Thompson Falls Lake water level history
Daily records since 2005 · Level today: 2,396.11 ft
Highest on record
2,396.99 ft
Aug 1, 2026
Lowest on record
239.23 ft
Jun 30, 2025
Today
2,396.11 ft
Oct 21, 2026
Years of data
21
since 2005
In short
Across 20 complete years, 2025 had the lowest average level (2,390.17 ft) and 2016 the highest (2,396.38 ft).
On average the lake is lowest in June (2,392.90 ft) and highest in May (2,396.41 ft).
Thompson Falls Lake level, all years
Loading chart…
Measured
Normal range for the date (middle 50% of past years)
Lowest years
Years ranked by their lowest daily level.
- 2025
- 2023
- 2018
- 2011
- 2008
Yearly highs and lows
| Year | Average | Low | Low date | High | High date |
|---|---|---|---|---|---|
| 2026 (283 days) | 2,396.28 | 2,393.71 | Jan 27 | 2,396.99 | Aug 1 |
| 2025 | 2,390.17 | 239.23 | Jun 30 | 2,396.68 | May 29 |
| 2024 | 2,396.01 | 2,395.00 | Mar 6 | 2,396.65 | May 15 |
| 2023 | 2,395.27 | 2,379.38 | Oct 18 | 2,396.67 | May 17 |
| 2022 | 2,396.01 | 2,394.53 | Nov 20 | 2,396.69 | Dec 29 |
| 2021 | 2,396.25 | 2,394.41 | Jul 30 | 2,396.67 | Oct 23 |
| 2020 | 2,396.31 | 2,395.74 | Sep 4 | 2,396.70 | Apr 30 |
| 2019 | 2,396.23 | 2,395.57 | Jun 26 | 2,396.79 | May 8 |
| 2018 | 2,394.89 | 2,381.57 | Aug 7 | 2,396.76 | May 12 |
| 2017 | 2,396.35 | 2,395.87 | Oct 7 | 2,396.68 | Mar 15 |
| 2016 | 2,396.38 | 2,396.03 | Jan 4 | 2,396.80 | May 18 |
| 2015 | 2,396.35 | 2,396.01 | Jan 2 | 2,396.80 | Mar 20 |
| 2014 | 2,396.37 | 2,395.18 | Jul 29 | 2,396.64 | Jul 15 |
| 2013 | 2,396.36 | 2,395.65 | Dec 7 | 2,396.73 | Jun 2 |
| 2012 | 2,396.32 | 2,395.94 | Jan 12 | 2,396.97 | Mar 3 |
| 2011 | 2,395.14 | 2,382.41 | Aug 16 | 2,396.75 | Jun 10 |
| 2010 | 2,395.84 | 2,395.25 | Jun 5 | 2,396.59 | Jul 12 |
| 2009 | 2,395.82 | 2,395.16 | Apr 23 | 2,396.61 | May 26 |
| 2008 | 2,395.60 | 2,384.82 | Oct 20 | 2,396.61 | May 30 |
| 2007 | 2,395.93 | 2,395.39 | Oct 8 | 2,396.67 | Jun 26 |
| 2006 | 2,395.90 | 2,395.28 | Dec 1 | 2,396.47 | May 8 |
| 2005 (109 days) | 2,395.85 | 2,394.89 | Nov 16 | 2,396.37 | Jun 20 |
Levels in feet. Partial years show the number of days with data.
Monthly averages
| Month | Average | Lowest | Highest |
|---|---|---|---|
| January | 2,396.08 | 2,393.71 | 2,396.58 |
| February | 2,396.08 | 2,395.09 | 2,396.61 |
| March | 2,396.09 | 2,395.00 | 2,396.97 |
| April | 2,396.19 | 2,395.01 | 2,396.81 |
| May | 2,396.41 | 2,395.38 | 2,396.80 |
| June | 2,392.90 | 239.23 | 2,396.75 |
| July | 2,395.49 | 2,382.44 | 2,396.76 |
| August | 2,395.46 | 2,381.57 | 2,396.99 |
| September | 2,396.12 | 2,394.68 | 2,396.57 |
| October | 2,395.41 | 2,379.38 | 2,396.67 |
| November | 2,396.07 | 2,394.53 | 2,396.64 |
| December | 2,396.07 | 2,395.28 | 2,396.69 |
Download
Daily levels as CSV (7,592 rows; credit the original agencies listed below)