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6 <br /> Hydrograph Report <br /> Hydraflow Hydrographs Extension for Autodesk®Civil 3D®by Autodesk,Inc.v2024 Monday,01 /20/2025 <br /> Hyd. No. 3 <br /> 20-Acre Basin <br /> Hydrograph type = Rational Peak discharge = 39.40 cfs <br /> Storm frequency = 10 yrs Time to peak = 3 min <br /> Time interval = 1 min Hyd. volume = 0.163 acft <br /> Drainage area = 20.000 ac Runoff coeff. = 0.25 <br /> Intensity = 7.880 in/hr Tc by TR55 = 3.00 min <br /> IDF Curve = SampleFHA.idf Asc/Rec limb fact = 1/1 <br /> 20-Acre Basin <br /> Q (cfs) Hyd. No. 3-- 10 Year Q (cfs) <br /> 40.00 40.00 <br /> 30.00 30.00 <br /> 20.00 20.00 <br /> 10.00 10.00 <br /> 0.00 0.00 <br /> 0 1 2 3 4 5 6 <br /> Time(min) <br /> Hyd No. 3 <br />