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i • <br /> The following information and calculations summarizes the watershed basin found in <br /> the permit area: <br /> Hydraulic length: 4225 feet <br /> Elevation change: 640 feet <br /> Slope: 15% <br /> Area of watershed: 138 acres <br /> Watershed type: Forested <br /> Storm distribution: SCS Type 1 storm, 24-hour storm <br /> Time step: .20 <br /> Time of concentration: 1.19 hrs <br /> Type of TC calculation SCS upland curve <br /> Curve number: 95 <br /> Total precipitation amount: 2.4 inches for a 100-year event <br /> 2.1 inches for a 25-tear event <br /> Peak discharge: 30.34 cfs for a 100-year event <br /> 25.54 cfs for a 25-year event <br /> Peak volume: 21.47 acre-feet for a 100-year event <br /> 18.15 acre-feet for a 25-year event <br /> 9 <br />