Henrys Lake Water Level History
Thirty-day lake-level chart, recent highs and lows, net change and daily summaries from the matched USGS station.
Henrys Lake water-level chart
Source: U.S. Geological Survey monitoring station ↗. Recent measurements may be provisional.
What has Henrys Lake been doing?
Across the available 30-day series, Henrys Lake is rising overall. The measured range runs from 12.31 ft to 12.86 ft, with a net change of +0.06 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 | 12.69 ft | 12.72 ft | 12.73 ft |
| Oct 6 | 12.69 ft | 12.72 ft | 12.74 ft |
| Oct 5 | 12.67 ft | 12.71 ft | 12.74 ft |
| Oct 4 | 12.69 ft | 12.71 ft | 12.73 ft |
| Oct 3 | 12.68 ft | 12.71 ft | 12.74 ft |
| Oct 2 | 12.68 ft | 12.70 ft | 12.73 ft |
| Oct 1 | 12.67 ft | 12.70 ft | 12.73 ft |
| Sep 30 | 12.68 ft | 12.71 ft | 12.76 ft |
| Sep 29 | 12.66 ft | 12.70 ft | 12.73 ft |
| Sep 28 | 12.61 ft | 12.70 ft | 12.82 ft |
| Sep 27 | 12.66 ft | 12.71 ft | 12.78 ft |
| Sep 26 | 12.61 ft | 12.68 ft | 12.75 ft |
| Sep 25 | 12.65 ft | 12.70 ft | 12.74 ft |
| Sep 24 | 12.68 ft | 12.70 ft | 12.72 ft |
| Sep 23 | 12.61 ft | 12.70 ft | 12.81 ft |
| Sep 22 | 12.64 ft | 12.68 ft | 12.72 ft |
| Sep 21 | 12.67 ft | 12.68 ft | 12.70 ft |
| Sep 20 | 12.66 ft | 12.68 ft | 12.71 ft |
| Sep 19 | 12.62 ft | 12.68 ft | 12.74 ft |
| Sep 18 | 12.53 ft | 12.65 ft | 12.75 ft |
| Sep 17 | 12.46 ft | 12.61 ft | 12.72 ft |
| Sep 16 | 12.58 ft | 12.62 ft | 12.68 ft |
| Sep 15 | 12.56 ft | 12.60 ft | 12.63 ft |
| Sep 14 | 12.38 ft | 12.61 ft | 12.74 ft |
| Sep 13 | 12.31 ft | 12.62 ft | 12.72 ft |
| Sep 12 | 12.61 ft | 12.64 ft | 12.72 ft |
| Sep 11 | 12.51 ft | 12.65 ft | 12.86 ft |
| Sep 10 | 12.56 ft | 12.62 ft | 12.66 ft |
| Sep 9 | 12.59 ft | 12.62 ft | 12.66 ft |
| Sep 8 | 12.61 ft | 12.66 ft | 12.69 ft |
Henrys Lake level-history FAQ
How has Henrys Lake water level changed over the last 30 days?
Across the available 30-day sensor series, the net change is +0.06 ft and the overall direction is rising.
What was the highest Henrys Lake level in the last 30 days?
The highest reading in the available 30-day series is 12.86 ft.
What was the lowest Henrys Lake level in the last 30 days?
The lowest reading in the available 30-day series is 12.31 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.