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• TABLE 7-6f-14 <br />Diversion No. 1 <br />Trapezoidal Q~annel <br /> Erodib le Non-Erodible Riprap <br />lYPe (Case 1) (Case 2) (Case 3) <br />Design Discharge 31.13 cfs 31.13 cfs 31.13 cfs <br />Bed Slope <3.5 $ 3.5 to 14.6$ 3.5 to 14.6$ <br />Bottom Width 15 ft 15 ft 15 ft <br />Side Slopes 2:1 2:1 2:1 <br />Depth of Flow 0.40 ft 0.26 ft 0.18 ft <br />Tcg~ Width 16.6 ft 16.1 ft 15.7 ft <br />Max Velocity 4.9 fps 7.6 fps 5.7 fps <br />Manning's n 0.030 0.030 0.034 <br />Storaae Capacity -Pond 008 <br />ire storage capacity of S edimem Pord 008 was analyzed using the SEDCAD+ <br />o~rter procp^am. Table 7-6f-15 is a summary of the As-Built storage <br />• <br />capacity. <br />Table 7-6f-15 <br />Seneca II Mine <br />As-Built Storage Capacity Summary <br />Sediment Porn 008 <br />Capacity <br />Elevation Stage (Ao-ft) Description <br />7002.0 0.0 0 Hottom of Pond <br />7011.5 9.5 7.29 Elevation of Principal Spillway <br /> orifice and 100$ Sediment Storage <br />7014.4 12.4 12.80 10-year, 24-hour Peak Stage <br />7015.0 13.0 14.09 Elevation of Perforated Riser Pipe <br />7015.8 13.8 15.93 Elevation of flner~gency Spillway <br />7017.0 15.0 18.82 25-year, 24-hour Peak Stage <br />• 7017.3 <br />7 16.3 19.60 100-year, 24-hour Peak Stage <br />019.5 17.5 25.75 Top of F2nbanlanettt Elevation <br />7-6f-15 Revised 08/24/92 <br />