Bonny Reservoir water level history
Daily records since 1990 · Level today: 3,638.00 ft
Highest on record
3,673.80 ft
Jun 14, 1995
Lowest on record
3,638.00 ft
Nov 28, 2012
Today
3,638.00 ft
Oct 21, 2026
Years of data
37
since 1990
In short
Across 36 complete years, 2025 had the lowest average level (3,638.00 ft) and 1994 the highest (3,671.09 ft).
On average the lake is lowest in October (3,651.73 ft) and highest in June (3,653.14 ft).
Bonny 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.
- 2025
- 2024
- 2023
- 2022
- 2021
Yearly highs and lows
| Year | Average | Low | Low date | High | High date |
|---|---|---|---|---|---|
| 2026 (289 days) | 3,638.00 | 3,638.00 | Jan 1 | 3,638.00 | Jan 1 |
| 2025 | 3,638.00 | 3,638.00 | Jan 1 | 3,638.00 | Jan 1 |
| 2024 | 3,638.00 | 3,638.00 | Jan 1 | 3,638.00 | Jan 1 |
| 2023 | 3,638.00 | 3,638.00 | Jan 1 | 3,638.00 | Jan 1 |
| 2022 | 3,638.00 | 3,638.00 | Jan 1 | 3,638.00 | Jan 1 |
| 2021 | 3,638.00 | 3,638.00 | Jan 1 | 3,638.00 | Jan 1 |
| 2020 | 3,638.00 | 3,638.00 | Jan 1 | 3,638.00 | Jan 1 |
| 2019 | 3,638.00 | 3,638.00 | Jan 1 | 3,638.00 | Jan 1 |
| 2018 | 3,638.00 | 3,638.00 | Jan 1 | 3,638.00 | Jan 1 |
| 2017 | 3,638.00 | 3,638.00 | Jan 1 | 3,638.00 | Jan 1 |
| 2016 | 3,638.00 | 3,638.00 | Jan 1 | 3,638.10 | Feb 16 |
| 2015 | 3,638.00 | 3,638.00 | Jan 1 | 3,638.00 | Jan 1 |
| 2014 | 3,638.00 | 3,638.00 | Jan 1 | 3,638.00 | Jan 1 |
| 2013 | 3,638.00 | 3,638.00 | Jan 1 | 3,638.00 | Jan 1 |
| 2012 | 3,638.54 | 3,638.00 | Nov 28 | 3,639.70 | Jan 1 |
| 2011 | 3,651.56 | 3,639.70 | Dec 25 | 3,655.89 | Jun 2 |
| 2010 | 3,653.07 | 3,651.05 | Jan 1 | 3,657.87 | Jul 8 |
| 2009 | 3,651.30 | 3,649.98 | Jan 1 | 3,652.66 | Apr 24 |
| 2008 | 3,649.28 | 3,648.05 | Oct 9 | 3,651.25 | Aug 12 |
| 2007 | 3,650.38 | 3,648.30 | Oct 25 | 3,652.78 | May 2 |
| 2006 | 3,652.23 | 3,650.49 | Dec 14 | 3,653.71 | Apr 12 |
| 2005 | 3,654.25 | 3,652.96 | Dec 9 | 3,655.43 | Jun 13 |
| 2004 | 3,656.10 | 3,654.39 | Dec 23 | 3,657.39 | May 6 |
| 2003 | 3,658.78 | 3,656.92 | Dec 31 | 3,660.28 | Jun 19 |
| 2002 | 3,660.96 | 3,658.64 | Dec 30 | 3,662.79 | Apr 16 |
| 2001 | 3,663.51 | 3,661.42 | Dec 3 | 3,665.39 | May 10 |
| 2000 | 3,666.20 | 3,663.60 | Nov 19 | 3,668.34 | May 9 |
| 1999 | 3,667.83 | 3,666.52 | Nov 22 | 3,670.17 | Jun 14 |
| 1998 | 3,668.43 | 3,666.85 | Oct 31 | 3,669.77 | May 12 |
| 1997 | 3,669.51 | 3,667.72 | Oct 22 | 3,670.85 | May 27 |
| 1996 | 3,670.04 | 3,669.03 | Sep 18 | 3,671.10 | Jun 3 |
| 1995 | 3,671.06 | 3,669.38 | Dec 16 | 3,673.80 | Jun 14 |
| 1994 | 3,671.09 | 3,669.53 | Nov 1 | 3,672.34 | May 15 |
| 1993 | 3,671.02 | 3,669.68 | Jan 1 | 3,671.92 | Jun 6 |
| 1992 | 3,670.61 | 3,668.89 | Oct 25 | 3,672.64 | Feb 11 |
| 1991 | 3,670.83 | 3,669.02 | Jan 1 | 3,672.67 | Jul 29 |
| 1990 | 3,670.39 | 3,668.42 | Oct 19 | 3,672.40 | May 31 |
Levels in feet. Partial years show the number of days with data.
Monthly averages
| Month | Average | Lowest | Highest |
|---|---|---|---|
| January | 3,652.45 | 3,638.00 | 3,672.42 |
| February | 3,652.66 | 3,638.00 | 3,672.64 |
| March | 3,652.87 | 3,638.00 | 3,672.27 |
| April | 3,653.05 | 3,638.00 | 3,672.29 |
| May | 3,653.13 | 3,638.00 | 3,672.40 |
| June | 3,653.14 | 3,638.00 | 3,673.80 |
| July | 3,652.76 | 3,638.00 | 3,673.40 |
| August | 3,652.38 | 3,638.00 | 3,672.44 |
| September | 3,651.95 | 3,638.00 | 3,671.92 |
| October | 3,651.73 | 3,638.00 | 3,671.12 |
| November | 3,651.88 | 3,638.00 | 3,671.30 |
| December | 3,651.82 | 3,638.00 | 3,671.80 |
Download
Daily levels as CSV (13,438 rows; credit the original agencies listed below)