Dworshak Reservoir water level history
Daily records since 1990 · Level today: 1,516.20 ft
Highest on record
1,600.16 ft
Jun 29, 2014
Lowest on record
1,445.26 ft
Apr 11, 1999
Today
1,516.20 ft
Oct 21, 2026
Years of data
37
since 1990
In short
Across 36 complete years, 1997 had the lowest average level (1,513.15 ft) and 1990 the highest (1,570.56 ft).
On average the lake is lowest in October (1,520.51 ft) and highest in June (1,590.77 ft).
Dworshak Reservoir 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.
- 1999
- 1997
- 2011
- 2018
- 2008
Yearly highs and lows
| Year | Average | Low | Low date | High | High date |
|---|---|---|---|---|---|
| 2026 (291 days) | 1,565.04 | 1,516.20 | Oct 21 | 1,600.10 | Jun 9 |
| 2025 | 1,543.97 | 1,513.06 | Nov 3 | 1,599.94 | Jun 22 |
| 2024 | 1,544.24 | 1,513.95 | Nov 13 | 1,599.90 | Jun 23 |
| 2023 | 1,536.99 | 1,514.99 | Nov 3 | 1,600.03 | Jul 1 |
| 2022 | 1,540.22 | 1,513.18 | Dec 26 | 1,599.88 | Jun 30 |
| 2021 | 1,537.27 | 1,503.14 | Mar 22 | 1,597.05 | Jun 23 |
| 2020 | 1,541.96 | 1,515.43 | Jan 1 | 1,600.15 | Jun 22 |
| 2019 | 1,544.30 | 1,515.47 | Dec 31 | 1,600.02 | Jun 18 |
| 2018 | 1,529.39 | 1,453.70 | Apr 7 | 1,599.99 | Jun 30 |
| 2017 | 1,539.11 | 1,504.34 | Apr 16 | 1,600.08 | Jun 22 |
| 2016 | 1,551.08 | 1,518.56 | Oct 8 | 1,600.00 | Jun 15 |
| 2015 | 1,553.79 | 1,514.28 | Oct 31 | 1,599.92 | Jun 9 |
| 2014 | 1,535.43 | 1,486.40 | Apr 20 | 1,600.16 | Jun 29 |
| 2013 | 1,550.32 | 1,518.40 | Nov 8 | 1,600.06 | Jun 18 |
| 2012 | 1,540.72 | 1,510.87 | Apr 21 | 1,600.00 | Jul 2 |
| 2011 | 1,523.87 | 1,450.04 | May 3 | 1,599.98 | Jul 13 |
| 2010 | 1,539.45 | 1,512.92 | Jan 12 | 1,599.98 | Jun 25 |
| 2009 | 1,539.59 | 1,512.49 | Dec 24 | 1,599.96 | Jun 28 |
| 2008 | 1,532.20 | 1,474.71 | May 5 | 1,599.84 | Jul 9 |
| 2007 | 1,548.76 | 1,516.10 | Nov 13 | 1,599.94 | Jun 20 |
| 2006 | 1,543.94 | 1,517.07 | Nov 4 | 1,599.25 | Jun 29 |
| 2005 | 1,556.69 | 1,516.62 | Dec 21 | 1,599.95 | Jul 1 |
| 2004 | 1,542.82 | 1,508.07 | Mar 3 | 1,599.68 | Jul 1 |
| 2003 | 1,547.51 | 1,514.71 | Nov 11 | 1,599.90 | Jul 2 |
| 2002 | 1,534.26 | 1,506.94 | Apr 11 | 1,599.74 | Jun 24 |
| 2001 | 1,531.06 | 1,501.92 | Mar 6 | 1,587.41 | Jul 3 |
| 2000 | 1,537.89 | 1,515.62 | Mar 19 | 1,598.70 | Jul 1 |
| 1999 | 1,516.19 | 1,445.26 | Apr 11 | 1,593.43 | Jul 17 |
| 1998 | 1,542.82 | 1,505.05 | Jan 1 | 1,599.95 | Jun 3 |
| 1997 | 1,513.15 | 1,445.49 | Apr 4 | 1,599.99 | Jul 10 |
| 1996 | 1,548.08 | 1,502.40 | Mar 30 | 1,599.88 | Jul 9 |
| 1995 | 1,546.24 | 1,491.96 | Jan 1 | 1,599.91 | Jul 6 |
| 1994 | 1,525.41 | 1,483.97 | Oct 27 | 1,581.32 | Apr 29 |
| 1993 | 1,558.83 | 1,539.47 | Nov 29 | 1,599.86 | Jun 11 |
| 1992 | 1,562.83 | 1,542.70 | Jan 23 | 1,599.39 | May 14 |
| 1991 | 1,562.89 | 1,509.44 | Feb 5 | 1,599.79 | Jul 9 |
| 1990 | 1,570.56 | 1,528.51 | Mar 24 | 1,599.97 | Aug 20 |
Levels in feet. Partial years show the number of days with data.
Monthly averages
| Month | Average | Lowest | Highest |
|---|---|---|---|
| January | 1,529.44 | 1,491.96 | 1,559.72 |
| February | 1,529.70 | 1,489.56 | 1,579.13 |
| March | 1,530.05 | 1,449.48 | 1,585.75 |
| April | 1,535.40 | 1,445.26 | 1,595.04 |
| May | 1,556.73 | 1,449.85 | 1,599.50 |
| June | 1,590.77 | 1,503.72 | 1,600.16 |
| July | 1,587.50 | 1,494.59 | 1,600.03 |
| August | 1,553.86 | 1,490.32 | 1,599.97 |
| September | 1,526.85 | 1,486.91 | 1,599.80 |
| October | 1,520.51 | 1,483.97 | 1,573.36 |
| November | 1,521.53 | 1,485.03 | 1,581.70 |
| December | 1,526.22 | 1,486.29 | 1,580.59 |
Download
Daily levels as CSV (13,440 rows; credit the original agencies listed below)