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_Current Rainfall=3.45", P2=3.45" West Orange HydroCAD_Post Printed 5/13/2024 Page 72 Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Primary OutFlow Max=0.14 cfs @ 12.59 hrs HW=595.53' TW=585.28' (Dynamic Tailwater) 1=SD-24 Outlet (Elevation F) (Passes 0.14 cfs of 17.10 cfs potential flow) 2=Water Quatity (Elevation G) (Orifice Controls 0.14 cfs @ 4.09 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 0.83 cfs 0.9 Inflow Area=0.317 ac Peak Elev=595.53' Storage=970 cf 0.85 0.8 0.75 0.7 0.65 Flow (cfs) 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.14 cfs 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_Current Rainfall=3.45", P2=3.45" 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 0.00 0.00 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.03 0.03 0.05 0.09 0.44 0.17 0.09 0.06 0.05 0.04 0.03 0.03 0.03 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 Storage Elevation (cubic-feet) (feet) 0 594.70 0 594.70 0 594.70 1 594.70 3 594.70 6 594.71 11 594.71 16 594.71 22 594.72 28 594.72 35 594.73 40 594.73 46 594.74 51 594.74 57 594.75 64 594.75 71 594.76 78 594.77 86 594.77 97 594.78 112 594.79 130 594.81 161 594.83 221 594.88 446 595.07 964 595.52 929 595.49 823 595.40 697 595.29 580 595.19 472 595.10 377 595.01 302 594.95 244 594.90 201 594.87 173 594.84 153 594.83 139 594.82 130 594.81 123 594.80 119 594.80 115 594.80 112 594.79 109 594.79 107 594.79 104 594.79 102 594.79 99 594.78 97 594.78 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 0.00 0.00 0.01 0.01 0.01 0.01 0.01 0.02 0.02 0.03 0.05 0.09 0.14 0.14 0.13 0.11 0.10 0.09 0.08 0.06 0.05 0.04 0.03 0.03 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.01 0.01 0.01 0.01 0.01 Printed 5/13/2024 Page 73
Post-Developed (O-1B) NOAA 24-hr D 2-Year_Current Rainfall=3.45", P2=3.45" West Orange HydroCAD_Post Printed 5/13/2024 Page 74 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 > 2.19" for 2-Year_Current event 0.87 cfs @ 12.76 hrs, Volume= 0.341 af 0.87 cfs @ 12.76 hrs, Volume= 0.341 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 0.95 Inflow Primary 0.87 cfs Inflow Area=1.863 ac 0.87 cfs 0.9 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_Current Rainfall=3.45", P2=3.45" 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 0.00 0.01 0.01 0.01 0.02 0.02 0.02 0.03 0.03 0.04 0.05 0.06 0.08 0.11 0.16 0.25 0.44 0.84 0.86 0.78 0.69 0.60 0.50 0.41 0.34 0.27 0.22 0.18 0.15 0.12 0.11 0.10 0.10 0.09 0.09 0.09 0.08 0.08 0.08 0.07 0.07 Primary (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.01 0.02 0.02 0.02 0.03 0.03 0.04 0.05 0.06 0.08 0.11 0.16 0.25 0.44 0.84 0.86 0.78 0.69 0.60 0.50 0.41 0.34 0.27 0.22 0.18 0.15 0.12 0.11 0.10 0.10 0.09 0.09 0.09 0.08 0.08 0.08 0.07 0.07 Printed 5/13/2024 Page 75
Post-Developed (O-1B) West Orange HydroCAD_Post NOAA 24-hr D 2-Year_Current Rainfall=3.45", P2=3.45" Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Printed 5/13/2024 Page 76 Summary for Pond 13P: SD-25, SD-26 Inflow Area = 1.863 ac, 27.41% Impervious, Inflow Depth > 2.19" for 2-Year_Current event Inflow = 0.87 cfs @ 12.76 hrs, Volume= 0.341 af Outflow = 0.87 cfs @ 12.76 hrs, Volume= 0.341 af, Atten= 0%, Lag= 0.0 min Primary = 0.87 cfs @ 12.76 hrs, Volume= 0.341 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= 580.86' @ 12.76 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 ( 874.4 - 874.4 ) 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=0.87 cfs @ 12.76 hrs HW=580.86' TW=0.00' (Dynamic Tailwater) 1=SD-26 (Barrel Controls 0.87 cfs @ 3.22 fps)
Post-Developed (O-1B) NOAA 24-hr D 2-Year_Current Rainfall=3.45", P2=3.45" West Orange HydroCAD_Post Printed 5/13/2024 Page 77 Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Pond 13P: SD-25, SD-26 Hydrograph 0.95 Inflow Area=1.863 ac Peak Elev=580.86' Storage=0.000 af 18.0" Round Culvert n=0.011 L=29.4' S=0.0099 '/' 0.9 0.85 0.8 0.75 0.7 0.65 Flow (cfs) Inflow Primary 0.87 cfs 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.87 cfs 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_Current Rainfall=3.45", P2=3.45" 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 0.00 0.01 0.01 0.01 0.02 0.02 0.02 0.03 0.03 0.04 0.05 0.06 0.08 0.11 0.16 0.25 0.44 0.84 0.86 0.78 0.69 0.60 0.50 0.41 0.34 0.27 0.22 0.18 0.15 0.12 0.11 0.10 0.10 0.09 0.09 0.09 0.08 0.08 0.08 0.07 0.07 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 0.000 580.73 0.000 580.85 0.000 580.86 0.000 580.84 0.000 580.81 0.000 580.78 0.000 580.75 0.000 580.72 0.000 580.70 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 Primary (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.01 0.02 0.02 0.02 0.03 0.03 0.04 0.05 0.06 0.08 0.11 0.16 0.25 0.44 0.84 0.86 0.78 0.69 0.60 0.50 0.41 0.34 0.27 0.22 0.18 0.15 0.12 0.11 0.10 0.10 0.09 0.09 0.09 0.08 0.08 0.08 0.07 0.07 Printed 5/13/2024 Page 78
Post-Developed (O-1B) NOAA 24-hr D 2-Year_Current Rainfall=3.45", P2=3.45" West Orange HydroCAD_Post Printed 5/13/2024 Page 79 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 > 2.19" for 2-Year_Current event Inflow = 0.73 cfs @ 12.81 hrs, Volume= 0.296 af Outflow = 0.73 cfs @ 12.81 hrs, Volume= 0.296 af, Atten= 0%, Lag= 0.1 min Primary = 0.73 cfs @ 12.81 hrs, Volume= 0.296 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= 585.28' @ 12.81 hrs Surf.Area= 0.001 ac Storage= 0.000 af Plug-Flow detention time= 0.1 min calculated for 0.296 af (100% of inflow) Center-of-Mass det. time= 0.1 min ( 878.1 - 878.0 ) 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=0.73 cfs @ 12.81 hrs HW=585.28' TW=580.86' (Dynamic Tailwater) 1=SD-24 (Orifice Controls 0.73 cfs @ 2.16 fps) Pond 14P: SD-24 Hydrograph 0.8 Inflow Primary 0.73 cfs Inflow Area=1.622 ac Peak Elev=585.28' Storage=0.000 af 0.73 cfs 0.75 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
Post-Developed (O-1B) West Orange HydroCAD_Post NOAA 24-hr D 2-Year_Current Rainfall=3.45", P2=3.45" 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 0.00 0.01 0.01 0.01 0.01 0.02 0.02 0.02 0.03 0.03 0.04 0.05 0.07 0.10 0.14 0.21 0.35 0.69 0.72 0.67 0.60 0.53 0.46 0.38 0.31 0.25 0.20 0.16 0.13 0.11 0.10 0.09 0.08 0.08 0.08 0.07 0.07 0.07 0.07 0.06 0.06 Storage Elevation (acre-feet) (feet) 0.000 584.88 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 0.000 584.91 0.000 584.92 0.000 584.93 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 0.000 585.00 0.000 585.02 0.000 585.05 0.000 585.09 0.000 585.15 0.000 585.27 0.000 585.28 0.000 585.26 0.000 585.24 0.000 585.22 0.000 585.19 0.000 585.16 0.000 585.14 0.000 585.11 0.000 585.09 0.000 585.06 0.000 585.05 0.000 585.03 0.000 585.02 0.000 585.01 0.000 585.01 0.000 585.01 0.000 585.01 0.000 585.00 0.000 585.00 0.000 585.00 0.000 585.00 0.000 584.99 0.000 584.99 Primary (cfs) 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 0.02 0.02 0.02 0.03 0.03 0.04 0.05 0.07 0.10 0.14 0.21 0.35 0.69 0.72 0.67 0.60 0.53 0.46 0.38 0.31 0.25 0.20 0.16 0.13 0.11 0.10 0.09 0.08 0.08 0.08 0.07 0.07 0.07 0.07 0.06 0.06 Printed 5/13/2024 Page 80
Post-Developed (O-1B) NOAA 24-hr D 2-Year_Current Rainfall=3.45", P2=3.45" West Orange HydroCAD_Post Printed 5/13/2024 Page 81 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 > 2.18" for 2-Year_Current event Inflow = 0.59 cfs @ 12.83 hrs, Volume= 0.237 af Outflow = 0.59 cfs @ 12.83 hrs, Volume= 0.237 af, Atten= 0%, Lag= 0.1 min Primary = 0.59 cfs @ 12.83 hrs, Volume= 0.237 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= 587.16' @ 12.83 hrs Surf.Area= 0.000 ac Storage= 0.000 af Plug-Flow detention time= 0.1 min calculated for 0.237 af (100% of inflow) Center-of-Mass det. time= 0.1 min ( 878.9 - 878.9 ) 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=0.59 cfs @ 12.83 hrs HW=587.16' TW=585.28' (Dynamic Tailwater) 1=SD-23 (Orifice Controls 0.59 cfs @ 2.04 fps) Pond 17P: SD-23 Hydrograph 0.65 Inflow Primary 0.59 cfs Inflow Area=1.305 ac Peak Elev=587.16' Storage=0.000 af 0.59 cfs 0.6 0.55 0.5 Flow (cfs) 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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