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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 2-Year Rainfall=2.81"2129 Sunrise Over Gervais - Proposed (12-28-2023) <br /> Printed 12/28/2023Prepared by Plowe Engineering, Inc. <br />Page 7HydroCAD® 10.00-26 s/n 01574 © 2020 HydroCAD Software Solutions LLC <br />Elevation Surf.Area Inc.Store Cum.Store <br />(feet) (sq-ft) (cubic-feet) (cubic-feet) <br />888.50 2,313 0 0 <br />889.00 3,334 1,412 1,412 <br />889.50 4,384 1,930 3,341 <br />890.00 5,489 2,468 5,810 <br />890.55 6,607 3,326 9,136 <br />Device Routing Invert Outlet Devices <br />#1 Primary 888.60'12.0" Round Culvert L= 10.0' Ke= 0.510 <br />Inlet / Outlet Invert= 888.60' / 888.50' S= 0.0100 '/' Cc= 0.900 <br />n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf <br />#2 Device 1 889.50'8.0" Vert. Orifice C= 0.600 <br />#3 Discarded 888.50'0.450 in/hr Exfiltration over Surface area <br />#4 Secondary 890.50'4.0' long x 8.0' breadth Broad-Crested Rectangular Weir <br />Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 <br />2.50 3.00 3.50 4.00 4.50 5.00 5.50 <br />Coef. (English) 2.43 2.54 2.70 2.69 2.68 2.68 2.66 2.64 2.64 <br />2.64 2.65 2.65 2.66 2.66 2.68 2.70 2.74 <br />Discarded OutFlow Max=0.04 cfs @ 15.08 hrs HW=889.27' (Free Discharge) <br />3=Exfiltration (Exfiltration Controls 0.04 cfs) <br />Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=888.50' TW=886.40' (Dynamic Tailwater) <br />1=Culvert ( Controls 0.00 cfs) <br />2=Orifice ( Controls 0.00 cfs) <br />Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=888.50' TW=886.40' (Dynamic Tailwater) <br />4=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) <br />Summary for Pond P2: Rain Garden <br />Inflow Area = 0.082 ac, 51.70% Impervious, Inflow Depth = 1.48" for 2-Year event <br />Inflow = 0.19 cfs @ 12.12 hrs, Volume= 0.010 af <br />Outflow = 0.14 cfs @ 12.17 hrs, Volume= 0.010 af, Atten= 26%, Lag= 2.6 min <br />Discarded = 0.00 cfs @ 12.17 hrs, Volume= 0.007 af <br />Primary = 0.14 cfs @ 12.17 hrs, Volume= 0.003 af <br />Routing by Dyn-Stor-Ind method, Time Span= 0.00-100.00 hrs, dt= 0.01 hrs <br />Peak Elev= 891.60' @ 12.17 hrs Surf.Area= 294 sf Storage= 196 cf <br />Plug-Flow detention time= 556.2 min calculated for 0.010 af (100% of inflow) <br />Center-of-Mass det. time= 556.4 min ( 1,322.0 - 765.7 ) <br />Volume Invert Avail.Storage Storage Description <br />#1 890.00' 336 cf Custom Stage Data (Prismatic) Listed below (Recalc)