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• <br /> IVY PLACE - EXISTING CONDITIONS <br /> 17059 - IVY PLACE - EXISTING Type II 24-hr 100-YEAR Rainfall=7.50" <br /> Prepared by {enter your company name here} Printed 10/18/2017 <br /> HydroCAD© 10.00-20 sin 02202 ©2017 HydroCAD Software Solutions LLC Page 23 <br /> Summary for Pond 2P: EX WETLAND B <br /> [93]Warning: Storage range exceeded by 0.04' <br /> [88] Warning: Qout>Qin may require smaller dt or Finer Routing <br /> Inflow Area = 1.119 ac, 0.00% Impervious, Inflow Depth > 5.15" for 100-YEAR event <br /> Inflow = 8.66 cfs @ 12.01 hrs, Volume= 0.480 af <br /> Outflow = 8.68 cfs @ 12.01 hrs, Volume= 0.478 af, Atten= 0%, Lag= 0.0 min <br /> Discarded = 0.00 cfs @ 5.56 hrs, Volume= 0.000 af <br /> Primary = 8.68 cfs @ 12.01 hrs, Volume= 0.478 af <br /> Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs <br /> Peak Elev= 931.04'@ 12.01 hrs Surf.Area= 168 sf Storage= 84 cf <br /> Plug-Flow detention time=3.5 min calculated for 0.478 af(100% of inflow) <br /> Center-of-Mass det. time= 1.4 min ( 805.9- 804.5 ) <br /> Volume Invert Avail.Storage Storage Description <br /> #1 930.50' 84 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 /> 930.50 168 0 0 <br /> 931.00 168 84 84 <br /> Device Routing Invert Outlet Devices <br /> #1 Discarded 930.50' 0.060 in/hr Exfiltration over Surface area <br /> #2 Primary 930.90' 58.0' long x 0.5' breadth Broad-Crested Rectangular Weir <br /> Head (feet) 0.20 0.40 0.60 0.80 1.00 <br /> Coef. (English) 2.80 2.92 3.08 3.30 3.32 <br /> Discarded OutFlow Max=0.00 cfs @ 5.56 hrs HW=930.51' (Free Discharge) <br /> L1=Exfiltration (Exfiltration Controls 0.00 cfs) <br /> Primary OutFlow Max=8.67 cfs @ 12.01 hrs HW=931.04' (Free Discharge) <br /> L2=Broad-Crested Rectangular Weir(Weir Controls 8.67 cfs @ 1.05 fps) <br />