Ross Reservoir water level history
Daily records since 1997 · Level today: 1,575.36 ft
Highest on record
1,602.39 ft
Aug 2, 2000
Lowest on record
-29.46 ft
Aug 1, 1998
Today
1,575.36 ft
Oct 21, 2026
Years of data
29
since 1997
In short
Across 26 complete years, 1998 had the lowest average level (1,323.40 ft) and 2015 the highest (1,585.46 ft).
On average the lake is lowest in April (1,523.56 ft) and highest in September (1,590.11 ft).
Ross Reservoir 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.
- 1998
- 2017
- 2019
- 2018
- 2024
Yearly highs and lows
| Year | Average | Low | Low date | High | High date |
|---|---|---|---|---|---|
| 2026 (290 days) | 1,584.37 | 1,555.12 | Mar 17 | 1,602.03 | Jun 17 |
| 2025 | 1,576.31 | 1,545.55 | Mar 23 | 1,596.87 | Jul 16 |
| 2024 | 1,564.95 | 1,489.01 | Mar 25 | 1,586.04 | Jul 22 |
| 2023 | 1,554.23 | 1,494.44 | Apr 26 | 1,583.48 | Jul 12 |
| 2022 | 1,567.39 | 1,523.26 | May 3 | 1,602.26 | Jul 22 |
| 2021 | 1,570.27 | 1,498.50 | Dec 31 | 1,601.74 | Aug 9 |
| 2020 | 1,568.38 | 1,503.52 | Apr 17 | 1,601.98 | Jul 17 |
| 2019 | 1,544.69 | 1,408.69 | Aug 30 | 1,571.48 | Jan 6 |
| 2018 | 1,563.09 | 1,481.25 | Apr 7 | 1,601.56 | Jul 29 |
| 2017 | 1,560.91 | 0.00 | Apr 12 | 1,601.06 | Jul 12 |
| 2016 | 1,580.97 | 1,544.87 | Apr 1 | 1,601.80 | Jul 31 |
| 2015 | 1,585.46 | 1,569.09 | Mar 14 | 1,599.51 | Jul 12 |
| 2014 | 1,575.69 | 1,534.62 | May 1 | 1,602.29 | Jul 15 |
| 2013 | 1,568.88 | 1,512.54 | Apr 1 | 1,601.78 | Jul 25 |
| 2012 | 1,569.76 | 1,506.41 | Apr 16 | 1,601.64 | Jul 30 |
| 2011 | 1,568.69 | 1,503.25 | Apr 28 | 1,602.21 | Jul 30 |
| 2010 | 1,577.47 | 1,542.59 | Apr 18 | 1,601.84 | Aug 10 |
| 2009 | 1,579.01 | 1,538.26 | Apr 18 | 1,602.21 | Jul 31 |
| 2008 | 1,565.15 | 1,489.03 | Apr 28 | 1,602.04 | Aug 10 |
| 2007 | 1,578.48 | 1,533.45 | Mar 11 | 1,602.31 | Jul 12 |
| 2006 | 1,567.93 | 1,493.58 | Apr 8 | 1,602.33 | Jul 31 |
| 2005 | 1,584.57 | 1,560.95 | Dec 21 | 1,602.11 | Aug 19 |
| 2004 | 1,575.65 | 1,524.01 | Mar 9 | 1,602.18 | Jun 24 |
| 2003 | 1,581.96 | 1,552.29 | Mar 12 | 1,602.28 | Jul 14 |
| 2002 (320 days) | 1,566.82 | 1,505.15 | Apr 12 | 1,601.98 | Jul 31 |
| 2001 | 1,564.06 | 1,527.59 | Apr 23 | 1,590.82 | Jul 16 |
| 2000 | 1,568.17 | 1,515.86 | Apr 4 | 1,602.39 | Aug 2 |
| 1999 (327 days) | 1,556.51 | 1,467.09 | Apr 18 | 1,602.33 | Aug 3 |
| 1998 | 1,323.40 | -29.46 | Aug 1 | 1,601.98 | Jul 12 |
| 1997 (6 days) | 1,581.08 | 1,577.64 | Dec 31 | 1,583.33 | Dec 13 |
Levels in feet. Partial years show the number of days with data.
Monthly averages
| Month | Average | Lowest | Highest |
|---|---|---|---|
| January | 1,567.89 | 1,505.17 | 1,588.39 |
| February | 1,553.66 | 1,521.49 | 1,585.97 |
| March | 1,534.73 | 1,452.88 | 1,577.86 |
| April | 1,523.56 | 0.00 | 1,575.69 |
| May | 1,548.71 | 1,183.75 | 1,599.91 |
| June | 1,584.05 | 1,514.55 | 1,602.24 |
| July | 1,563.84 | -23.35 | 1,602.33 |
| August | 1,539.21 | -29.46 | 1,602.39 |
| September | 1,590.11 | -13.33 | 1,601.57 |
| October | 1,585.76 | 1,555.11 | 1,601.76 |
| November | 1,581.36 | 1,549.43 | 1,601.70 |
| December | 1,576.76 | 1,498.50 | 1,594.18 |
Download
Daily levels as CSV (10,350 rows; credit the original agencies listed below)