241220_42 ERW_Stormwater Report FULL

NOAA 24-hr D 2-Year Rainfall=3.44"241220_42 ERW Waymaker Printed 12/20/2024Prepared by Colliers Engineering & Design Page 7HydroCAD® 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=1.45"Subcatchment PR 1A-P: Flow Length=203' Tc=5.9 min CN=78 Runoff=0.50 cfs 0.037 af Runoff Area=36,906 sf 100.00% Impervious Runoff Depth=3.21"Subcatchment PR 1B-I: Flow Length=136' Tc=1.5 min CN=98 Runoff=3.04 cfs 0.226 af Runoff Area=77,195 sf 0.00% Impervious Runoff Depth=1.52"Subcatchment PR 1B-P: Flow Length=180' Tc=7.5 min CN=79 Runoff=2.95 cfs 0.224 af Runoff Area=7,405 sf 0.00% Impervious Runoff Depth=1.32"Subcatchment PR 2-P: Flow Length=84' Slope=0.0833 '/' Tc=4.6 min CN=76 Runoff=0.26 cfs 0.019 af Inflow=5.32 cfs 0.451 afReach 10R: Outflow=5.32 cfs 0.451 af Inflow=1.40 cfs 0.256 afReach DP1-PR: Outflow=1.40 cfs 0.256 af Inflow=0.26 cfs 0.019 afReach DP2-PR: Outflow=0.26 cfs 0.019 af Peak Elev=14.76' Storage=0.167 af Inflow=5.32 cfs 0.451 afPond BASIN: Discarded=0.13 cfs 0.232 af Primary=1.20 cfs 0.219 af Outflow=1.33 cfs 0.451 af Total Runoff Area = 3.092 ac Runoff Volume = 0.506 af Average Runoff Depth = 1.96" 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.