Intermediate Pool water level history
Daily records since 1990 · Level today: 750.34 ft
Highest on record
751.80 ft
Apr 21, 2023
Lowest on record
737.00 ft
Feb 20, 2008
Today
750.34 ft
Oct 21, 2026
Years of data
37
since 1990
In short
Across 36 complete years, 2020 had the lowest average level (749.55 ft) and 1992 the highest (750.24 ft).
On average the lake is lowest in January (749.41 ft) and highest in September (750.09 ft).
Intermediate Pool level, all years
Loading chart…
Measured
Normal range for the date (middle 50% of past years)
Full pool
Lowest years
Years ranked by their lowest daily level.
- 2008
- 2020
- 2009
- 2007
- 2023
Yearly highs and lows
| Year | Average | Low | Low date | High | High date |
|---|---|---|---|---|---|
| 2026 (243 days) | 749.86 | 749.13 | Apr 7 | 750.49 | Jun 16 |
| 2025 | 749.74 | 748.80 | Jan 19 | 750.45 | Nov 21 |
| 2024 | 749.78 | 748.88 | Dec 13 | 750.49 | Mar 26 |
| 2023 | 749.75 | 748.05 | Jan 26 | 751.80 | Apr 21 |
| 2022 | 749.70 | 748.88 | Dec 5 | 750.41 | Sep 17 |
| 2021 | 749.71 | 748.95 | Dec 4 | 750.38 | Apr 8 |
| 2020 | 749.55 | 739.63 | Oct 7 | 750.28 | Nov 12 |
| 2019 | 749.76 | 748.98 | Nov 21 | 750.49 | Aug 1 |
| 2018 | 749.75 | 748.42 | Apr 27 | 750.55 | Oct 11 |
| 2017 | 749.70 | 748.88 | Mar 16 | 750.38 | Sep 22 |
| 2016 | 749.79 | 748.88 | Jan 25 | 750.48 | Jul 11 |
| 2015 | 749.77 | 748.87 | Jan 8 | 750.39 | Sep 28 |
| 2014 | 749.72 | 748.86 | Mar 4 | 750.44 | Jun 8 |
| 2013 | 749.74 | 748.86 | Jan 10 | 750.48 | May 25 |
| 2012 | 749.80 | 748.85 | Jan 3 | 750.37 | Sep 15 |
| 2011 | 749.85 | 748.20 | Sep 30 | 750.56 | Feb 22 |
| 2010 | 749.86 | 748.97 | Dec 3 | 750.43 | Oct 28 |
| 2009 | 749.81 | 745.02 | Dec 3 | 750.47 | Feb 25 |
| 2008 | 749.82 | 737.00 | Feb 20 | 750.45 | Sep 11 |
| 2007 | 749.86 | 747.10 | Aug 12 | 750.50 | Sep 20 |
| 2006 | 749.98 | 749.12 | Jan 21 | 750.48 | Oct 12 |
| 2005 | 750.00 | 749.13 | Dec 25 | 750.46 | Dec 7 |
| 2004 | 749.98 | 749.14 | Jan 6 | 750.49 | Oct 31 |
| 2003 | 749.85 | 749.01 | Dec 10 | 750.46 | Sep 6 |
| 2002 | 750.04 | 749.19 | Dec 16 | 750.50 | Mar 31 |
| 2001 | 749.96 | 749.16 | Feb 20 | 750.53 | Apr 27 |
| 2000 | 749.83 | 749.08 | Nov 20 | 750.46 | Sep 5 |
| 1999 | 749.92 | 748.09 | Dec 20 | 750.47 | Jul 14 |
| 1998 | 749.97 | 748.94 | Mar 5 | 750.78 | Jul 21 |
| 1997 | 750.01 | 749.30 | Dec 31 | 750.68 | Nov 19 |
| 1996 | 750.17 | 749.50 | Jan 5 | 750.83 | Oct 5 |
| 1995 | 750.03 | 749.05 | Nov 18 | 750.66 | Mar 19 |
| 1994 | 750.02 | 748.78 | Feb 1 | 750.70 | Sep 18 |
| 1993 | 750.21 | 749.15 | Dec 23 | 750.90 | Feb 7 |
| 1992 | 750.24 | 749.00 | Jan 16 | 750.91 | Oct 24 |
| 1991 | 750.20 | 748.60 | Jan 22 | 750.84 | Sep 11 |
| 1990 | 750.23 | 748.80 | Dec 16 | 750.94 | Apr 17 |
Levels in feet. Partial years show the number of days with data.
Monthly averages
| Month | Average | Lowest | Highest |
|---|---|---|---|
| January | 749.41 | 748.05 | 750.61 |
| February | 749.41 | 737.00 | 750.90 |
| March | 749.84 | 747.57 | 750.90 |
| April | 750.06 | 748.42 | 751.80 |
| May | 750.08 | 749.27 | 750.89 |
| June | 750.08 | 749.50 | 750.90 |
| July | 750.06 | 749.45 | 750.89 |
| August | 750.07 | 747.10 | 750.94 |
| September | 750.09 | 748.20 | 750.84 |
| October | 750.08 | 739.63 | 750.91 |
| November | 749.99 | 745.14 | 750.94 |
| December | 749.48 | 745.02 | 750.83 |
Download
Daily levels as CSV (13,381 rows; credit the original agencies listed below)