21 Stormwater Mgmt Report_082025

NOAA 24-hr D 2-Year-Future Rainfall=4.09", P2=4.09" NJA230139 - REV 0 Prepared by Bohler HydroCAD® 10.20-5c s/n 03478 © 2023 HydroCAD Software Solutions LLC Printed 8/6/2025 Page 6 Time span=0.00-72.00 hrs, dt=0.10 hrs, 721 points x 9 Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv. Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Runoff Area=1.340 ac 100.00% Impervious Runoff Depth=3.85" Flow Length=441' Tc=3.1 min CN=0/98 Runoff=5.22 cfs 18,751 cf Subcatchment E1i: Existing Impervious Subcatchment E1p: Existing Pervious Runoff Area=0.020 ac 0.00% Impervious Runoff Depth=0.06" Flow Length=526' Tc=8.2 min CN=39/0 Runoff=0.00 cfs 4 cf Subcatchment P1i: Proposed Impervious Runoff Area=1.000 ac 100.00% Impervious Runoff Depth=3.85" Flow Length=443' Tc=3.0 min CN=0/98 Runoff=3.90 cfs 13,993 cf Runoff Area=0.270 ac 100.00% Impervious Runoff Depth=3.85" Flow Length=30' Slope=0.0150 '/' Tc=0.5 min CN=0/98 Runoff=0.92 cfs 3,778 cf Subcatchment P1i(pp): Proposed Subcatchment P1p: Proposed Pervious Pond PP1: Pervious Pavement Runoff Area=0.090 ac 0.00% Impervious Runoff Depth=0.06" Flow Length=528' Tc=8.1 min CN=39/0 Runoff=0.00 cfs 18 cf Peak Elev=367.09' Storage=1,510 cf Inflow=0.92 cfs 3,778 cf Outflow=0.70 cfs 2,754 cf Link E1: EDA 1A Inflow=5.22 cfs 18,755 cf Primary=5.22 cfs 18,755 cf Link P1: PDA 1A Inflow=4.57 cfs 16,765 cf Primary=4.57 cfs 16,765 cf Total Runoff Area = 118,483 sf Runoff Volume = 36,545 cf Average Runoff Depth = 3.70" 4.04% Pervious = 4,792 sf 95.96% Impervious = 113,692 sf