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C:\Program Files�FiydroCAD�Projects�HydroCAD ProjectsW8 JOBS\ <br /> 08175B Barry Sewall Proposed Conditions May 13, 2008 Type 1124-hr 10 Year Rainfall=4.20" <br /> Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:09:37 AM <br /> HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC PaS7e 18 <br /> Summary for Pond 6P: Depression <br /> Inflow Area= 1.030 ac, 6.80% Impervious, Inflow Depth > 0.66" for 10 Year event <br /> Inflow = 0.96 cfs a� 12.05 hrs, Volume= 0.057 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= 947.92'(d�20.00 hrs Surf.Area= 0.083 ac Storage= 0.057 af <br /> Plug-Flow detention time= (not calculated: initial storage excedes outtlow) <br /> Center-of-Mass det. time= (not calculated: no outflow) <br /> Volume Invert Avail.Storage Storage Description <br /> #1 947.00' 0.330 af Custom Stage Data(Prismatic) Listed below(Recalc) <br /> Elevation Surf.Area Inc.Store Cum.Store <br /> feet) (acres) (acre-feet) (acre-feet) <br /> 947.00 0.040 0.000 0.000 <br /> 950.00 0.180 0.330 0.330 <br /> Device Routinq Invert Outlet Devices <br /> #1 Primary 948.10' 2.0'long x 66.0'breadth Broad-Crested Rectangular Weir <br /> Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 <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� 5.00 hrs HW=947.00' (Free Discharge) <br /> t-1=Broad-Crested Rectangular Weir (Controls 0.00 cfs) <br />