21 Stormwater Mgmt Report_082025

NOAA 24-hr D 100-Year-Future Rainfall=11.52", 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 26 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=11.28" Flow Length=441' Tc=3.1 min CN=0/98 Runoff=14.80 cfs 54,862 cf Subcatchment E1i: Existing Impervious Runoff Area=0.020 ac 0.00% Impervious Runoff Depth=2.93" Flow Length=526' Tc=8.2 min CN=39/0 Runoff=0.05 cfs 213 cf Subcatchment E1p: Existing Pervious Subcatchment P1i: Proposed Impervious Runoff Area=1.000 ac 100.00% Impervious Runoff Depth=11.28" Flow Length=443' Tc=3.0 min CN=0/98 Runoff=11.05 cfs 40,942 cf Runoff Area=0.270 ac 100.00% Impervious Runoff Depth=11.28" Flow Length=30' Slope=0.0150 '/' Tc=0.5 min CN=0/98 Runoff=2.60 cfs 11,054 cf Subcatchment P1i(pp): Proposed Subcatchment P1p: Proposed Pervious Pond PP1: Pervious Pavement Runoff Area=0.090 ac 0.00% Impervious Runoff Depth=2.93" Flow Length=528' Tc=8.1 min CN=39/0 Runoff=0.23 cfs 957 cf Peak Elev=367.26' Storage=2,077 cf Inflow=2.60 cfs 11,054 cf Outflow=2.20 cfs 10,030 cf Link E1: EDA 1A Inflow=14.84 cfs 55,074 cf Primary=14.84 cfs 55,074 cf Link P1: PDA 1A Inflow=13.41 cfs 51,929 cf Primary=13.41 cfs 51,929 cf Total Runoff Area = 118,483 sf Runoff Volume = 108,028 cf Average Runoff Depth = 10.94" 4.04% Pervious = 4,792 sf 95.96% Impervious = 113,692 sf