250701_42 ERW_Stormwater Report

NJ DEP 2-hr WQ Rainfall=1.25" 250624_42 ERW Waymaker Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 7/1/2025 Page 43 Time span=0.00-72.00 hrs, dt=0.05 hrs, 1441 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment PR 1A-P: Runoff Area=13,167 sf 0.00% Impervious Runoff Depth=0.13" Flow Length=203' Tc=5.9 min CN=78 Runoff=0.11 cfs 0.003 af Subcatchment PR 1B-I: Runoff Area=36,906 sf 100.00% Impervious Runoff Depth=1.03" Flow Length=136' Tc=1.5 min CN=98 Runoff=2.63 cfs 0.073 af Subcatchment PR 1B-P: Runoff Area=77,195 sf 0.00% Impervious Runoff Depth=0.15" Flow Length=180' Tc=7.5 min CN=79 Runoff=0.68 cfs 0.023 af Reach 10R: Inflow=2.67 cfs 0.096 af Outflow=2.67 cfs 0.096 af Reach DP1-PR: Inflow=0.11 cfs 0.003 af Outflow=0.11 cfs 0.003 af Pond BASIN: Peak Elev=15.96' Storage=0.052 af Inflow=2.67 cfs 0.096 af Discarded=0.48 cfs 0.096 af Primary=0.00 cfs 0.000 af Outflow=0.48 cfs 0.096 af Total Runoff Area = 2.922 ac Runoff Volume = 0.099 af Average Runoff Depth = 0.41" 71.00% Pervious = 2.074 ac 29.00% Impervious = 0.847 ac