Cold Brook Reservoir water level history
Daily records since 1989 · Level today: 3,585.19 ft
Highest on record
3,599.99 ft
Jul 22, 1992
Lowest on record
2,088.21 ft
Jun 3, 1993
Today
3,585.19 ft
Oct 21, 2026
Years of data
37
since 1989
In short
Across 32 complete years, 1991 had the lowest average level (3,571.83 ft) and 2014 the highest (3,585.43 ft).
On average the lake is lowest in August (3,582.19 ft) and highest in March (3,584.70 ft).
Cold Brook 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.
- 1991
- 1999
- 1990
- 2002
- 2012
Yearly highs and lows
| Year | Average | Low | Low date | High | High date |
|---|---|---|---|---|---|
| 2026 (294 days) | 3,585.16 | 3,585.14 | Jan 1 | 3,585.28 | Sep 20 |
| 2025 | 3,585.03 | 3,584.28 | Jul 1 | 3,585.17 | Sep 15 |
| 2024 | 3,585.08 | 3,584.26 | Aug 13 | 3,585.25 | Apr 7 |
| 2023 | 3,585.15 | 3,584.75 | Aug 25 | 3,585.32 | Oct 12 |
| 2022 | 3,585.14 | 3,585.09 | Sep 28 | 3,585.22 | Jul 26 |
| 2021 | 3,585.16 | 3,585.10 | Jun 19 | 3,585.31 | Jun 9 |
| 2020 | 3,584.41 | 3,581.75 | Jan 1 | 3,585.52 | Jun 26 |
| 2019 | 3,584.70 | 3,580.36 | Oct 31 | 3,585.69 | Mar 13 |
| 2018 | 3,585.31 | 3,583.62 | Aug 7 | 3,585.52 | Oct 14 |
| 2017 | 3,585.30 | 3,584.48 | Jul 20 | 3,585.52 | Apr 3 |
| 2016 | 3,585.19 | 3,584.24 | Jun 27 | 3,585.51 | Dec 17 |
| 2015 | 3,585.42 | 3,584.05 | Jul 5 | 3,585.63 | Jul 16 |
| 2014 | 3,585.43 | 3,585.03 | Jul 29 | 3,585.76 | Aug 10 |
| 2013 | 3,584.42 | 3,581.40 | Jul 21 | 3,585.44 | Dec 21 |
| 2012 | 3,583.00 | 3,579.85 | Jun 30 | 3,585.55 | Feb 29 |
| 2011 | 3,583.95 | 3,581.07 | Apr 25 | 3,585.54 | Dec 22 |
| 2010 | 3,584.24 | 3,581.31 | May 5 | 3,585.68 | Jun 27 |
| 2009 | 3,583.72 | 3,581.49 | Apr 22 | 3,585.33 | Mar 24 |
| 2008 | 3,582.84 | 3,581.90 | Jun 14 | 3,584.15 | Dec 31 |
| 2007 | 3,582.31 | 3,579.98 | Oct 5 | 3,585.34 | Mar 25 |
| 2006 | 3,583.18 | 3,581.91 | Aug 6 | 3,585.32 | Mar 20 |
| 2005 | 3,583.17 | 3,581.88 | Nov 3 | 3,585.32 | Mar 25 |
| 2004 | 3,583.29 | 3,581.87 | Jun 29 | 3,588.40 | Jan 31 |
| 2003 | 3,582.94 | 3,581.96 | Jun 16 | 3,584.18 | Mar 19 |
| 2002 | 3,583.22 | 3,579.66 | Jan 30 | 3,585.23 | Jan 25 |
| 2001 | 3,584.00 | 3,582.37 | Jun 11 | 3,585.34 | Jun 4 |
| 2000 | 3,583.35 | 3,581.26 | Jul 22 | 3,585.35 | Mar 20 |
| 1999 | 3,583.39 | 3,579.34 | Jul 15 | 3,585.63 | Jun 21 |
| 1998 | 3,585.30 | 3,585.06 | Oct 29 | 3,585.70 | Jun 24 |
| 1997 | 3,585.26 | 3,585.12 | May 17 | 3,585.40 | Dec 29 |
| 1996 (268 days) | 3,585.28 | 3,584.77 | Sep 13 | 3,586.50 | Sep 9 |
| 1995 | 3,585.29 | 3,585.16 | May 4 | 3,585.55 | Dec 20 |
| 1994 (287 days) | 3,585.07 | 3,584.56 | Sep 30 | 3,585.35 | Mar 2 |
| 1993 (301 days) | 3,578.59 | 2,088.21 | Jun 3 | 3,585.21 | Nov 28 |
| 1992 (286 days) | 3,581.44 | 3,542.31 | Mar 12 | 3,599.99 | Jul 22 |
| 1991 | 3,571.83 | 3,499.98 | May 2 | 3,584.83 | Mar 17 |
| 1990 | 3,580.54 | 3,579.55 | Oct 5 | 3,581.38 | Feb 15 |
| 1989 (1 days) | 3,580.98 | 3,580.98 | Dec 31 | 3,580.98 | Dec 31 |
Levels in feet. Partial years show the number of days with data.
Monthly averages
| Month | Average | Lowest | Highest |
|---|---|---|---|
| January | 3,584.42 | 3,579.66 | 3,588.40 |
| February | 3,584.60 | 3,574.03 | 3,585.55 |
| March | 3,584.70 | 3,542.31 | 3,591.40 |
| April | 3,584.34 | 3,580.36 | 3,585.53 |
| May | 3,583.53 | 3,499.98 | 3,585.56 |
| June | 3,582.38 | 2,088.21 | 3,585.70 |
| July | 3,582.80 | 3,500.02 | 3,599.99 |
| August | 3,582.19 | 3,500.00 | 3,585.76 |
| September | 3,583.38 | 3,500.00 | 3,586.50 |
| October | 3,583.69 | 3,579.55 | 3,585.55 |
| November | 3,583.99 | 3,579.77 | 3,585.52 |
| December | 3,584.23 | 3,579.88 | 3,585.55 |
Download
Daily levels as CSV (13,048 rows; credit the original agencies listed below)