Sam Rayburn Reservoir Water Level History
Thirty-day lake-level chart, recent highs and lows, net change and daily summaries from the matched USGS station.
Sam Rayburn Reservoir water-level chart
Source: U.S. Geological Survey monitoring station ↗. Recent measurements may be provisional.
What has Sam Rayburn Reservoir been doing?
Across the available 30-day series, Sam Rayburn Reservoir is falling overall. The measured range runs from 153.88 ft to 155 ft, with a net change of -1.12 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 | 153.88 ft | 153.89 ft | 153.90 ft |
| Oct 6 | 153.90 ft | 153.93 ft | 153.95 ft |
| Oct 5 | 153.95 ft | 153.96 ft | 153.98 ft |
| Oct 4 | 153.98 ft | 153.99 ft | 154.00 ft |
| Oct 3 | 154.00 ft | 154.02 ft | 154.03 ft |
| Oct 2 | 154.03 ft | 154.04 ft | 154.05 ft |
| Oct 1 | 154.05 ft | 154.07 ft | 154.10 ft |
| Sep 30 | 154.10 ft | 154.12 ft | 154.14 ft |
| Sep 29 | 154.14 ft | 154.17 ft | 154.19 ft |
| Sep 28 | 154.19 ft | 154.21 ft | 154.23 ft |
| Sep 27 | 154.23 ft | 154.25 ft | 154.27 ft |
| Sep 26 | 154.27 ft | 154.29 ft | 154.31 ft |
| Sep 25 | 154.31 ft | 154.34 ft | 154.36 ft |
| Sep 24 | 154.36 ft | 154.38 ft | 154.40 ft |
| Sep 23 | 154.40 ft | 154.42 ft | 154.44 ft |
| Sep 22 | 154.44 ft | 154.46 ft | 154.48 ft |
| Sep 21 | 154.48 ft | 154.49 ft | 154.51 ft |
| Sep 20 | 154.51 ft | 154.53 ft | 154.55 ft |
| Sep 19 | 154.55 ft | 154.57 ft | 154.59 ft |
| Sep 18 | 154.59 ft | 154.62 ft | 154.64 ft |
| Sep 17 | 154.64 ft | 154.66 ft | 154.69 ft |
| Sep 16 | 154.69 ft | 154.71 ft | 154.73 ft |
| Sep 15 | 154.73 ft | 154.76 ft | 154.78 ft |
| Sep 14 | 154.78 ft | 154.80 ft | 154.82 ft |
| Sep 13 | 154.82 ft | 154.84 ft | 154.85 ft |
| Sep 12 | 154.85 ft | 154.87 ft | 154.89 ft |
| Sep 11 | 154.89 ft | 154.91 ft | 154.92 ft |
| Sep 10 | 154.92 ft | 154.93 ft | 154.95 ft |
| Sep 9 | 154.95 ft | 154.96 ft | 154.97 ft |
| Sep 8 | 154.97 ft | 154.98 ft | 154.99 ft |
Sam Rayburn Reservoir level-history FAQ
How has Sam Rayburn Reservoir water level changed over the last 30 days?
Across the available 30-day sensor series, the net change is -1.12 ft and the overall direction is falling.
What was the highest Sam Rayburn Reservoir level in the last 30 days?
The highest reading in the available 30-day series is 155 ft.
What was the lowest Sam Rayburn Reservoir level in the last 30 days?
The lowest reading in the available 30-day series is 153.88 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.