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Table 23-8 <br />POND DESIGN SUMMARY <br />POND H <br />Three-year Sediment Yield (acre ft) 0.58 <br />Elevation Three-year Sediment (ft) 8,151.10 <br />Volume 10-year, 24-hour Event (acre-ft) 1.89 <br />Volume Groundwater Pumping (acre-f t) 0.56 <br />Elevation 10-year, 24-hour Event Plus Pumping 8,154.40 <br />Elevation Primary Outlet Invert (ft) 8,151.20 <br />Elevation Emergency Spillway Invert (ft) 8,154.40 <br />Elevation Crest 25-year, 24-hour Event Plus Pumping (ft) 8,155.05 <br />Elevation Design Top of Structure (ft) 8,156.2 <br />Freeboard (ft) 1.15 <br />• <br /> <br />23-138 <br />