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<br />2058.0010 Prop Drain <br />Prepared by {enter your company name here} <br />HvdroCAOO 8.00 sin 001304 @2006 HvdroCAD Software Solutions LLC <br /> <br />Type II 24-hr 2- Year; 24 hour Rainfall=2.70" <br />Page 7 <br />9/18/2007 <br /> <br />Pond 4P: Storm pond <br /> <br />Inflow Area = <br />Inflow = <br />Outflow = <br />Primary = <br /> <br />1.363 ac, Inflow Depth = 1.97" <br />4.64 cfs @ 11.96 hrs, Volume= <br />1.13cfs@ 12.10hrs, Volume= <br />1.13cfs@ 12.10hrs, Volume= <br /> <br />for 2-Year; 24 hour event <br />0.224 af <br />0.224 af, Atten= 76%, Lag= 8.1 min <br />0.224 af <br /> <br />Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs <br />Starting Elev= 901.00' Surf.Area= 9,306 sf Storage= 22,638 cf <br />Peak Elev= 901.44'@ 12.10 hrs Surf.Area= 10,190 sf Storage= 26,967 cf (4,329 cf above start) <br /> <br />Plug-Flow detention time=(not calculated: initial storage excedes outflow) <br />Center-of-Mass del. time= 132.9 min (927.8 - 795.0) <br /> <br />Volume Invert Avail.StoraQe StoraQe Description <br />#1 894.00' 32,951 cf Custom Stage Data (Irregular}..isted below (Recalc) <br />Elevation Surf.Area Perim. Inc.Store Cum.Store Wel.Area <br />(feet) (sQ-ftl (feet) (cubic-feet) (cubic-feet) ( sq-ftl <br />894.00 430 87.0 0 0 430 <br />895.00 919 129.0 659 659 1,160 <br />896.00 1,546 166.0 1,219 1,878 2,041 <br />897.00 2,326 203.0 1,923 3,801 3,143 <br />898.00 3,254 240.0 2,777 6,578 4,466 <br />899.00 4,330 277.0 3,779 10,357 6,010 <br />900.00 5,556 314.0 4,930 15,288 7,775 <br />901.00 9,306 404.0 7,351 22,638 12,930 <br />902.00 11,353 468.0 10,313 32,951 17,392 <br /> <br />Device <br />#1 <br /> <br />RoutinQ <br />Primary <br /> <br />Invert Outlet Devices <br />901.00' Custom Weir/Orifice, C= 2.62 <br />Head (feet) 0.00 0.25 0.25 1.00 <br />Width (feet) 0.83 0.83 2.00 2.00 <br /> <br />Primary OutFlow Max=1.13 cfs@ 12.10 hrs HW=901.44' (Free Discharge) <br />L1=Custom Weir/Orifice(Weir Controls 1.13 cfs @ 1.90 fps) <br />