240916_40 ERW Stormwater Report FULL

NOAA 24-hr D 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 22HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment PR 2A-P: Runoff = 0.21 cfs @ 12.09 hrs, Volume= 0.014 af, Depth= 1.20" Routed to Reach DP2 : CHANNEL Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NOAA 24-hr D 2-Year Rainfall=3.44" Area (sf) CN Description 6,039 74 >75% Grass cover, Good, HSG C 6,039 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.7 81 0.3000 0.50 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" Subcatchment PR 2A-P: Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 0.23 0.22 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 NOAA 24-hr D 2-Year Rainfall=3.44" Runoff Area=6,039 sf Runoff Volume=0.014 af Runoff Depth=1.20" Flow Length=81' Slope=0.3000 '/' Tc=2.7 min CN=74 0.21 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.