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• • • <br />TABLE 13-2-1 <br />Summary of Watershed Parameters and Design Statistics Eor Containment Ditches <br />Within the Permit Area Including Mine EnC rants Road <br />Seneca II-W Mine, Routt County, Colorado <br /> Elevation Peak Discharge Average Flow Bottom <br />Drainage Area Length Difference 10-Y r, 24-Hr Slope Depth Velocity Width <br />Oit Ch No. (AC) (Mi) (Ft) CN Storm ICES) (Ft/Ft) (FC) N (FPS) Type (Ft) <br />Ho. 4 5.0 0.17 230 63 0.02 0.003 0.07 0.030 0.83 V12) - <br />No. 7 131.2 1.00 725 54 78.63(2) 0.048 1.05 0.073 4.13 Trap (4) 15 <br />Note: Peak di echarge and hydraulic design parameters determined with SEDCAD' (see Attachment 13-1) <br />111 Min imam depth to be 1.5 feet <br />(21Minimum depth to be 1.0 feet <br />13)Peak discharge from 100-year, 24-hour storm and 77.9 cfs discharge from Pond 005 <br />141Vegetated channel <br />(5)BSed on the 2-year, 24-hour storm <br />13-2-1 Revised 4/00 <br />