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A1ay 1998 Srnrro^dfixr' Port-Alixniq Dnrixogr Caxlm(• 4 <br />Muskingum Routing Parameters, $ X <br />The Muskingum Routing Parameters were also calnilated using the SCS upland method. 1d1 hydraulic <br />lengths, drainage heights and slopes were measured directly from a 1" = 500' map, with a contour inten~al <br />of 10 feet. The values calculated between each junction surd/or subwatershed are shown on the <br />SEDC_1D+ pnntouts. <br />Curve Number, CN <br />Cun•e numbers (CN) were approximated based on hydrologic soil type, as well as Ripe and amount of <br />ground cover. Curt•e numbers were obtained from Technical Release No. 55 (CISD,I-SCS, 1986). <br />Based on soil npe and aegetation cover, the following cun•e numbers were determined for the <br />follo~~zng conditions. <br />Disturbed <br />Soil Type: B <br />Ground Cover Type: Newly Graded <br />Ground Cover: Bare <br />CN : 86 <br />Undisturbed <br />Soil T}'pe: C <br />Ground Coyer Ttpe: Sage Brush <br />Ground Cover: Fair <br />CN : 63 <br />Undisturbed <br />Soil Type: D <br />Ground Coyer Type: Sage Brush <br />Ground Coyer. Fau <br />CN : 70 <br /> <br /> <br />• <br />7-12-4 Revised 05/08/98 <br />