240916_40 ERW Stormwater Report FULL

NOAA 24-hr D 100-Year Rainfall=8.66"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 138HydroCAD® 10.20-2g s/n 04431 © 2022 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=2,878 sf 100.00% Impervious Runoff Depth=8.42"Subcatchment 1S: 2BP-I Flow Length=75' Slope=0.0140 '/' Tc=1.1 min CN=98 Runoff=0.60 cfs 0.046 af Runoff Area=9,508 sf 100.00% Impervious Runoff Depth=8.42"Subcatchment EX 1-I: Flow Length=149' Tc=1.6 min CN=98 Runoff=1.98 cfs 0.153 af Runoff Area=34,310 sf 0.00% Impervious Runoff Depth=5.64"Subcatchment EX 1-P: Flow Length=233' Tc=10.4 min CN=75 Runoff=4.28 cfs 0.370 af Runoff Area=33,427 sf 0.00% Impervious Runoff Depth=5.52"Subcatchment EX 2-P: Flow Length=251' Tc=10.1 min CN=74 Runoff=4.14 cfs 0.353 af Runoff Area=12,817 sf 0.00% Impervious Runoff Depth=5.76"Subcatchment EX 3 - P: Flow Length=109' Tc=7.8 min CN=76 Runoff=1.80 cfs 0.141 af Runoff Area=2,919 sf 100.00% Impervious Runoff Depth=8.42"Subcatchment PR 1A-I: Flow Length=149' Tc=1.6 min CN=98 Runoff=0.61 cfs 0.047 af Runoff Area=21,722 sf 0.00% Impervious Runoff Depth=5.52"Subcatchment PR 1A-P: Flow Length=395' Tc=10.5 min CN=74 Runoff=2.65 cfs 0.229 af Runoff Area=6,622 sf 0.00% Impervious Runoff Depth=7.34"Subcatchment PR 1B-P: Tc=6.0 min CN=89 Runoff=1.16 cfs 0.093 af Runoff Area=6,039 sf 0.00% Impervious Runoff Depth=5.52"Subcatchment PR 2A-P: Flow Length=81' Slope=0.3000 '/' Tc=2.7 min CN=74 Runoff=0.98 cfs 0.064 af Runoff Area=5,659 sf 100.00% Impervious Runoff Depth=8.42"Subcatchment PR 2C-I: Flow Length=86' Slope=0.0230 '/' Tc=1.0 min CN=98 Runoff=1.19 cfs 0.091 af Runoff Area=21,408 sf 0.00% Impervious Runoff Depth=5.52"Subcatchment PR 2C-P: Flow Length=100' Slope=0.0200 '/' Tc=9.4 min CN=74 Runoff=2.72 cfs 0.226 af Runoff Area=10,406 sf 0.00% Impervious Runoff Depth=5.52"Subcatchment PR 3 - P: Flow Length=109' Tc=7.8 min CN=74 Runoff=1.41 cfs 0.110 af Runoff Area=8,642 sf 100.00% Impervious Runoff Depth=8.42"Subcatchment PR-2B-I: Flow Length=75' Slope=0.0140 '/' Tc=1.1 min CN=98 Runoff=1.81 cfs 0.139 af Runoff Area=1,446 sf 0.00% Impervious Runoff Depth=5.52"Subcatchment PR-2B-P: Flow Length=114' Tc=8.0 min CN=74 Runoff=0.19 cfs 0.015 af Inflow=5.22 cfs 0.523

Tc=1.1 min CN=98 Runoff=1.81 cfs 0.139 af Runoff Area=1,446 sf 0.00% Impervious Runoff Depth=5.52"Subcatchment PR-2B-P: Flow Length=114' Tc=8.0 min CN=74 Runoff=0.19 cfs 0.015 af Inflow=5.22 cfs 0.523 afReach 1R: TOP Outflow=5.22 cfs 0.523 af Inflow=9.04 cfs 0.876 afReach 2R: CHANNEL Outflow=9.04 cfs 0.876 af Inflow=10.82 cfs 1.018 afReach 3R: TOTAL Outflow=10.82 cfs 1.018 af This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.