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ZZZ15326 Existing Proposed Drainage - Wetland Type II24-hr 10-yrRainfall=4.26" <br />Prepared by Microsoft Printed 6/8/2017 <br />HydroCAD® 10.00-14 s/n 01542 ©2015 HydroCAD Software Solutions LLC Pape 23 <br />Summary for Pond 1 P: WETLAND <br />Inflow Area = 5.009 ac, 1.58% Impervious, Inflow Depth = 1.23" for 10-yr event <br />Inflow = 9.01 cfs @ 12.03 hrs, Volume= 0.512 af <br />Outflow = 0.31 cfs @ 15.72 hrs, Volume= 0.512 af, Atten= 97%, Lag= 221.3 min <br />Discarded = 0.31 cfs @ 15.72 hrs, Volume= 0.512 af <br />Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af <br />Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs <br />Peak Elev= 883.08' @ 15.72 hrs Surf.Area= 16,820 sf Storage= 12,429 cf <br />Plug -Flow detention time= 654.8 min calculated for 0.512 af (100% of inflow) <br />Center -of -Mass det. time= 655.1 min (1,520.8 - 865.7 ) <br />Volume Invert Avail.Storage Storage Description <br />#1 880.00' 40,401 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 />880.00 372 0 0 <br />882.00 2,380 2,752 2,752 <br />883.00 14,516 8,448 11,200 <br />884.00 43,886 29,201 40,401 <br />Device Routing Invert Outlet Devices <br />#1 Discarded 880.00' 0.800 in/hr Exfiltration over Surface area <br />#2 Primary 883.50' Custom Weir/Orifice, Cv= 2.62 (C= 3.28) <br />Head (feet) 0.00 0.50 <br />Width (feet) 0.00 20.00 <br />Discarded OutFlow Max=0.31 cfs @ 15.72 hrs HW=883.08' (Free Discharge) <br />4-1=Exfiltration (Exfiltration Controls 0.31 cfs) <br />Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=880.00' (Free Discharge) <br />4-2=Custom Weir/Orifice ( Controls 0.00 cfs) <br />