21 Stormwater Mgmt Report_082025

NOAA 24-hr D 100-Year-Current Rainfall=9.18", P2=3.47" 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=8.94" Flow Length=441' Tc=3.2 min CN=0/98 Runoff=11.78 cfs 43,484 cf Subcatchment E1i: Existing Impervious Subcatchment E1p: Existing Pervious Runoff Area=0.020 ac 0.00% Impervious Runoff Depth=1.69" Flow Length=526' Tc=8.6 min CN=39/0 Runoff=0.03 cfs 123 cf Subcatchment P1i: Proposed Impervious Runoff Area=1.000 ac 100.00% Impervious Runoff Depth=8.94" Flow Length=443' Tc=3.1 min CN=0/98 Runoff=8.80 cfs 32,451 cf Runoff Area=0.270 ac 100.00% Impervious Runoff Depth=8.94" Flow Length=30' Slope=0.0150 '/' Tc=0.5 min CN=0/98 Runoff=2.07 cfs 8,762 cf Subcatchment P1i(pp): Proposed Subcatchment P1p: Proposed Pervious Pond PP1: Pervious Pavement Runoff Area=0.090 ac 0.00% Impervious Runoff Depth=1.69" Flow Length=528' Tc=8.5 min CN=39/0 Runoff=0.12 cfs 552 cf Peak Elev=367.21' Storage=1,916 cf Inflow=2.07 cfs 8,762 cf Outflow=1.72 cfs 7,737 cf Link E1: EDA 1A Inflow=11.80 cfs 43,606 cf Primary=11.80 cfs 43,606 cf Link P1: PDA 1A Inflow=10.58 cfs 40,739 cf Primary=10.58 cfs 40,739 cf Total Runoff Area = 118,483 sf Runoff Volume = 85,370 cf Average Runoff Depth = 8.65" 4.04% Pervious = 4,792 sf 95.96% Impervious = 113,692 sf