J_2024 05 09_West Orange Stormwater Management Plan

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 47 Time span=0.00-24.00 hrs, dt=0.0100 hrs, 2401 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 5S: PO-DA C Runoff Area=24,698 sf 17.46% Impervious Runoff Depth>2.14" Flow Length=164' Tc=18.5 min CN=WQ Runoff=0.93 cfs 0.101 af Subcatchment 7S: PO-DA E Runoff Area=15,246 sf 31.71% Impervious Runoff Depth>2.31" Flow Length=175' Tc=15.6 min CN=WQ Runoff=0.65 cfs 0.067 af Subcatchment 9S: PO-DA G Runoff Area=16,902 sf 28.87% Impervious Runoff Depth>2.26" Flow Length=175' Tc=23.3 min CN=WQ Runoff=0.59 cfs 0.073 af Subcatchment 11S: PO-DA I Runoff Area=10,507 sf 27.64% Impervious Runoff Depth>2.25" Flow Length=120' Tc=6.5 min CN=WQ Runoff=0.59 cfs 0.045 af Runoff Area=13,809 sf 38.48% Impervious Runoff Depth>2.35" Flow Length=96' Slope=0.0336 '/' Tc=5.4 min CN=WQ Runoff=0.83 cfs 0.062 af Subcatchment 12S: PO-DA J Pond 1P: BR-01 Peak Elev=598.20' Storage=1,470 cf Inflow=0.93 cfs 0.101 af Outflow=0.24 cfs 0.099 af Pond 2P: BR-02 Peak Elev=599.40' Storage=874 cf Inflow=0.65 cfs 0.067 af Outflow=0.19 cfs 0.066 af Pond 3P: BR-03 Peak Elev=595.19' Storage=1,059 cf Inflow=0.59 cfs 0.073 af Outflow=0.17 cfs 0.071 af Pond 5P: BR-05 Peak Elev=594.69' Storage=567 cf Inflow=0.59 cfs 0.045 af Outflow=0.15 cfs 0.044 af Pond 6P: BR-04 Peak Elev=595.53' Storage=970 cf Inflow=0.83 cfs 0.062 af Outflow=0.14 cfs 0.060 af Pond 8P: O-1B Inflow=0.87 cfs 0.341 af Primary=0.87 cfs 0.341 af Pond 13P: SD-25, SD-26 Peak Elev=580.86' Storage=0.000 af Inflow=0.87 cfs 0.341 af 18.0" Round Culvert n=0.011 L=29.4' S=0.0099 '/' Outflow=0.87 cfs 0.341 af Pond 14P: SD-24 Peak Elev=585.28' Storage=0.000 af Inflow=0.73 cfs 0.296 af Outflow=0.73 cfs 0.296 af Pond 17P: SD-23 Peak Elev=587.16' Storage=0.000 af Inflow=0.59 cfs 0.237 af Outflow=0.59 cfs 0.237 af Pond 18P: SD-22 Peak Elev=588.77' Storage=0.000 af Inflow=0.42 cfs 0.166 af Outflow=0.42 cfs 0.166 af Pond 19P: SD-21 Peak Elev=590.85' Storage=0.000 af Inflow=0.24 cfs 0.099 af Outflow=0.24 cfs 0.099 af