240916_40 ERW Stormwater Report FULL

NOAA 24-hr D 10-Year Rainfall=5.22"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 121HydroCAD® 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 = 3.98" for 10-Year event Inflow = 0.65 cfs @ 12.13 hrs, Volume= 0.050 af Outflow = 0.08 cfs @ 12.91 hrs, Volume= 0.050 af, Atten= 88%, Lag= 47.0 min Discarded = 0.08 cfs @ 12.91 hrs, Volume= 0.050 af Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 624.68' @ 12.91 hrs Surf.Area= 0.151 ac Storage= 0.016 af Plug-Flow detention time= 59.9 min calculated for 0.050 af (100% of inflow) Center-of-Mass det. time= 59.9 min ( 858.6 - 798.7 ) 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 @ 12.91 hrs HW=624.68' (Free Discharge) 1=Exfiltration ( Controls 0.08 cfs) Pond 2P: Pervious Pavers Inflow Discarded Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=0.152 ac Peak Elev=624.68' Storage=0.016 af 0.65 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.