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<br /> <br />Table 4.8-7 Embankment <br />0 <br />r JJ <br />~ ~ <br />a _ <br />O y, <br />O <br />~~le <br /> <br /> West West East East West <br /> EIk Deer Pyeatt Pyeatt Pyeatt Pyeatt Flume <br />Sedimentation Pond: #1 #1 #1 #2 #3 #1 #1 <br /> <br />Elevation Upstream 7211.0 7331.0 6506.0 6455.0 6435.0 6476.0 6779.0 <br />Toe (ft) <br />Principal Spillway <br />Stage (ft) 8.0 6.0 10.0 10.0 8.0 8.0 10.0(1) <br />Elevation (ft) 7217.0 7337.0 6516.0 6465.0 6484.0 6484.0 6789.0 <br />Diameter-d (in) 18 24 24 <br />Emergency Spillway <br />Stage (ft) 7.5 7.5 12.0 11.5 10.0 10.0 10.0(1) <br />Elevation (ft) 7219.5 7338.5 6518.0 6466.5 6445.0 6486.0 6789.0 <br />Width-b (ft) 15.0 15.0 17.0 15.0 15.0 15.0 0.5 <br />Maximum W.S. 7218.4 7338.3 6518.3 6466.3 6445.6 6487.2 6791.7 <br />Elevation (ft) <br />25-Yr, 24-Hr Event <br />Top of Embankment 7220.0 7339.5 8520.0 6468.0 6447.0 6488.0 8793.D <br />Elevation (ft) <br />Freeboard (ft) 1.6 1.2 1.7 1.7 1.4 0.8 1.3 <br />Note: Elevations are based on current topographic informati on obtained from aerial photographs. Actual elevations will vary according to actual field <br />conditions after topsoil removal but relative elevations shoul d remain the same. <br />(1) Single open-channel design <br />