Great Salt Lake Water Level History
Thirty-day lake-level chart, recent highs and lows, net change and daily summaries from the matched USGS station.
Great Salt Lake water-level chart
Source: U.S. Geological Survey monitoring station ↗. Recent measurements may be provisional.
What has Great Salt Lake been doing?
Across the available 30-day series, Great Salt Lake is falling overall. The measured range runs from 4,189.2 ft to 4,191.3 ft, with a net change of -0.40 ft.
Lake levels can respond to rainfall, watershed inflow, dam and hydropower operations, seasonal target elevations, evaporation and downstream release requirements. This page reports what the matched sensor measured; it does not infer why an operator changed a reservoir.
Recent daily levels
| Date | Low | Average | High |
|---|---|---|---|
| Oct 7 | 4189.60 ft | 4189.65 ft | 4189.70 ft |
| Oct 6 | 4189.60 ft | 4189.66 ft | 4189.80 ft |
| Oct 5 | 4189.60 ft | 4189.66 ft | 4189.70 ft |
| Oct 4 | 4189.60 ft | 4189.68 ft | 4189.70 ft |
| Oct 3 | 4189.60 ft | 4189.68 ft | 4189.80 ft |
| Oct 2 | 4189.60 ft | 4189.68 ft | 4189.70 ft |
| Oct 1 | 4189.60 ft | 4189.69 ft | 4189.70 ft |
| Sep 30 | 4189.60 ft | 4189.72 ft | 4189.80 ft |
| Sep 29 | 4189.60 ft | 4189.74 ft | 4189.90 ft |
| Sep 28 | 4189.20 ft | 4189.60 ft | 4189.80 ft |
| Sep 27 | 4189.60 ft | 4189.72 ft | 4189.80 ft |
| Sep 26 | 4189.60 ft | 4189.76 ft | 4190.00 ft |
| Sep 25 | 4189.70 ft | 4189.75 ft | 4189.80 ft |
| Sep 24 | 4189.70 ft | 4189.77 ft | 4189.80 ft |
| Sep 23 | 4189.60 ft | 4189.78 ft | 4189.90 ft |
| Sep 22 | 4189.20 ft | 4189.72 ft | 4190.00 ft |
| Sep 21 | 4189.70 ft | 4189.79 ft | 4189.80 ft |
| Sep 20 | 4189.70 ft | 4189.80 ft | 4189.90 ft |
| Sep 19 | 4189.70 ft | 4189.81 ft | 4190.10 ft |
| Sep 18 | 4189.50 ft | 4189.88 ft | 4191.30 ft |
| Sep 17 | 4189.50 ft | 4189.71 ft | 4189.80 ft |
| Sep 16 | 4189.50 ft | 4189.75 ft | 4189.90 ft |
| Sep 15 | 4189.70 ft | 4189.81 ft | 4189.90 ft |
| Sep 14 | 4189.80 ft | 4189.92 ft | 4190.30 ft |
| Sep 13 | 4189.40 ft | 4189.84 ft | 4190.50 ft |
| Sep 12 | 4189.80 ft | 4189.87 ft | 4190.00 ft |
| Sep 11 | 4189.80 ft | 4189.88 ft | 4190.00 ft |
| Sep 10 | 4189.80 ft | 4189.88 ft | 4189.90 ft |
| Sep 9 | 4189.80 ft | 4189.91 ft | 4190.00 ft |
| Sep 8 | 4189.80 ft | 4189.92 ft | 4190.00 ft |
Great Salt Lake level-history FAQ
How has Great Salt Lake water level changed over the last 30 days?
Across the available 30-day sensor series, the net change is -0.40 ft and the overall direction is falling.
What was the highest Great Salt Lake level in the last 30 days?
The highest reading in the available 30-day series is 4,191.3 ft.
What was the lowest Great Salt Lake level in the last 30 days?
The lowest reading in the available 30-day series is 4,189.2 ft.
Are historical USGS lake readings final?
Not always. Recent readings may be marked provisional and can be revised by the source agency after quality review.