Hamilton Lake water level history
Daily records since 1943 · Level today: 8.53 ft
Highest on record
10.14 ft
Dec 30, 1965
Lowest on record
7.13 ft
Oct 12, 2011
Today
8.53 ft
Oct 21, 2026
Years of data
83
since 1943
In short
Across 63 complete years, 1953 had the lowest average level (8.00 ft) and 1975 the highest (8.69 ft).
On average the lake is lowest in September (8.33 ft) and highest in April (8.68 ft).
Hamilton Lake 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.
- 1953
- 1952
- 1961
- 1956
- 1946
Yearly highs and lows
| Year | Average | Low | Low date | High | High date |
|---|---|---|---|---|---|
| 2026 (246 days) | 8.62 | 8.31 | Aug 4 | 9.62 | Apr 4 |
| 2025 (278 days) | 8.54 | 8.27 | Sep 19 | 9.17 | Apr 3 |
| 2024 | 8.57 | 8.34 | Sep 17 | 9.20 | Apr 2 |
| 2023 | 8.58 | 8.37 | Sep 24 | 9.26 | Feb 23 |
| 2022 (311 days) | 8.63 | 8.41 | Oct 10 | 9.09 | Mar 24 |
| 2021 (321 days) | 8.67 | 8.48 | Sep 20 | 9.19 | Oct 25 |
| 2020 | 8.54 | 8.23 | Oct 3 | 9.22 | May 19 |
| 2019 (287 days) | 8.69 | 8.47 | Oct 19 | 9.36 | May 1 |
| 2018 (312 days) | 8.67 | 8.40 | Jul 19 | 9.53 | Feb 20 |
| 2017 (304 days) | 8.67 | 8.41 | Aug 16 | 9.24 | Nov 6 |
| 2016 (301 days) | 8.60 | 8.34 | Aug 11 | 8.91 | Jun 23 |
| 2015 (292 days) | 8.60 | 8.44 | Oct 20 | 9.15 | Jun 28 |
| 2014 (286 days) | 8.58 | 8.37 | Sep 9 | 9.25 | Apr 4 |
| 2013 (248 days) | 8.56 | 8.31 | Sep 28 | 9.45 | Apr 19 |
| 2012 | 8.43 | 7.99 | Jul 16 | 8.86 | Jan 22 |
| 2011 (303 days) | 8.56 | 7.13 | Oct 12 | 9.49 | Nov 27 |
| 2010 | 8.53 | 8.24 | Nov 1 | 9.43 | May 22 |
| 2009 | 8.63 | 8.40 | Aug 7 | 9.72 | Mar 11 |
| 2008 | 8.61 | 8.17 | Sep 1 | 9.60 | Feb 6 |
| 2007 | 8.62 | 8.29 | Jul 13 | 9.22 | Aug 20 |
| 2006 | 8.64 | 8.46 | Jul 9 | 9.10 | Dec 1 |
| 2005 | 8.60 | 8.33 | Sep 15 | 9.44 | Jan 13 |
| 2004 | 8.60 | 8.38 | Sep 26 | 9.10 | Jun 14 |
| 2003 (190 days) | 8.64 | 8.47 | Jul 3 | 9.35 | Aug 2 |
| 2002 (274 days) | 8.58 | 8.22 | Sep 16 | 9.39 | May 12 |
| 2001 | 8.62 | 8.29 | Aug 21 | 9.41 | Feb 9 |
| 2000 | 8.59 | 8.35 | Jul 27 | 8.90 | Jun 15 |
| 1999 | 8.52 | 8.10 | Sep 27 | 9.22 | Apr 23 |
| 1998 | 8.61 | 8.36 | Jul 18 | 9.35 | Jan 8 |
| 1997 | 8.66 | 8.40 | Aug 9 | 9.30 | Feb 21 |
| 1996 | 8.66 | 8.43 | Aug 17 | 9.66 | May 17 |
| 1995 (294 days) | 8.61 | 8.41 | Jul 31 | 9.25 | Jun 29 |
| 1994 | 8.49 | 8.21 | Oct 29 | 9.10 | Apr 13 |
| 1993 | 8.61 | 8.36 | Aug 5 | 9.61 | Jan 4 |
| 1992 | 8.59 | 8.38 | Jul 7 | 9.55 | Dec 31 |
| 1991 (317 days) | 8.51 | 8.23 | Aug 7 | 9.11 | Apr 20 |
| 1990 | 8.67 | 8.43 | Aug 3 | 9.48 | Feb 22 |
| 1989 (323 days) | 8.57 | 8.32 | Aug 10 | 9.40 | Jun 1 |
| 1988 | 8.38 | 7.86 | Aug 14 | 9.15 | Apr 7 |
| 1987 | 8.48 | 8.10 | Aug 25 | 8.92 | Dec 20 |
| 1986 | 8.62 | 8.32 | Aug 25 | 9.23 | Oct 3 |
| 1985 | 8.58 | 8.30 | Aug 3 | 9.24 | Feb 26 |
| 1984 (311 days) | 8.60 | 8.30 | Aug 31 | 9.14 | May 26 |
| 1983 | 8.49 | 8.03 | Sep 15 | 9.35 | May 2 |
| 1982 | 8.56 | 8.26 | Sep 5 | 9.02 | Nov 2 |
| 1981 | 8.62 | 8.43 | Jul 18 | 9.25 | Jun 14 |
| 1980 | 8.63 | 8.43 | Oct 13 | 9.04 | Apr 4 |
| 1979 | 8.63 | 8.32 | Jun 26 | 9.07 | Dec 25 |
| 1978 (327 days) | 8.59 | 8.28 | Sep 11 | 9.48 | Mar 23 |
| 1977 (312 days) | 8.61 | 8.02 | Mar 29 | 9.24 | Mar 5 |
| 1976 | 8.60 | 8.30 | Aug 31 | 9.50 | Feb 17 |
| 1975 | 8.69 | 8.40 | Aug 2 | 9.10 | Feb 24 |
| 1974 | 8.44 | 7.90 | Oct 19 | 9.10 | Jan 27 |
| 1973 | 8.61 | 8.30 | Sep 19 | 9.20 | Jul 4 |
| 1972 | 8.50 | 8.00 | Mar 15 | 9.00 | Mar 17 |
| 1971 | 8.28 | 7.80 | Aug 27 | 8.90 | Feb 21 |
| 1970 | 8.36 | 7.95 | Sep 12 | 8.94 | Mar 28 |
| 1969 | 8.43 | 8.00 | Sep 13 | 9.20 | Jan 30 |
| 1968 | 8.52 | 8.20 | Mar 1 | 9.50 | Feb 2 |
| 1967 | 8.46 | 7.80 | Sep 9 | 9.10 | Dec 12 |
| 1966 | 8.50 | 7.80 | Oct 8 | 9.28 | Jan 1 |
| 1965 | 8.51 | 8.02 | Aug 7 | 10.14 | Dec 30 |
| 1964 | 8.27 | 7.88 | Nov 14 | 8.70 | Apr 27 |
| 1963 | 8.30 | 7.96 | Oct 30 | 9.04 | Mar 21 |
| 1962 | 8.37 | 7.90 | Oct 5 | 9.24 | Mar 21 |
| 1961 | 8.46 | 7.40 | Dec 11 | 9.28 | Apr 25 |
| 1960 | 8.47 | 8.08 | Sep 14 | 9.16 | Jan 14 |
| 1959 | 8.52 | 8.02 | Sep 20 | 9.34 | Feb 15 |
| 1958 | 8.52 | 8.34 | Sep 2 | 9.20 | Sep 17 |
| 1957 | 8.45 | 7.92 | Jan 1 | 9.19 | Dec 20 |
| 1956 | 8.21 | 7.43 | Nov 14 | 9.60 | Apr 30 |
| 1955 | 8.42 | 8.00 | Sep 26 | 9.05 | Mar 2 |
| 1954 | 8.44 | 8.00 | Jan 1 | 9.13 | Mar 26 |
| 1953 | 8.00 | 7.27 | Jan 4 | 8.62 | May 26 |
| 1952 | 8.26 | 7.28 | Nov 19 | 9.08 | May 26 |
| 1951 | 8.56 | 8.20 | Oct 1 | 9.32 | Feb 22 |
| 1950 | 8.61 | 8.06 | Feb 16 | 9.68 | Apr 4 |
| 1949 | 8.43 | 8.12 | Aug 26 | 9.26 | Feb 15 |
| 1948 | 8.36 | 7.78 | Sep 20 | 9.36 | Feb 20 |
| 1947 | 8.46 | 8.06 | Aug 20 | 9.51 | Apr 21 |
| 1946 | 8.16 | 7.55 | Oct 14 | 8.75 | Feb 21 |
| 1945 | 8.44 | 8.07 | Sep 27 | 9.55 | May 18 |
| 1944 | 8.24 | 7.61 | Sep 22 | 9.35 | Apr 12 |
| 1943 (155 days) | 8.36 | 8.25 | Aug 20 | 8.53 | Nov 9 |
Levels in feet. Partial years show the number of days with data.
Monthly averages
| Month | Average | Lowest | Highest |
|---|---|---|---|
| January | 8.60 | 7.27 | 9.61 |
| February | 8.63 | 7.42 | 9.60 |
| March | 8.68 | 7.60 | 9.72 |
| April | 8.68 | 8.00 | 9.68 |
| May | 8.62 | 8.25 | 9.66 |
| June | 8.53 | 8.03 | 9.40 |
| July | 8.44 | 7.93 | 9.20 |
| August | 8.38 | 7.69 | 9.35 |
| September | 8.33 | 7.56 | 9.20 |
| October | 8.34 | 7.13 | 9.30 |
| November | 8.45 | 7.28 | 9.49 |
| December | 8.54 | 7.28 | 10.14 |
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Daily levels as CSV (28,823 rows; credit the original agencies listed below)