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3 <br /> Hydrograph Report <br /> Hydraflow Hydrographs Extension for Autodesk®Civil 3D®by Autodesk,Inc.v2024 Wednesday, 11/20/2024 <br /> Hyd. No. 2 <br /> Basin 1 - Mining <br /> Hydrograph type = SCS Runoff Peak discharge = 9.224 cfs <br /> Storm frequency = 100 yrs Time to peak = 13.00 hrs <br /> Time interval = 60 min Hyd. volume = 3.847 acft <br /> Drainage area = 64.600 ac Curve number = 82* <br /> Basin Slope = 0.3 % Hydraulic length = 2000 ft <br /> Tc method = LAG Time of conc. (Tc) = 104.00 min <br /> Total precip. = 2.17 in Distribution = Type II <br /> Storm duration = 24 hrs Shape factor = 484 <br /> *Composite(Area/CN)=[(7.200 x 89)+(34.900 x 69)+(1.400 x 98)+(21.100 x 100)]/64.600 <br /> Basin 1 - Mining <br /> Q(cfs) Hyd. No. 2-- 100 Year Q(cfs) <br /> 10.00 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 2 4 6 8 10 12 14 16 18 20 22 24 26 28 <br /> Hyd No. 2 Time(hrs) <br />