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ZZZ15326 Existing Proposed Drainage - Wetland Type II24-hr 2-yrRainfall=2.86" <br />Prepared by Microsoft Printed 6/8/2017 <br />HydroCAD® 10.00-14 s/n 01542 ©2015 HydroCAD Software Solutions LLC Pape 14 <br />Summary for Pond 3P: INFILTRATION BASIN A <br />Inflow Area = 0.377 ac, 22.84% Impervious, Inflow Depth = 0.68" for 2-yr event <br />Inflow = 0.29 cfs @ 12.02 hrs, Volume= 0.021 af <br />Outflow = 0.02 cfs @ 12.96 hrs, Volume= 0.019 af, Atten= 93%, Lag= 56.4 min <br />Discarded = 0.00 cfs @ 12.76 hrs, Volume= 0.016 af <br />Primary = 0.02 cfs @ 12.96 hrs, Volume= 0.003 af <br />Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 3 <br />Peak Elev= 884.21' @ 12.96 hrs Surf.Area= 803 sf Storage= 567 cf <br />Plug -Flow detention time= 1,162.8 min calculated for 0.019 af (90% of inflow) <br />Center -of -Mass det. time= 1,109.0 min (1,900.2 - 791.2 ) <br />Volume Invert Avail.Storage Storage Description <br />#1 883.00' 3,253 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 />883.00 155 0 0 <br />884.00 675 415 415 <br />885.00 1,300 988 1,403 <br />886.00 2,400 1,850 3,253 <br />Device Routing Invert Outlet Devices <br />#1 Primary 884.20' Custom Weir/Orifice, Cv= 2.62 (C= 3.28) <br />Head (feet) 0.00 0.80 <br />Width (feet) 6.00 10.00 <br />#2 Discarded 883.00' 0.300 in/hr Exfiltration over Surface area from 883.00' - 884.20' <br />Excluded Surface area = 155 sf <br />Discarded OutFlow Max=0.00 cfs @ 12.76 hrs HW=884.20' (Free Discharge) <br />4-2=Exfiltration (Exfiltration Controls 0.00 cfs) <br />Primary OutFlow Max=0.01 cfs @ 12.96 hrs HW=884.21' (Free Discharge) <br />4-1=Custom Weir/Orifice (Weir Controls 0.01 cfs @ 0.23 fps) <br />