1.00" Routed to Pond 5P : Forebay 1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.97" Area (ac) CN 20.600 78 20.600 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment 11S: Existing Hydrograph ■ Rurwff Time (hours) Existing Ponds Prepared by HP Inc. Type // 24-hr 1-yr Rainfall=2.97" Printed 9/6/2022 Summary for Subcatchment 12S: Existing Runoff = 13.02 cfs @ 12.02 hrs, Volume= 0.657 af, Depth> 1.00" Routed to Pond 9P : Forebay 3 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.97" Area (ac) CN Description 7.850 78 7.850 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 12S: Existing Hydrograph 11- �iii� IM IMM1r7�g"RE .IMM� .IMM� .IMIMM IMIMIMM - no 6 7 8 9 19 11 12 13 14 15 16 17 18 19 20 Time (hours) ■ Rurwff Existing Ponds Prepared by HP Inc. Type // 24-hr 1-yr Rainfall=2.97" Printed 9/6/2022 Summary for Pond 4P: Existing SWM #1 [93] Warning: Storage range exceeded by 41.94' [88] Warning: Qout>Qin may require smaller dt or Finer Routing [85] Warning: Oscillations may require smaller dt or Finer Routing (severity=34) [79] Warning: Submerged Pond 5P Primary device # 1 INLET by 39.69' Inflow Area = 20.600 ac, 0.00% Impervious, Inflow Depth > 1.00" for 1-yr event Inflow = 31.97 cfs @ 12.05 hrs, Volume= 1.722 of Outflow = 43.38 cfs @ 12.05 hrs, Volume= 1.473 af, Atten= 0%, Lag= 0.2 min Primary = 43.38 cfs @ 12.05 hrs, Volume= 1.473 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 357.50' Surf.Area= 25,454 sf Storage= 81,087 cf Peak Elev= 399.94' @ 12.05 hrs Surf.Area= 26,115 sf Storage= 93,979 cf (12,892 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 29.3 min ( 836.3 - 807.0 ) Volume Invert Avail.Storage Storage Description #1 354.00' 93,979 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 354.00 20,926 0 0 356.00 23,469 44,395 44,395 358.00 26,115 49,584 93,979 Device Routing Invert Outlet Devices #1 Primary 357.50' 18.0" Round Culvert L= 40.0' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 357.50' / 353.00' S= 0.1125 '/' Cc= 0.900 n= 0.025, Flow Area= 1.77 sf Primary OutFlow Max=43.17 cfs @ 12.05 hrs HW=399.55' (Free Discharge) L1=Culvert (Inlet Controls 43.17 cfs @ 24.43 fps) Existing Ponds Prepared by HP Inc. Pond 4P: Existing SWM #1 Hydrograph Time (hours) Type // 24-hr 1-yr Rainfall=2.97" Printed 9/6/2022 ■ h fim— ■ Primary Existing Ponds Prepared by HP Inc. Type // 24-hr 1-yr Rainfall=2.97" Printed 9/6/2022 Summary for Pond 5P: Forebay 1 [92] Warning: Device #1 is above defined storage [93] Warning: Storage range exceeded by 167.33' Inflow Area = 20.600 ac, 0.00% Impervious, Inflow Depth > 1.00" for 1-yr event Inflow = 31.97 cfs @ 12.05 hrs, Volume= 1.722 of Outflow = 31.97 cfs @ 12.05 hrs, Volume= 1.722 af, Atten= 0%, Lag= 0.0 min Primary = 31.97 cfs @ 12.05 hrs, Volume= 1.722 of Routed to Pond 4P : Existing SWM #1 Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 360.25' Surf.Area= 6,188 sf Storage= 10,934 cf Peak Elev= 527.33' @ 12.05 hrs Surf.Area= 6,188 sf Storage= 10,934 cf Plug -Flow detention time= 62.5 min calculated for 1.466 of (85% of inflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Volume Invert Avail.Storage Storage Description #1 358.00' 10,934 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 358.00 4,746 0 0 360.00 6,188 10,934 10,934 Device Routino Invert Outlet Devices #1 Primary 360.25' 12.0" Round Culvert L= 40.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 360.25' / 358.00' S= 0.0563 '/' Cc= 0.900 n= 0.025, Flow Area= 0.79 sf Primary OutFlow Max=31.71 cfs @ 12.05 hrs HW=524.67' (Free Discharge) t1=Culvert (Barrel Controls 31.71 cfs @ 40.38 fps) Existing Ponds Prepared by HP Inc. Pond 512: Forebay 7 Hydrograph Time (hours) Type // 24-hr 1-yr Rainfall=2.97" Printed 9/6/2022 ■ Inflow ■ Primary Existing Ponds Prepared by HP Inc. Type // 24-hr 1-yr Rainfall=2.97" Printed 9/6/2022 Summary for Pond 7P: Existing SWM #3 - Retention Inflow Area = 7.850 ac, 0.00% Impervious, Inflow Depth > 0.96" for 1-yr event Inflow = 13.53 cfs @ 12.04 hrs, Volume= 0.627 of Outflow = 1.70 cfs @ 12.50 hrs, Volume= 0.517 af, Atten= 87%, Lag= 27.7 min Primary = 1.70 cfs @ 12.50 hrs, Volume= 0.517 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 368.50' Surf.Area= 23,910 sf Storage= 95,248 cf Peak Elev= 369.00' @ 12.50 hrs Surf.Area= 24,587 sf Storage= 107,347 cf (12,100 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 79.3 min ( 890.1 - 810.8 ) Volume Invert Avail.Storage Storage Description #1 364.00' 132,639 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 364.00 18,556 0 0 366.00 20,837 39,393 39,393 368.00 23,232 44,069 83,462 370.00 25,945 49,177 132,639 Device Routing Invert Outlet Devices #1 Primary 368.50' 6.0" Round Culvert L= 60.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 368.50' / 367.00' S= 0.0250 '/' Cc= 0.900 n= 0.025, Flow Area= 0.20 sf #2 Primary 368.50' 30.0" Round Culvert L= 60.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 368.50' / 367.00' S= 0.0250 '/' Cc= 0.900 n= 0.025, Flow Area= 4.91 sf Primary OutFlow Max=1.70 cfs @ 12.50 hrs HW=369.00' (Free Discharge) �1=Culvert (Inlet Controls 0.37 cfs @ 1.90 fps) 2=Culvert (Inlet Controls 1.32 cfs @ 1.90 fps) Existing Ponds Prepared by HP Inc. Type 1124-hr 1-yrRainfall=2.97" Printed 9/6/2022 Pond 7P: Existing SWM #3 - Retention Hydrograph Time (houm) ■ Inflow ■ Primary Existing Ponds Prepared by HP Inc. Type // 24-hr 1-yr Rainfall=2.97" Printed 9/6/2022 Summary for Pond 8P: Existing SWM #4 - Rte. 250 Inflow Area = 6.040 ac, 0.00% Impervious, Inflow Depth > 1.12" for 1-yr event Inflow = 10.47 cfs @ 12.04 hrs, Volume= 0.562 of Outflow = 1.91 cfs @ 12.41 hrs, Volume= 0.480 af, Atten= 82%, Lag= 21.8 min Primary = 1.91 cfs @ 12.41 hrs, Volume= 0.480 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 370.25' Surf.Area= 13,714 sf Storage= 28,242 cf Peak Elev= 371.03' @ 12.41 hrs Surf.Area= 14,552 sf Storage= 39,246 cf (11,004 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 73.2 min ( 875.5 - 802.2 ) Volume Invert Avail.Storage Storage Description #1 368.00' 53,889 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 368.00 11,402 0 0 370.00 13,445 24,847 24,847 372.00 15,597 29,042 53,889 Device Routino Invert Outlet Devices #1 Primary 370.25' 15.0" Round Culvert L= 100.0' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 370.25' / 364.00' S= 0.0625 '/' Cc= 0.900 n= 0.025 Corrugated metal, Flow Area= 1.23 sf Primary OutFlow Max=1.91 cfs @ 12.41 hrs HW=371.03' (Free Discharge) t1=Culvert (Inlet Controls 1.91 cfs @ 2.37 fps) Existing Ponds Prepared by HP Inc. 1 Type // 24-hr 1-yr Rainfall=2.97" Printed 9/6/2022 Pond 812: Existing SWM #4 - Rte. 250 Hydrograph --------------- EMMMMMMUMMMMOMM EE e[C e[i i ....... ■M" - • 1 1 1 rage= pill ....... ■. Pea FSto ....... ■ WOMOMME N !E� i ...-... ■..0,�ORMIX OMMMMM■ SWOON in 1 1 TI Cep ......, ■.-..NI"M eCi Y ......, i UM-.MM.. "M Mmmmwwrmill lk -- --- -- — -- — 0-r 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) ■ Inflow ■ Primary Existing Ponds Prepared by HP Inc. Type // 24-hr 1-yr Rainfall=2.97" Printed 9/6/2022 Summary for Pond 9P: Forebay 3 [93] Warning: Storage range exceeded by 30.15' [88] Warning: Qout>Qin may require smaller dt or Finer Routing [85] Warning: Oscillations may require smaller dt or Finer Routing (severity=70) Inflow Area = 7.850 ac, 0.00% Impervious, Inflow Depth > 1.00" for 1-yr event Inflow = 13.02 cfs @ 12.02 hrs, Volume= 0.657 of Outflow = 13.53 cfs @ 12.04 hrs, Volume= 0.627 af, Atten= 0%, Lag= 0.8 min Primary = 13.53 cfs @ 12.04 hrs, Volume= 0.627 of Routed to Pond 7P : Existing SWM #3 - Retention Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 375.75' Surf.Area= 5,090 sf Storage= 8,022 cf Peak Elev= 406.15' @ 12.04 hrs Surf.Area= 5,235 sf Storage= 9,313 cf (1,291 cf above start) Plug -Flow detention time= 119.5 min calculated for 0.442 of (67% of inflow) Center -of -Mass det. time= 5.4 min ( 810.8 - 805.4 ) Volume Invert Avail.Storage Storage Description #1 374.00' 9,313 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 374.00 4,078 0 0 376.00 5,235 9,313 9,313 Device Routing Invert Outlet Devices #1 Primary 375.75' 12.0" Round Culvert L= 50.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 375.75' / 370.00' S= 0.1150 '/' Cc= 0.900 n= 0.025, Flow Area= 0.79 sf Primary OutFlow Max=12.94 cfs @ 12.04 hrs HW=403.49' (Free Discharge) t1=Culvert (Barrel Controls 12.94 cfs @ 16.48 fps) Existing Ponds Prepared by HP Inc. Pond 9P: Forebay 3 Hydrograph Time (houm) Type 1124-hr 1-yrRainlall=2.97" Printed 9/6/2022 ■ Inflow ■ Primary Existing Ponds Prepared by HP Inc. Type 11 24-hr 2-yr Rainfall=3.59" Printed 9/6/2022 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 10S: Post #4 Runoff Area=6.040 ac 0.00% Impervious Runoff Depth>1.57" Flow Length=450' Tc=12.0 min CN=80 Runoff=14.65 cfs 0.788 of Subcatchment 11S: Existing Runoff Area=20.600 ac 0.00% Impervious Runoff Depth>1.43" Tc=12.0 min CN=78 Runoff=45.69 cfs 2.454 of Subcatchment 12S: Existing Runoff Area=7.850 ac 0.00% Impervious Runoff Depth>1.43" Tc=10.0 min CN=78 Runoff=18.59 cfs 0.936 of Pond 4P: Existing SWIM #1 Peak Elev=434.31' Storage=93,979 cf Inflow=45.69 cfs 2.454 of 18.0" Round Culvert n=0.025 L=40.0' S=0.1125 7' Outflow=58.60 cfs 2.172 of Pond 5P: Forebay 1 Peak EIev=702.71' Storage=10,934 cf Inflow=45.69 cfs 2.454 of 12.0" Round Culvert n=0.025 L=40.0' S=0.0563'/' Outflow=45.69 cfs 2.454 of Pond 7P: Existing SWIM #3 - Retention Peak EIev=369.22' Storage=112,835 cf Inflow=18.87 cfs 0.906 of Outflow=3.15 cfs 0.780 of Pond 8P: Existing SWIM #4 - Rte. 250 Peak EIev=371.33' Storage=43,608 cf Inflow=14.65 cfs 0.788 of 15.0" Round Culvert n=0.025 L=100.0' S=0.06257 Outflow=3.13 cfs 0.695 of Pond 9P: Forebay 3 Peak EIev=439.31' Storage=9,313 cf Inflow=18.59 cfs 0.936 of 12.0" Round Culvert n=0.025 L=50.0' S=0.1150 T Outflow=18.87 cfs 0.906 of Total Runoff Area = 34.490 ac Runoff Volume = 4.177 of Average Runoff Depth = 1.45" 100.00% Pervious = 34.490 ac 0.00% Impervious = 0.000 ac Existing Ponds Prepared by HP Inc. Type 11 24-hr 2-yr Rainfall=3.59" Printed 9/6/2022 Summary for Subcatchment 10S: Post #4 Runoff = 14.65 cfs @ 12.04 hrs, Volume= 0.788 af, Depth> 1.57" Routed to Pond 8P : Existing SWM #4 - Rte. 250 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 2-yr Rainfall=3.59" Area (ac) CN 6.040 80 6.040 100.00% Pervious Area Tc Length Slope Velocity Capacity Description 9.7 150 0.0400 0.26 Sheet Flow, Grass: Short n= 0.150 P2= 3.59" 2.3 300 0.1000 2.21 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fos 12.0 450 Total w 0 Subcatchment 10S: Post #4 Hydrograph MMMMM MMMMW IMIMMMMMMM � .. , MM MM MMMM MM. MM MM MM 9 .1,6, .1,1, .1,2. .1,3. .1,4. .1,5. 1, , 6 17 18 19 20 Time (hours) ■ Rurwff Existing Ponds Prepared by HP Inc. Type 11 24-hr 2-yr Rainfall=3.59" Printed 9/6/2022 Summary for Subcatchment 11S: Existing Runoff = 45.69 cfs @ 12.04 hrs, Volume= 2.454 af, Depth> 1.43" Routed to Pond 5P : Forebay 1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 2-yr Rainfall=3.59" Area (ac) CN 20.600 78 20.600 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment 11S: Existing Hydrograph ❑ RunoH Time (hours) Existing Ponds Prepared by HP Inc. Type 11 24-hr 2-yr Rainfall=3.59" Printed 9/6/2022 M--- 1J Summary for Subcatchment 12S: Existing Runoff = 18.59 cfs @ 12.02 hrs, Volume= 0.936 af, Depth> 1.43" Routed to Pond 9P : Forebay 3 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 2-yr Rainfall=3.59" Area (ac) CN Description 7.850 78 7.850 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 12S: Existing Hydrograph ■ Rurwff 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Existing Ponds Prepared by HP Inc. Type 11 24-hr 2-yr Rainfall=3.59" Printed 9/6/2022 Summary for Pond 4P: Existing SWM #1 [93] Warning: Storage range exceeded by 76.31' [88] Warning: Qout>Qin may require smaller dt or Finer Routing [85] Warning: Oscillations may require smaller dt or Finer Routing (severity=50) [79] Warning: Submerged Pond 5P Primary device # 1 INLET by 74.05' Inflow Area = 20.600 ac, 0.00% Impervious, Inflow Depth > 1.43" for 2-yr event Inflow = 45.69 cfs @ 12.04 hrs, Volume= 2.454 of Outflow = 58.60 cfs @ 12.05 hrs, Volume= 2.172 af, Atten= 0%, Lag= 0.3 min Primary = 58.60 cfs @ 12.05 hrs, Volume= 2.172 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 357.50' Surf.Area= 25,454 sf Storage= 81,087 cf Peak Elev= 434.31' @ 12.05 hrs Surf.Area= 26,115 sf Storage= 93,979 cf (12,892 cf above start) Plug -Flow detention time= 392.6 min calculated for 0.309 of (13% of inflow) Center -of -Mass det. time= 16.3 min ( 816.0 - 799.6 ) Volume Invert Avail.Storage Storage Description #1 354.00' 93,979 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 354.00 20,926 0 0 356.00 23,469 44,395 44,395 358.00 26,115 49,584 93,979 Device Routing Invert Outlet Devices #1 Primary 357.50' 18.0" Round Culvert L= 40.0' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 357.50' / 353.00' S= 0.1125 '/' Cc= 0.900 n= 0.025, Flow Area= 1.77 sf Primary OutFlow Max=58.09 cfs @ 12.05 hrs HW=433.02' (Free Discharge) L1=Culvert (Inlet Controls 58.09 cfs @ 32.87 fps) Existing Ponds Prepared by HP Inc. Pond 4P: Existing SWM #1 Hydrograph Time (hours) Type /l 24-hr 2-yr Rainfall=3.59" Printed 9/6/2022 ■ h fim— ■ Primary Existing Ponds Prepared by HP Inc. Type 11 24-hr 2-yr Rainfall=3.59" Printed 9/6/2022 Summary for Pond 5P: Forebay 1 [92] Warning: Device #1 is above defined storage [93] Warning: Storage range exceeded by 342.71' Inflow Area = 20.600 ac, 0.00% Impervious, Inflow Depth > 1.43" for 2-yr event Inflow = 45.69 cfs @ 12.04 hrs, Volume= 2.454 of Outflow = 45.69 cfs @ 12.04 hrs, Volume= 2.454 af, Atten= 0%, Lag= 0.0 min Primary = 45.69 cfs @ 12.04 hrs, Volume= 2.454 of Routed to Pond 4P : Existing SWM #1 Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 360.25' Surf.Area= 6,188 sf Storage= 10,934 cf Peak Elev= 702.71' @ 12.04 hrs Surf.Area= 6,188 sf Storage= 10,934 cf Plug -Flow detention time= 46.6 min calculated for 2.195 of (89% of inflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Volume Invert Avail.Storage Storage Description #1 358.00' 10,934 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 358.00 4,746 0 0 360.00 6,188 10,934 10,934 Device Routino Invert Outlet Devices #1 Primary 360.25' 12.0" Round Culvert L= 40.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 360.25' / 358.00' S= 0.0563 '/' Cc= 0.900 n= 0.025, Flow Area= 0.79 sf Primary OutFlow Max=45.11 cfs @ 12.04 hrs HW=694.30' (Free Discharge) t1=Culvert (Barrel Controls 45.11 cfs @ 57.44 fps) Existing Ponds Prepared by HP Inc. Pond 512: Forebay 7 Hydrograph Time (hours) Type /l 24-hr 2-yr Rainfall=3.59" Printed 9/6/2022 ■ Inflow ■ Primary Existing Ponds Prepared by HP Inc. Type 11 24-hr 2-yr Rainfall=3.59" Printed 9/6/2022 Summary for Pond 7P: Existing SWM #3 - Retention Inflow Area = 7.850 ac, 0.00% Impervious, Inflow Depth > 1.38" for 2-yr event Inflow = 18.87 cfs @ 12.03 hrs, Volume= 0.906 of Outflow = 3.15 cfs @ 12.35 hrs, Volume= 0.780 af, Atten= 83%, Lag= 19.4 min Primary = 3.15 cfs @ 12.35 hrs, Volume= 0.780 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 368.50' Surf.Area= 23,910 sf Storage= 95,248 cf Peak Elev= 369.22' @ 12.35 hrs Surf.Area= 24,888 sf Storage= 112,835 cf (17,588 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 70.7 min ( 873.1 - 802.4 ) Volume Invert Avail.Storage Storage Description #1 364.00' 132,639 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 364.00 18,556 0 0 366.00 20,837 39,393 39,393 368.00 23,232 44,069 83,462 370.00 25,945 49,177 132,639 Device Routing Invert Outlet Devices #1 Primary 368.50' 6.0" Round Culvert L= 60.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 368.50' / 367.00' S= 0.0250 '/' Cc= 0.900 n= 0.025, Flow Area= 0.20 sf #2 Primary 368.50' 30.0" Round Culvert L= 60.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 368.50' / 367.00' S= 0.0250 '/' Cc= 0.900 n= 0.025, Flow Area= 4.91 sf Primary OutFlow Max=3.14 cfs @ 12.35 hrs HW=369.22' (Free Discharge) �1=Culvert (Barrel Controls 0.47 cfs @ 2.39 fps) 2=Culvert (Inlet Controls 2.67 cfs @ 2.28 fps) Existing Ponds Prepared by HP Inc. Type // 24-hr 2-yr Rainfall=3.59" Printed 9/6/2022 Pond 7P: Existing SWM #3 - Retention Hydrograph Time (hours) ■ Inflow ■ Primary Existing Ponds Prepared by HP Inc. Type 11 24-hr 2-yr Rainfall=3.59" Printed 9/6/2022 Summary for Pond 8P: Existing SWM #4 - Rte. 250 Inflow Area = 6.040 ac, 0.00% Impervious, Inflow Depth > 1.57" for 2-yr event Inflow = 14.65 cfs @ 12.04 hrs, Volume= 0.788 of Outflow = 3.13 cfs @ 12.34 hrs, Volume= 0.695 af, Atten= 79%, Lag= 18.0 min Primary = 3.13 cfs @ 12.34 hrs, Volume= 0.695 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 370.25' Surf.Area= 13,714 sf Storage= 28,242 cf Peak Elev= 371.33' @ 12.34 hrs Surf.Area= 14,871 sf Storage= 43,608 cf (15,366 cf above start) Plug -Flow detention time= 488.3 min calculated for 0.046 of (6% of inflow) Center -of -Mass det. time= 66.9 min ( 862.2 - 795.2 ) Volume Invert Avail.Storage Storage Description #1 368.00' 53,889 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 368.00 11,402 0 0 370.00 13,445 24,847 24,847 372.00 15,597 29,042 53,889 Device Routino Invert Outlet Devices #1 Primary 370.25' 15.0" Round Culvert L= 100.0' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 370.25' / 364.00' S= 0.0625 '/' Cc= 0.900 n= 0.025 Corrugated metal, Flow Area= 1.23 sf Primary OutFlow Max=3.13 cfs @ 12.34 hrs HW=371.32' (Free Discharge) t1=Culvert (Inlet Controls 3.13 cfs @ 2.79 fps) Existing Ponds Prepared by HP Inc. Type // 24-hr 2-yr Rainfall=3.59" Printed 9/6/2022 Pond 812: Existing SWM #4 - Rte. 250 Hydrograph Time (hours) ■ Inflow ■ Primary Existing Ponds Prepared by HP Inc. Type 11 24-hr 2-yr Rainfall=3.59" Printed 9/6/2022 Summary for Pond 9P: Forebay 3 [93] Warning: Storage range exceeded by 63.31' [88] Warning: Qout>Qin may require smaller dt or Finer Routing [85] Warning: Oscillations may require smaller dt or Finer Routing (severity=76) Inflow Area = 7.850 ac, 0.00% Impervious, Inflow Depth > 1.43" for 2-yr event Inflow = 18.59 cfs @ 12.02 hrs, Volume= 0.936 of Outflow = 18.87 cfs @ 12.03 hrs, Volume= 0.906 af, Atten= 0%, Lag= 0.7 min Primary = 18.87 cfs @ 12.03 hrs, Volume= 0.906 of Routed to Pond 7P : Existing SWM #3 - Retention Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 375.75' Surf.Area= 5,090 sf Storage= 8,022 cf Peak Elev= 439.31' @ 12.03 hrs Surf.Area= 5,235 sf Storage= 9,313 cf (1,291 cf above start) Plug -Flow detention time= 88.8 min calculated for 0.719 of (77% of inflow) Center -of -Mass det. time= 4.3 min ( 802.4 - 798.1 ) Volume Invert Avail.Storage Storage Description #1 374.00' 9,313 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 374.00 4,078 0 0 376.00 5,235 9,313 9,313 Device Routing Invert Outlet Devices #1 Primary 375.75' 12.0" Round Culvert L= 50.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 375.75' / 370.00' S= 0.1150 '/' Cc= 0.900 n= 0.025, Flow Area= 0.79 sf Primary OutFlow Max=18.10 cfs @ 12.03 hrs HW=434.54' (Free Discharge) t1=Culvert (Barrel Controls 18.10 cfs @ 23.04 fps) Existing Ponds Prepared by HP Inc. Pond 912: Forebay 3 Hydrograph Time (hours) Type // 24-hr 2-yr Rainfall=3.59" Printed 9/6/2022 ■ Infim— ■ Primary Existing Ponds Prepared by HP Inc. Type II 24-hr 10-yr Rainfall=5.43" Printed 9/6/2022 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 10S: Post #4 Runoff Area=6.040 ac 0.00% Impervious Runoff Depth>3.03" Flow Length=450' Tc=12.0 min CN=80 Runoff=27.86 cfs 1.526 of Subcatchment 11S: Existing Runoff Area=20.600 ac 0.00% Impervious Runoff Depth>2.85" Tc=12.0 min CN=78 Runoff=89.83 cfs 4.886 of Subcatchment 12S: Existing Runoff Area=7.850 ac 0.00% Impervious Runoff Depth>2.85" Tc=10.0 min CN=78 Runoff=36.49 cfs 1.863 of Pond 4P: Existing SWIM #1 Peak EIev=531.07' Storage=93,979 cf Inflow=89.83 cfs 4.886 of 18.0" Round Culvert n=0.025 L=40.0' S=0.1125 7' Outflow=87.87 cfs 4.591 of Pond 5P: Forebay 1 Peak EIev=1,686.25' Storage=10,934 cf Inflow=89.83 cfs 4.886 of 12.0" Round Culvert n=0.025 L=40.0' S=0.0563'/' Outflow=89.83 cfs 4.886 of Pond 7P: Existing SWIM #3 - Retention Peak EIev=369.91' Storage=130,401 cf Inflow=36.37 cfs 1.833 of Outflow=9.70 cfs 1.671 of Pond 8P: Existing SWIM #4 - Rte. 250 Peak EIev=446.59' Storage=53,889 cf Inflow=27.86 cfs 1.526 of 15.0" Round Culvert n=0.025 L=100.0' S=0.0625'/' Outflow=27.38 cfs 1.415 of Pond 9P: Forebay 3 Peak EIev=626.78' Storage=9,313 cf Inflow=36.49 cfs 1.863 of 12.0" Round Culvert n=0.025 L=50.0' S=0.1150 T Outflow=36.37 cfs 1.833 of Total Runoff Area = 34.490 ac Runoff Volume = 8.275 of Average Runoff Depth = 2.88" 100.00% Pervious = 34.490 ac 0.00% Impervious = 0.000 ac Existing Ponds Prepared by HP Inc. Type II 24-hr 10-yr Rainfall=5.43" Printed 9/6/2022 Summary for Subcatchment 10S: Post #4 Runoff = 27.86 cfs @ 12.04 hrs, Volume= 1.526 af, Depth> 3.03" Routed to Pond 8P : Existing SWM #4 - Rte. 250 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=5.43" Area (ac) CN 6.040 80 6.040 100.00% Pervious Area Tc Length Slope Velocity Capacity Description 9.7 150 0.0400 0.26 Sheet Flow, Grass: Short n= 0.150 P2= 3.59" 2.3 300 0.1000 2.21 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fos 12.0 450 Total Subcatchment 10S: Post #4 Hydrograph Time (hours) ■ Rurwff Existing Ponds Prepared by HP Inc. Type II 24-hr 10-yr Rainfall=5.43" Printed 9/6/2022 ` M- -- I O Summary for Subcatchment 11S: Existing Runoff = 89.83 cfs @ 12.04 hrs, Volume= 4.886 af, Depth> 2.85" Routed to Pond 5P : Forebay 1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=5.43" Area (ac) CN Description 20.600 78 20.600 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment 11S: Existing Hydrograph M�� ■ Rurwff 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Existing Ponds Prepared by HP Inc. Type/1 24-hr 10-yr Rainfall=5.43" Printed 9/6/2022 Summary for Subcatchment 12S: Existing Runoff = 36.49 cfs @ 12.01 hrs, Volume= 1.863 af, Depth> 2.85" Routed to Pond 9P : Forebay 3 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=5.43" Area (ac) CN 7.850 78 7.850 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 12S: Existing Hydrograph ❑ RunoH Time (hours) Existing Ponds Prepared by HP Inc. Type II 24-hr 10-yr Rainfall=5.43" Printed 9/6/2022 Summary for Pond 4P: Existing SWM #1 [93] Warning: Storage range exceeded by 173.07' [85] Warning: Oscillations may require smaller dt or Finer Routing (severity=75) [79] Warning: Submerged Pond 5P Primary device # 1 INLET by 166.93' Inflow Area = 20.600 ac, 0.00% Impervious, Inflow Depth > 2.85" for 10-yr event Inflow = 89.83 cfs @ 12.04 hrs, Volume= 4.886 of Outflow = 87.87 cfs @ 12.03 hrs, Volume= 4.591 af, Atten= 2%, Lag= 0.0 min Primary = 87.87 cfs @ 12.03 hrs, Volume= 4.591 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 357.50' Surf.Area= 25,454 sf Storage= 81,087 cf Peak Elev= 531.07' @ 12.03 hrs Surf.Area= 26,115 sf Storage= 93,979 cf (12,892 cf above start) Plug -Flow detention time= 141.2 min calculated for 2.729 of (56% of inflow) Center -of -Mass det. time= 9.6 min ( 794.6 - 785.0 ) Volume Invert Avail.Storage Storage Description #1 354.00' 93,979 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 354.00 20,926 0 0 356.00 23,469 44,395 44,395 358.00 26,115 49,584 93,979 Device Routing Invert Outlet Devices #1 Primary 357.50' 18.0" Round Culvert L= 40.0' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 357.50' / 353.00' S= 0.1125 '/' Cc= 0.900 n= 0.025, Flow Area= 1.77 sf Primary OutFlow Max=86.75 cfs @ 12.03 hrs HW=526.82' (Free Discharge) t1=Culvert (Barrel Controls 86.75 cfs @ 49.09 fps) Existing Ponds Prepared by HP Inc. Pond 4P: Existing SWM #1 Hydrograph Time (hours) Type 11 24-hr 10-yr Rainfall=5.43" Printed 9/6/2022 ■ Infloa ■ Primary Existing Ponds Prepared by HP Inc. Type II 24-hr 10-yr Rainfall=5.43" Printed 9/6/2022 Summary for Pond 5P: Forebay 1 [92] Warning: Device #1 is above defined storage [93] Warning: Storage range exceeded by 1,326.25' Inflow Area = 20.600 ac, 0.00% Impervious, Inflow Depth > 2.85" for 10-yr event Inflow = 89.83 cfs @ 12.04 hrs, Volume= 4.886 of Outflow = 89.83 cfs @ 12.04 hrs, Volume= 4.886 af, Atten= 0%, Lag= 0.0 min Primary = 89.83 cfs @ 12.04 hrs, Volume= 4.886 of Routed to Pond 4P : Existing SWM #1 Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 360.25' Surf.Area= 6,188 sf Storage= 10,934 cf Peak Elev= 1,686.25' @ 12.04 hrs Surf.Area= 6,188 sf Storage= 10,934 cf Plug -Flow detention time= 28.3 min calculated for 4.620 of (95% of inflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Volume Invert Avail.Storage Storage Description #1 358.00' 10,934 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 358.00 4,746 0 0 360.00 6,188 10,934 10,934 Device Routino Invert Outlet Devices #1 Primary 360.25' 12.0" Round Culvert L= 40.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 360.25' / 358.00' S= 0.0563 '/' Cc= 0.900 n= 0.025, Flow Area= 0.79 sf Primary OutFlow Max=88.19 cfs @ 12.04 hrs HW=1,640.26' (Free Discharge) t1=Culvert (Barrel Controls 88.19 cfs @ 112.28 fps) Existing Ponds Prepared by HP Inc. Pond 512: Forebay 7 Hydrograph Time (hours) Type 11 24-hr 10-yr Rainfall=5.43" Printed 9/6/2022 ■ Inflow ■ Primary Existing Ponds Prepared by HP Inc. Type II 24-hr 10-yr Rainfall=5.43" Printed 9/6/2022 Summary for Pond 7P: Existing SWM #3 - Retention Inflow Area = 7.850 ac, 0.00% Impervious, Inflow Depth > 2.80" for 10-yr event Inflow = 36.37 cfs @ 12.02 hrs, Volume= 1.833 of Outflow = 9.70 cfs @ 12.22 hrs, Volume= 1.671 af, Atten= 73%, Lag= 12.4 min Primary = 9.70 cfs @ 12.22 hrs, Volume= 1.671 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 368.50' Surf.Area= 23,910 sf Storage= 95,248 cf Peak Elev= 369.91' @ 12.22 hrs Surf.Area= 25,828 sf Storage= 130,401 cf (35,153 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 58.0 min ( 844.9 - 786.9 ) Volume Invert Avail.Storage Storage Description #1 364.00' 132,639 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 364.00 18,556 0 0 366.00 20,837 39,393 39,393 368.00 23,232 44,069 83,462 370.00 25,945 49,177 132,639 Device Routing Invert Outlet Devices #1 Primary 368.50' 6.0" Round Culvert L= 60.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 368.50' / 367.00' S= 0.0250 '/' Cc= 0.900 n= 0.025, Flow Area= 0.20 sf #2 Primary 368.50' 30.0" Round Culvert L= 60.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 368.50' / 367.00' S= 0.0250 '/' Cc= 0.900 n= 0.025, Flow Area= 4.91 sf Primary OutFlow Max=9.66 cfs @ 12.22 hrs HW=369.91' (Free Discharge) �1=Culvert (Barrel Controls 0.55 cfs @ 2.82 fps) 2=Culvert (Inlet Controls 9.11 cfs @ 3.19 fps) Existing Ponds Prepared by HP Inc. Type 11 24-hr 10-yr Rainfall=5.43" Printed 9/6/2022 Pond 7P: Existing SWM #3 - Retention Hydrograph Time (hours) ■ Inflow ■ Primary Existing Ponds Prepared by HP Inc. Type II 24-hr 10-yr Rainfall=5.43" Printed 9/6/2022 Summary for Pond 8P: Existing SWM #4 - Rte. 250 [93] Warning: Storage range exceeded by 74.59' Inflow Area = 6.040 ac, 0.00% Impervious, Inflow Depth > 3.03" for 10-yr event Inflow = 27.86 cfs @ 12.04 hrs, Volume= 1.526 of Outflow = 27.38 cfs @ 12.15 hrs, Volume= 1.415 af, Atten= 2%, Lag= 6.7 min Primary = 27.38 cfs @ 12.15 hrs, Volume= 1.415 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 370.25' Surf.Area= 13,714 sf Storage= 28,242 cf Peak Elev= 446.59' @ 12.15 hrs Surf.Area= 15,597 sf Storage= 53,889 cf (25,647 cf above start) Plug -Flow detention time= 220.4 min calculated for 0.767 of (50% of inflow) Center -of -Mass det. time= 58.5 min ( 839.5 - 781.0 ) Volume Invert Avail.Storage Storage Description #1 368.00' 53,889 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 368.00 11,402 0 0 370.00 13,445 24,847 24,847 372.00 15,597 29,042 53,889 Device Routing Invert Outlet Devices #1 Primary 370.25' 15.0" Round Culvert L= 100.0' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 370.25' / 364.00' S= 0.0625 '/' Cc= 0.900 n= 0.025 Corrugated metal, Flow Area= 1.23 sf Primary OutFlow Max=27.37 cfs @ 12.15 hrs HW=446.56' (Free Discharge) L1=Culvert (Barrel Controls 27.37 cfs @ 22.31 fps) Existing Ponds Prepared by HP Inc. Type ll24-hr 10-yrRainfall=5.43- Printed 9/6/2022 Pond 812: Existing SWM #4 - Rte. 250 Hydrograph Time (hours) ■ Inflow ■ Primary Existing Ponds Prepared by HP Inc. Type II 24-hr 10-yr Rainfall=5.43" Printed 9/6/2022 Summary for Pond 9P: Forebay 3 [93] Warning: Storage range exceeded by 250.78' [85] Warning: Oscillations may require smaller dt or Finer Routing (severity=79) Inflow Area = 7.850 ac, 0.00% Impervious, Inflow Depth > 2.85" for 10-yr event Inflow = 36.49 cfs @ 12.01 hrs, Volume= 1.863 of Outflow = 36.37 cfs @ 12.02 hrs, Volume= 1.833 af, Atten= 0%, Lag= 0.1 min Primary = 36.37 cfs @ 12.02 hrs, Volume= 1.833 of Routed to Pond 7P : Existing SWM #3 - Retention Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 375.75' Surf.Area= 5,090 sf Storage= 8,022 cf Peak Elev= 626.78' @ 12.02 hrs Surf.Area= 5,235 sf Storage= 9,313 cf (1,291 cf above start) Plug -Flow detention time= 53.7 min calculated for 1.644 of (88% of inflow) Center -of -Mass det. time= 3.4 min ( 786.9 - 783.4 ) Volume Invert Avail.Storage Storage Description #1 374.00' 9,313 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 374.00 4,078 0 0 376.00 5,235 9,313 9,313 Device Routino Invert Outlet Devices #1 Primary 375.75' 12.0" Round Culvert L= 50.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 375.75' / 370.00' S= 0.1150 '/' Cc= 0.900 n= 0.025, Flow Area= 0.79 sf Primary OutFlow Max=35.53 cfs @ 12.02 hrs HW=615.85' (Free Discharge) t1=Culvert (Barrel Controls 35.53 cfs @ 45.24 fps) Existing Ponds Prepared by HP Inc. Pond 9P: Forebay 3 Hydrograph Time (houm) Type 11 24-hr 10-yr Rainfall=5.43" Printed 9/6/2022 ■ Inflow ■ Primary Existing Ponds Type 1124-hr 100-yrRaintall=8.90" Prepared by HP Inc. Printed 9/6/2022 HVdroCAD® 10.10-7c s/n 08126 © 2022 HVdroCAD Software Solutions LLC Paoe 60 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 10S: Post #4 Runoff Area=6.040 ac 0.00% Impervious Runoff Depth>6.05" Flow Length=450' Tc=12.0 min CN=80 Runoff=53.68 cfs 3.046 of Subcatchment 11S: Existing Runoff Area=20.600 ac 0.00% Impervious Runoff Depth>5.81" Tc=12.0 min CN=78 Runoff=177.51 cfs 9.977 of Subcatchment 12S: Existing Runoff Area=7.850 ac 0.00% Impervious Runoff Depth>5.82" Tc=10.0 min CN=78 Runoff=72.02 cfs 3.804 of Pond 4P: Existing SWM #1 Peak EIev=1,087.09' Storage=93,979 cf Inflow=177.51 cfs 9.977 of 18.0" Round Culvert n=0.025 L=40.0' S=0.1125'/' Outflow=179.09 cfs 9.679 of Pond 5P: Forebay 1 Peak EIev=5,537.01' Storage=10,934 cf Inflow=177.51 cfs 9.977 of 12.0" Round Culvert n=0.025 L=40.0' S=0.0563'/' Outflow=177.51 cfs 9.977 of Pond 7P: Existing SWM #3 - Retention Peak EIev=401.81' Storage=132,639 cf Inflow=71.99 cfs 3.775 of Outflow=107.78 cfs 3.566 of Pond 8P: Existing SWM #4 - Rte. 250 Peak EIev=707.14' Storage=53,889 cf Inflow=53.68 cfs 3.046 of 15.0" Round Culvert n=0.025 L=100.0' S=0.0625'/' Outflow=56.36 cfs 2.892 of Pond 9P: Forebay 3 Peak EIev=1,374.43' Storage=9,313 cf Inflow=72.02 cfs 3.804 of 12.0" Round Culvert n=0.025 L=50.0' S=0.1150 7' Outflow=71.99 cfs 3.775 of Total Runoff Area = 34.490 ac Runoff Volume = 16.827 of Average Runoff Depth = 5.85" 100.00% Pervious = 34.490 ac 0.00% Impervious = 0.000 ac Existing Ponds Prepared by HP Inc. Type 1124-hr 100-yr Rainfall=8.90" Printed 9/6/2022 Summary for Subcatchment 10S: Post #4 Runoff = 53.68 cfs @ 12.03 hrs, Volume= 3.046 af, Depth> 6.05" Routed to Pond 8P : Existing SWM #4 - Rte. 250 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=8.90" Area (ac) CN 6.040 80 6.040 100.00% Pervious Area Tc Length Slope Velocity Capacity Description 9.7 150 0.0400 0.26 Sheet Flow, Grass: Short n= 0.150 P2= 3.59" 2.3 300 0.1000 2.21 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fos 12.0 450 Total Subcatchment 10S: Post #4 Hydrograph ' ..........M .... ® .. 8, 9 .10 „ .1,1,.1,2. .1,3. .1,4. .1,5. 1, 6 17 18 19 20 Time (hours) ■ Rurwff Existing Ponds Prepared by HP Inc. Type 1124-hr 100-yr Rainfall=8.90" Printed 9/6/2022 Summary for Subcatchment 11S: Existing Runoff = 177.51 cfs @ 12.03 hrs, Volume= 9.977 af, Depth> 5.81" Routed to Pond 5P : Forebay 1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=8.90" Area (ac) CN Description 20.600 78 20.600 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Subcatchment 11S: Existing Hydrograph ■ Rurwff 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Existing Ponds Prepared by HP Inc. Type 1124-hr 100-yr Rainfall=8.90" Printed 9/6/2022 Summary for Subcatchment 12S: Existing Runoff = 72.02 cfs @ 12.01 hrs, Volume= 3.804 af, Depth> 5.82" Routed to Pond 9P : Forebay 3 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=8.90" Area (ac) CN Description 7.850 78 7.850 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 12S: Existing Hydrograph ❑ Runoff 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Existing Ponds Prepared by HP Inc. Type 1124-hr 100-yr Rainfall=8.90" Printed 9/6/2022 Summary for Pond 4P: Existing SWM #1 [93] Warning: Storage range exceeded by 729.09' [88] Warning: Qout>Qin may require smaller dt or Finer Routing [85] Warning: Oscillations may require smaller dt or Finer Routing (severity=90) [79] Warning: Submerged Pond 5P Primary device # 1 INLET by 717.58' Inflow Area = 20.600 ac, 0.00% Impervious, Inflow Depth > 5.81" for 100-yr event Inflow = 177.51 cfs @ 12.03 hrs, Volume= 9.977 of Outflow = 179.09 cfs @ 12.04 hrs, Volume= 9.679 af, Atten= 0%, Lag= 0.2 min Primary = 179.09 cfs @ 12.04 hrs, Volume= 9.679 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 357.50' Surf.Area= 25,454 sf Storage= 81,087 cf Peak Elev= 1,087.09' @ 12.04 hrs Surf.Area= 26,115 sf Storage= 93,979 cf (12,892 cf above start) Plug -Flow detention time= 88.3 min calculated for 7.791 of (78% of inflow) Center -of -Mass det. time= 7.9 min ( 776.7 - 768.8 ) Volume Invert Avail.Storage Storage Description #1 354.00' 93,979 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 354.00 20,926 0 0 356.00 23,469 44,395 44,395 358.00 26,115 49,584 93,979 Device Routing Invert Outlet Devices #1 Primary 357.50' 18.0" Round Culvert L= 40.0' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 357.50' / 353.00' S= 0.1125 '/' Cc= 0.900 n= 0.025, Flow Area= 1.77 sf Primary OutFlow Max=175.07 cfs @ 12.04 hrs HW=1,056.35' (Free Discharge) L1=Culvert (Barrel Controls 175.07 cfs @ 99.07 fps) Existing Ponds Prepared by HP Inc. Pond 4P: Existing SWM #1 Hydrograph Time (hours) Type /I 24-hr 100-yr Rainfall=8.90" Printed 9/6/2022 ■ h fim— ■ Primary Existing Ponds Prepared by HP Inc. Type 1124-hr 100-yr Rainfall=8.90" Printed 9/6/2022 Summary for Pond 5P: Forebay 1 [92] Warning: Device #1 is above defined storage [93] Warning: Storage range exceeded by 5,177.01' Inflow Area = 20.600 ac, 0.00% Impervious, Inflow Depth > 5.81" for 100-yr event Inflow = 177.51 cfs @ 12.03 hrs, Volume= 9.977 of Outflow = 177.51 cfs @ 12.03 hrs, Volume= 9.977 af, Atten= 0%, Lag= 0.0 min Primary = 177.51 cfs @ 12.03 hrs, Volume= 9.977 of Routed to Pond 4P : Existing SWM #1 Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 360.25' Surf.Area= 6,188 sf Storage= 10,934 cf Peak Elev= 5,537.01' @ 12.04 hrs Surf.Area= 6,188 sf Storage= 10,934 cf Plug -Flow detention time= 17.9 min calculated for 9.726 of (97% of inflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Volume Invert Avail.Storage Storage Description #1 358.00' 10,934 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 358.00 4,746 0 0 360.00 6,188 10,934 10,934 Device Routino Invert Outlet Devices #1 Primary 360.25' 12.0" Round Culvert L= 40.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 360.25' / 358.00' S= 0.0563 '/' Cc= 0.900 n= 0.025, Flow Area= 0.79 sf Primary OutFlow Max=173.74 cfs @ 12.03 hrs HW=5,331.88' (Free Discharge) t1=Culvert (Barrel Controls 173.74 cfs @ 221.21 fps) Existing Ponds Prepared by HP Inc. Pond 5P: Forebay 7 Hydrograph Time (hours) Type I/ 24-hr 100-yr Rainfall=8.90" Printed 9/6/2022 ■ Inflow ■ Primary Existing Ponds Prepared by HP Inc. Type 1124-hr 100-yr Rainfall=8.90" Printed 9/6/2022 Summary for Pond 7P: Existing SWM #3 - Retention [93] Warning: Storage range exceeded by 31.81' [88] Warning: Qout>Qin may require smaller dt or Finer Routing [85] Warning: Oscillations may require smaller dt or Finer Routing (severity=l) [79] Warning: Submerged Pond 9P Primary device # 1 INLET by 26.06' Inflow Area = 7.850 ac, 0.00% Impervious, Inflow Depth > 5.77" for 100-yr event Inflow = 71.99 cfs @ 12.01 hrs, Volume= 3.775 of Outflow = 107.78 cfs @ 12.00 hrs, Volume= 3.566 af, Atten= 0%, Lag= 0.0 min Primary = 107.78 cfs @ 12.00 hrs, Volume= 3.566 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 368.50' Surf.Area= 23,910 sf Storage= 95,248 cf Peak Elev= 401.81' @ 12.00 hrs Surf.Area= 25,945 sf Storage= 132,639 cf (37,391 cf above start) Plug -Flow detention time= 255.4 min calculated for 1.379 of (37% of inflow) Center -of -Mass det. time= 39.2 min ( 809.1 - 769.9 ) Volume Invert Avail.Storage Storage Description #1 364.00' 132,639 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 364.00 18,556 0 0 366.00 20,837 39,393 39,393 368.00 23,232 44,069 83,462 370.00 25,945 49,177 132,639 Device Routino Invert Outlet Devices #1 Primary 368.50' 6.0" Round Culvert L= 60.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 368.50' / 367.00' S= 0.0250 '/' Cc= 0.900 n= 0.025, Flow Area= 0.20 sf #2 Primary 368.50' 30.0" Round Culvert L= 60.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 368.50' / 367.00' S= 0.0250 '/' Cc= 0.900 n= 0.025, Flow Area= 4.91 sf Primary OutFlow Max=106.63 cfs @ 12.00 hrs HW=401.15' (Free Discharge) �1=Culvert (Barrel Controls 2.07 cfs @ 10.55 fps) 2=Culvert (Inlet Controls 104.55 cfs @ 21.30 fps) Existing Ponds Prepared by HP Inc. Type 1124-hr 100-yr Rainfall=8.90" Printed 9/6/2022 Pond 7P: Existing SWM #3 - Retention Hydrograph Time (hours) ■ Inflow ■ Primary Existing Ponds Prepared by HP Inc. Type 1124-hr 100-yr Rainfall=8.90" Printed 9/6/2022 Summary for Pond 8P: Existing SWM #4 - Rte. 250 [93] Warning: Storage range exceeded by 335.14' [88] Warning: Qout>Qin may require smaller dt or Finer Routing [85] Warning: Oscillations may require smaller dt or Finer Routing (severity=2) Inflow Area = 6.040 ac, 0.00% Impervious, Inflow Depth > 6.05" for 100-yr event Inflow = 53.68 cfs @ 12.03 hrs, Volume= 3.046 of Outflow = 56.36 cfs @ 12.01 hrs, Volume= 2.892 af, Atten= 0%, Lag= 0.0 min Primary = 56.36 cfs @ 12.01 hrs, Volume= 2.892 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 370.25' Surf.Area= 13,714 sf Storage= 28,242 cf Peak Elev= 707.14' @ 12.01 hrs Surf.Area= 15,597 sf Storage= 53,889 cf (25,647 cf above start) Plug -Flow detention time= 136.8 min calculated for 2.236 of (73% of inflow) Center -of -Mass det. time= 42.2 min ( 807.3 - 765.1 ) Volume Invert Avail.Storage Storage Description #1 368.00' 53,889 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 368.00 11,402 0 0 370.00 13,445 24,847 24,847 372.00 15,597 29,042 53,889 Device Routing Invert Outlet Devices #1 Primary 370.25' 15.0" Round Culvert L= 100.0' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 370.25' / 364.00' S= 0.0625 '/' Cc= 0.900 n= 0.025 Corrugated metal, Flow Area= 1.23 sf Primary OutFlow Max=54.10 cfs @ 12.01 hrs HW=682.82' (Free Discharge) t1=Culvert (Barrel Controls 54.10 cfs @ 44.08 fps) Existing Ponds Prepared by HP Inc. Type /I 24-hr 100-yr Rainfall=8.90" Printed 9/6/2022 Pond 8P: Existing SWM #4 - Rte. 250 Hydrograph Time (houm) ■ InMoa ■ Primary Existing Ponds Prepared by HP Inc. Type 1124-hr 100-yr Rainfall=8.90" Printed 9/6/2022 Summary for Pond 9P: Forebay 3 [93] Warning: Storage range exceeded by 998.43' Inflow Area = 7.850 ac, 0.00% Impervious, Inflow Depth > 5.82" for 100-yr event Inflow = 72.02 cfs @ 12.01 hrs, Volume= 3.804 of Outflow = 71.99 cfs @ 12.01 hrs, Volume= 3.775 af, Atten= 0%, Lag= 0.0 min Primary = 71.99 cfs @ 12.01 hrs, Volume= 3.775 of Routed to Pond 7P : Existing SWM #3 - Retention Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 375.75' Surf.Area= 5,090 sf Storage= 8,022 cf Peak Elev= 1,374.43' @ 12.01 hrs Surf.Area= 5,235 sf Storage= 9,313 cf (1,291 cf above start) Plug -Flow detention time= 34.7 min calculated for 3.578 of (94% of inflow) Center -of -Mass det. time= 2.7 min ( 769.9 - 767.2 ) Volume Invert Avail.Storage Storage Description #1 374.00' 9,313 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 374.00 4,078 0 0 376.00 5,235 9,313 9,313 Device Routing Invert Outlet Devices #1 Primary 375.75' 12.0" Round Culvert L= 50.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 375.75' / 370.00' S= 0.1150 '/' Cc= 0.900 n= 0.025, Flow Area= 0.79 sf Primary OutFlow Max=70.61 cfs @ 12.01 hrs HW=1,338.08' (Free Discharge) L1=Culvert (Barrel Controls 70.61 cfs @ 89.90 fps) Existing Ponds Prepared by HP Inc. Pond 9P: Forebay 3 Hydrograph Time (houm) Type I/ 24-hr 100-yr Rainfall=8.90" Printed 9/6/2022 ■ Inflow ■ Primary