21 Stormwater Mgmt Report_082025

NOAA 24-hr D 10-Year-Future Rainfall=6.37", 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 16 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=6.13" Flow Length=441' Tc=3.1 min CN=0/98 Runoff=8.17 cfs 29,825 cf Subcatchment E1i: Existing Impervious Subcatchment E1p: Existing Pervious Runoff Area=0.020 ac 0.00% Impervious Runoff Depth=0.56" Flow Length=526' Tc=8.2 min CN=39/0 Runoff=0.00 cfs 40 cf Subcatchment P1i: Proposed Impervious Runoff Area=1.000 ac 100.00% Impervious Runoff Depth=6.13" Flow Length=443' Tc=3.0 min CN=0/98 Runoff=6.10 cfs 22,257 cf Runoff Area=0.270 ac 100.00% Impervious Runoff Depth=6.13" Flow Length=30' Slope=0.0150 '/' Tc=0.5 min CN=0/98 Runoff=1.43 cfs 6,009 cf Subcatchment P1i(pp): Proposed Subcatchment P1p: Proposed Pervious Pond PP1: Pervious Pavement Runoff Area=0.090 ac 0.00% Impervious Runoff Depth=0.56" Flow Length=528' Tc=8.1 min CN=39/0 Runoff=0.02 cfs 182 cf Peak Elev=367.15' Storage=1,706 cf Inflow=1.43 cfs 6,009 cf Outflow=1.15 cfs 4,985 cf Link E1: EDA 1A Inflow=8.17 cfs 29,865 cf Primary=8.17 cfs 29,865 cf Link P1: PDA 1A Inflow=7.23 cfs 27,424 cf Primary=7.23 cfs 27,424 cf Total Runoff Area = 118,483 sf Runoff Volume = 58,314 cf Average Runoff Depth = 5.91" 4.04% Pervious = 4,792 sf 95.96% Impervious = 113,692 sf