Ottawa River at Pembroke
| Monthly and Annual Mean Water Levels in Metres | Annual Extremes | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Means | Daily Maximum | Daily Minimum | |
| 1950 | 111.16 | 111.19 | 111.15 | 111.41 | 112.05 | 111.57 | 111.32 | 111.17 | 111.17 | 111.16 | 111.32 | 111.38 | 111.34 | 112.48 | 111.05 | |
| 1951 | 111.33 | 111.35 | 111.49 | 112.67 | 112.01 | 111.44 | 111.52 | 111.30 | 111.29 | 111.74 | 112.10 | 111.81 | 111.67 | 113.34 | 111.10 | |
| 1952 | 111.64 | 111.54 | 111.56 | 111.96 | 112.07 | 111.76 | 111.33 | 111.32 | 111.32 | 111.32 | 111.27 | 111.43 | 111.54 | 112.59 | 111.04 | |
| 1953 | 111.50 | 111.58 | 111.81 | 112.38 | 111.72 | 111.37 | 111.24 | 111.14 | 110.98 | 111.14 | 111.10 | 111.18 | 111.43 | 112.79 | 110.91 | |
| 1954 | 111.23 | 111.21 | 111.46 | 111.79 | 111.74 | 111.93 | 111.64 | 111.36 | 111.38 | 111.99 | 111.87 | 111.73 | 111.61 | 112.55 | 111.06 | |
| 1955 | 111.62 | 111.55 | 111.49 | 112.00 | 111.66 | 111.36 | 111.16 | 111.05 | 111.03 | 111.20 | 111.73 | 111.59 | 111.45 | 112.51 | 110.85 | |
| 1956 | 111.37 | 111.31 | 111.32 | 111.64 | 112.03 | 111.81 | 111.59 | 111.49 | 111.63 | 111.83 | 111.54 | 111.49 | 111.59 | 112.43 | 111.12 | |
| 1957 | 111.44 | 111.47 | 111.52 | 111.61 | 111.69 | 111.47 | 112.17 | 111.39 | 111.43 | 111.56 | 111.79 | 111.81 | 111.61 | 112.85 | 111.02 | |
| 1958 | 111.67 | 111.67 | 111.66 | 111.77 | 111.34 | 111.39 | 111.39 | 111.22 | 111.25 | 111.39 | 111.64 | 111.58 | 111.50 | 111.86 | 111.09 | |
| 1959 | 111.45 | 111.40 | 111.34 | 111.67 | 111.98 | 111.52 | 111.25 | 111.16 | 111.25 | 111.37 | 111.77 | 111.74 | 111.49 | 112.21 | 111.03 | |
| 1960 | 111.61 | 111.57 | 111.55 | 112.09 | 113.12 | 111.87 | 112.10 | 111.69 | 111.37 | 111.34 | 111.40 | 111.44 | 111.76 | 113.67 | 111.19 | |
| 1961 | 111.40 | 111.29 | 111.29 | 111.56 | 111.73 | 111.57 | 111.43 | 111.33 | 111.39 | 111.50 | 111.42 | 111.50 | 111.45 | 112.00 | 111.11 | |
| 1962 | 111.56 | 111.62 | 111.43 | 111.81 | 112.06 | 111.49 | 111.12 | 111.03 | 111.06 | 111.08 | 111.07 | 111.02 | 111.36 | 112.65 | 110.96 | |
| 1963 | 111.02 | 111.08 | 111.14 | 111.72 | 111.58 | 111.43 | 111.15 | 111.07 | 111.16 | 111.11 | 111.14 | 111.41 | 111.25 | 111.88 | 110.93 | |
| 1964 | 111.41 | 111.39 | 111.43 | 111.64 | 111.74 | 111.66 | 111.37 | 111.12 | 111.03 | 111.14 | 111.16 | 111.24 | 111.36 | 112.21 | 110.96 | |
| 1965 | 111.33 | 111.34 | 111.34 | 111.41 | 111.98 | 111.44 | 111.16 | 111.29 | 111.73 | 112.05 | 111.76 | 111.66 | 111.54 | 112.39 | 111.06 | |
| 1966 | 111.69 | 111.62 | 111.66 | 111.99 | 111.81 | 111.73 | 111.29 | 111.46 | 111.32 | 111.49 | 111.75 | 112.33 | 111.68 | 112.78 | 111.14 | |
| 1967 | 111.73 | 111.36 | 111.20 | 112.19 | 112.34 | 112.03 | 111.46 | 111.23 | 111.21 | 111.34 | 111.84 | 111.68 | 111.63 | 113.00 | 111.07 | |
| 1968 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | |
| 1969 | --- | --- | --- | --- | --- | --- | 111.40 | 111.40 | 111.23 | 111.33 | 111.86 | 111.69 | --- | 112.14 | 111.08 | |
| 1970 | 111.52 | 111.44 | 111.47 | 111.55 | 112.05 | 112.00 | 111.94 | 111.60 | 111.34 | 111.41 | 111.43 | 111.44 | 111.60 | 112.51 | 111.21 | |
| 1971 | 111.40 | 111.39 | --- | 111.77 | 112.00 | 111.42 | 111.00 | 111.09 | 110.87 | 110.90 | 111.03 | 111.19 | 111.29 | 112.54 | 110.81 | |
| 1972 | 111.34 | 111.38 | 111.43 | 111.54 | 112.26 | --- | 111.41 | 111.48 | 111.49 | 111.40 | 111.56 | 111.60 | 111.55 | 112.66 | 111.14 | |
| 1973 | 111.48 | 111.55 | 111.67 | 112.13 | 112.16 | 111.88 | 111.58 | 111.27 | 111.27 | 111.43 | 111.52 | 111.55 | 111.62 | 112.68 | 111.10 | |
| 1974 | 111.44 | 111.39 | 111.57 | 111.84 | 112.63 | 112.20 | 111.66 | --- | 111.18 | 111.32 | 111.66 | --- | 111.66 | 112.88 | 111.12 | |
| 1975 | 111.53 | 111.59 | 111.54 | --- | 111.77 | 111.70 | 111.18 | 111.02 | 110.94 | 110.99 | 111.07 | --- | --- | 112.36 | 110.89 | |
| 1976 | 111.40 | 111.40 | 111.49 | 112.31 | 112.22 | 111.56 | 111.36 | 111.21 | 111.12 | 111.20 | 111.21 | 111.37 | 111.50 | 112.60 | 110.97 | |
| 1977 | 111.35 | 111.34 | 111.56 | 112.09 | 111.69 | 111.22 | 111.24 | 111.10 | 111.13 | 111.21 | 111.41 | 111.59 | 111.41 | 112.48 | 111.04 | |
| 1978 | 111.52 | 111.55 | 111.41 | 111.44 | 111.82 | 111.47 | 111.18 | 111.07 | 111.04 | 111.39 | 111.38 | 111.40 | 111.39 | 112.26 | 110.96 | |
| 1979 | 111.48 | 111.48 | 111.58 | 112.20 | 112.69 | 111.85 | 111.46 | 111.39 | 111.34 | 111.64 | 111.92 | 111.94 | 111.75 | 113.32 | 111.19 | |
| 1980 | 111.77 | 111.60 | 111.55 | 112.09 | 112.03 | 111.34 | 111.34 | 111.28 | 111.27 | 111.66 | 111.68 | 111.56 | 111.60 | 112.46 | 111.09 | |
| 1981 | 111.44 | 111.52 | 111.83 | 112.38 | 111.87 | 111.79 | 111.36 | 111.13 | 111.36 | 111.46 | 111.57 | 111.43 | 111.59 | 112.70 | 111.00 | |
| 1982 | 111.38 | 111.41 | 111.43 | 111.59 | 111.56 | 111.31 | 111.15 | 111.01 | 111.01 | 111.16 | 111.48 | 111.69 | 111.35 | 112.23 | 110.94 | |
| 1983 | 111.73 | 111.64 | 111.71 | 111.74 | 112.26 | 112.02 | 111.25 | 111.14 | 111.02 | 111.18 | 111.42 | 111.51 | 111.55 | 112.82 | 110.92 | |
| 1984 | 111.56 | 111.58 | 111.57 | 111.93 | 111.79 | 111.91 | 111.67 | 111.28 | 111.21 | 111.25 | 111.68 | 111.74 | 111.59 | 112.37 | 111.07 | |
| 1985 | 111.72 | 111.63 | 111.62 | 111.90 | 112.27 | 111.43 | 111.45 | 111.47 | 111.20 | 111.19 | 111.32 | 111.51 | 111.56 | 112.86 | 111.12 | |
| 1986 | 111.47 | 111.57 | 111.36 | 112.04 | 111.87 | 111.57 | 111.22 | 111.19 | 111.17 | 111.42 | 111.63 | 111.47 | 111.50 | 112.22 | 111.04 | |
| 1987 | 111.47 | 111.44 | 111.36 | 111.72 | 111.11 | 111.01 | 111.01 | 111.01 | 110.89 | 110.90 | 111.11 | 111.36 | 111.20 | 112.04 | 110.84 | |
| 1988 | 111.50 | 111.54 | 111.31 | 112.08 | 111.92 | 111.27 | 111.05 | 111.21 | 111.34 | 111.80 | 112.08 | 111.77 | 111.56 | 112.33 | 110.95 | |
| 1989 | 111.70 | 111.73 | 111.40 | --- | 112.03 | 112.02 | 111.30 | 111.09 | --- | --- | 111.17 | 111.51 | --- | 112.52 | 110.85 | |
| 1990 | 111.52 | 111.59 | 111.57 | 111.84 | 111.87 | 111.45 | 111.43 | 111.12 | 111.11 | 111.69 | 111.78 | 111.99 | 111.58 | 112.39 | 111.01 | |
| 1991 | 111.70 | 111.74 | 111.52 | 112.20 | 111.70 | 111.32 | 111.10 | 111.01 | 111.05 | 111.17 | 111.39 | 111.64 | 111.46 | 112.51 | 110.95 | |
| 1992 | 111.57 | 111.62 | 111.40 | 111.49 | 111.81 | 111.22 | 111.16 | 111.06 | 111.33 | 111.52 | 111.83 | 111.68 | 111.47 | 112.35 | 110.98 | |
| 1993 | 111.60 | 111.61 | 111.31 | 111.53 | 111.31 | 111.49 | 111.08 | 110.97 | 111.02 | 111.45 | 111.72 | 111.54 | 111.38 | 112.05 | 110.89 | |
| 1994 | 111.46 | 111.64 | 111.49 | 111.41 | 111.57 | 111.56 | 111.62 | 111.33 | 111.15 | 111.20 | 111.49 | 111.50 | 111.45 | 111.94 | 110.97 | |
| 1995 | 111.60 | 111.57 | 111.54 | 111.41 | 111.93 | 111.74 | 111.13 | 111.10 | 110.95 | 111.00 | 111.51 | 111.58 | 111.42 | 112.44 | 110.92 | |
| 1996 | 111.51 | 111.54 | 111.43 | 111.62 | 112.45 | 111.65 | 111.56 | 111.41 | 111.12 | 111.15 | 111.43 | 111.46 | 111.53 | 112.70 | 111.03 | |
| 1997 | 111.56 | 111.71 | 111.60 | 111.94 | 112.39 | 111.61 | 111.40 | 111.08 | 111.16 | 111.23 | 111.25 | 111.25 | 111.52 | 112.56 | 110.99 | |
| 1998 | 111.32 | 111.49 | 111.42 | 112.24 | 111.23 | 111.17 | 111.11 | 110.97 | 110.96 | 110.99 | 111.06 | 111.34 | 111.27 | 112.53 | 110.88 | |
| 1999 | 111.47 | 111.59 | 111.46 | 111.52 | 110.97 | 111.37 | 111.33 | 111.09 | 111.04 | 111.57 | 111.88 | 111.95 | 111.44 | 112.22 | 110.81 | |
| 2000 | 111.69 | 111.67 | 111.75 | 111.73 | 111.60 | 111.42 | 111.27 | 111.32 | 111.20 | 111.16 | 111.30 | 111.45 | 111.46 | 111.98 | 111.06 | |
| 2001 | 111.45 | 111.50 | 111.49 | 111.79 | 111.67 | 111.45 | 111.13 | 110.97 | 111.07 | 111.85 | 112.02 | 112.02 | 111.53 | 112.34 | 110.89 | |
| 2002 | 111.79 | 111.67 | 111.68 | 112.19 | 112.15 | 111.97 | 111.45 | 111.12 | 111.03 | 111.08 | 111.13 | 111.15 | 111.53 | 112.90 | 110.95 | |
| 2003 | 111.27 | 111.27 | 111.26 | 111.68 | 111.44 | 111.51 | 111.37 | 111.40 | 111.19 | 111.50 | 111.96 | 111.88 | 111.48 | 112.25 | 111.11 | |
| 2004 | 111.77 | 111.67 | 111.57 | 112.04 | 112.23 | 111.65 | 111.83 | 111.17 | 111.14 | 111.00 | 111.22 | 111.45 | 111.56 | 112.61 | 110.98 | |
| 2005 | 111.57 | 111.54 | 111.39 | 111.99 | 111.59 | 111.32 | 111.06 | 110.84 | 110.87 | 111.13 | 111.41 | --- | 111.36 | 112.38 | 110.76 | |
| 2006 | 111.68 | 111.67 | 111.65 | 112.30 | 111.68 | 111.42 | 111.19 | 111.19 | 111.14 | 111.70 | 111.95 | 112.02 | 111.64 | 112.57 | 111.03 | |
| 2007 | 111.93 | 111.77 | 111.61 | 111.65 | 111.41 | 111.71 | 111.41 | 111.06 | 110.98 | 110.94 | 111.13 | 111.32 | 111.41 | 112.22 | 110.91 | |
| 2008 | 111.63 | 111.71 | 111.60 | 111.99 | 112.16 | 111.77 | 111.82 | 111.60 | 111.41 | 111.35 | 111.53 | 111.62 | 111.68 | 112.54 | 111.27 | |
| 2009 | 111.76 | 111.74 | 111.69 | 112.22 | 112.27 | 111.79 | 111.48 | 111.57 | 111.26 | 111.44 | 111.77 | 111.68 | 111.72 | 112.68 | 111.06 | |
| 2010 | 111.60 | 111.64 | 111.58 | 111.23 | 111.09 | 111.01 | 110.89 | 110.86 | 111.13 | 111.50 | 111.42 | 111.69 | 111.30 | 111.92 | 110.81 | |
| 2011 | 111.71 | 111.71 | 111.55 | 111.85 | 112.11 | 111.62 | 111.41 | 111.12 | 110.98 | 111.09 | 111.42 | 111.59 | 111.51 | 112.50 | 110.89 | |
| 2012 | 111.67 | 111.63 | 111.89 | 111.81 | 111.45 | 111.18 | 110.93 | 110.94 | 111.01 | 111.37 | 111.87 | 111.62 | 111.45 | 112.56 | 110.88 | |
| 2013 | 111.66 | 111.75 | 111.60 | 111.98 | 112.57 | 112.01 | 111.20 | 111.16 | 111.22 | 111.37 | 111.98 | 111.65 | 111.68 | 112.78 | 110.97 | |
| 2014 | 111.65 | 111.68 | 111.40 | 111.69 | 112.53 | 111.69 | 111.33 | 111.21 | 111.57 | 111.93 | 112.00 | 111.82 | 111.71 | 112.90 | 111.09 | |
| 2015 | 111.83 | 111.77 | 111.53 | 111.77 | 111.92 | 111.56 | 111.12 | 111.06 | 111.08 | 111.02 | 111.40 | 111.88 | 111.49 | 112.44 | 110.95 | |
| 2016 | 111.96 | 111.83 | 112.01 | 112.21 | 111.94 | 111.57 | 111.12 | 111.08 | 111.05 | 111.07 | 111.13 | 111.30 | 111.52 | 112.47 | 111.00 | |
| 2017 | 111.49 | 111.61 | 111.76 | 112.22 | 112.56 | 111.91 | 111.54 | 111.34 | 111.43 | 111.23 | 111.46 | 111.67 | 111.68 | 113.03 | 111.16 | |
| 2018 | 111.69 | 111.66 | 111.45 | 111.28 | 112.29 | 111.65 | 111.08 | 111.14 | 111.48 | 111.91 | 111.84 | 111.63 | 111.59 | 112.56 | 110.94 | |
| 2019 | 111.67 | 111.72 | 111.52 | 112.03 | 113.36 | 112.29 | 111.35 | 111.04 | 110.98 | 111.08 | 111.51 | 111.49 | 111.67 | 113.69 | 110.87 | |
| 2020 | 111.57 | 111.63 | 111.48 | 112.15 | 111.89 | 111.60 | 111.33 | 111.25 | 111.35 | 111.66 | 111.86 | 111.66 | 111.62 | 112.40 | 111.12 | |
| 2021 | 111.72 | 111.72 | 111.63 | 111.45 | 111.29 | 111.03 | 111.31 | 111.17 | 111.09 | 111.48 | 111.36 | 111.46 | 111.39 | 111.98 | 110.83 | |
| 2022 | 111.66 | 111.60 | 111.53 | 112.14 | 112.15 | 112.00 | 111.33 | 111.19 | --- | 111.44 | 111.50 | 111.57 | 111.64 | 112.49 | 111.05 | |
| 2023 | 111.70 | 111.71 | 111.50 | 112.13 | 112.45 | 111.44 | 111.22 | 111.22 | 111.35 | 111.75 | 111.93 | 111.56 | 111.66 | 113.31 | 111.08 | |
| Mean - Moyenne | 111.55 | 111.55 | 111.51 | 111.86 | 111.94 | 111.59 | 111.34 | 111.20 | 111.19 | 111.36 | 111.54 | 111.58 | 111.52 | 113.69 (max) | 110.76 (min) | |
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Means | Daily Maximum | Daily Minimum | |