241220_42 ERW_Stormwater Report FULL

NOAA 24-hr D 25-Year Rainfall=6.44"241220_42 ERW Waymaker Printed 12/20/2024Prepared by Colliers Engineering & Design Page 27HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC 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 Runoff Area=13,167 sf 0.00% Impervious Runoff Depth=3.97"Subcatchment PR 1A-P: Flow Length=203' Tc=5.9 min CN=78 Runoff=1.36 cfs 0.100 af Runoff Area=36,906 sf 100.00% Impervious Runoff Depth=6.20"Subcatchment PR 1B-I: Flow Length=136' Tc=1.5 min CN=98 Runoff=5.73 cfs 0.438 af Runoff Area=77,195 sf 0.00% Impervious Runoff Depth=4.07"Subcatchment PR 1B-P: Flow Length=180' Tc=7.5 min CN=79 Runoff=7.82 cfs 0.602 af Runoff Area=7,405 sf 0.00% Impervious Runoff Depth=3.76"Subcatchment PR 2-P: Flow Length=84' Slope=0.0833 '/' Tc=4.6 min CN=76 Runoff=0.76 cfs 0.053 af Inflow=12.08 cfs 1.040 afReach 10R: Outflow=12.08 cfs 1.040 af Inflow=6.00 cfs 0.870 afReach DP1-PR: Outflow=6.00 cfs 0.870 af Inflow=0.76 cfs 0.053 afReach DP2-PR: Outflow=0.76 cfs 0.053 af Peak Elev=16.44' Storage=0.318 af Inflow=12.08 cfs 1.040 afPond BASIN: Discarded=0.18 cfs 0.270 af Primary=5.14 cfs 0.770 af Outflow=5.32 cfs 1.040 af Total Runoff Area = 3.092 ac Runoff Volume = 1.193 af Average Runoff Depth = 4.63" 72.60% Pervious = 2.244 ac 27.40% Impervious = 0.847 ac This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.