J_2024 05 09_West Orange Stormwater Management Plan

Post-Developed (O-2) 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 18 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 16S: PO-DA N Pond 25P: O-2 Runoff Area=57,457 sf 15.92% Impervious Runoff Depth>2.21" Flow Length=452' Tc=11.0 min CN=WQ Runoff=2.75 cfs 0.243 af Inflow=2.75 cfs 0.243 af Primary=2.75 cfs 0.243 af Total Runoff Area = 1.319 ac Runoff Volume = 0.243 af Average Runoff Depth = 2.21" 84.08% Pervious = 1.109 ac 15.92% Impervious = 0.210 ac