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 54HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Pond 2P: Pervious Pavers Inflow Area = 0.152 ac, 0.00% Impervious, Inflow Depth = 2.30" for 2-Year event Inflow = 0.39 cfs @ 12.13 hrs, Volume= 0.029 af Outflow = 0.08 cfs @ 12.55 hrs, Volume= 0.029 af, Atten= 80%, Lag= 25.4 min Discarded = 0.08 cfs @ 12.55 hrs, Volume= 0.029 af Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 624.53' @ 12.55 hrs Surf.Area= 0.151 ac Storage= 0.007 af Plug-Flow detention time= 24.4 min calculated for 0.029 af (100% of inflow) Center-of-Mass det. time= 24.4 min ( 840.1 - 815.8 ) Volume Invert Avail.Storage Storage Description #1 624.42' 0.061 af 65.91'W x 100.00'L x 1.00'H Prismatoid 0.151 af Overall x 40.0% Voids Device Routing Invert Outlet Devices #1 Discarded 624.42' 0.500 in/hr Exfiltration over Surface area Conductivity to Groundwater Elevation = 619.00' Discarded OutFlow Max=0.08 cfs @ 12.55 hrs HW=624.53' (Free Discharge) 1=Exfiltration ( Controls 0.08 cfs) Pond 2P: Pervious Pavers Inflow Discarded Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=0.152 ac Peak Elev=624.53' Storage=0.007 af 0.39 cfs 0.08 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.