J_2024 05 09_West Orange Stormwater Management Plan

Post-Developed (O-1B) West Orange HydroCAD_Post NOAA 24-hr D 100-Year_Current Rainfall=9.23", P2=3.45" Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Printed 5/13/2024 Page 207 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>7.59" Flow Length=164' Tc=18.5 min CN=WQ Runoff=3.18 cfs 0.359 af Subcatchment 7S: PO-DA E Runoff Area=15,246 sf 31.71% Impervious Runoff Depth>7.80" Flow Length=175' Tc=15.6 min CN=WQ Runoff=2.14 cfs 0.228 af Subcatchment 9S: PO-DA G Runoff Area=16,902 sf 28.87% Impervious Runoff Depth>7.72" Flow Length=175' Tc=23.3 min CN=WQ Runoff=1.97 cfs 0.250 af Subcatchment 11S: PO-DA I Runoff Area=10,507 sf 27.64% Impervious Runoff Depth>7.73" Flow Length=120' Tc=6.5 min CN=WQ Runoff=1.96 cfs 0.155 af Runoff Area=13,809 sf 38.48% Impervious Runoff Depth>7.84" Flow Length=96' Slope=0.0336 '/' Tc=5.4 min CN=WQ Runoff=2.68 cfs 0.207 af Subcatchment 12S: PO-DA J Pond 1P: BR-01 Peak Elev=601.35' Storage=5,218 cf Inflow=3.18 cfs 0.359 af Outflow=1.24 cfs 0.354 af Pond 2P: BR-02 Peak Elev=601.42' Storage=2,112 cf Inflow=2.14 cfs 0.228 af Outflow=1.85 cfs 0.225 af Pond 3P: BR-03 Peak Elev=598.43' Storage=4,464 cf Inflow=1.97 cfs 0.250 af Outflow=0.34 cfs 0.246 af Pond 5P: BR-05 Peak Elev=597.66' Storage=2,328 cf Inflow=1.96 cfs 0.155 af Outflow=0.32 cfs 0.154 af Pond 6P: BR-04 Peak Elev=598.36' Storage=3,691 cf Inflow=2.68 cfs 0.207 af Outflow=0.32 cfs 0.203 af Pond 8P: O-1B Inflow=3.61 cfs 1.181 af Primary=3.61 cfs 1.181 af Pond 13P: SD-25, SD-26 Peak Elev=581.41' Storage=0.000 af Inflow=3.61 cfs 1.181 af 18.0" Round Culvert n=0.011 L=29.4' S=0.0099 '/' Outflow=3.61 cfs 1.181 af Pond 14P: SD-24 Peak Elev=585.82' Storage=0.001 af Inflow=3.29 cfs 1.028 af Outflow=3.29 cfs 1.028 af Pond 17P: SD-23 Peak Elev=587.69' Storage=0.001 af Inflow=2.99 cfs 0.825 af Outflow=2.99 cfs 0.825 af Pond 18P: SD-22 Peak Elev=589.45' Storage=0.001 af Inflow=2.68 cfs 0.579 af Outflow=2.68 cfs 0.579 af Pond 19P: SD-21 Peak Elev=591.19' Storage=0.000 af Inflow=1.24 cfs 0.354 af Outflow=1.24 cfs 0.354 af