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TABLE 2 <br />Summary of Watershed Parameters and Devi gn Statistics for Haul Road A Ditches <br />Within the Permit Area Including Mine Entrance Road, Seneca 11-W Mine, Routt County, Colorado <br />Watershed Parameters <br />Hydraulic Design Parameters <br /> Elevation Peak Discharge Average Flow Bottom <br />Drainage Area Length Difference 10-Yr., 24-Hr. Slope Depth Velocity Width <br />Ditch No. (AC) (Mi) (Ft) CN Storm (CFS) (Ft/Ft) (Ft) (FPS) Type (Ft) <br />HRD-A1 28.4 0.79 300 86 14.2 O.G56 0.91 5.75 V --- <br />HRD-A2 3.0 0.41 110 89 2.0 0.056 0.44 3.54 V (1) <br />HRD-A3 20.4 0.48 200 85 10.1 0.06 0.79 5.42 V --- <br />iIRD-A4 40.3 0,63 200 80 11.9 0,069 0.88 6.15 V --- <br />HRD-AS 1,0 0.15 50 89 ,75 0.076 0,28 3.09 V (1) <br />HRD-A6 1.5 0.21 20 89 1,0 0.02 0.41 2.02 V (1) <br />HRD-A7 2.5 0.19 75 86 1.5 0,02 0.48 2.24 V (1) <br />HRD-A8 3.0 0.50 130 89 2,0 0.052 0.44 3.44 V (1) <br />HRD-A9 6.0 0.22 160 80 2.2 0.049 0.50 3.57 V --- <br />HRD-A10 39.6 0.26 95 80 12.2 0.054 0.93 5.65 V --- <br />HRD-A11 38.4 0.76 250 80 11.8 0.042 0.96 5.10 V --- <br />HRD-A12 31,1 0.48 170 82 11.8 0.042 0,96 5.10 V --- <br />HRD-A13 1.0 0.11 20 89 0.7 0.042 0.32 2.47 V (1) <br />HRD-A 14 11.6 0.34 80 BS 5.7 0.067 0.67 5.08 V --- <br />Note: All ditches designed with SEDCAD and Man ni ngs n = 0.03 except riprapped <br />(1) Road safety berm ditch. <br />• • • <br />