Historical Monthly Mean Water Levels from the Coordinated network for Lake Erie

Monthly mean water levels in metres referred to IGLD 1985

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Average Min Max Range
1918 173.90 173.82 174.01 174.02 173.98 174.10 174.12 174.09 174.09 174.02 174.02 174.01 174.02 173.82 174.12 0.30
1919 174.00 174.00 174.11 174.25 174.46 174.49 174.39 174.29 174.18 174.08 174.03 173.89 174.18 173.89 174.49 0.60
1920 173.72 173.55 173.57 173.81 174.04 174.09 174.13 174.13 174.06 173.96 173.91 173.93 173.91 173.55 174.13 0.58
1921 173.92 173.88 173.97 174.15 174.26 174.24 174.20 174.09 174.00 173.89 173.85 173.86 174.03 173.85 174.26 0.41
1922 173.78 173.66 173.75 174.05 174.17 174.20 174.16 174.08 174.02 173.88 173.74 173.64 173.93 173.64 174.20 0.56
1923 173.66 173.56 173.64 173.78 173.89 173.94 173.93 173.85 173.80 173.69 173.62 173.73 173.76 173.56 173.94 0.38
1924 173.76 173.72 173.68 173.84 173.99 174.04 174.08 174.00 173.91 173.84 173.66 173.60 173.84 173.60 174.08 0.48
1925 173.51 173.48 173.63 173.73 173.71 173.69 173.66 173.66 173.61 173.49 173.48 173.47 173.59 173.47 173.73 0.26
1926 173.37 173.32 173.34 173.61 173.70 173.71 173.70 173.73 173.76 173.85 173.82 173.78 173.64 173.32 173.85 0.53
1927 173.68 173.62 173.66 173.85 173.93 174.01 174.00 173.94 173.84 173.73 173.68 173.88 173.82 173.62 174.01 0.39
1928 173.89 173.88 173.77 173.90 173.97 174.07 174.16 174.12 173.99 173.90 173.87 173.90 173.95 173.77 174.16 0.39
1929 173.92 173.98 174.12 174.41 174.64 174.62 174.60 174.48 174.34 174.23 174.20 174.20 174.31 173.92 174.64 0.72
1930 174.38 174.32 174.42 174.54 174.53 174.47 174.40 174.26 174.15 174.02 173.90 173.85 174.27 173.85 174.54 0.69
1931 173.78 173.67 173.58 173.68 173.78 173.84 173.86 173.80 173.71 173.64 173.56 173.56 173.70 173.56 173.86 0.30
1932 173.74 173.82 173.77 173.82 173.90 173.90 173.86 173.79 173.69 173.54 173.51 173.49 173.74 173.49 173.90 0.41
1933 173.57 173.54 173.62 173.84 173.98 173.96 173.88 173.77 173.65 173.52 173.41 173.38 173.68 173.38 173.98 0.60
1934 173.34 173.22 173.20 173.38 173.44 173.45 173.45 173.43 173.38 173.30 173.20 173.19 173.33 173.19 173.45 0.26
1935 173.21 173.18 173.29 173.40 173.51 173.57 173.60 173.60 173.49 173.38 173.36 173.34 173.41 173.18 173.60 0.42
1936 173.24 173.18 173.38 173.60 173.70 173.69 173.66 173.59 173.53 173.49 173.43 173.37 173.49 173.18 173.70 0.52
1937 173.55 173.74 173.70 173.82 174.01 174.06 174.13 174.06 173.90 173.72 173.62 173.53 173.82 173.53 174.13 0.60
1938 173.52 173.63 173.78 173.97 173.99 174.01 174.04 174.03 173.92 173.83 173.70 173.67 173.84 173.52 174.04 0.52
1939 173.64 173.64 173.76 173.92 174.04 174.06 174.05 174.00 173.89 173.78 173.71 173.66 173.85 173.64 174.06 0.42
1940 173.56 173.51 173.56 173.78 173.90 174.01 174.02 173.97 173.92 173.84 173.72 173.75 173.80 173.51 174.02 0.51
1941 173.84 173.72 173.66 173.74 173.78 173.83 173.82 173.75 173.66 173.57 173.52 173.51 173.70 173.51 173.84 0.33
1942 173.50 173.54 173.61 173.90 173.99 174.10 174.10 174.08 174.00 173.93 173.90 173.87 173.88 173.50 174.10 0.60
1943 173.97 173.90 173.96 174.11 174.38 174.57 174.57 174.49 174.36 174.24 174.16 174.07 174.23 173.90 174.57 0.67
1944 173.93 173.88 173.92 174.17 174.33 174.37 174.32 174.21 174.12 174.02 173.94 173.89 174.09 173.88 174.37 0.49
1945 173.84 173.76 173.96 174.17 174.28 174.43 174.46 174.39 174.29 174.32 174.22 174.14 174.19 173.76 174.46 0.70
1946 174.14 174.00 174.11 174.17 174.21 174.36 174.39 174.28 174.14 174.02 173.95 173.86 174.14 173.86 174.39 0.53
1947 173.84 173.84 173.81 174.18 174.48 174.66 174.58 174.50 174.42 174.26 174.15 174.10 174.24 173.81 174.66 0.85
1948 174.08 173.99 174.14 174.38 174.50 174.51 174.48 174.37 174.24 174.06 173.98 173.92 174.22 173.92 174.51 0.59
1949 173.96 174.02 174.06 174.12 174.15 174.15 174.12 174.03 173.91 173.82 173.68 173.66 173.97 173.66 174.15 0.49
1950 173.90 174.07 174.08 174.31 174.36 174.31 174.25 174.14 174.10 174.03 173.97 174.10 174.14 173.90 174.36 0.46
1951 174.10 174.11 174.32 174.48 174.54 174.54 174.50 174.42 174.30 174.20 174.17 174.21 174.32 174.10 174.54 0.44
1952 174.36 174.55 174.60 174.74 174.76 174.74 174.68 174.60 174.51 174.32 174.18 174.20 174.52 174.18 174.76 0.58
1953 174.24 174.25 174.31 174.38 174.47 174.56 174.53 174.48 174.35 174.22 174.12 174.06 174.33 174.06 174.56 0.50
1954 174.02 173.99 174.14 174.40 174.49 174.46 174.42 174.35 174.25 174.31 174.32 174.31 174.29 173.99 174.49 0.50
1955 174.38 174.30 174.47 174.57 174.57 174.53 174.46 174.40 174.27 174.17 174.06 174.00 174.35 174.00 174.57 0.57
1956 173.90 173.74 173.92 174.08 174.34 174.40 174.40 174.38 174.28 174.12 173.96 173.92 174.12 173.74 174.40 0.66
1957 173.87 173.85 173.91 174.12 174.22 174.24 174.31 174.19 174.08 173.95 173.84 173.86 174.04 173.84 174.31 0.47
1958 173.88 173.71 173.74 173.80 173.85 173.89 173.96 173.96 173.89 173.77 173.66 173.59 173.81 173.59 173.96 0.37
1959 173.56 173.68 173.79 173.96 174.09 174.08 174.00 173.92 173.82 173.79 173.72 173.79 173.85 173.56 174.09 0.53
1960 173.89 173.92 173.92 174.10 174.21 174.30 174.34 174.31 174.23 174.09 173.95 173.87 174.09 173.87 174.34 0.47
1961 173.81 173.80 174.01 174.18 174.40 174.38 174.32 174.29 174.21 174.03 173.92 173.86 174.10 173.80 174.40 0.60
1962 173.80 173.78 173.87 173.99 174.02 174.05 174.03 173.99 173.90 173.86 173.82 173.78 173.91 173.78 174.05 0.27
1963 173.69 173.60 173.69 173.87 173.93 173.92 173.85 173.80 173.72 173.62 173.55 173.48 173.73 173.48 173.93 0.45
1964 173.46 173.48 173.57 173.76 173.83 173.81 173.77 173.70 173.63 173.48 173.40 173.40 173.61 173.40 173.83 0.43
1965 173.46 173.51 173.67 173.80 173.88 173.89 173.83 173.78 173.75 173.67 173.64 173.67 173.71 173.46 173.89 0.43
1966 173.75 173.76 173.85 173.96 174.06 174.08 174.06 174.00 173.91 173.73 173.74 173.89 173.90 173.73 174.08 0.35
1967 173.88 173.88 173.91 174.08 174.20 174.20 174.22 174.18 174.09 174.02 173.99 174.06 174.06 173.88 174.22 0.34
1968 174.10 174.20 174.18 174.27 174.29 174.34 174.36 174.32 174.23 174.08 174.03 174.05 174.20 174.03 174.36 0.33
1969 174.09 174.23 174.21 174.38 174.55 174.62 174.69 174.63 174.48 174.32 174.24 174.24 174.39 174.09 174.69 0.60
1970 174.11 174.08 174.12 174.28 174.36 174.41 174.43 174.38 174.29 174.23 174.20 174.21 174.26 174.08 174.43 0.35
1971 174.18 174.15 174.31 174.39 174.44 174.48 174.44 174.38 174.36 174.28 174.16 174.17 174.31 174.15 174.48 0.33
1972 174.21 174.20 174.32 174.48 174.61 174.61 174.66 174.61 174.57 174.52 174.57 174.64 174.50 174.20 174.66 0.46
1973 174.66 174.67 174.78 174.92 174.91 174.98 174.93 174.84 174.69 174.57 174.46 174.48 174.74 174.46 174.98 0.52
1974 174.53 174.63 174.80 174.88 174.92 174.90 174.85 174.76 174.62 174.46 174.43 174.49 174.69 174.43 174.92 0.49
1975 174.51 174.55 174.68 174.70 174.71 174.75 174.71 174.65 174.67 174.56 174.46 174.44 174.62 174.44 174.75 0.31
1976 174.44 174.45 174.76 174.79 174.80 174.77 174.76 174.70 174.56 174.44 174.26 174.15 174.58 174.15 174.80 0.65
1977 174.06 173.99 174.17 174.38 174.50 174.43 174.43 174.40 174.38 174.32 174.23 174.28 174.30 173.99 174.50 0.51
1978 174.32 174.28 174.32 174.61 174.64 174.60 174.52 174.42 174.31 174.22 174.15 174.08 174.37 174.08 174.64 0.56
1979 174.08 174.04 174.19 174.45 174.55 174.58 174.58 174.55 174.52 174.44 174.34 174.38 174.39 174.04 174.58 0.54
1980 174.45 174.38 174.43 174.65 174.67 174.70 174.66 174.70 174.62 174.44 174.30 174.26 174.52 174.26 174.70 0.44
1981 174.13 174.14 174.29 174.36 174.49 174.57 174.60 174.54 174.50 174.44 174.39 174.33 174.39 174.13 174.60 0.47
1982 174.28 174.28 174.44 174.64 174.62 174.63 174.58 174.46 174.34 174.25 174.24 174.34 174.43 174.24 174.64 0.40
1983 174.38 174.36 174.39 174.52 174.68 174.70 174.70 174.68 174.54 174.42 174.40 174.48 174.52 174.36 174.70 0.34
1984 174.38 174.39 174.54 174.63 174.60 174.70 174.67 174.61 174.53 174.46 174.40 174.36 174.52 174.36 174.70 0.34
1985 174.45 174.48 174.79 174.98 174.92 174.89 174.83 174.73 174.66 174.55 174.70 174.76 174.73 174.45 174.98 0.53
1986 174.68 174.78 174.88 174.95 174.97 175.04 175.03 174.94 174.83 174.94 174.85 174.89 174.90 174.68 175.04 0.36
1987 174.86 174.78 174.74 174.83 174.80 174.77 174.78 174.68 174.60 174.44 174.36 174.37 174.67 174.36 174.86 0.50
1988 174.33 174.33 174.36 174.46 174.46 174.40 174.33 174.26 174.14 174.04 174.02 174.01 174.27 174.01 174.46 0.45
1989 174.06 174.07 174.09 174.25 174.32 174.52 174.51 174.39 174.30 174.15 174.06 173.99 174.23 173.99 174.52 0.53
1990 173.97 174.16 174.30 174.36 174.41 174.43 174.41 174.39 174.37 174.28 174.21 174.24 174.30 173.97 174.43 0.46
1991 174.42 174.36 174.42 174.48 174.53 174.54 174.44 174.34 174.24 174.09 174.02 174.04 174.34 174.02 174.54 0.52
1992 174.08 174.12 174.22 174.33 174.42 174.41 174.46 174.51 174.50 174.39 174.42 174.42 174.36 174.08 174.51 0.43
1993 174.58 174.53 174.54 174.69 174.67 174.66 174.64 174.53 174.41 174.29 174.24 174.28 174.51 174.24 174.69 0.45
1994 174.20 174.17 174.27 174.48 174.53 174.52 174.57 174.53 174.41 174.31 174.22 174.20 174.37 174.17 174.57 0.40
1995 174.23 174.26 174.28 174.37 174.42 174.45 174.43 174.40 174.24 174.15 174.09 174.07 174.28 174.07 174.45 0.38
1996 174.03 174.05 174.14 174.23 174.43 174.58 174.61 174.56 174.52 174.47 174.41 174.46 174.37 174.03 174.61 0.58
1997 174.47 174.53 174.79 174.83 174.84 175.01 174.96 174.83 174.74 174.61 174.49 174.48 174.72 174.47 175.01 0.54
1998 174.60 174.66 174.73 174.84 174.87 174.76 174.70 174.59 174.45 174.28 174.10 174.02 174.55 174.02 174.87 0.85
1999 173.99 174.10 174.18 174.26 174.28 174.27 174.22 174.14 174.04 173.96 173.90 173.86 174.10 173.86 174.28 0.42
2000 173.82 173.75 173.83 173.95 174.07 174.18 174.26 174.22 174.09 174.00 173.88 173.83 173.99 173.75 174.26 0.51
2001 173.75 173.84 173.94 174.02 174.04 174.09 174.03 173.94 173.83 173.80 173.80 173.86 173.91 173.75 174.09 0.34
2002 173.85 173.97 174.02 174.20 174.30 174.33 174.24 174.15 174.04 173.95 173.84 173.81 174.06 173.81 174.33 0.52
2003 173.81 173.73 173.78 173.97 174.08 174.17 174.18 174.17 174.04 173.92 173.85 173.89 173.97 173.73 174.18 0.45
2004 173.94 173.85 173.96 174.12 174.22 174.36 174.34 174.29 174.25 174.07 174.00 174.01 174.12 173.85 174.36 0.51
2005 174.23 174.26 174.29 174.38 174.40 174.32 174.22 174.14 174.08 174.00 173.88 173.84 174.17 173.84 174.40 0.56
2006 173.97 174.06 174.11 174.16 174.20 174.25 174.27 174.23 174.14 174.08 174.10 174.15 174.14 173.97 174.27 0.30
2007 174.29 174.22 174.26 174.32 174.35 174.26 174.15 174.13 174.08 173.94 173.80 173.86 174.14 173.80 174.35 0.55
2008 173.92 174.09 174.26 174.39 174.35 174.32 174.35 174.23 174.12 174.00 173.92 173.96 174.16 173.92 174.39 0.47
2009 174.04 174.07 174.31 174.42 174.46 174.45 174.42 174.35 174.24 174.13 174.07 174.02 174.25 174.02 174.46 0.44
2010 173.99 173.92 173.97 174.09 174.21 174.31 174.27 174.19 174.02 173.97 173.88 173.86 174.06 173.86 174.31 0.45
2011 173.83 173.75 174.03 174.20 174.46 174.58 174.48 174.38 174.30 174.27 174.21 174.40 174.24 173.75 174.58 0.83
2012 174.39 174.37 174.36 174.31 174.27 174.22 174.14 174.04 173.95 173.82 173.85 173.82 174.13 173.82 174.39 0.57
2013 173.82 173.86 173.92 174.02 174.10 174.23 174.35 174.28 174.16 174.07 173.97 173.94 174.06 173.82 174.35 0.53
2014 174.00 173.94 173.99 174.20 174.35 174.40 174.40 174.37 174.31 174.25 174.15 174.17 174.21 173.94 174.40 0.46
2015 174.16 174.03 173.99 174.22 174.31 174.53 174.74 174.62 174.50 174.34 174.22 174.17 174.32 173.99 174.74 0.75
2016 174.23 174.27 174.41 174.60 174.65 174.61 174.54 174.46 174.39 174.33 174.26 174.17 174.41 174.17 174.65 0.48
2017 174.29 174.40 174.47 174.64 174.82 174.83 174.81 174.70 174.58 174.46 174.46 174.40 174.57 174.29 174.83 0.54
2018 174.38 174.44 174.68 174.77 174.88 174.89 174.82 174.72 174.66 174.57 174.58 174.60 174.67 174.38 174.89 0.51
2019 174.63 174.61 174.65 174.83 175.05 175.14 175.13 175.02 174.87 174.74 174.68 174.68 174.84 174.61 175.14 0.53
2020 174.80 174.90 174.95 175.05 175.08 175.10 175.05 174.93 174.83 174.72 174.65 174.65 174.89 174.65 175.10 0.45
2021 174.69 174.57 174.58 174.63 174.68 174.71 174.81 174.79 174.67 174.67 174.63 174.58 174.67 174.57 174.81 0.24
2022 174.54 174.43 174.53 174.59 174.67 174.68 174.62 174.55 174.46 174.32 174.25 174.20 174.49 174.20 174.68 0.48
2023 174.28 174.36 174.54 174.64 174.65 174.60 174.60 174.59 174.54 174.39 174.29 174.26 174.50 174.26 174.65 0.39
2024 174.31 174.43 174.42 174.56 174.62 174.62 174.63 174.56 174.44 174.31 174.19 174.12 174.46 174.12 174.63 0.51
2025 174.15 174.07 174.12 174.35 174.46 174.48 174.46 174.36 174.21 174.11 173.99 173.91 174.25 173.91 174.48 0.57

All-time

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Average Min Max Range
Average 174.03 174.03 174.11 174.26 174.34 174.37 174.36 174.29 174.20 174.10 174.03 174.02 174.18 173.92 174.40 0.49
Minimum 173.21 173.18 173.20 173.38 173.44 173.45 173.45 173.43 173.38 173.30 173.20 173.19 173.33 173.18 173.45 0.24
Maximum 174.86 174.90 174.95 175.05 175.08 175.14 175.13 175.02 174.87 174.94 174.85 174.89 174.90 174.68 175.14 0.85

2016-2025

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average 174.43 174.45 174.54 174.67 174.76 174.77 174.75 174.67 174.57 174.47 174.40 174.36

Water levels in metres referred to Chart Datum

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2025 0.65 0.57 0.62 0.85 0.96 0.98 0.96 0.86 0.71 0.61 0.49 0.41
All-Time
Average 0.53 0.53 0.61 0.76 0.84 0.87 0.86 0.79 0.70 0.60 0.53 0.52
Min -0.29 -0.32 -0.30 -0.12 -0.06 -0.05 -0.05 -0.07 -0.12 -0.20 -0.30 -0.31
Max 1.36 1.40 1.45 1.55 1.58 1.64 1.63 1.52 1.37 1.44 1.35 1.39
Date modified: