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Table 3: Headwater and Tailwater Elevations used for Sliding Stability Analyses

Tailwater elevations for the Normal Pool and 100-Year Flood events are below the assumed toe elevation of 52.0 feet.

Dam Dam Elevations (ft) Normal Pool El. (ft) 100-Yr Flood El. (ft) ½-PMF El. (ft.)
Crest Toe Head Tail Head Tail Head Tail
Upper Aetna Lake Dam 67.2 54.0 64.8 59.9 65.8 62.0 68.0 63.4
Lower Aetna Lake Dam 61.1 52.0 59.9 50.4* 62.0 51.6* 63.4 56.5