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� � <br /> C:\Program Files\HydroCAD\ProjectsViydroCAD Projects\08 JOBS\ ��2,�-hr 100 Year Rainfa11=6.00" <br /> 08175B Barry Sewall Proposed Conditions May 13, 2009 TYPe Printed 5/20/2009 9:09:37 AM <br /> Prepared by Gronberg &Associates, Inc. Pa e 24 <br /> H droCAD�9.00 s/n 04529 �2009 H droCAD Soflware Solutions LLC <br /> Summary for Pond 2P: Pond 2, Area 3 <br /> [7g]Warning: Submerged Pond 1 P Primary device# 1 OUTLET by 2.42' <br /> inflow Area= 1.955 ac, 9.46% impervious, Inflow De�p 2� af•27" for 100 Year event <br /> Inflow = 2.22 cfs� 12.03 hrs, Volume= 0.073 af, Atten=89%, Lag= 165.2 min <br /> Outflow = 0.24 cfs� 14.79 hrs, Volume= 0.073 af <br /> Primary = 0.24 cfs� 14.79 hrs, Volume= <br /> Routing by Stor-Ind method,Time Span= 5.00-20.00 hrs, dt=0.05 hrs <br /> Peak Elev=944.92'� 14.79 hrs Surf.Area= 0.076 ac Storage=0.135 af <br /> Plug-Flow detention time= 293.8 min calculated for 0.073 af(35% of inflow) <br /> Center-of-Mass det.time= 167.7 min ( 1,015.2-847•4) <br /> Volume Invert Avail.Stora e Stora e Descri tion <br /> #1 942.00' 0.141 af Custom Stage Data(Prismatic) Listed below(Recalc) <br /> Elevation Surf.Area Inc.Store Cum.Store <br /> (feet) (acres) (acre-feet) acre-feet <br /> 942.00 0.028 0.000 0.000 <br /> 944.00 0.049 0.077 0.077 <br /> 945.00 0.078 0.063 0.141 <br /> Device Routin Invert Outlet Devices <br /> #1 Primary 944.90' 23.0' long x 1.0' breadth Broad-Crested Rectangular Weir <br /> Head(feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 <br /> 2.50 3.00 <br /> Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 <br /> 3.31 3.32 <br /> Primary OutFlow Max=U•21 cfs(a3 14.79 hrs HW=944•92' (Free Discharge} <br /> t-1=Broad-Crested Rectangular Weir (Weir Controls 0.21 cfs�0.40 fps) <br /> � <br />