241220_42 ERW_Stormwater Report FULL

NOAA 24-hr D 100-Year Rainfall=8.66"241220_42 ERW Waymaker Printed 12/20/2024Prepared by Colliers Engineering & Design Page 37HydroCAD® 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=6.00"Subcatchment PR 1A-P: Flow Length=203' Tc=5.9 min CN=78 Runoff=2.01 cfs 0.151 af Runoff Area=36,906 sf 100.00% Impervious Runoff Depth=8.42"Subcatchment PR 1B-I: Flow Length=136' Tc=1.5 min CN=98 Runoff=7.71 cfs 0.594 af Runoff Area=77,195 sf 0.00% Impervious Runoff Depth=6.13"Subcatchment PR 1B-P: Flow Length=180' Tc=7.5 min CN=79 Runoff=11.55 cfs 0.905 af Runoff Area=7,405 sf 0.00% Impervious Runoff Depth=5.76"Subcatchment PR 2-P: Flow Length=84' Slope=0.0833 '/' Tc=4.6 min CN=76 Runoff=1.14 cfs 0.082 af Inflow=17.23 cfs 1.499 afReach 10R: Outflow=17.23 cfs 1.499 af Inflow=9.92 cfs 1.363 afReach DP1-PR: Outflow=9.92 cfs 1.363 af Inflow=1.14 cfs 0.082 afReach DP2-PR: Outflow=1.14 cfs 0.082 af Peak Elev=18.12' Storage=0.413 af Inflow=17.23 cfs 1.499 afPond BASIN: Discarded=0.23 cfs 0.287 af Primary=8.95 cfs 1.212 af Outflow=9.19 cfs 1.499 af Total Runoff Area = 3.092 ac Runoff Volume = 1.732 af Average Runoff Depth = 6.72" 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.