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Current elevation, recent changes, full/dead pool comparison, and a 30‑day trend.
3520.30 ft
Lake or reservoir water surface elevation above NAVD 1988, ft (ft)
Source: USGS (instant values)
Pool comparison
Below full pool
179.7 ft
Above dead pool
150.3 ft
Marker: Minimum power pool (3490 ft)
Change (24h)
-0.10 ft
Change (7d)
+0.30 ft
Change (30d)
-0.30 ft
30‑day range
3519.10–3520.90 ft
Common reference levels
These are widely-cited operational reference points; local impacts (ramps, beaches, debris) can vary.
X-axis: date (UTC). Y-axis: elevation (ft). One point per day (last observation).