Country
Daily records since 1989 · Level today: 788.42 ft
Across 33 complete years, 1991 had the lowest average level (786.14 ft) and 2003 the highest (790.27 ft).
On average the lake is lowest in November (787.93 ft) and highest in June (790.87 ft).
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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 (12,910 rows; credit the original agencies listed below)