241220_42 ERW_Stormwater Report FULL

NOAA 24-hr D 10-Year Rainfall=5.22"241220_42 ERW Waymaker Printed 12/20/2024Prepared by Colliers Engineering & Design Page 17HydroCAD® 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=2.90"Subcatchment PR 1A-P: Flow Length=203' Tc=5.9 min CN=78 Runoff=1.00 cfs 0.073 af Runoff Area=36,906 sf 100.00% Impervious Runoff Depth=4.98"Subcatchment PR 1B-I: Flow Length=136' Tc=1.5 min CN=98 Runoff=4.63 cfs 0.352 af Runoff Area=77,195 sf 0.00% Impervious Runoff Depth=2.99"Subcatchment PR 1B-P: Flow Length=180' Tc=7.5 min CN=79 Runoff=5.79 cfs 0.442 af Runoff Area=7,405 sf 0.00% Impervious Runoff Depth=2.72"Subcatchment PR 2-P: Flow Length=84' Slope=0.0833 '/' Tc=4.6 min CN=76 Runoff=0.55 cfs 0.039 af Inflow=9.28 cfs 0.794 afReach 10R: Outflow=9.28 cfs 0.794 af Inflow=4.42 cfs 0.610 afReach DP1-PR: Outflow=4.42 cfs 0.610 af Inflow=0.55 cfs 0.039 afReach DP2-PR: Outflow=0.55 cfs 0.039 af Peak Elev=15.72' Storage=0.258 af Inflow=9.28 cfs 0.794 afPond BASIN: Discarded=0.16 cfs 0.257 af Primary=3.90 cfs 0.537 af Outflow=4.05 cfs 0.794 af Total Runoff Area = 3.092 ac Runoff Volume = 0.905 af Average Runoff Depth = 3.51" 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.