Reservoir Historical Data


Utah Reservoirs Upper Stillwater Reservoir

Upper Stillwater Reservoir

HISTORICAL DATA
January 4 2026

8,864 acre-ft

-2.82% today
83% of Normal Low

The average water storage for this time of year is approximately 10,761.93acre-ft. Maximum recorded storage since record keeping began in 1989 was 2011-07-08 when levels reached 31,691.0 acre-ft. Lowest recorded storage was 2010-04-02 when levels receded to 880.0 acre-ft.

Storage 24hr Change -2.82%
Percent of Normal 83%
Minimum 880.0 acre-ft
2010-04-02
Maximum 31,691.0 acre-ft
2011-07-08
Average 10,762 acre-ft

Seasonal Comparison


Annual Maximums

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