241018_42 ERW_Stormwater Report_compiled

NOAA 24-hr D 2-Year Rainfall=3.44"240924_42 ERW Waymaker Printed 10/17/2024Prepared by Colliers Engineering & Design Page 11HydroCAD® 10.20-4b s/n 04431 © 2023 HydroCAD Software Solutions LLC Summary for Subcatchment PDA-1C(IMPERV): (new Subcat) [49] Hint: Tc<2dt may require smaller dt Runoff = 0.97 cfs @ 12.06 hrs, Volume= 0.072 af, Depth= 3.21" Routed to Reach PDA-1C : (new Reach) 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 11,760 98 Roofs, HSG C 11,760 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.0 Direct Entry, Subcatchment PDA-1C(IMPERV): (new Subcat) Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 1 0 NOAA 24-hr D 2-Year Rainfall=3.44" Runoff Area=11,760 sf Runoff Volume=0.072 af Runoff Depth=3.21" Tc=1.0 min CN=98 0.97 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.