Back to ListOttawa River at Mattawa

Monthly and Annual Mean Water Levels in Metres From 1950 Annual Extremes
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Means Daily Maximum Daily Minimum
1950 150.95 151.08 151.11 151.13 152.52 152.20 152.59 152.61 152.22 152.40 152.40 151.80 151.92 153.46 150.76
1951 151.86 151.96 151.86 153.41 152.91 152.32 152.42 152.06 152.22 152.95 153.29 153.02 152.52 154.47 151.38
1952 152.57 152.26 152.04 151.97 152.89 152.73 151.89 152.33 152.13 151.96 152.33 152.45 152.30 153.69 151.19
1953 152.62 152.53 152.76 153.38 152.57 152.47 152.46 152.41 152.40 152.50 152.12 152.52 152.56 154.14 151.65
1954 152.58 152.47 152.48 152.00 151.79 152.99 152.51 152.42 152.54 153.20 153.07 152.82 152.57 154.26 150.68
1955 152.58 152.62 152.26 151.88 152.45 152.13 151.97 151.95 151.83 152.15 152.87 152.70 152.28 153.35 150.96
1956 152.17 152.10 151.67 151.65 152.55 152.89 152.72 152.56 152.74 153.06 152.62 152.42 152.43 153.87 150.22
1957 152.36 152.54 152.44 152.36 152.76 152.57 153.45 151.90 152.36 152.57 152.90 152.87 152.59 154.63 151.01
1958 152.75 152.72 152.56 151.40 151.52 152.23 152.30 151.96 152.01 152.50 152.68 152.60 152.27 153.08 150.26
1959 152.14 152.13 151.92 151.52 152.58 152.45 152.02 151.78 152.26 152.43 152.85 152.85 152.24 153.23 149.98
1960 152.73 152.77 152.45 152.30 154.62 153.00 153.34 152.80 152.71 152.75 152.81 152.68 152.91 155.78 151.44
1961 152.68 152.53 152.35 152.19 152.45 152.73 152.60 152.56 152.56 152.71 152.59 152.67 152.55 153.04 151.43
1962 152.75 152.67 152.50 152.18 152.78 152.46 151.91 151.90 152.36 152.58 152.48 152.43 152.42 153.31 151.52
1963 152.39 152.60 152.46 151.73 152.19 152.46 152.08 152.34 152.53 152.57 152.58 152.68 152.38 152.91 150.88
1964 152.79 152.76 152.34 151.78 152.77 152.91 152.63 152.55 152.49 152.61 152.62 152.68 152.58 153.53 150.78
1965 152.74 152.77 152.22 151.25 152.62 152.70 152.49 152.63 153.02 153.38 152.91 152.76 152.63 154.00 150.21
1966 152.82 152.82 152.34 152.34 152.62 152.86 152.63 152.74 152.65 152.81 153.11 153.63 152.78 154.19 151.73
1967 153.02 153.24 152.35 152.81 153.48 153.36 152.75 152.62 152.60 152.59 152.92 152.76 152.87 154.38 152.00
1968 152.83 152.77 152.38 152.14 152.28 152.64 152.60 152.67 152.66 152.69 152.54 152.46 152.55 153.05 151.21
1969 152.50 152.54 152.17 151.81 152.74 152.88 152.68 152.71 152.64 152.74 153.17 152.93 152.63 153.57 151.23
1970 152.81 152.75 152.26 151.62 152.66 153.30 153.35 152.89 152.75 152.76 152.73 152.78 152.72 153.89 151.08
1971 152.75 152.75 152.33 151.87 152.71 152.60 152.34 152.46 152.12 152.22 152.43 152.60 152.43 153.02 151.06
1972 152.67 152.68 152.44 151.58 152.86 152.71 152.56 152.66 152.58 152.69 152.78 152.68 152.58 153.17 151.03
1973 152.67 152.76 152.44 152.73 153.18 152.94 152.75 152.51 152.58 152.63 152.80 152.74 152.73 153.87 151.77
1974 152.58 152.62 152.43 152.07 153.54 153.49 153.01 152.58 152.47 152.59 152.84 152.76 152.75 154.06 151.30
1975 152.71 152.78 152.15 151.51 152.65 152.96 152.51 152.40 152.37 152.45 152.50 152.68 152.47 153.37 150.75
1976 152.67 152.68 152.22 153.11 153.53 152.65 152.59 152.48 152.45 152.52 152.49 152.67 152.67 154.02 151.40
1977 152.67 152.66 151.86 152.95 152.88 152.53 152.56 152.44 152.50 152.52 152.69 152.76 152.58 153.69 151.43
1978 152.75 152.83 151.81 151.18 152.49 152.63 152.52 152.43 152.44 152.63 152.64 152.64 152.41 152.99 150.79
1979 152.67 152.71 152.04 152.56 154.06 153.12 152.70 152.67 152.62 152.67 153.10 153.11 152.84 154.85 151.55
1980 153.05 152.82 151.83 152.41 153.19 152.43 152.55 152.41 152.51 152.73 152.77 152.76 152.62 153.88 151.21
1981 152.60 152.72 152.33 153.25 152.87 152.91 152.59 152.51 152.57 152.60 152.68 152.63 152.69 154.05 151.78
1982 152.68 152.72 151.87 151.51 152.46 152.56 152.48 152.44 152.37 152.49 152.72 152.87 152.43 153.06 150.69
1983 152.95 152.83 152.30 151.94 153.37 153.24 152.53 152.46 152.23 152.51 152.66 152.67 152.64 154.34 151.62
1984 152.80 152.77 151.92 152.15 152.66 153.01 152.72 152.45 152.47 152.51 152.87 152.92 152.60 153.53 151.24
1985 152.89 152.75 151.92 151.92 153.24 152.66 152.80 152.69 152.50 152.47 152.53 152.63 152.58 153.76 151.21
1986 152.66 152.82 151.61 152.43 152.96 152.65 152.46 152.40 152.41 152.58 152.59 152.55 152.51 153.30 151.07
1987 152.63 152.73 151.59 151.85 152.11 152.10 152.18 152.21 151.95 151.99 152.42 152.61 152.20 152.97 150.90
1988 152.75 152.79 151.70 152.42 152.93 152.48 152.38 152.59 152.64 153.09 153.33 153.02 152.67 153.73 151.00
1989 152.97 152.84 151.70 151.84 152.96 153.17 152.50 152.07 152.00 151.88 152.45 152.64 152.42 153.92 151.09
1990 152.79 152.47 151.59 151.83 152.73 152.62 152.60 152.39 152.40 152.87 152.92 153.21 152.54 153.88 151.18
1991 152.91 152.90 151.81 152.46 152.67 152.45 152.35 152.29 152.35 152.51 152.67 152.66 152.50 153.28 151.15
1992 152.77 152.77 151.63 151.22 152.60 152.47 152.52 152.42 152.62 152.61 152.93 152.77 152.44 153.19 150.58
1993 152.70 152.79 151.55 151.25 152.20 152.64 152.43 152.35 152.34 152.75 152.95 152.76 152.39 153.40 150.53
1994 152.83 153.03 151.81 151.22 152.71 152.74 152.85 152.57 152.45 152.53 152.71 152.65 152.51 153.22 150.62
1995 152.81 152.57 152.03 151.50 153.10 152.93 152.39 152.35 152.32 152.34 152.58 152.73 152.47 153.88 150.97
1996 152.70 152.76 151.94 151.53 153.49 152.75 152.76 152.54 152.42 152.50 152.65 152.62 152.56 153.88 150.73
1997 152.74 152.91 152.04 152.15 153.19 152.82 152.64 152.46 152.46 152.50 152.51 152.53 152.57 153.59 150.88
1998 152.63 152.68 151.74 152.68 152.42 152.47 152.34 152.29 152.30 152.35 152.37 152.67 152.41 153.06 150.63
1999 152.73 152.76 151.77 151.84 152.34 152.73 152.54 152.47 152.44 152.86 153.07 153.08 152.56 153.41 150.68
2000 152.87 152.85 152.41 152.24 152.57 152.58 152.48 152.54 152.41 152.26 152.42 152.64 152.52 153.02 151.80
2001 152.65 152.50 151.90 152.08 152.79 152.53 152.36 152.24 152.34 153.14 153.29 153.27 152.59 153.73 150.51
2002 152.98 152.84 152.09 152.49 153.23 153.11 152.60 152.48 152.36 152.46 152.38 152.43 152.62 153.85 151.25
2003 152.68 152.75 151.94 151.59 152.29 152.51 152.53 152.63 152.36 152.67 152.95 152.88 152.48 153.44 151.11
2004 152.87 152.86 151.88 152.21 153.13 152.63 153.07 152.41 152.38 152.35 152.37 152.60 152.56 154.04 151.30
2005 152.64 152.71 151.69 152.16 152.45 152.41 152.39 152.37 152.33 152.36 152.66 152.82 152.41 153.01 150.89
2006 152.84 152.87 152.04 152.76 152.61 152.47 152.42 152.38 152.36 152.76 153.01 153.13 152.64 153.40 151.36
2007 153.05 152.80 151.89 151.66 152.35 152.79 152.57 152.29 152.30 152.25 152.43 152.43 152.40 153.37 151.27
2008 152.61 152.83 151.83 151.84 153.16 152.95 152.94 152.70 152.55 152.50 152.64 152.67 152.60 153.48 150.93
2009 152.80 152.81 151.82 152.52 153.44 152.88 152.63 152.62 152.42 152.60 152.87 152.62 152.67 153.83 151.31
2010 152.60 152.75 151.80 151.99 152.28 152.32 152.28 152.26 152.47 152.61 152.54 152.63 152.37 153.22 151.21
2011 152.80 152.71 151.42 151.73 152.90 152.55 152.50 152.38 152.33 152.35 152.56 152.54 152.40 153.18 151.11
2012 152.81 152.82 152.35 152.56 152.42 152.36 152.23 152.31 152.35 152.61 152.97 152.65 152.53 153.47 151.82
2013 152.62 152.84 151.74 152.00 153.66 153.14 152.33 152.47 152.48 152.54 153.27 152.76 152.65 154.14 151.35
2014 152.71 152.80 151.51 151.63 153.56 152.67 152.53 152.49 152.75 153.13 153.13 152.86 152.65 154.33 150.81
2015 153.32 152.87 151.95 151.91 152.92 152.59 152.36 152.43 152.40 152.39 152.61 153.04 152.57 153.91 150.93
2016 153.16 152.85 152.63 152.60 152.80 152.62 152.48 152.41 --- --- --- --- --- 155.04 152.15
Mean 152.66 152.67 152.06 152.06 152.79 152.70 152.55 152.43 152.42 152.59 152.72 152.74 152.53 153.66 151.06
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Means Daily Maximum Daily Minimum