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. <br /> . <br /> C:�Program Files�FlydroCAD�ProjectsU-IydroCAD Projects�08 JOBS\ <br /> 08175B Barry Sewall Proposed Conditions May 13, 2009 Type 1124-hr 100 Year Rainfa11=6.00" <br /> Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:09:37 AM <br /> HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Paste 23 <br /> Summary for Pond 1 P: Pond 1, Area 2 <br /> Inflow Area= 0.240 ac, 41.67% Impervious, Inflow Depth > 2.94" for 100 Year event <br /> Inflow = 1.20 cfs @ 12.00 hrs, Volume= 0.059 af <br /> Outfiow = 0.51 cfs a� 12.14 hrs, Volume= 0.059 af, Atten=58%, Lag= 8.3 min <br /> Primary = 0.51 cfs(a3 12.14 hrs, Volume= 0.059 af <br /> Routing by Stor-Ind method, Time Span= 5.00.20.00 hrs, dt= 0.05 hrs <br /> Peak Elev= 949.02'(c� 12.14 hrs Surf.Area=0.012 ac Storage= 0.013 af <br /> Plug-Flow detention time= 10.0 min calculated for 0.058 af(99% of inflow) <br /> Center-of-Mass det. time= 8.7 min (795.5-786.8) <br /> Volume Invert Avail.Storaqe Storaqe Description <br /> #1 947.00' 0.052 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 0.002 0.000 0.000 <br /> 948.00 0.006 0.004 0.004 <br /> 950.00 0.018 0.024 0.028 <br /> 951.00 0.029 0.024 0.052 <br /> Device Routin4 Invert Outlet Devices <br /> #1 Primary 947.00' 4.0" Round Culvert <br /> L= 124.0' CPP, mitered to conform to fill, Ke=0.700 <br /> Outlet Invert= 942.50' S= 0.0363'P C�0.900 <br /> n= 0.010 PVC, smooth interior <br /> Primary OutFlow Max=0.50�fs� 12.14 hrs HW=949.02' (Free Discharge) <br /> t-1=Culvert (Inlet Controls 0.50 cfs @ 5.78 fps) <br />