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TABLE 2 <br />Sunmary of Watershed Parameters and Design Statistics for Haul Road A Ditches <br />Within the Permit Area Including Mine Entrance Road, Seneca II-W Mine, Routt County, Colorado <br />Watershed Parameters Hydraulic Design Parameters <br />Elevation Peak Discharge Average Flow <br />Drainage Area Length Difference 10-Yr., 24-Hr. Slope Depth Velocity <br />Ditch No. (Ac) (Mi) (Ft) CN Storm (CFS) (Ft/Ft) (Ft) (FPS) <br />Bottom <br />Width <br />Type (Ft) <br />HRD-A1 28.4 0.79 300 86 14.2 0.056 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 />HP.D-A3 20.4 0.48 200 85 10.1 0.06 0.79 5.42 V --- <br />HRD-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 />HP.D-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-A14 11.6 ~ 0.34 80 85 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 />