Cougar Lake Water Level History
Thirty-day lake-level chart, recent highs and lows, net change and daily summaries from the matched USGS station.
Cougar Lake water-level chart
Source: U.S. Geological Survey monitoring station ↗. Recent measurements may be provisional.
What has Cougar Lake been doing?
Across the available 30-day series, Cougar Lake is falling overall. The measured range runs from 1,539.63 ft to 1,556.41 ft, with a net change of -16.76 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 | 1539.63 ft | 1539.74 ft | 1539.86 ft |
| Oct 6 | 1539.87 ft | 1540.15 ft | 1540.42 ft |
| Oct 5 | 1540.43 ft | 1540.72 ft | 1541.03 ft |
| Oct 4 | 1541.04 ft | 1541.36 ft | 1541.65 ft |
| Oct 3 | 1541.66 ft | 1541.95 ft | 1542.24 ft |
| Oct 2 | 1542.29 ft | 1542.56 ft | 1542.86 ft |
| Oct 1 | 1542.87 ft | 1543.18 ft | 1543.45 ft |
| Sep 30 | 1543.46 ft | 1543.75 ft | 1544.06 ft |
| Sep 29 | 1544.06 ft | 1544.43 ft | 1544.74 ft |
| Sep 28 | 1544.75 ft | 1545.03 ft | 1545.30 ft |
| Sep 27 | 1545.31 ft | 1545.60 ft | 1545.88 ft |
| Sep 26 | 1545.89 ft | 1546.16 ft | 1546.41 ft |
| Sep 25 | 1546.42 ft | 1546.67 ft | 1546.92 ft |
| Sep 24 | 1546.93 ft | 1547.22 ft | 1547.49 ft |
| Sep 23 | 1547.50 ft | 1547.78 ft | 1548.07 ft |
| Sep 22 | 1548.08 ft | 1548.38 ft | 1548.65 ft |
| Sep 21 | 1548.66 ft | 1548.95 ft | 1549.22 ft |
| Sep 20 | 1549.23 ft | 1549.51 ft | 1549.78 ft |
| Sep 19 | 1549.78 ft | 1550.07 ft | 1550.34 ft |
| Sep 18 | 1550.35 ft | 1550.63 ft | 1550.89 ft |
| Sep 17 | 1550.90 ft | 1551.17 ft | 1551.43 ft |
| Sep 16 | 1551.42 ft | 1551.70 ft | 1551.96 ft |
| Sep 15 | 1551.96 ft | 1552.23 ft | 1552.50 ft |
| Sep 14 | 1552.49 ft | 1552.76 ft | 1552.99 ft |
| Sep 13 | 1553.00 ft | 1553.22 ft | 1553.46 ft |
| Sep 12 | 1553.45 ft | 1553.72 ft | 1554.00 ft |
| Sep 11 | 1554.00 ft | 1554.30 ft | 1554.57 ft |
| Sep 10 | 1554.58 ft | 1554.84 ft | 1555.11 ft |
| Sep 9 | 1555.12 ft | 1555.38 ft | 1555.62 ft |
| Sep 8 | 1555.63 ft | 1555.88 ft | 1556.11 ft |
Cougar Lake level-history FAQ
How has Cougar Lake water level changed over the last 30 days?
Across the available 30-day sensor series, the net change is -16.76 ft and the overall direction is falling.
What was the highest Cougar Lake level in the last 30 days?
The highest reading in the available 30-day series is 1,556.41 ft.
What was the lowest Cougar Lake level in the last 30 days?
The lowest reading in the available 30-day series is 1,539.63 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.