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7 <br /> Hydrograph Report <br /> Hydraflow Hydrographs Extension for Autodesk®Civil 3D®by Autodesk,Inc.v2024 Friday,01/17/2025 <br /> Hyd. No. 3 <br /> Basin 1 - Mining <br /> Hydrograph type = Rational Peak discharge = 743.70 cfs <br /> Storm frequency = 100 yrs Time to peak = 16 min <br /> Time interval = 1 min Hyd. volume = 16.390 acft <br /> Drainage area = 284.800 ac Runoff coeff. = 0.6 <br /> Intensity = 4.352 in/hr Tc by TR55 = 16.00 min <br /> IDF Curve = Hayden.IDF Asc/Rec limb fact = 1/1 <br /> Basin 1 - Mining <br /> Q (cfs) Hyd. No. 3 -- 100 Year Q (cfs) <br /> 749.00 - 749.00 <br /> 642.00 642.00 <br /> 535.00 - 535.00 <br /> 428.00 428.00 <br /> 321.00 321.00 <br /> 214.00 214.00 <br /> 107.00 107.00 <br /> 0.00 0.00 <br /> 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 <br /> Time (min) <br /> Hyd No. 3 <br />