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6 <br /> Hydrograph Report <br /> Hydraflow Hydrographs Extension for Autodesk®Civil 3D®by Autodesk, Inc.v2024 Friday,01 /17/2025 <br /> Hyd. No. 2 <br /> Basin 2 - Premine <br /> Hydrograph type = Rational Peak discharge = 59.19 cfs <br /> Storm frequency = 100 yrs Time to peak = 6 min <br /> Time interval = 1 min Hyd. volume = 0.489 acft <br /> Drainage area = 46.100 ac Runoff coeff. = 0.2 <br /> Intensity = 6.420 in/hr Tc by TR55 = 6.00 min <br /> IDF Curve = Hayden.IDF Asc/Rec limb fact = 1/1 <br /> Basin 2 - Premine <br /> Q (cfs) Hyd. No. 2 -- 100 Year Q (cfs) <br /> 60.00 60.00 <br /> 50.00 50.00 <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 7 8 9 10 11 12 <br /> Time (min) <br /> Hyd No. 2 <br />