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Table 4.8-7 Embankment Designs (continued). <br /> Middle Middle Middle East West <br /> Flume Flume Flume Horse Middle East Horse Deal <br />Sedimentation Pond: #1 (2) #2 #3 (2) #1 Enlarged Flume #1 (2) Flume #1 (2) (3) (4) <br /> <br />Elevation Upstream 6903.0 6885.0 6868.0 7227.0 6810.0 6862.0 7186.0 7270.2 <br />Toe (ft) <br />Principal Spillway <br />Stage (ft) 11.7(1) 15.5(1) 14.0(1) 13.3(1) 10.0(1) 11.3(1) 13.0(1) 16.8 <br />Elevation (ft) 6914.7 6900.5 6882.0 7233.3 6820.0 6873.3 7187.0 7287.0 <br />Diameter-d (in) <br />Emergency Spillway <br />Stage (ft) 11.7(1) 15.5(1) 14.0(1) 13.3(1) 10.0(1) 11.3(1) 13.0(1) 16.8 <br />? Elevation (ft) 6914.7 6900.5 6882.0 7233.3 6820.0 6873.3 7187.0 7287.0 <br />c Width-b (ft) 5.9 10.0 9.0 0.5 0.5 0.5 0.0 <br />d <br />Maximum W.S. 6916.4 6904.1 6886.0 7236.5 6821.8 6875.0 7187.3 7288.9 <br />Elevation (ft) <br />25-Yr, 24-Hr Event <br />Top of Embankment 6918.5 6906.3 6888.0 7237.5 6824.0 6876.4 7189.0 7290.0 <br />Elevation (ft) <br />Freeboard (ft) 2.1 2.2 2.0 1.0 2.2 1.4 1.7 1.1 <br />Note: Elevations are based on current topog raphic information obtained from aerial photographs. Actual elevations will vary according to actual field <br />conditions after topsoil removal but relative elevations should remain the same. <br />(1) Single open-channel design. <br />(2) As-built information. <br />(3) West Horse is a mostly incised structure with a small (3 ft.) embankment <br />.s -qb (4) The Deal Gulch embankment is 6.0 feet tall as measured from the upstream toe. The remainder of the capacity comes from the incised portion <br />page revised August 8, 2006, Deal Gulch As-built <br />_ IMPRO5]T48J]