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C:\Program FileslHydroCAD�ProjectslHydroCAD Projects\08 JOBS\ <br /> 08175B Barry Sewall Existing Conditions May 13, 2009 Type 1124-hr 2 Year Rainfal1=2.75" <br /> Prepared by Gronberg 8 Associates, Inc. Printed 5/19/2009 4:17:13 PM <br /> HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Pa�le 10 <br /> Summary for Pond D2: Depression 2 <br /> Inflow Area= 1.980 ac, 6.06% Impervious, Inflow Depth > 0.06" for 2 Year event <br /> Inflow = 0.05 afs� 12.11 hrs, Volume= 0.009 af <br /> Outflow = 0.00 cfs� 5.00 hrs, Volume= 0.000 af, Atten= 100%, Lag=0.0 min <br /> Primary = 0.00 cfs(a� 5.00 hrs, Volume= 0.000 af <br /> Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt=0.05 hrs <br /> Peak Elev= 944.98'�20.00 hrs Su�f.Area= 0.075 ac Storage= 0.009 af <br /> Plug-Flow detention time= (not calculated: initial storage excedes outflow) <br /> Center-of-Mass det. time= (not calculated: no outflow) <br /> Volume Invert Avail.Storaqe Storage Description <br /> #1 944.80' 0.401 af Custom Stage Data(Prismatic) Listed below(Recalc) <br /> Elevation Surf.Area Inc.Store Cum.Store <br /> (feefl (acres) (acre-feet) (acre-feet) <br /> 944.80 0.030 0.000 0.000 <br /> 945.00 0.080 0.011 0.011 <br /> 946.00 0.200 0.140 0.151 <br /> 947.00 0.300 0.250 0.401 <br /> Device Routina Invert Outlet Devices <br /> #1 Primary 946.60' 2.0'long x 100.0'breadth Broad-Cr�ested Rectangular Weir <br /> Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 <br /> Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 <br /> Primary OutFlow Max=0.00 cfs(a3 5.00 hrs HW=944.80' (Free Discharge) <br /> L1=Broad-Crested Rectangular Weir (Controls 0.00 cfs) <br />