Supporting Documentation · Aug 15, 2024
J_2024 05 09_West Orange Stormwater Management Plan
c30154c5b2e926fb3bf094c58f5df7b46c6e758698d66ce7ef1e45733c103a5eIndexed text
Post-Developed (O-1B) NOAA 24-hr D 2-Year_Future Rainfall=4.07", P2=4.07" West Orange HydroCAD_Post Printed 5/13/2024 Page 112 Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Primary OutFlow Max=0.16 cfs @ 12.61 hrs HW=595.75' TW=585.32' (Dynamic Tailwater) 1=SD-24 Outlet (Elevation F) (Passes 0.16 cfs of 17.32 cfs potential flow) 2=Water Quatity (Elevation G) (Orifice Controls 0.16 cfs @ 4.68 fps) 3=Water Quantity (Elevation H) ( Controls 0.00 cfs) 4=Overflow Grate (Elevation I) ( Controls 0.00 cfs) Pond 6P: BR-04 Hydrograph Inflow Primary 1.05 cfs Inflow Area=0.317 ac Peak Elev=595.75' Storage=1,229 cf Flow (cfs) 1 0.16 cfs 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Time (hours) 15 16 17 18 19 20 21 22 23 24
Post-Developed (O-1B) West Orange HydroCAD_Post NOAA 24-hr D 2-Year_Future Rainfall=4.07", P2=4.07" Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Hydrograph for Pond 6P: BR-04 Time (hours) 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 6.50 7.00 7.50 8.00 8.50 9.00 9.50 10.00 10.50 11.00 11.50 12.00 12.50 13.00 13.50 14.00 14.50 15.00 15.50 16.00 16.50 17.00 17.50 18.00 18.50 19.00 19.50 20.00 20.50 21.00 21.50 22.00 22.50 23.00 23.50 24.00 Inflow (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.02 0.03 0.03 0.04 0.07 0.12 0.57 0.21 0.11 0.07 0.06 0.05 0.04 0.03 0.03 0.03 0.03 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.01 0.01 0.01 Storage Elevation (cubic-feet) (feet) 0 594.70 0 594.70 0 594.70 1 594.70 5 594.70 10 594.71 16 594.71 23 594.72 30 594.73 37 594.73 44 594.74 50 594.74 56 594.75 62 594.75 68 594.76 76 594.76 84 594.77 93 594.78 103 594.79 116 594.80 134 594.81 156 594.83 193 594.86 270 594.93 571 595.18 1,219 595.74 1,192 595.72 1,076 595.62 930 595.49 790 595.37 657 595.25 535 595.15 432 595.06 348 594.99 282 594.93 230 594.89 192 594.86 167 594.84 151 594.83 141 594.82 134 594.81 129 594.81 125 594.81 122 594.80 118 594.80 116 594.80 113 594.80 110 594.79 107 594.79 Primary (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.02 0.03 0.04 0.06 0.10 0.16 0.16 0.15 0.14 0.12 0.11 0.10 0.08 0.07 0.06 0.05 0.04 0.03 0.03 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.01 Printed 5/13/2024 Page 113
Post-Developed (O-1B) NOAA 24-hr D 2-Year_Future Rainfall=4.07", P2=4.07" West Orange HydroCAD_Post Printed 5/13/2024 Page 114 Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Summary for Pond 8P: O-1B Inflow Area = Inflow = Primary = 1.863 ac, 27.41% Impervious, Inflow Depth > 2.75" for 2-Year_Future event 1.04 cfs @ 12.74 hrs, Volume= 0.427 af 1.04 cfs @ 12.74 hrs, Volume= 0.427 af, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.0100 hrs Pond 8P: O-1B Hydrograph Inflow Primary 1.04 cfs Inflow Area=1.863 ac 1.04 cfs Flow (cfs) 1 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Time (hours) 15 16 17 18 19 20 21 22 23 24
Post-Developed (O-1B) West Orange HydroCAD_Post NOAA 24-hr D 2-Year_Future Rainfall=4.07", P2=4.07" Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Hydrograph for Pond 8P: O-1B Time (hours) 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 6.50 7.00 7.50 8.00 8.50 9.00 9.50 10.00 10.50 11.00 11.50 12.00 12.50 13.00 13.50 14.00 14.50 15.00 15.50 16.00 16.50 17.00 17.50 18.00 18.50 19.00 19.50 20.00 20.50 21.00 21.50 22.00 22.50 23.00 23.50 24.00 Inflow Elevation (cfs) (feet) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.01 0.02 0.02 0.03 0.03 0.04 0.05 0.06 0.07 0.09 0.12 0.16 0.21 0.31 0.53 1.00 1.02 0.93 0.83 0.72 0.63 0.53 0.44 0.37 0.31 0.25 0.21 0.17 0.14 0.13 0.12 0.11 0.11 0.10 0.10 0.09 0.09 0.09 0.08 Primary (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.01 0.02 0.02 0.03 0.03 0.04 0.05 0.06 0.07 0.09 0.12 0.16 0.21 0.31 0.53 1.00 1.02 0.93 0.83 0.72 0.63 0.53 0.44 0.37 0.31 0.25 0.21 0.17 0.14 0.13 0.12 0.11 0.11 0.10 0.10 0.09 0.09 0.09 0.08 Printed 5/13/2024 Page 115
Post-Developed (O-1B) West Orange HydroCAD_Post NOAA 24-hr D 2-Year_Future Rainfall=4.07", P2=4.07" Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Printed 5/13/2024 Page 116 Summary for Pond 13P: SD-25, SD-26 Inflow Area = 1.863 ac, 27.41% Impervious, Inflow Depth > 2.75" for 2-Year_Future event Inflow = 1.04 cfs @ 12.74 hrs, Volume= 0.427 af Outflow = 1.04 cfs @ 12.74 hrs, Volume= 0.427 af, Atten= 0%, Lag= 0.0 min Primary = 1.04 cfs @ 12.74 hrs, Volume= 0.427 af Routed to Pond 8P : O-1B Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.0100 hrs Peak Elev= 580.90' @ 12.74 hrs Surf.Area= 0.000 ac Storage= 0.000 af Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 0.0 min ( 873.7 - 873.7 ) Volume #1 Device #1 Invert 580.69' Routing Primary Avail.Storage 0.007 af Invert 580.44' Storage Description 15.0" Round SD-25 L= 262.4' S= 0.0150 '/' Outlet Devices 18.0" Round SD-26 L= 29.4' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 580.44' / 580.15' S= 0.0099 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 1.77 sf Primary OutFlow Max=1.04 cfs @ 12.74 hrs HW=580.90' TW=0.00' (Dynamic Tailwater) 1=SD-26 (Barrel Controls 1.04 cfs @ 3.33 fps)
Post-Developed (O-1B) NOAA 24-hr D 2-Year_Future Rainfall=4.07", P2=4.07" West Orange HydroCAD_Post Printed 5/13/2024 Page 117 Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Pond 13P: SD-25, SD-26 Hydrograph Inflow Primary 1.04 cfs Inflow Area=1.863 ac Peak Elev=580.90' Storage=0.000 af 18.0" Round Culvert n=0.011 L=29.4' S=0.0099 '/' Flow (cfs) 1 1.04 cfs 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Time (hours) 15 16 17 18 19 20 21 22 23 24
Post-Developed (O-1B) West Orange HydroCAD_Post NOAA 24-hr D 2-Year_Future Rainfall=4.07", P2=4.07" Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Hydrograph for Pond 13P: SD-25, SD-26 Time (hours) 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 6.50 7.00 7.50 8.00 8.50 9.00 9.50 10.00 10.50 11.00 11.50 12.00 12.50 13.00 13.50 14.00 14.50 15.00 15.50 16.00 16.50 17.00 17.50 18.00 18.50 19.00 19.50 20.00 20.50 21.00 21.50 22.00 22.50 23.00 23.50 24.00 Inflow (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.01 0.02 0.02 0.03 0.03 0.04 0.05 0.06 0.07 0.09 0.12 0.16 0.21 0.31 0.53 1.01 1.02 0.93 0.83 0.72 0.63 0.53 0.44 0.37 0.31 0.25 0.21 0.17 0.14 0.13 0.12 0.11 0.11 0.10 0.10 0.09 0.09 0.09 0.08 Storage Elevation (acre-feet) (feet) 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.76 0.000 580.90 0.000 580.90 0.000 580.88 0.000 580.85 0.000 580.82 0.000 580.79 0.000 580.76 0.000 580.73 0.000 580.71 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 0.000 580.69 Primary (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.01 0.02 0.02 0.03 0.03 0.04 0.05 0.06 0.07 0.09 0.12 0.16 0.21 0.31 0.53 1.00 1.02 0.93 0.83 0.72 0.63 0.53 0.44 0.37 0.31 0.25 0.21 0.17 0.14 0.13 0.12 0.11 0.11 0.10 0.10 0.09 0.09 0.09 0.08 Printed 5/13/2024 Page 118
Post-Developed (O-1B) NOAA 24-hr D 2-Year_Future Rainfall=4.07", P2=4.07" West Orange HydroCAD_Post Printed 5/13/2024 Page 119 Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Summary for Pond 14P: SD-24 Inflow Area = 1.622 ac, 27.37% Impervious, Inflow Depth > 2.75" for 2-Year_Future event Inflow = 0.88 cfs @ 12.78 hrs, Volume= 0.371 af Outflow = 0.88 cfs @ 12.78 hrs, Volume= 0.371 af, Atten= 0%, Lag= 0.1 min Primary = 0.88 cfs @ 12.78 hrs, Volume= 0.371 af Routed to Pond 13P : SD-25, SD-26 Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.0100 hrs Peak Elev= 585.32' @ 12.78 hrs Surf.Area= 0.001 ac Storage= 0.000 af Plug-Flow detention time= 0.1 min calculated for 0.371 af (100% of inflow) Center-of-Mass det. time= 0.1 min ( 877.7 - 877.6 ) Volume #1 Device #1 Invert 584.88' Avail.Storage 0.003 af Routing Primary Invert 584.88' Storage Description 15.0" Round SD-24 L= 111.3' S= 0.0150 '/' Outlet Devices 15.0" Vert. SD-24 C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=0.88 cfs @ 12.78 hrs HW=585.32' TW=580.90' (Dynamic Tailwater) 1=SD-24 (Orifice Controls 0.88 cfs @ 2.26 fps) Pond 14P: SD-24 Hydrograph Inflow Primary 0.88 cfs 0.95 0.9 Inflow Area=1.622 ac Peak Elev=585.32' Storage=0.000 af 0.88 cfs 0.85 0.8 0.75 0.7 Flow (cfs) 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Time (hours) 15 16 17 18 19 20 21 22 23 24
Post-Developed (O-1B) West Orange HydroCAD_Post NOAA 24-hr D 2-Year_Future Rainfall=4.07", P2=4.07" Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Hydrograph for Pond 14P: SD-24 Time (hours) 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 6.50 7.00 7.50 8.00 8.50 9.00 9.50 10.00 10.50 11.00 11.50 12.00 12.50 13.00 13.50 14.00 14.50 15.00 15.50 16.00 16.50 17.00 17.50 18.00 18.50 19.00 19.50 20.00 20.50 21.00 21.50 22.00 22.50 23.00 23.50 24.00 Inflow (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.01 0.02 0.02 0.02 0.03 0.03 0.04 0.05 0.06 0.08 0.10 0.13 0.18 0.26 0.43 0.84 0.87 0.80 0.71 0.64 0.56 0.48 0.41 0.34 0.28 0.23 0.19 0.15 0.13 0.11 0.10 0.10 0.09 0.09 0.09 0.08 0.08 0.08 0.07 Storage Elevation (acre-feet) (feet) 0.000 584.88 0.000 584.88 0.000 584.88 0.000 584.88 0.000 584.89 0.000 584.89 0.000 584.90 0.000 584.91 0.000 584.92 0.000 584.92 0.000 584.93 0.000 584.94 0.000 584.94 0.000 584.95 0.000 584.95 0.000 584.96 0.000 584.97 0.000 584.98 0.000 584.99 0.000 585.01 0.000 585.02 0.000 585.05 0.000 585.07 0.000 585.11 0.000 585.18 0.000 585.31 0.000 585.32 0.000 585.30 0.000 585.28 0.000 585.25 0.000 585.23 0.000 585.20 0.000 585.18 0.000 585.15 0.000 585.12 0.000 585.10 0.000 585.08 0.000 585.06 0.000 585.04 0.000 585.03 0.000 585.03 0.000 585.02 0.000 585.02 0.000 585.02 0.000 585.01 0.000 585.01 0.000 585.01 0.000 585.00 0.000 585.00 Primary (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.01 0.02 0.02 0.02 0.03 0.03 0.04 0.05 0.06 0.08 0.10 0.13 0.18 0.26 0.43 0.84 0.87 0.80 0.71 0.64 0.56 0.48 0.41 0.34 0.28 0.23 0.19 0.15 0.13 0.11 0.10 0.10 0.09 0.09 0.09 0.08 0.08 0.08 0.07 Printed 5/13/2024 Page 120
Post-Developed (O-1B) NOAA 24-hr D 2-Year_Future Rainfall=4.07", P2=4.07" West Orange HydroCAD_Post Printed 5/13/2024 Page 121 Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Summary for Pond 17P: SD-23 Inflow Area = 1.305 ac, 24.67% Impervious, Inflow Depth > 2.73" for 2-Year_Future event Inflow = 0.72 cfs @ 12.79 hrs, Volume= 0.297 af Outflow = 0.72 cfs @ 12.79 hrs, Volume= 0.297 af, Atten= 0%, Lag= 0.1 min Primary = 0.72 cfs @ 12.79 hrs, Volume= 0.297 af Routed to Pond 14P : SD-24 Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.0100 hrs Peak Elev= 587.20' @ 12.79 hrs Surf.Area= 0.001 ac Storage= 0.000 af Plug-Flow detention time= 0.1 min calculated for 0.297 af (100% of inflow) Center-of-Mass det. time= 0.1 min ( 878.1 - 878.0 ) Volume #1 Device #1 Invert 586.80' Avail.Storage 0.003 af Routing Primary Invert 586.80' Storage Description 15.0" Round SD-23 L= 93.7' S= 0.0150 '/' Outlet Devices 15.0" Vert. SD-23 C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=0.72 cfs @ 12.79 hrs HW=587.20' TW=585.32' (Dynamic Tailwater) 1=SD-23 (Orifice Controls 0.72 cfs @ 2.14 fps) Pond 17P: SD-23 Hydrograph 0.8 Inflow Primary 0.72 cfs Inflow Area=1.305 ac Peak Elev=587.20' Storage=0.000 af 0.75 0.72 cfs 0.7 0.65 0.6 0.55 Flow (cfs) 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Time (hours) 15 16 17 18 19 20 21 22 23 24
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