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S:\plowe\cad\23proj\2129 Jerry Carlson Little Canada\2129 MISC\Round 1 - 12.28.23\ <br />MSE 24-hr 3 10-Year Rainfall=4.19"2129 Sunrise Over Gervais - Proposed (12-28-2023) <br /> Printed 12/28/2023Prepared by Plowe Engineering, Inc. <br />Page 12HydroCAD® 10.00-26 s/n 01574 © 2020 HydroCAD Software Solutions LLC <br />Peak Elev= 887.29' @ 12.14 hrs Surf.Area= 329 sf Storage= 51 cf <br />Flood Elev= 890.00' Surf.Area= 3,634 sf Storage= 3,989 cf <br />Plug-Flow detention time= 0.1 min calculated for 0.182 af (100% of inflow) <br />Center-of-Mass det. time= 0.1 min ( 797.8 - 797.7 ) <br />Volume Invert Avail.Storage Storage Description <br />#1 886.40' 3,989 cf Custom Stage Data (Prismatic) Listed below (Recalc) <br />Elevation Surf.Area Inc.Store Cum.Store <br />(feet) (sq-ft) (cubic-feet) (cubic-feet) <br />886.40 4 0 0 <br />887.00 6 3 3 <br />888.00 1,133 570 573 <br />889.00 2,589 1,861 2,434 <br />889.50 3,634 1,556 3,989 <br />Device Routing Invert Outlet Devices <br />#1 Discarded 886.40'0.450 in/hr Exfiltration over Surface area <br />#2 Primary 886.40'15.0" Round Culvert L= 90.0' Ke= 0.510 <br />Inlet / Outlet Invert= 886.40' / 885.00' S= 0.0156 '/' Cc= 0.900 <br />n= 0.010 PVC, smooth interior, Flow Area= 1.23 sf <br />Discarded OutFlow Max=0.00 cfs @ 12.14 hrs HW=887.29' (Free Discharge) <br />1=Exfiltration (Exfiltration Controls 0.00 cfs) <br />Primary OutFlow Max=2.96 cfs @ 12.14 hrs HW=887.29' TW=0.00' (Dynamic Tailwater) <br />2=Culvert (Inlet Controls 2.96 cfs @ 3.18 fps) <br />Summary for Pond P1: INFILTRATION BASIN <br />Inflow Area = 1.210 ac, 25.56% Impervious, Inflow Depth = 1.69" for 10-Year event <br />Inflow = 3.49 cfs @ 12.13 hrs, Volume= 0.170 af <br />Outflow = 0.20 cfs @ 13.40 hrs, Volume= 0.170 af, Atten= 94%, Lag= 76.6 min <br />Discarded = 0.05 cfs @ 13.40 hrs, Volume= 0.133 af <br />Primary = 0.15 cfs @ 13.40 hrs, Volume= 0.038 af <br />Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af <br />Routing by Dyn-Stor-Ind method, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs <br />Peak Elev= 889.71' @ 13.40 hrs Surf.Area= 4,853 sf Storage= 4,321 cf <br />Plug-Flow detention time= (not calculated: outflow precedes inflow) <br />Center-of-Mass det. time= 657.5 min ( 1,444.0 - 786.5 ) <br />Volume Invert Avail.Storage Storage Description <br />#1 888.50' 9,136 cf Custom Stage Data (Prismatic) Listed below (Recalc)