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C:�Program Files�FiydroCAD�ProjectsWydroCAD ProjectsW8 JOBS1 <br /> 08175B Barry Sewall Proposed Conditions Type 1124-hr 2 Year Rainfa11=2.75" <br /> Prepared by Gronberg &Associates, Inc. Page 6 <br /> HydroCAD�8.00 s/n 004529 �2006 HydroCAD Soflware Solutions LLC 11/13/2008 4:11:12 PM <br /> Pond D2: Depression 2 <br /> Inflow Area= 1.920 ac, Inflow Depth> 0.07" for 2 Year event <br /> Inflow = 0.09 cfs� 12.08 hrs, Volume= 0.012 af <br /> Outflow = 0.00�fs cLD 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= 945.01'�20.00 hrs SurF.Area=0.081 ac Storage= 0.012 af <br /> Plug-Flow detention time= (not calculated: initial storage excedes outflow) <br /> Center-of-Mass det. time= (not calculated: no outtlow) <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' 700.0'long x 2.0'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 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� 5.00 hrs HW=944.80' (Free Discharge) <br /> ?1=6road-Crested Rectangular Weir (Controls 0.00 cfs) <br /> Pond D3: Depression 3 <br /> Inflow Area= 3.320 ac, Inflow Depth > 0.22" for 2 Year event <br /> Inflow = 1.01 cfs� 12.06 hrs, Volume= 0.059 af <br /> Outflow = 0.89 cfs cLD 12.11 hrs, Volume= 0.056 af, Atten= 12%, Lag= 3.3 min <br /> Primary = 0.89 cfs @ 12.11 hrs, Volume= 0.056 af <br /> Routing by Stor-Ind method, Time Span=5.00-20.00 hrs, dt=0.05 hrs <br /> Peak Elev= 932.42'@ 12.11 hrs Surf.Area=0.025 ac Storage= 0.007 af <br /> Plug-Flow detention time=27.6 min calculated for 0.056 af(95%of inflow) <br /> Center-of-Mass det. time= 9.7 min (841.3-831.6) <br /> Volume Invert Avail.Storage Storage Description <br /> #1 932.00' 0.090 af Custom Stage Data(Prismatic) Listed below(Recalc) <br />