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<br />2058.0010 Prop Drain <br />Prepared by {enter your company name here} <br />HydroCAOO 8.00 sin 001304 @2006 HydroCAD Software Solutions LLC <br /> <br />Type /I 24-hr 2- Year; 24 hour Ralnfal/=2.70" <br />Page 8 <br />9/18/2007 <br /> <br />Pond 5P: Biofiltration area <br /> <br />Inflow Area = <br />Inflow = <br />Outflow = <br />Primary = <br /> <br />1.363 ac, Inflow Depth = 1.97" <br />1.13cfs@ 12.10hrs, Volume= <br />1.10cfs@ 12.17hrs, Volume= <br />1.10cfs@ 12.17hrs, Volume= <br /> <br />for 2-Year; 24 hour eyent <br />0.224 af <br />0.210 af, Atten= 3%, Lag= 4.3 min <br />0.210 af <br /> <br />Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs <br />Peak Elev= 900.60' @ 12.17 hrs Surf.Area= 2,545 sf Storage= 838 cf <br /> <br />Plug-Flow detention time= 74.5 min calculated for 0.210 af (94% of inflow) <br />Center-of-Mass del. time=24.6 min (952.4 - 927.8) <br /> <br />Volume <br />#1 <br /> <br />Invert <br />900.00' <br /> <br />Avail.Stora!:le Stora!:le Description <br />2,002 cf Custom Stage Data (Prismatic}..isted below (Recalc) <br /> <br />Elevation <br />(feet) <br />900.00 <br />900.50 <br />901.00 <br /> <br />Surf.Area <br />(sq-ftl <br />o <br />2,348 <br />3,310 <br /> <br />Inc. Store <br />( cubic-feet) <br />o <br />587 <br />1,415 <br /> <br />Cum.Store <br />(cubic-feet) <br />o <br />587 <br />2,002 <br /> <br />Device <br />#1 <br /> <br />Routin!:l <br />Primary <br /> <br />Invert <br />900.50' <br /> <br />Outlet Devices <br />10.0' long Sharp-Crested Rectangular Weir2 End Contraction(s) <br />0.5' Crest Height <br /> <br />Primary OutFlow Max=1.1 0 cfs @ 12.17 hrs HW=900.60' (Free Discharge) <br />L1=Sharp-Crested Rectangular Weir(Weir Controls 1.10 cfs @ 1.07 fps) <br />