Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Proposed Drainage Calculations
CITY OF CHANHASSEN RECEIVED AUG 2 0 2010 CHANHASSEN PLAN1 ING DEPT SUB 1 TO DITCH SUB 8 OFF - SITE A 9Pv '9S 7S 7P 10S; MITIGATION AREA #1 SUB MIT AREA SE SUB SE �ND SE OFF -SITE 2S 6S v 6P s, A ,P CENTER OF SITE SW SUB SW POND 011S NORTH POND l 3S 4S 1 5�S SE OFF -SITE NE OFF -SITE NE OFF -SITE SE OFF -OSITE SubCat Reach Pon Link Drainage Diagram for PROPOSED 8 -11 -10 (TYPE C SOILS) Prepared by (enter your company name here) 8/20/2010 HydroCADO 7.00 s/n 000744 ©1986 -2003 Applied Microcomputer Systems PROPOSED 8 -11 -10 (TYPE C SOILS) Type 1124 -hr2 year Rainfall = 2.70" Prepared by {enter your company name here} Page 2 HydroCADO 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Time span =0.00- 100.00 hrs, dt =0.01 hrs, 10001 points Runoff by SCS TR -20 method, UH =SCS Reach routing by Sim -Route method - Pond routing by Sim -Route method Subcatchment 1S: SUB 1 TO DITCH RunoffArea= 13.380 ac Runoff Depth = 0.82" Flow Length =160' Tc =23.3 min CN =76 Runoff =10.33 cfs 0.913 of Subcatchment 2S: CENTER OF SITE Runoff Area = 22.260 ac Runoff Depth= 1.15" Flow Length =955' Tc =15.0 min CN =82 Runoff =32.88 cfs 2.128 of Subcatchment 3S: NE OFF -SITE Runoff Area =0.530 ac Runoff Depth= 1.48" Flow Length =70' Tc =10.4 min CN =87 Runoff =1.19 cfs 0.065 of Subcatchment 4S: NE OFFSITE Runoff Area =0.380 ac Runoff Depth= 1.63" Tc =3.0 min CN =89 Runoff =1.21 cfs 0.052 of Subcatchment 5S: SE OFF -OSITE Runoff Area =7.350 ac Runoff Depth = 0.64" Flow Length =300' Tc =44.0 min CN =72 Runoff =2.59 cfs 0.389 of Subcatchment 6S: SW SUB Runoff Area =2.280 ac Runoff Depth= 1.41" Tc =5.0 min CN =86 Runoff =5.94 cfs 0.268 of Subcatchment 7S: SE SUB Runoff Area =9.480 ac Runoff Depth= 1.21" Flow Length =560' Tc =11.0 min CN =83 Runoff =17.03 cfs 0.955 of Subcatchment 8S: SUB 8 OFF -SITE Runoff Area =1.300 ac Runoff Depth = 0.87" Flow Length =60' Tc =6.9 min CN =77 Runoff =1.93 cfs 0.094 of Subcatchment 9S: SUB MIT AREA Runoff Area =1.890 ac Runoff Depth= 1.03" Flow Length =160' Tc =11.9 min CN =80 Runoff =2.77 cfs 0.162 of Subcatchment 10S: SE OFF -SITE Runoff Area =0.880 ac Runoff Depth = 0.64" Tc =5.0 min CN =72 Runoff =0.99 cfs 0.047 of Subcatchment 11S: SE OFF -SITE RunoffArea =0.450 ac Runoff Depth = 0.97" Tc =5.0 min CN =79 Runoff =0.81 cfs 0.037 of Pond 2P: NORTH POND Peak Elev= 867.76' Storage =3.681 of Inflow =32.88 cfs 2.128 of Outflow =5.03 cfs 2.109 of Pond 6P: SW POND Peak Elev= 918.12' Storage =1.390 of Inflow =8.78 cfs 1.222 of Outflow =2.98 cfs 1.216 of Pond 7P: SE POND Peak Elev= 928.34' Storage =0.713 of Inflow =17.03 cfs 0.955 of Outflow =6.55 cfs 0.954 of Pond 9P: MITIGATION AREA #1 Peak Elev= 865.23' Storage =0.292 of Inflow =2.77 cfs 0.162 of Outflow =1.22 cfs 0.162 of PROPOSED 8 -11 -10 (TYPE C SOILS) Type 1124 -hr2 year Rainfall = 2.70" Prepared by {enter your company name here) Page 3 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Total Runoff Area= 60.180 ac Runoff Volume= 5.110 of Average Runoff Depth= 1.02" PROPOSED 8 -11 -10 (TYPE C SOILS) Type 1124 -hr2 year Rainfall= 2.70" Prepared by {enter your company name here) Page 4 HydroCADO 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 1S: SUB 1 TO DITCH Runoff = 10.33 cfs @ 12.19 hrs, Volume= 0.913 af, Depth= 0.82" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 2 year Rainfall= 2.70" Area (ac) CN Description 1.600 61 Pasture /grassland /range, Good, HSG B 5.170 85 Wetland 0.980 55 Woods, Good, HSG B 5.180 74 >75% Grass cover, Good, HSG C 0.450 98 Rooftops 13.380 76 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 23.3 160 0.0185 0.1 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" Subcatchment 1S: SUB 1 TO DITCH Hydrograph 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 2 year Rainfall= 2.70" Prepared by {enter your company name here} Page 5 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 2S: CENTER OF SITE Runoff = 32.88 cfs @ 12.08 hrs, Volume= 2.128 af, Depth= 1.15" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 2 year Rainfall= 2.70" Area (ac) CN Description 3.420 98 Rooftops 2.260 98 Roadway 1.300 98 Driveway 0.190 98 Sidewalk 0.680 98 Open water 14.410 74 >75% Grass cover, Good, HSG C 22.260 82 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.0 Direct Entry, Roof to yard 10.5 75 0.0300 0.1 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" 1.0 125 0.0200 2.1 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 2.5 755 5.0 Direct Entrv. Pine flow 0- 5 fps 15.0 955 Total Subcatchment 2S: CENTER OF SITE Hydrograph 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 2 year Rainfall= 2.70" Prepared by {enter your company name here} Page 6 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 3S: NE OFF -SITE Runoff = 1.19 cfs @ 12.02 hrs, Volume= 0.065 af, Depth= 1.48" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 2 year Rainfall= 2.70" Area (ac) CN Description 0.090 98 Rooftop 0.100 98 Roadway 0.080 98 Driveway 0.020 98 Sidewalk 0.240 74 >75% Grass cover, Good, HSG C 0.530 87 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.0 Direct Entry, Roof to yard 8.9 70 0.0400 0.1 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" 0.5 Direct Entrv. Gutter flow C- 3 fps 10.4 70 Total Runoff 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type// 24 -hr 2 year Rainfall = 2.70" Prepared by {enter your company name here} Page 7 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 4S: NE OFF -SITE Runoff = 1.21 cfs @ 11.94 hrs, Volume= 0.052 af, Depth= 1.63" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 2 year Rainfall= 2.70" Area (ac) CN Descriotion 0.170 98 Roadway 0.060 98 Sidewalk 0.150 74 >75% Grass cover, Good, HSG C 0.380 89 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.0 Direct Entry, Runoff 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type// 24 -hr 2 year Rainfall = 2.70" Prepared by {enter your company name here} Page 8 HydroCAD(D 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 5S: SE OFF -OSITE Runoff = 2.59 cfs @ 12.47 hrs, Volume= 0.389 af, Depth= 0.64" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 2 year Rainfall= 2.70" Area (ac) CN Description 0.950 55 Woods, Good, HSG B 6.400 74 >75% Grass cover, Good, HSG C 7.350 72 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 44.0 300 0.0133 0.1 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" iQ Runoff 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 1124 -hr2 year Rainfall = 2.70" Prepared by {enter your company name here} Page 9 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 6S: SW SUB Runoff = 5.94 cfs @ 11.96 hrs, Volume= 0.268 af, Depth= 1.41" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 2 year Rainfall= 2.70" Area (ac) CN Descri 0.460 98 Roadway 0.150 98 Sidewalk 0.340 98 Open water 1.140 74 >75% Grass cover, Good, HSG C 0.190 98 Parking lot 2.280 86 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Gutter flow @ 3 fps Runoff 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 2 year Rainfall = 2.70" Prepared by {enter your company name here} Page 10 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 7S: SE SUB Runoff = 17.03 cfs @ 12.03 hrs, Volume= 0.955 af, Depth= 1.21" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 2 year Rainfall= 2.70" Area (ac) CN Descri 1.410 98 Rooftop 1.090 98 Roadway 0.520 98 Driveway 0.160 98 Sidewalk 0.360 98 Open water 5.940 74 >75% Grass cover, Good, HSG C 9.480 83 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.5 55 0.0270 0.1 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" 1.3 160 0.0200 2.1 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 1.1 345 5.0 Direct Entrv. PIDe flow Cad 5 fps 11.0 560 Total Subcatchment 7S: SE SUB Hydrograph 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 24 -hr 2 year Rainfall =2.70" Prepared by {enter your company name here} Page 11 HydroCAD® 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 8S: SUB 8 OFF -SITE Runoff = 1.93 cfs @ 11.99 hrs, Volume= 0.094 af, Depth= 0.87" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 2 year Rainfall= 2.70" Area (ac) CN Description 1.120 74 >75% Grass cover, Good, HSG C 0.180 98 Rooftop 1.300 77 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.0 Direct Entry, Roof to yard 5.9 60 0.0800 0.2 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" .• 60 Total Subcatchment 8S: SUB 8 OFF -SITE Hydrograph � Runoff N w V 0 1 LL 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 1124 -hr2 year Rainfall= 2.70" Prepared by {enter your company name here} Page 12 HydroCADO 7.00 s/n 000744 C 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 9S: SUB MIT AREA Runoff = 2.77 cfs @ 12.04 hrs, Volume= 0.162 af, Depth= 1.03" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 2 year Rainfall= 2.70" Area (ac) CN Description 1.380 74 >75% Grass cover, Good, HSG C 0.090 98 Rooftop 0.420 98 Mitiqation Wetland 1.890 80 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.0 Direct Entry, Roof to yard 10.9 160 0.1250 0.2 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" 11.9 160 Total Subcatchment 9S: SUB MIT AREA Hydrograph Runoff N V 3 O LL 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 2 year Rainfall= 2.70" Prepared by {enter your company name here} Page 13 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 10S: SE OFF -SITE Runoff = 0.99 cfs @ 11.97 hrs, Volume= 0.047 af, Depth= 0.64" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 2 year Rainfall= 2.70" Area (ac) CN Description 0.250 98 IMPERVIOUS 0.630 61 >75% Grass cover, Good, HSG B 0.880 72 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, � Runoff 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type // 24 -hr 2 year Rainfall= 2.70" Prepared by {enter your company name here} Page 14 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 11S: SE OFF -SITE Runoff = 0.81 cfs @ 11.97 hrs, Volume= 0.037 af, Depth= 0.97" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 2 year Rainfall= 2.70" Area (ac) CN Description 0.220 98 IMPERVIOUS 0.230 61 >75% Grass cover, Good, HSG B 0.450 79 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 11S: SE OFF -SITE Hydrograph 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 1124 -hr2 year Rainfall = 2.70" Prepared by {enter your company name here) Page 15 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 866.50' Surf.Area= 0.690 ac Storage= 2.745 of Peak Elev= 867.76'@ 12.59 hrs Surf.Area= 0.774 ac Storage= 3.681 of (0.936 of above start) Plug -Flow detention time= (not calculated) Center -of -Mass det. time= (not calculated) # Invert Avail.Storage Pond 2P: NORTH POND Inflow Area = 22.260 ac, Inflow Depth= 1.15" for 2 year event Inflow = 32.88 cfs @ 12.08 hrs, Volume= 2.128 of Outflow = 5.03 cfs @ 12.59 hrs, Volume= 2.109 af, Atten= 85 %, Lag= 30.7 min Primary = 5.03 cfs @ 12.59 hrs, Volume= 2.109 of Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 866.50' Surf.Area= 0.690 ac Storage= 2.745 of Peak Elev= 867.76'@ 12.59 hrs Surf.Area= 0.774 ac Storage= 3.681 of (0.936 of above start) Plug -Flow detention time= (not calculated) Center -of -Mass det. time= (not calculated) # Invert Avail.Storage Storage Description 1 858.00' 6.595 of Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre -feet) (acre -feet) 858.00 0.140 0.000 0.000 860.00 0.210 0.350 0.350 862.00 0.280 0.490 0.840 864.00 0.370 0.650 1.490 866.00 0.570 0.940 2.430 866.50 0.690 0.315 2.745 868.00 0.790 1.110 3.855 870.00 0.950 1.740 5.595 871.00 1.050 1.000 6.595 # Routing Invert Outlet Devices 1 Primary 866.50' 18.0" x 21.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 866.30' S= 0.0095? n= 0.013 Cc= 0.900 2 Device 1 864.00' 15.0" x 30.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 864.30' S=-0.0100'/' n=0.013 Cc= 0.900 Primary OutFlow Max =5.03 cfs @ 12.59 hrs HW= 867.76' (Free Discharge) L1= Culvert (Barrel Controls 5.03 cfs @ 4.3 fps) L2= Culvert (Passes 5.03 cfs of 6.64 cfs potential flow) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 2 year Rainfall= 2.70" Prepared by {enter your company name here} Page 16 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 2 year Rainfall= 2.70" Prepared by {enter your company name here} Page 17 HydroCAM 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 917.00' Surf.Area= 0.340 ac Storage= 0.985 of Peak Elev= 918.12'@ 12.97 hrs Surf.Area= 0.375 ac Storage= 1.390 of (0.405 of above start) Plug -Flow detention time= 997.5 min calculated for 0.231 of (19% of inflow) Center -of -Mass det. time= 156.9 min ( 1,053.5 - 896.7) # Invert Avail.Storage Pond 6P: SW POND Inflow Area = 11.760 ac, Inflow Depth = 1.25" for 2 year event Inflow = 8.78 cfs @ 11.99 hrs, Volume= 1.222 of Outflow = 2.98 cfs @ 12.97 hrs, Volume= 1.216 af, Atten= 66 %, Lag= 58.7 min Primary = 2.98 cfs @ 12.97 hrs, Volume= 1.216 of Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 917.00' Surf.Area= 0.340 ac Storage= 0.985 of Peak Elev= 918.12'@ 12.97 hrs Surf.Area= 0.375 ac Storage= 1.390 of (0.405 of above start) Plug -Flow detention time= 997.5 min calculated for 0.231 of (19% of inflow) Center -of -Mass det. time= 156.9 min ( 1,053.5 - 896.7) # Invert Avail.Storage Storage Description 1 912.00' 2.640 of Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre -feet) (acre -feet) 912.00 0.130 0.000 0.000 914.00 0.170 0.300 0.300 916.00 0.230 0.400 0.700 917.00 0.340 0.285 0.985 918.00 0.370 0.355 1.340 920.00 0.450 0.820 2.160 921.00 0.510 0.480 2.640 # Routing Invert Outlet Devices 1 Primary 909.95' 12.0" x 45.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 909.50' S= 0.01007' n= 0.013 Cc= 0.900 2 Device 1 914.50' 12.0" x 26.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 917.00' S=-0.0962'/' n=0.013 Cc= 0.900 Primary OutFlow Max =2.98 cfs @ 12.97 hrs HW= 918.12' (Free Discharge) L1= Culvert (Passes 2.98 cfs of 10.20 cfs potential flow) t-2= Culvert (Inlet Controls 2.98 cfs @ 3.8 fps) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 1124 -hr2 year Rainfall = 2.70" Prepared by {enter your company name here} Page 18 HydroCADO 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Pond 6P: SW POND PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 2 year Rainfall= 2.70" Prepared by {enter your company name here} Page 19 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 927.00' Surf.Area= 0.170 ac Storage= 0.411 of Peak Elev= 928.34'@ 12.19 hrs Surf.Area= 0.262 ac Storage= 0.713 of (0.302 of above start) Plug -Flow detention time= 328.3 min calculated for 0.543 of (57% of inflow) Center -of -Mass det. time= 73.8 min ( 916.5 - 842.6 ) # Invert Avail.Storage Pond 7P: SE POND Inflow Area = 9.480 ac, Inflow Depth = 1.21" for 2 year event Inflow = 17.03 cfs @ 12.03 hrs, Volume= 0.955 of Outflow = 6.55 cfs @ 12.19 hrs, Volume= 0.954 af, Atten= 62 %, Lag= 9.8 min Primary = 6.55 cfs @ 12.19 hrs, Volume= 0.954 of Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 927.00' Surf.Area= 0.170 ac Storage= 0.411 of Peak Elev= 928.34'@ 12.19 hrs Surf.Area= 0.262 ac Storage= 0.713 of (0.302 of above start) Plug -Flow detention time= 328.3 min calculated for 0.543 of (57% of inflow) Center -of -Mass det. time= 73.8 min ( 916.5 - 842.6 ) # Invert Avail.Storage Storage Description 1 922.00' 1.594 of Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre -feet) (acre -feet) 922.00 0.010 0.000 0.000 924.00 0.072 0.082 0.082 926.00 0.115 0.187 0.269 927.00 0.170 0.142 0.411 928.00 0.230 0.200 0.611 929.50 0.373 0.452 1.064 930.00 0.570 0.236 1.299 930.50 0.610 0.295 1.594 # Routing Invert Outlet Devices 1 Primary 917.90' 18.0" x 138.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 917.00' S= 0.00657' n= 0.013 Cc= 0.900 2 Device 1 924.50' 18.0" x 33.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 927.00' S=-0.0758'/' n=0.013 Cc= 0.900 Primary OutFlow Max =6.55 cfs @ 12.19 hrs HW= 928.34' TW= 917.68' (Dynamic Tailwater) L1= Culvert (Passes 6.55 cfs of 22.17 cfs potential flow) L2= Culvert (inlet Controls 6.55 cfs @ 3.9 fps) PROPOSED 8 -11 -10 (TYPE C SOILS) Type// 24 -hr 2 year Rainfall= 2.70" Prepared by {enter your company name here} Page 20 HydroCAD® 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Pond 7P: SE POND Hydrograph 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type// 24 -hr 2 year Rainfall =2.70" Prepared by {enter your company name here} Page 21 HydroCADO 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Pond 9P: MITIGATION AREA #1 Inflow Area = 1.890 ac, Inflow Depth = 1.03" for 2 year event Inflow = 2.77 cfs @ 12.04 hrs, Volume= 0.162 of Outflow = 1.22 cfs @ 12.20 hrs, Volume= 0.162 af, Atten= 56 %, Lag= 9.4 min Primary = 1.22 cfs @ 12.20 hrs, Volume= 0.162 of Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 865.10' Surf.Area= 0.324 ac Storage= 0.246 of Peak Elev= 865.23' @ 12.20 hrs Surf.Area= 0.355 ac Storage= 0.292 of (0.046 of above start) Plug -Flow detention time= (not calculated) Center -of -Mass det. time= (not calculated) # Invert Avail.Storage Storage Description 1 864.00' 2.245 of Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre -feet) (acre -feet) 864.00 0.120 0.000 0.000 865.00 0.300 0.210 0.210 865.50 0.420 0.180 0.390 866.00 7.000 1.855 2.245 _ #_ Routing Invert Outlet Devices 1 Primary 865.10' 10.0' long x 20.0' breadth Broad - Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max =1.22 cfs @ 12.20 hrs HW= 865.23' (Free Discharge) L1= 13road - Crested Rectangular Weir (Weir Controls 1.22 cfs @ 1.0 fps) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 1124 -hr2 year Rainfall= 2.70" Prepared by {enter your company name here} Page 22 HydroCADO 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Pond 9P: MITIGATION AREA #1 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 1124 -hr 10 year Rainfall = 4.20" Prepared by {enter your company name here} Page 23 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Time span =0.00- 100.00 hrs, dt =0.01 hrs, 10001 points Runoff by SCS TR -20 method, UH =SCS Reach routing by Sim -Route method - Pond routing by Sim -Route method Subcatchment 1S: SUB 1 TO DITCH Runoff Area = 13.380 ac Runoff Depth= 1.89" Flow Length =160' Tc =23.3 min CN =76 Runoff =25.46 cfs 2.111 of Subcatchment 2S: CENTER OF SITE Runoff Area = 22.260 ac Runoff Depth= 2.37" Flow Length =955' Tc =15.0 min CN =82 Runoff =68.44 cfs 4.405 of Subcatchment 3S: NE OFF -SITE Runoff Area =0.530 ac Runoff Depth= 2.82" Flow Length =70' Tc =10.4 min CN =87 Runoff =2.22 cfs 0.125 of Subcatchment 4S: NE OFF -SITE Runoff Area =0.380 ac Runoff Depth= 3.01" Tc =3.0 min CN =89 Runoff =2.15 cfs 0.095 of Subcatchment 5S: SE OFF -OSITE Runoff Area =7.350 ac Runoff Depth= 1.60" Flow Length =300' Tc =44.0 min CN =72 Runoff =7.50 cfs 0.981 of Subcatchment 6S: SW SUB Runoff Area =2.280 ac Runoff Depth= 2.73" Tc =5.0 min CN =86 Runoff =11.19 cfs 0.518 of Subcatchment 7S: SE SUB Runoff Area =9.480 ac Runoff Depth= 2.46" Flow Length =560' Tc =11.0 min CN =83 Runoff =34.47 cfs 1.944 of Subcatchment 8S: SUB 8 OFF -SITE Runoff Area =1.300 ac Runoff Depth= 1.97" Flow Length =60' Tc =6.9 min CN =77 Runoff =4.43 cfs 0.213 of Subcatchment 9S: SUB MIT AREA Runoff Area =1.890 ac Runoff Depth= 2.21" Flow Length =160' Tc =11.9 min CN =80 Runoff =6.01 cfs 0.348 of Subcatchment 10S: SE OFF -SITE Runoff Area =0.880 ac Runoff Depth= 1.60" Tc =5.0 min CN =72 Runoff =2.62 cfs 0.117 of Subcatchment 11 S: SE OFF -SITE Runoff Area =0.450 ac Runoff Depth= 2.13" Tc =5.0 min CN =79 Runoff =1.77 cfs 0.080 of Pond 2P: NORTH POND Peak Elev= 869.11' Storage =4.823 of Inflow =68.44 cfs 4.405 of Outflow =9.55 cfs 4.386 of Pond 6P: SW POND Peak Elev= 919.40' Storage =1.913 of Inflow =18.15 cfs 2.461 of Outflow =5.21 cfs 2.456 of Pond 7P: SE POND Peak Elev= 929.48' Storage =1.057 of Inflow =34.47 cfs 1.944 of Outflow =11.19 cfs 1.943 of Pond 9P: MITIGATION AREA #1 Peak Elev= 865.35' Storage =0.337 of Inflow =6.01 cfs 0.348 of Outflow =3.41 cfs 0.348 of PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 10 year Rainfall = 4.20" Prepared by {enter your company name here} Page 24 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Total Runoff Area = 60.180 ac Runoff Volume = 10.938 of Average Runoff Depth = 2.18" PROPOSED 8 -11 -10 (TYPE C SOILS) Type// 24 -hr 10 year Rainfall = 4.20" Prepared by {enter your company name here} Page 25 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 1S: SUB 1 TO DITCH Runoff = 25.46 cfs @ 12.17 hrs, Volume= 2.111 af, Depth= 1.89" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 year Rainfall= 4.20" Area (ac) CN Description 1.600 61 Pasture /grassland /range, Good, HSG B 5.170 85 Wetland 0.980 55 Woods, Good, HSG B 5.180 74 >75% Grass cover, Good, HSG C 0.450 98 Rooftops 13.380 76 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 23.3 160 0.0185 0.1 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" Subcatchment 1S: SUB 1 TO DITCH 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type// 24 -hr 10 year Rainfall= 4.20" Prepared by {enter your company name here} Page 26 HydroCADO 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 2S: CENTER OF SITE Runoff = 68.44 cfs @ 12.07 hrs, Volume= 4.405 af, Depth= 2.37" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 year Rainfall= 4.20" Area (ac) CN Descriotion 3.420 98 Rooftops 2.260 98 Roadway 1.300 98 Driveway 0.190 98 Sidewalk 0.680 98 Open water 14.410 74 >75% Grass cover. Good. HSG C 22.260 82 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.0 Direct Entry, Roof to yard 10.5 75 0.0300 0.1 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" 1.0 125 0.0200 2.1 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 2.5 755 5.0 Direct Entrv. Pioe flow 0 5 fas 15.0 955 Total Subcatchment 2S: CENTER OF SITE 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 1124 -hr 10 year Rainfall = 4.20" Prepared by {enter your company name here} Page 27 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 3S: NE OFF -SITE Runoff = 2.22 cfs @ 12.02 hrs, Volume= 0.125 af, Depth= 2.82" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 year Rainfall= 4.20" Area (ac) CN Descriotion 0.090 98 Rooftop 0.100 98 Roadway 0.080 98 Driveway 0.020 98 Sidewalk 0.240 74 >75% Grass cover. Good. HSG C 0.530 87 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.0 Direct Entry, Roof to yard 8.9 70 0.0400 0.1 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" 0.5 Direct Entrv. Gutter flow 0 3 fos 10.4 70 Total [3 Runoff 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 10 year Rainfall= 4.20" Prepared by {enter your company name here} Page 28 HydroCADO 7.00 s/n 000744 ©1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 4S: NE OFF -SITE Runoff = 2.15 cfs @ 11.94 hrs, Volume= 0.095 af, Depth= 3.01" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 year Rainfall= 4.20" Area (ac) CN Description 0.170 98 Roadway 0.060 98 Sidewalk 0.150 74 >75% Grass cover. Good. HSG C 0.380 89 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.0 Direct Entry, Subcatchment 4S: NE OFF -SITE 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type Il 24 -hr 10 year Rainfall= 4.20" Prepared by {enter your company name here} Page 29 HydroCAD® 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 5S: SE OFF -OSITE Runoff = 7.50 cfs @ 12.46 hrs, Volume= 0.981 af, Depth= 1.60" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 year Rainfall= 4.20" Area (ac) CN Description 0.950 55 Woods, Good, HSG B 6.400 74 >75% Grass cover, Good, HSG C 7.350 72 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 44.0 300 0.0133 0.1 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" Subcatchment 5S: SE OFF -OSITE Hydrograph 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 10 year Rainfall= 4.20" Prepared by {enter your company name here} Page 30 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 6S: SW SUB Runoff = 11.19 cfs @ 11.96 hrs, Volume= 0.518 af, Depth= 2.73" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 year Rainfall= 4.20" Area (ac) CN Description 0.460 98 Roadway 0.150 98 Sidewalk 0.340 98 Open water 1.140 74 >75% Grass cover, Good, HSG C 0.190 98 Parking lot 2.280 86 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Gutter flow @ 3 fps Subcatchment 6S: SW SUB 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type// 24 -hr 10 year Rainfall = 4.20" Prepared by {enter your company name here} Page 31 HydroCADO 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 7S: SE SUB Runoff = 34.47 cfs @ 12.03 hrs, Volume= 1.944 af, Depth= 2.46" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 year Rainfall= 4.20" Area (ac) CN Descriotion 1.410 98 Rooftop 1.090 98 Roadway 0.520 98 Driveway 0.160 98 Sidewalk 0.360 98 Open water 5.940 74 >75% Grass cover, Good, HSG C 9.480 83 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.5 55 0.0270 0.1 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" 1.3 160 0.0200 2.1 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 1.1 345 5.0 Direct Entrv. Pipe flow 0 5 fps 11.0 560 Total Subcatchment 7S: SE SUB 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type// 24 -hr 10 year Rainfall = 4.20" Prepared by {enter your company name here} Page 32 HydroCADO 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 8S: SUB 8 OFF -SITE Runoff = 4.43 cfs @ 11.99 hrs, Volume= 0.213 af, Depth= 1.97" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 year Rainfall= 4.20" Area (ac) CN Description 1.120 74 >75% Grass cover, Good, HSG C 0.180 98 Rooftop 1.300 77 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.0 Direct Entry, Roof to yard 5.9 60 0.0800 0.2 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" 6.9 60 Total ® Runoff 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 10 year Rainfall = 4.20" Prepared by {enter your company name here) Page 33 HydroCAD® 7.00 s/n 000744 ©1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 9S: SUB MIT AREA Runoff = 6.01 cfs @ 12.04 hrs, Volume= 0.348 af, Depth= 2.21" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 year Rainfall= 4.20" Area (ac) CN Description 1.380 74 >75% Grass cover, Good, HSG C 0.090 98 Rooftop 0.420 98 Mitigation Wetland 1.890 80 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.0 Direct Entry, Roof to yard 10.9 160 0.1250 0.2 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" 11.9 160 Total Runoff 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type// 24 -hr 10 year Rainfall = 4.20" Prepared by {enter your company name here} Page 34 HydroCAD(D 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 10S: SE OFF -SITE Runoff = 2.62 cfs @ 11.97 hrs, Volume= 0.117 af, Depth= 1.60" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 year Rainfall= 4.20" Area (ac) CN Description 0.250 98 IMPERVIOUS 0.630 61 >75% Grass cover, Good, HSG B 0.880 72 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 10S: SE OFF -SITE 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 10 year Rainfall = 4.20" Prepared by {enter your company name here) Page 35 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 11 S: SE OFF -SITE Runoff = 1.77 cfs @ 11.96 hrs, Volume= 0.080 af, Depth= 2.13" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 year Rainfall= 4.20" Area (ac) CN Description 0.220 98 IMPERVIOUS 0.230 61 >75% Grass cover, Good, HSG B 0.450 79 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, ® Runoff 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 1124 -hr 10 year Rainfall= 4.20" Prepared by {enter your company name here} Page 36 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Pond 2P: NORTH POND Inflow Area = 22.260 ac, Inflow Depth = 2.37" for 10 year event Inflow = 68.44 cfs @ 12.07 hrs, Volume= 4.405 of Outflow = 9.55 cfs @ 12.59 hrs, Volume= 4.386 af, Atten= 86 %, Lag= 31.1 min Primary = 9.55 cfs @ 12.59 hrs, Volume= 4.386 of Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 866.50' Surf.Area= 0.690 ac Storage= 2.745 of Peak Elev= 869.11' @ 12.59 hrs Surf.Area= 0.879 ac Storage= 4.823 of (2.078 of above start) Plug -Flow detention time= 623.8 min calculated for 1.641 of (37% of inflow) Center -of -Mass det. time= 186.0 min ( 1,015.0 - 829.0) # Invert Avail.Storage Storage Description 1 858.00' 6.595 of Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre -feet) (acre -feet) 858.00 0.140 0.000 0.000 860.00 0.210 0.350 0.350 862.00 0.280 0.490 0.840 864.00 0.370 0.650 1.490 866.00 0.570 0.940 2.430 866.50 0.690 0.315 2.745 868.00 0.790 1.110 3.855 870.00 0.950 1.740 5.595 871.00 1.050 1.000 6.595 # Routing Invert Outlet Devices 1 Primary 866.50' 18.0" x 21.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 866.30' S= 0.00957' n= 0.013 Cc= 0.900 2 Device 1 864.00' 15.0" x 30.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 864.30' S=-0.0100'/' n=0.013 Cc= 0.900 Primary OutFlow Max =9.55 cfs @ 12.59 hrs HW= 869.11' (Free Discharge) t-1= Culvert (Passes 9.55 cfs of 11.61 cfs potential flow) t-2= Culvert (Inlet Controls 9.55 cfs @ 7.8 fps) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 1124 -hr 10 year Rainfall= 4.20" Prepared by {enter your company name here} Page 37 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Pond 2P: NORTH POND 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 10 year Rainfall = 4.20" Prepared by {enter your company name here} Page 38 HydroCAD® 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 917.00' Surf.Area= 0.340 ac Storage= 0.985 of Peak Elev= 919.40'@ 13.31 hrs Surf.Area= 0.426 ac Storage= 1.913 of (0.928 of above start) Plug -Flow detention time= 408.6 min calculated for 1.471 of (60% of inflow) Center -of -Mass det. time= 137.7 min ( 1,002.6 - 864.9) # Invert Avail.Storage Pond 6P: SW POND Inflow Area = 11.760 ac, Inflow Depth = 2.51" for 10 year event Inflow = 18.15 cfs @ 11.97 hrs, Volume= 2.461 of Outflow = 5.21 cfs @ 13.31 hrs, Volume= 2.456 af, Atten= 71 %, Lag= 80.4 min Primary = 5.21 cfs @ 13.31 hrs, Volume= 2.456 of Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 917.00' Surf.Area= 0.340 ac Storage= 0.985 of Peak Elev= 919.40'@ 13.31 hrs Surf.Area= 0.426 ac Storage= 1.913 of (0.928 of above start) Plug -Flow detention time= 408.6 min calculated for 1.471 of (60% of inflow) Center -of -Mass det. time= 137.7 min ( 1,002.6 - 864.9) # Invert Avail.Storage Storage Description 1 912.00' 2.640 of Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre -feet) (acre -feet) 912.00 0.130 0.000 0.000 914.00 0.170 0.300 0.300 916.00 0.230 0.400 0.700 917.00 0.340 0.285 0.985 918.00 0.370 0.355 1.340 920.00 0.450 0.820 2.160 921.00 0.510 0.480 2.640 # Routing Invert Outlet Devices 1 Primary 909.95' 12.0" x 45.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 909.50' S= 0.01007' n= 0.013 Cc= 0.900 2 Device 1 914.50' 12.0" x 26.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 917.00' S=-0.09627' n=0.013 Cc= 0.900 Primary OutFlow Max =5.21 cfs @ 13.31 hrs HW= 919.40' (Free Discharge) L1= Culvert (Passes 5.21 cfs of 11.02 cfs potential flow) L2= Culvert (Inlet Controls 5.21 cfs @ 6.6 fps) PROPOSED 8-11-10 (TYPE C SOILS) Type// 24-hr 10 year Rainfall=4.20 " Prepared by {enter your company name here} Page 39 HydroCAM 7.00 s/n 000744 Q 1986-2003 Applied Microcomputer Systems 8/20/2010 Pond 6P: SW POND 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) 11 01, 0 9- M - 8 7- 6J 5 41 2 ............................ 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type// 24 -hr 10 year Rainfall = 4.20" Prepared by {enter your company name here} Page 40 HydroCADO 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Pond 7P: SE POND Inflow Area = 9.480 ac, Inflow Depth= 2.46" for 10 year event Inflow = 34.47 cfs @ 12.03 hrs, Volume= 1.944 of Outflow = 11.19 cfs @ 12.21 hrs, Volume= 1.943 af, Atten= 68 %, Lag= 11.2 min Primary = 11.19 cfs @ 12.21 hrs, Volume= 1.943 of Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 927.00' Surf.Area= 0.170 ac Storage= 0.411 of Peak Elev= 929.48'@ 12.21 hrs Surf.Area= 0.371 ac Storage= 1.057 of (0.646 of above start) Plug -Flow detention time= 188.6 min calculated for 1.531 of (79% of inflow) Center -of -Mass det. time= 58.1 min ( 880.3 - 822.3) # Invert Avail.Storage Storage Description 1 922.00' 1.594 of Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre -feet) (acre -feet) 922.00 0.010 0.000 0.000 924.00 0.072 0.082 0.082 926.00 0.115 0.187 0.269 927.00 0.170 0.142 0.411 928.00 0.230 0.200 0.611 929.50 0.373 0.452 1.064 930.00 0.570 0.236 1.299 930.50 0.610 0.295 1.594 # Routing Invert Outlet Devices 1 Primary 917.90' 18.0" x 138.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 917.00' S= 0.00657' n= 0.013 Cc= 0.900 2 Device 1 924.50' 18.0" x 33.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 927.00' S= -0.0758T n= 0.013 Cc= 0.900 Primary OutFlow Max =11.19 cfs @ 12.21 hrs HW= 929.48' TW= 918.45' (Dynamic Tailwater) t-1= Culvert (Passes 11.19 cfs of 23.42 cfs potential flow) t-2= Culvert (Inlet Controls 11.19 cfs @ 6.3 fps) PROPOSED 8 -11 -10 (TYPE C SOILS) Type// 24-hr 10 year Rainfall=4.20" Prepared by {enter your company name here) Page 41 HydroCADO 7.00 s/n 000744 0 1986-2003 Applied Microcomputer Systems 8/20/2010 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) Pond 7P: SE POND Hydrograph . ... ... ... ... . . ... ... ... ... . . ... ... . .. ... ... .. .. ... .. ... ... ... ... ... .. ... ... ... ... ... . ... ... ... .. .. ... ... .. ... ... ... .. .. ... .. .. ... ... ... FM Inflow 38 34.47 efs B Primary 36 ... .. ... .. ... ... ... .. Inflow--Area=9.480 ac 34 32 ... .. ... ... -------- -- ---- ---------------- Pea 30- 28- ... ... ... ... - - . ... ... ... ... ... ... - .. ... . . ... ... ... ... ... .. ... ... .. -..--.-Storage -1.057 of 26- ... ... ... ... .. ... ... ... ... 24- --- --- ----- ----- 22 20 ... ... ... . . .. ... ... ... ... ... ... .. 3: 0 18 ... .. ... ... ... ... . . .. . .. ... ... . EL 16 14 - 12- ' I-' 11.19 efs I - - --- - - - - - - - - . ... ... ... ... ..... ... ... ... ... ... ... ... ... ... .. ... ... ... 10 - ... .... ... ... ... ... .. ... .... . ... ... ... ... ... .. ... ... ... . . 8- 6z -----------.--------------.-----------------.----------------- 4 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 10 year Rainfall = 4.20" Prepared by {enter your company name here} Page 42 HydroCADO 7.00 s/n 000744 ©1986 -2003 Applied Microcomputer. Systems 8/20/2010 Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 865.10' Surf.Area= 0.324 ac Storage= 0.246 of Peak Elev= 865.35'@ 12.16 hrs Surf.Area= 0.385 ac Storage= 0.337 of (0.091 of above start) Plug -Flow detention time= 446.0 min calculated for 0.102 of (29% of inflow) Center -of -Mass det. time= 39.4 min ( 871.2 - 831.9 ) # Invert Avail.Storage Pond 9P: MITIGATION AREA #1 Inflow Area = 1.890 ac, Inflow Depth = 2.21" for 10 year event Inflow = 6.01 cfs @ 12.04 hrs, Volume= 0.348 of Outflow = 3.41 cfs @ 12.16 hrs, Volume= 0.348 af, Atten= 43 %, Lag= 7.3 min Primary = 3.41 cfs @ 12.16 hrs, Volume= 0.348 of Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 865.10' Surf.Area= 0.324 ac Storage= 0.246 of Peak Elev= 865.35'@ 12.16 hrs Surf.Area= 0.385 ac Storage= 0.337 of (0.091 of above start) Plug -Flow detention time= 446.0 min calculated for 0.102 of (29% of inflow) Center -of -Mass det. time= 39.4 min ( 871.2 - 831.9 ) # Invert Avail.Storage Storage Description 1 864.00' 2.245 of Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre -feet) (acre -feet) 864.00 0.120 0.000 0.000 865.00 0.300 0.210 0.210 865.50 0.420 0.180 0.390 866.00 7.000 1.855 2.245 # Routing Invert Outlet Devices 1 Primary 865.10' 10.0' long x 20.0' breadth Broad - Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max =3.41 cfs @ 12.16 hrs HW= 865.35' (Free Discharge) L1= Broad - Crested Rectangular Weir (Weir Controls 3.41 cfs @ 1.4 fps) PROPOSED 8 -11 -10 (TYPE C SOILS) Type II 24 -hr 10 year Rainfall= 4.20" Prepared by {enter your company name here} Page 43 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Pond 9P: MITIGATION AREA #1 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type// 24 -hr 100 year Rainfall = 6.00" Prepared by {enter your company name here} Page 44 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Time span =0.00- 100.00 hrs, dt =0.01 hrs, 10001 points Runoff by SCS TR -20 method, UH =SCS Reach routing by Sim -Route method - Pond routing by Sim -Route method Subcatchment 1S: SUB 1 TO DITCH RunoffArea= 13.380 ac Runoff Depth= 3.38" Flow Length =160' Tc =23.3 min CN =76 Runoff =45.98 cfs 3.769 of Subcatchment 2S: CENTER OF SITE Runoff Area = 22.260 ac Runoff Depth= 3.99" Flow Length =955' Tc =15.0 min CN =82 Runoff= 113.55 cfs 7.396 of Subcatchment 3S: NE OFF -SITE Runoff Area =0.530 ac Runoff Depth= 4.52" Flow Length =70' Tc =10.4 min CN =87 Runoff =3.47 cfs 0.200 of Subcatchment 4S: NE OFF -SITE Runoff Area =0.380 ac Runoff Depth= 4.74" Tc =3.0 min CN =89 Runoff =3.28 cfs 0.150 of Subcatchment 5S: SE OFF -OSITE Runoff Area =7.350 ac Runoff Depth= 2.99" Flow Length =300' Tc =44.0 min CN =72 Runoff =14.54 cfs 1.833 of Subcatchment 6S: SW SUB Runoff Area =2.280 ac Runoff Depth= 4.41" Tc =5.0 min CN =86 Runoff =17.59 cfs 0.838 of Subcatchment 7S: SE SUB Runoff Area =9.480 ac Runoff Depth= 4.09" Flow Length =560' Tc =11.0 min CN =83 Runoff =56.33 cfs 3.232 of Subcatchment 8S: SUB 8 OFF -SITE Runoff Area =1.300 ac Runoff Depth= 3.48" Flow Length =60' Tc =6.9 min CN =77 Runoff =7.74 cfs 0.377 of Subcatchment 9S: SUB MIT AREA Runoff Area =1.890 ac Runoff Depth= 3.78" Flow Length =160' Tc =11.9 min CN =80 Runoff =10.18 cfs 0.596 of Subcatchment 10S: SE OFF -SITE Runoff Area =0.880 ac Runoff Depth= 2.99" Tc =5.0 min CN =72 Runoff =4.88 cfs 0.220 of Subcatchment 11S: SE OFF -SITE RunoffArea =0.450 ac Runoff Depth= 3.68" Tc =5.0 min CN =79 Runoff =3.01 cfs 0.138 of Pond 2P: NORTH POND Peak EIev= 870.87' Storage =6.466 of Inflow= 113.55 cfs 7.396 of Outflow =12.35 cfs 7.377 of Pond 6P: SW POND Peak EIev= 920.92' Storage =2.601 of Inflow =27.52 cfs 4.069 of Outflow =6.99 cfs 4.063 of Pond 7P: SE POND Peak EIev= 930.43' Storage =1.551 of Inflow =56.33 cfs 3.232 of Outflow =13.92 cfs 3.231 of Pond 9P: MITIGATION AREA #1 Peak Elev= 865.49' Storage =0.387 of Inflow =10.18 cfs 0.596 of Outflow =6.59 cfs 0.596 of PROPOSED 8 -11 -10 (TYPE C SOILS) Type // 24 -hr 100 year Rainfall = 6.00" Prepared by {enter your company name here} Page 45 HydroCADO 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Total Runoff Area = 60.180 ac Runoff Volume = 18.748 of Average Runoff Depth = 3.74" PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 100 year Rainfall=6. 00 " Prepared by {enter your company name here} Page 46 HydroCAD® 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 1S: SUB 1 TO DITCH Runoff = 45.98 cfs @ 12.17 hrs, Volume= 3.769 af, Depth= 3.38" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 year Rainfall= 6.00" Area (ac) CN Description 1.600 61 Pasture /grassland /range, Good, HSG B 5.170 85 Wetland 0.980 55 Woods, Good, HSG B 5.180 74 >75% Grass cover, Good, HSG C 0.450 98 Rooftops 13.380 76 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 23.3 160 0.0185 0.1 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" Subcatchment IS: SUB 1 TO DITCH 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type// 24 -hr 100 year Rainfall=6. 00 " Prepared by {enter your company name here} Page 47 HydroCADO 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 2S: CENTER OF SITE Runoff = 113.55 cfs @ 12.07 hrs, Volume= 7.396 af, Depth= 3.99" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 year Rainfall= 6.00" Area (ac) CN Description 3.420 98 Rooftops 2.260 98 Roadway 1.300 98 Driveway 0.190 98 Sidewalk 0.680 98 Open water 14.410 74 >75% Grass cover, Good, HSG C 22.260 82 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.0 Direct Entry, Roof to yard 10.5 75 0.0300 0.1 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" 1.0 125 0.0200 2.1 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 2.5 755 5.0 Direct Entrv. Pipe flow (a) 5 fns 15.0 955 Total Subcatchment 2S: CENTER OF SITE 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 100 year Rainfall=6. 00 " Prepared by {enter your company name here} Page 48 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 3S: NE OFF -SITE Runoff = 3.47 cfs @ 12.02 hrs, Volume= 0.200 af, Depth= 4.52" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 year Rainfall= 6.00" Area (ac) CN Description 0.090 98 Rooftop 0.100 98 Roadway 0.080 98 Driveway 0.020 98 Sidewalk 0.240 74 >75% Grass cover, Good, HSG C 0.530 87 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.0 Direct Entry, Roof to yard 8.9 70 0.0400 0.1 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" 0.5 Direct Entrv, Gutter flow (& 3 fps 10.4 70 Total Runoff 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 100 year Rainfall= 6. 00 " Prepared by {enter your company name here} Page 49 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 4S: NE OFF -SITE Runoff = 3.28 cfs @ 11.93 hrs, Volume= 0.150 af, Depth= 4.74" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 year Rainfall= 6.00" Area (ac) CN Description 0.170 98 Roadway 0.060 98 Sidewalk 0.150 74 >75% Grass cover. Good. HSG C 0.380 89 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.0 Direct Entry, Subcatchment 4S: NE OFF -SITE 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type// 24 -hr 100 year Rainfall = 6.00" Prepared by {enter your company name here} Page 50 HydroCADO 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 5S: SE OFF -OSITE Runoff = 14.54 cfs @ 12.42 hrs, Volume= 1.833 af, Depth= 2.99" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 year Rainfall= 6.00" Area (ac) CN Description 0.950 55 Woods, Good, HSG B 6.400 74 >75% Grass cover, Good, HSG C 7.350 72 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 44.0 300 0.0133 0.1 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" Subcatchment 5S: SE OFF -OSITE Hydrograph 16 ..... ;. Runoff 15 14 14 sa cts' .... - T a Il 2 7 4-h lr - 100 - ear ... Yp . Y 13 . ..... _ . ... ... ... ... ..... ......... . _ fall 6.00' 12 " Runoff Area -7.350 ac_ . 11 10 __ Runoff Volume =1.833 of _ ..... .. .... ... .. 9 " .. _ ;... Runoff ;Depth = 2.99'- .. g T 7 ,Flow Length =300, . 6 ; .. _ ......... ;..._ _. T 44 0 min 5 - --------- - - - - -- -' -- - - - EN =12 - - q . 3 ... !.... _ ......_ . . . 2 .. 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 1124 -hr 100 year Rainfall= 6.00" Prepared by {enter your company name here} Page 51 HydroCADS 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 6S: SW SUB Runoff = 17.59 cfs @ 11.96 hrs, Volume= 0.838 af, Depth= 4.41" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 year Rainfall= 6.00" Area (ac) CN Description 0.460 98 Roadway 0.150 98 Sidewalk 0.340 98 Open water 1.140 74 >75% Grass cover, Good, HSG C 0.190 98 Parkinq lot 2.280 86 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Gutter flow @ 3 fps Subcatchment 6S: SW SUB 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 1124 -hr 100 year Rainfall = 6.00" Prepared by {enter your company name here} Page 52 HydroCADO 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 7S: SE SUB Runoff = 56.33 cfs @ 12.02 hrs, Volume= 3.232 af, Depth= 4.09" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 year Rainfall= 6.00" Area (ac) CN Description 1.410 98 Rooftop 1.090 98 Roadway 0.520 98 Driveway 0.160 98 Sidewalk 0.360 98 Open water 5.940 74 >75% Grass cover, Good, HSG C 9.480 83 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.5 55 0.0270 0.1 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" 1.3 160 0.0200 2.1 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 1.1 345 5.0 Direct Entrv. Pipe flow Cal 5 fps 11.0 560 Total Subcatchment 7S: SE SUB Hydrograph 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 1124 -hr 100 year Rainfall=6. 00 " Prepared by {enter your company name here} Page 53 HydroCAD& 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 8S: SUB 8 OFF -SITE Runoff = 7.74 cfs @ 11.98 hrs, Volume= 0.377 af, Depth= 3.48" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 year Rainfall= 6.00" Area (ac) CN Description 1.120 74 >75% Grass cover, Good, HSG C 0.180 98 Rooftop 1.300 77 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.0 Direct Entry, Roof to yard 5.9 60 0.0800 0.2 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" 6.9 60 Total Runoff 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 1124 -hr 100 year Rainfall=6. 00 " Prepared by {enter your company name here) Page 54 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 9S: SUB MIT AREA Runoff = 10.18 cfs @ 12.04 hrs, Volume= 0.596 af, Depth= 3.78" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 year Rainfall= 6.00" Area (ac) CN Description 1.380 74 >75% Grass cover, Good, HSG C 0.090 98 Rooftop 0.420 98 Mitigation Wetland 1.890 80 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.0 Direct Entry, Roof to yard 10.9 160 0.1250 0.2 Sheet Flow, Grass: Dense n= 0.240 P2= 2.70" 11.9 160 Total Subcatchment 9S: SUB MIT AREA Hydrograph ._ _ _ - _ _ _ — _ _ _ _ _ ' _ I_ _ J --- — _ _ _ _ _ _ _ _ 10 cfs _,_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _. _ _ _ _ _ 7 _ _ _ _ _ _ _ _ _ _ _ _ _ — — _ _ . _ _ _ 10 Type II 24 -hr 100 year 9 Rainfall 6.00" 6 Runoff Area : .890 ac 7 Runoff Volume =0.596 of 6 Runoff Depth =3.7$" 3 — - — — —I— — — — — — — — — — — — — — — ° 5 -- Flow'Length LL a... --------------------- 4 --- 1'c ='f'1:g min 3 � -80 � ...........I _. ...._ .......:... ... .....1.... ... ... ...........i ....... ... .........._ .................._ L..... _.. .... ... ....... L..... ... ... ... ...... .... .......... . . ....... 2 1 I I I I I I I I I I 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type// 24 -hr 100 year Rainfall= 6.00" Prepared by {enter your company name here} Page 55 HydroCAD® 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 10S: SE OFF -SITE Runoff = 4.88 cfs @ 11.96 hrs, Volume= 0.220 af, Depth= 2.99" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 year Rainfall= 6.00" Area (ac) CN Description 0.250 98 IMPERVIOUS 0.630 61 >75% Grass cover, Good, HSG B 0.880 72 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 10S: SE OFF -SITE 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 1124 -hr 100 year Rainfall=6. 00 " Prepared by {enter your company name here} Page 56 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Subcatchment 11 S: SE OFF -SITE Runoff = 3.01 cfs @ 11.96 hrs, Volume= 0.138 af, Depth= 3.68" Runoff by SCS TR -20 method, UH =SCS, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 year Rainfall= 6.00" Area (ac) CN Description 0.220 98 IMPERVIOUS 0.230 61 >75% Grass cover, Good, HSG B 0.450 79 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 11 S: SE OFF -SITE Hydrograph .. ... ..:.. 3.01 cf5 .. ... ...... ... ........... i .:.. . . .. . ..... .. .. 3 ..... ...... Type II 24 -hr 100 year Raillfal1= 6.00" Runoff Area =0.450 ac p .. Runoff Volume= .138 af. . 2 w Runoff Depth= 3.68" 3 T'c =5.0 min - - - -- -- LL - -- -- ---=---- - - - - -- - -- - -- CN__79 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 100 year Rainfall=6. 00 " Prepared by {enter your company name here} Page 57 HydroCADO 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 866.50' Surf.Area= 0.690 ac Storage= 2.745 of Peak Elev= 870.87'@ 12.68 hrs Surf.Area= 1.037 ac Storage= 6.466 of (3.721 of above start) Plug -Flow detention time= 432.4 min calculated for 4.632 of (63% of inflow) Center -of -Mass det. time= 192.8 min ( 1,007.0 - 814.2) # Invert Avail.Storage Pond 2P: NORTH POND Inflow Area = 22.260 ac, Inflow Depth= 3.99" for 100 year event Inflow = 113.55 cfs @ 12.07 hrs, Volume= 7.396 of Outflow = 12.35 cfs @ 12.68 hrs, Volume= 7.377 af, Atten= 89 %, Lag= 36.8 min Primary = 12.35 cfs @ 12.68 hrs, Volume= 7.377 of Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 866.50' Surf.Area= 0.690 ac Storage= 2.745 of Peak Elev= 870.87'@ 12.68 hrs Surf.Area= 1.037 ac Storage= 6.466 of (3.721 of above start) Plug -Flow detention time= 432.4 min calculated for 4.632 of (63% of inflow) Center -of -Mass det. time= 192.8 min ( 1,007.0 - 814.2) # Invert Avail.Storage Storage Description 1 858.00' 6.595 of Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre -feet) (acre -feet) 858.00 0.140 0.000 0.000 860.00 0.210 0.350 0.350 862.00 0.280 0.490 0.840 864.00 0.370 0.650 1.490 866.00 0.570 0.940 2.430 866.50 0.690 0.315 2.745 868.00 0.790 1.110 3.855 870.00 0.950 1.740 5.595 871.00 1.050 1.000 6.595 # Routing Invert Outlet Devices 1 Primary 866.50' 18.0" x 21.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 866.30' S= 0.0095T n= 0.013 Cc= 0.900 2 Device 1 864.00' 15.0" x 30.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 864.30' S=-0.0100'/' n=0.013 Cc= 0.900 Primary OutFlow Max =12.35 cfs @ 12.68 hrs HW= 870.87' (Free Discharge) t1 = Culvert (Passes 12.35 cfs of 16.19 cfs potential flow) L2= Culvert (Inlet Controls 12.35 cfs @ 10.1 fps) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 1124 -hr 100 year Rainfall= 6.00" Prepared by {enter your company name here) Page 58 HydroCADO 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 100 year Rainfall = 6.00" Prepared by {enter your company name here) Page 59 HydroCADO 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/2012010 Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 917.00' Surf.Area= 0.340,ac Storage= 0.985 of Peak Elev= 920.92' @ 13.80 hrs Surf.Area= 0.505 ac Storage= 2.601 of (1.616 of above start) Plug -Flow detention time= 321.6 min calculated for 3.078 of (76% of inflow) Center -of -Mass det. time= 146.4 min ( 995.6 - 849.2 ) # Invert Avail.Storage Pond 6P: SW POND Inflow Area = 11.760 ac, Inflow Depth = 4.15" for 100 year event Inflow = 27.52 cfs @ 11.97 hrs, Volume= 4.069 of Outflow = 6.99 cfs @ 13.80 hrs, Volume= 4.063 af, Atten= 75 %, Lag= 109.9 min Primary = 6.99 cfs @ 13.80 hrs, Volume= 4.063 of Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 917.00' Surf.Area= 0.340,ac Storage= 0.985 of Peak Elev= 920.92' @ 13.80 hrs Surf.Area= 0.505 ac Storage= 2.601 of (1.616 of above start) Plug -Flow detention time= 321.6 min calculated for 3.078 of (76% of inflow) Center -of -Mass det. time= 146.4 min ( 995.6 - 849.2 ) # Invert Avail.Storage Storage Description 1 912.00' 2.640 of Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre -feet) (acre -feet) 912.00 0.130 0.000 0.000 914.00 0.170 0.300 0.300 916.00 0.230 0.400 0.700 917.00 0.340 0.285 0.985 918.00 0.370 0.355 1.340 920.00 0.450 0.820 2.160 921.00 0.510 0.480 2.640 # Routing Invert Outlet Devices 1 Primary 909.95' 12.0" x 45.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 909.50' S= 0.01007' n= 0.013 Cc= 0.900 2 Device 1 914.50' 12.0" x 26.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 917.00' S=-0.0962'/' n=0.013 Cc= 0.900 Primary OutFlow Max =6.99 cfs @ 13.80 hrs HW= 920.92' (Free Discharge) t-1= Culvert (Passes 6.99 cfs of 11.92 cfs potential flow) t-2= Culvert (Inlet Controls 6.99 cfs @ 8.9 fps) PROPOSED 8 -11 -10 (TYPE C SOILS) Type // 24 -hr 100 year Rainfall=6. 00 " Prepared by {enter your company name here} Page 60 HydroCADO 7.00 s/n 000744 0 1986 -2003 Applied Microcomputer Systems 8/20/2010 PROPOSED 8 -11 -10 (TYPE C SOILS) Type// 24 -hr 100 year Rainfall= 6.00" Prepared by {enter your company name here} Page 61 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 927.00' Surf.Area= 0.170 ac Storage= 0.411 of Peak Elev= 930.43'@ 12.25 hrs Surf.Area= 0.604 ac Storage= 1.551 of (1.140 of above start) Plug -Flow detention time= 144.8 min calculated for 2.819 of (87% of inflow) Center -of -Mass det. time= 55.8 min ( 863.6 - 807.8 ) # Invert Avail.Storage Pond 7P: SE POND Inflow Area = 9.480 ac, Inflow Depth= 4.09" for 100 year event Inflow = 56.33 cfs @ 12.02 hrs, Volume= 3.232 of Outflow = 13.92 cfs @ 12.25 hrs, Volume= 3.231 af, Atten= 75 %, Lag= 13.8 min Primary = 13.92 cfs @ 12.25 hrs, Volume= 3.231 of Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 927.00' Surf.Area= 0.170 ac Storage= 0.411 of Peak Elev= 930.43'@ 12.25 hrs Surf.Area= 0.604 ac Storage= 1.551 of (1.140 of above start) Plug -Flow detention time= 144.8 min calculated for 2.819 of (87% of inflow) Center -of -Mass det. time= 55.8 min ( 863.6 - 807.8 ) # Invert Avail.Storage Storage Description 1 922.00' 1.594 of Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre -feet) (acre -feet) 922.00 0.010 0.000 0.000 924.00 0.072 0.082 0.082 926.00 0.115 0.187 0.269 927.00 0.170 0.142 0.411 928.00 0.230 0.200 0.611 929.50 0.373 0.452 1.064 930.00 0.570 0.236 1.299 930.50 0.610 0.295 1.594 # Routing Invert Outlet Devices 1 Primary 917.90' 18.0" x 138.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 917.00' S= 0.0065'/' n= 0.013 Cc= 0.900 2 Device 1 924.50' 18.0" x 33.0' long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 927.00' S=-0.07587' n=0.013 Cc= 0.900 Primary OutFlow Max =13.92 cfs @ 12.25 hrs HW= 930.43' TW= 919.35' (Dynamic Tailwater) L1= Culvert (Passes 13.92 cfs of 23.53 cfs potential flow) L2= Culvert (Inlet Controls 13.92 cfs @ 7.9 fps) PROPOSED 8 -11 -10 (TYPE C SOILS) Type 11 24 -hr 100 year Rainfall = 6.00" Prepared by {enter your company name here} Page 62 HydroCAD® 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Pond 7P: SE POND 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours) PROPOSED 8 -11 -10 (TYPE C SOILS) Type // 24 -hr 100 year Rainfall= 6.00" Prepared by {enter your company name here} Page 63 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 865.10' Surf.Area= 0.324 ac Storage= 0.246 of Peak Elev= 865.49'@ 12.14 hrs Surf.Area= 0.418 ac Storage= 0.387 of (0.141 of above start) Plug -Flow detention time= 237.7 min calculated for 0.350 of (59% of inflow) Center -of -Mass det. time= 32.9 min ( 849.5 - 816.5) # Invert Avail.Storage Pond 9P: MITIGATION AREA #1 InflowArea = 1.890 ac, Inflow Depth = 3.78" for 100 year event Inflow = 10.18 cfs @ 12.04 hrs, Volume= 0.596 of Outflow = 6.59 cfs @ 12.14 hrs, Volume= 0.596 af, Atten= 35 %, Lag= 6.3 min Primary = 6.59 cfs @ 12.14 hrs, Volume= 0.596 of Routing by Sim -Route method, Time Span= 0.00- 100.00 hrs, dt= 0.01 hrs Starting Elev= 865.10' Surf.Area= 0.324 ac Storage= 0.246 of Peak Elev= 865.49'@ 12.14 hrs Surf.Area= 0.418 ac Storage= 0.387 of (0.141 of above start) Plug -Flow detention time= 237.7 min calculated for 0.350 of (59% of inflow) Center -of -Mass det. time= 32.9 min ( 849.5 - 816.5) # Invert Avail.Storage Storage Description 1 864.00' 2.245 of Custom Stage Data (Prismatic) Listed below Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre -feet) (acre -feet) 864.00 0.120 0.000 0.000 865.00 0.300 0.210 0.210 865.50 0.420 0.180 0.390 866.00 7.000 1.855 2.245 # Routing Invert Outlet Devices 1 Primary 865.10' 10.0' long x 20.0' breadth Broad - Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max =6.59 cfs @ 12.14 hrs HW= 865.49' (Free Discharge) L-1= Broad - Crested Rectangular Weir (Weir Controls 6.59 cfs @ 1.7 fps) PROPOSED 8 -11 -10 (TYPE C SOILS) Type// 24 -hr 100 year Rainfall=6. 00 " Prepared by {enter your company name here} Page 64 HydroCADO 7.00 s/n 000744 © 1986 -2003 Applied Microcomputer Systems 8/20/2010 Pond 9P: MITIGATION AREA #1 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Time (hours)