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47 <br /> Hydrograph Report <br /> Hydraflow Hydrographs Extension for AutoCAD®Civil 3D®2011 by Autodesk,Inc.u8 Friday,Aug 31,2012 <br /> Hyd. No. I <br /> Pre-Dev Site <br /> Hydrograph type = SCS Runoff Peak discharge = 8.249 cfs <br /> Storm frequency = 1 yrs Time to peak = 733 min <br /> Time interval = 1 min Hyd. volume = 57,383 cuft <br /> Drainage area = 47.060 ac Curve number = 60* <br /> Basin Slope = 0.0 % Hydraulic length = 0 ft <br /> Tc method = TR55 Time of conc. (Tc) = 26.60 min <br /> Total precip. = 3.00 in Distribution = Type II <br /> Storm duration = 24 hrs Shape factor = 484 <br /> Composite(Area/CN)=[(0.130 x 98)+(1.540 x 61)+(45.390 x 60)]/47.060 <br /> Pre-Dev Site <br /> Q (cfs) Q(cfs) <br /> Hyd. No. 1 -- 1 Year <br /> 10.00 - 10.00 <br /> 8.00 <br /> 8.00 <br /> 6.00 6.00 <br /> 4.00 4.00 <br /> 2.00 r 2.00 <br /> 0.00 - 0.00 <br /> 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 <br /> Time(min) <br /> Hyd No. 1 <br />