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C:�Program FileslHydroCAD�ProjectslHydroCAD Projects�08 JOBS\ <br /> 081756 Barry Sewall Proposed Conditions Type il 24hr 10 Year Rainfa11=4.20" <br /> Prepared by Gronberg 8 Associates, Inc. Page 11 <br /> HydroCAD�8.00 s/n 004529 �2006 HydroCAD SoRware Solutions LLC 11/13/2008 4:11:13 PM <br /> Pond D2: Depression 2 <br /> Inflow Area = 1.920 ac, Inflow Depth > 0.30" for 10 Year event <br /> inflow = 0.83 cfs aLD 12.04 hrs, Volume= 0.047 af <br /> Outflow = 0.00 cfs� 5.00 hrs, Volume= 0.000 af, Atten= 100%, Lag=0.0 min <br /> Primary = 0.00 cfs cLD 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= 945.36'�20.00 hrs Surf.Area= 0.123 ac Storage= 0.047 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.Storage 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 /> (feet) (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 Routing Invert OuUet Devices <br /> #1 Primary 946.60' 100.0'long x 2.0'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 2.50 <br /> 3.00 3.50 <br /> Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 <br /> 3.07 3.20 3.32 <br /> Primary OutFlow Max=0.00 cfs aLD 5.00 hrs HW=944.80' (Free Discharge) <br /> t1=Broad-Crested Rectangular Weir (Controls 0.00 cfs) <br /> Pond D3: Depression 3 <br /> Inflow Area= 3.320 ac, tnflow Depth> 0.56" for 10 Year event <br /> Inflow = 2.85 cfs aLD 12.05 hrs, Volume= 0.154 af <br /> Outflow = 2.65 cfs� 12.09 hrs, Volume= 0.151 af, Atten=7%, Lag=2.4 min <br /> Primary = 2.65 cfs� 12.09 hrs, Volume= 0.151 af <br /> Routing by Stor-Ind method, Time Span=5.00-20.00 hrs, dt=0.05 hrs <br /> Peak Elev= 932.65'� 12.09 hrs Surf.Area= 0.033 ac Storage= 0.014 af <br /> Plug-Flow detention time= 13.5 min calculated for 0.151 af(98%of inflow) <br /> Center-of-Mass det. time= 5.5 min (815.5-809.9) <br /> Volume Invert Avail.Storage Storage Description <br /> #1 932.00' 0.090 af Custom Stage Data(Prismatic) Listed below(Recalc) <br />