Country
Daily records since 2004 · Level today: 473.93 ft
Across 20 complete years, 2009 had the lowest average level (472.42 ft) and 2020 the highest (474.82 ft).
On average the lake is lowest in September (473.67 ft) and highest in April (474.46 ft).
Loading chart…
One bar per year from the lowest to the highest daily level, with the year's average. Years with no bar have no daily record in the agency archive.
Years ranked by their lowest daily level.
Levels in feet. Partial years show the number of days with data.
Daily levels as CSV (7,923 rows; credit the original agencies listed below)