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6 <br /> Hydrograph Report <br /> Hydraflow Hydrographs Extension for Autodesk®Civil 3D®by Autodesk,Inc.v2022 Thursday, 10/10/2024 <br /> Hyd. No. 3 <br /> Drainage Basin 1 - Mining <br /> Hydrograph type = Rational Peak discharge = 11.62 cfs <br /> Storm frequency = 100 yrs Time to peak = 362 min <br /> Time interval = 1 min Hyd. volume = 252,298 cuft <br /> Drainage area = 39.820 ac Runoff coeff. = 0.37* <br /> Intensity = 0.788 in/hr Tc by TR55 = 362.00 min <br /> IDF Curve = Evans.IDF Asc/Rec limb fact = 1/1 <br /> 'Composite(Area/C)=[(21.380 x 0.50)+(18.440 x 0.23)]/39.820 <br /> Drainage Basin 1 - Mining <br /> Q (cfs) Hyd. No. 3-- 100 Year Q (cfs) <br /> 12.00 12.00 <br /> 10.00 • <br /> 10.00 <br /> 8.00 - — 8.00 <br /> 6.00 6.00 <br /> 4.00 4.00 <br /> 2.00 2.00 <br /> 0.00 .- 0.00 <br /> 0 60 120 180 240 300 360 420 480 540 600 660 720 780 <br /> Hyd No. 3 Time(min) <br />