J_2024 05 09_West Orange Stormwater Management Plan

Post-Developed (O-1B) West Orange HydroCAD_Post NOAA 24-hr D 10-Year_Future Rainfall=6.36", P2=4.07" Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Printed 5/13/2024 Page 167 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>4.83" Flow Length=164' Tc=17.1 min CN=WQ Runoff=2.13 cfs 0.228 af Subcatchment 7S: PO-DA E Runoff Area=15,246 sf 31.71% Impervious Runoff Depth>5.03" Flow Length=175' Tc=14.4 min CN=WQ Runoff=1.44 cfs 0.147 af Subcatchment 9S: PO-DA G Runoff Area=16,902 sf 28.87% Impervious Runoff Depth>4.96" Flow Length=175' Tc=21.5 min CN=WQ Runoff=1.34 cfs 0.160 af Subcatchment 11S: PO-DA I Runoff Area=10,507 sf 27.64% Impervious Runoff Depth>4.96" Flow Length=120' Tc=6.0 min CN=WQ Runoff=1.30 cfs 0.100 af Runoff Area=13,809 sf 38.48% Impervious Runoff Depth>5.06" Flow Length=96' Slope=0.0336 '/' Tc=4.9 min CN=WQ Runoff=1.79 cfs 0.134 af Subcatchment 12S: PO-DA J Pond 1P: BR-01 Peak Elev=600.58' Storage=3,860 cf Inflow=2.13 cfs 0.228 af Outflow=0.42 cfs 0.225 af Pond 2P: BR-02 Peak Elev=601.23' Storage=1,812 cf Inflow=1.44 cfs 0.147 af Outflow=0.74 cfs 0.145 af Pond 3P: BR-03 Peak Elev=597.57' Storage=2,589 cf Inflow=1.34 cfs 0.160 af Outflow=0.31 cfs 0.158 af Pond 5P: BR-05 Peak Elev=596.23' Storage=1,394 cf Inflow=1.30 cfs 0.100 af Outflow=0.25 cfs 0.098 af Pond 6P: BR-04 Peak Elev=596.69' Storage=2,285 cf Inflow=1.79 cfs 0.134 af Outflow=0.23 cfs 0.131 af Pond 8P: O-1B Inflow=1.81 cfs 0.756 af Primary=1.81 cfs 0.756 af Pond 13P: SD-25, SD-26 Peak Elev=581.08' Storage=0.000 af Inflow=1.81 cfs 0.756 af 18.0" Round Culvert n=0.011 L=29.4' S=0.0099 '/' Outflow=1.81 cfs 0.756 af Pond 14P: SD-24 Peak Elev=585.49' Storage=0.000 af Inflow=1.56 cfs 0.658 af Outflow=1.56 cfs 0.658 af Pond 17P: SD-23 Peak Elev=587.36' Storage=0.000 af Inflow=1.34 cfs 0.528 af Outflow=1.34 cfs 0.528 af Pond 18P: SD-22 Peak Elev=588.99' Storage=0.000 af Inflow=1.08 cfs 0.370 af Outflow=1.08 cfs 0.370 af Pond 19P: SD-21 Peak Elev=590.93' Storage=0.000 af Inflow=0.42 cfs 0.225 af Outflow=0.42 cfs 0.225 af