Country= U.S.A. Station= BIRCHBANK, B.C. River= COLUMBIA RIVER Area= 88054.78 Lat= 49.17 Lon= -117.71 Source= USGS PointID= 12323000 Area Units= km2 Discharge Units= m3/sec Starting Year= 1903 Ending Year= 1993 Total Years= 91 Total Usable Years= 86 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1903 22.12 29.52 50.46 70.23 70.06 72.77 12.67 1.09 7.49 25.55 31.55 26.16 34.97 1904 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1905 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1906 22.18 31.16 48.06 104.87 119.3 144.21 35.1 23.27 38.08 31.61 36.29 42.32 56.37 1907 37.31 66.34 96.5 205.94 208.1 243.53 134.2 52.97 45.01 54.88 56.1 55.53 104.7 1908 53.47 51.18 73.78 79.37 53.02 113.63 28.86 18.29 22.74 44.8 47.37 38.54 52.09 1909 80.58 62.44 85.39 152.11 206.85 261.21 93.46 34.01 56.89 59.9 73.95 67.07 102.82 1910 69.74 60.24 168.61 143.21 110.57 29.65 3.99 7.41 14.57 31.02 34.64 37.5 59.26 1911 50.73 77.03 83.45 112.39 111.29 78.83 21.77 9.36 18.87 38.24 37.86 35.81 56.3 1912 37.48 42.49 48.12 89.73 127.88 162.29 61.5 44.08 36.3 46.88 64.57 31.91 66.1 1913 37.41 43.55 55.6 141.12 102.43 34.47 32.28 10.19 30.75 39.97 41.76 38.55 50.67 1914 50.91 49.97 75.08 144.07 167.58 137.92 39.45 19.83 33.04 46.57 44.1 43.54 71.01 1915 42.95 50.91 46.36 48.68 37.37 24.21 6.07 4.11 17.83 25.46 28.38 30.54 30.24 1916 38.49 43.81 102.29 103.42 89.05 58.3 21.6 15.51 21.74 40.43 39.41 45.29 51.61 1917 50.3 52.54 55.02 120.25 171.5 202.1 79.43 36.7 39.83 52.99 55.91 55.59 81.01 1918 54.08 51.18 73.28 73.46 54.94 38.83 18.1 15.69 23.51 42.59 46.74 50.57 45.25 1919 47.17 48.94 64.38 73.86 46.5 13.18 3.51 6.4 18.92 36.18 41.5 42.95 36.96 1920 49.4 47.22 48.84 71.09 139.28 66.84 13.22 10.03 29.54 45.69 44.42 46.81 51.03 1921 53.71 53.59 88.88 96.91 153.18 159.17 33.68 16.66 29.83 35.47 52.02 61.66 69.56 1922 63.94 63.43 90.84 146.98 225.7 133.87 26.83 23.28 23.02 37.95 52.07 62.74 79.22 1923 64.7 60.72 74.44 127.26 149.2 132.01 32.04 26.36 34.5 55.81 51.98 65.49 72.88 1924 66.82 72.15 56.26 86.26 45.99 18.16 11.95 11.83 22.27 33.42 40.44 43.57 42.43 1925 47.86 61.36 52.06 71.36 66.55 42.86 8.66 15.82 25.8 35.46 40.64 40.23 42.39 1926 38.89 43.64 49.84 68.35 44.42 5.66 10.97 13.4 20.13 35.54 40.85 43.69 34.62 1927 47.55 58.29 52.88 68.39 73.86 50.17 8.71 12.28 15.76 31.11 36.28 35.86 40.93 1928 36.52 36.04 56.31 58.41 68.87 23.01 1.63 8.91 18.25 29.14 38.72 39.26 34.59 1929 34.6 35.71 66.21 76 67.54 26.27 3.52 1.31 15.37 32.54 33.54 31.53 35.35 1930 23.52 45.82 40.6 44.88 31.73 4.44 2.2 14.59 17.42 26.68 30.96 28.61 25.95 1931 28.61 32.3 34.56 24.74 4.7 0.8 0.75 0.73 0.75 5.65 16.47 20.49 14.21 1932 20.37 25.32 53.63 79.52 92.04 40.63 4.24 1.15 6.07 14.1 21.15 24.35 31.88 1933 24.01 26.29 40.99 54.6 63.14 22.22 0.95 0.9 0.92 9.25 20.87 27.77 24.33 1934 26.3 24.8 22.43 13.73 0.77 0.67 0.63 0.55 3.13 8.74 20.36 19.85 11.83 1935 16.68 25.91 31.31 34.41 35.91 17.84 0.6 0.57 0.54 9.77 18.85 17.85 17.52 1936 23.51 32.71 36.9 98.76 107.77 37.68 0.6 0.59 2.89 20.73 30.73 28.2 35.09 1937 25.69 30.26 61.21 63.94 73.04 19.18 2.94 0.5 1.53 23.76 24.65 32.45 29.93 1938 27.06 36.54 51.5 75.37 79.4 15.65 9.41 0.5 2.73 24.69 40.8 37.84 33.46 1939 27.49 31.47 59.25 50.17 23.92 1.4 0.59 0.56 12.13 20.72 18.92 22.34 22.41 1940 24.89 32.43 39.59 34.84 7.27 0.98 0.57 0.56 7.32 17.22 22.87 24.08 17.72 1941 21.9 37.45 38.82 41.91 24.56 3.19 0.63 1.99 4.4 22.07 24.13 28.4 20.79 1942 26.7 31.27 46.01 75.64 61.16 9.72 1 0.59 3.26 16.82 26.34 30.74 27.44 1943 36.45 40.47 52.03 98.09 58.12 56.67 4.18 3.19 6.52 26.2 32.15 29.9 37 1944 25.92 28.43 39.89 48.96 54.41 37.07 0.91 0.72 0.86 12.67 25.27 21.6 24.73 1945 22.8 46.93 42.54 43.72 63.36 77.39 2.64 10.35 19.3 22.08 39.69 39.63 35.87 1946 39.89 33.68 69.72 123.21 73.41 30.72 3.76 16.2 20.08 34.76 47.28 49.84 45.21 1947 41.32 47.9 51 55.11 59.63 41.31 6.74 23.54 28.85 37.51 45.11 45.58 40.3 1948 36.39 46 40.79 76.3 98.43 49.78 8.43 13.14 18.29 37.05 40.73 44.52 42.49 1949 46.75 51.68 69 75.69 71.57 24.98 3.65 8.33 17.05 43.83 39.27 41.68 41.12 1950 58.55 66.47 63.53 102.78 124.4 97.29 52.93 38.32 45.02 65.22 66.95 74.18 71.3 1951 71.11 85.39 81.51 101.96 104.34 43.25 22.31 37.22 37.25 49.93 52 57.27 61.96 1952 63.62 61.2 67.91 147.11 125.62 50.72 22.98 24.93 30.3 38.25 43.8 52.27 60.73 1953 55.78 54.4 50.94 58.2 43.67 50.39 2.02 4.72 5 16.21 27.11 27.14 32.96 1954 29.03 33.99 38.72 43.46 9.36 6.14 1.29 0.98 7.56 16.13 21.51 21.62 19.15 1955 24.75 24.63 39.06 54.71 40.69 21.99 0.93 2.23 6.37 17.53 28.47 48.53 25.82 1956 51.3 34.91 54.04 75.29 70.36 15.41 2.16 3.98 4.42 18.34 25.61 31.09 32.24 1957 30.56 44.37 49.6 60.98 100.03 61.2 3.4 12.68 18.32 36.59 38.63 34.29 40.89 1958 34.29 51.88 45.43 76.09 62.68 7.95 1.93 10.58 15.91 19.33 29.93 32.34 32.36 1959 30.49 36.5 33.58 47.47 11.36 1.94 1 0.7 8.71 21.77 21.45 21.84 19.73 1960 23.73 26.62 51.35 55.47 22.33 0.64 0.52 0.66 2.06 10.57 24.12 21.79 19.99 1961 18.43 29.76 32.13 27.55 1.22 0.67 0.72 0.69 4.57 15.2 20.79 21.52 14.44 1962 20.53 80.5 44.86 86.49 68.21 23.08 1.92 0.62 0.62 13.73 22.44 21.72 32.06 1963 21.79 47.69 26.65 45.29 37.28 27.01 0.54 0.54 8.75 14.89 29.01 23.61 23.59 1964 23.86 26 28.06 80.17 79.84 80.24 2.73 0.64 2.17 15.27 25.71 46.65 34.28 1965 45.31 53.68 37.36 73.38 69.65 54.06 13.9 27.34 43.79 50.91 62.53 60.52 49.37 1966 62.59 62.36 75.17 68.41 32.29 0.74 0.61 0.59 2.32 11.41 20.83 25.04 30.2 1967 27.88 28.73 40.26 58.36 81 89.79 14.54 19.33 25.69 41.26 49.38 45.94 43.51 1968 43.15 37.8 57.89 49.35 22.48 42.42 0.62 13.97 5.64 28.64 46.71 46.58 32.94 1969 63.43 52.28 70.45 110.89 47.98 15.51 6.61 0.64 2.87 23.29 35.33 39.33 39.05 1970 45.03 35.1 33.79 34.28 50.25 36.64 0.84 0.67 8.06 25.63 33.33 48.02 29.3 1971 66.59 72.31 78.93 116.76 151.32 167.47 61.51 28.5 53.85 70.02 70.06 71.8 84.09 1972 74.79 71.29 96.35 110.64 111.88 81.6 37.07 21.46 48.75 52.52 63.26 58.14 68.98 1973 62.33 64.94 83.41 84.92 76.66 17.74 12.72 0.66 38.64 45.53 42.88 51.2 48.47 1974 56.41 57.44 96.22 90.23 89.59 67.07 17.55 18.09 26.25 29.59 32.53 43.8 52.06 1975 47.39 41.74 59.41 62.2 111.01 95.17 34.35 20.66 32.18 69.09 71.57 57.81 58.55 1976 53.13 55.72 79.68 113.86 100.75 34.29 4.45 9.38 21.74 39.15 42.25 43.91 49.86 1977 43.17 29.6 31.95 17.83 10.95 0.69 0.43 5.09 13.56 5.46 18.22 22.08 16.59 1978 27.54 33.32 53.94 93.15 81.91 37.96 0.81 1.28 9.61 17.8 27.19 28.61 34.43 1979 26.36 31.39 59.95 62.98 46.43 6.26 0.49 0.44 0.39 14.93 24.93 21.08 24.64 1980 54.19 54.91 45.72 70.58 125.48 126.32 21.57 21.08 45.43 49.36 57.07 53.4 60.43 1981 45.69 33.51 31.46 33.45 32.77 26.9 0.54 0.4 0.66 20.6 19.21 25.07 22.52 1982 31.7 57.53 73.24 95.7 144.11 72.28 14.94 23.92 56.72 78.15 80.33 74.95 66.96 1983 71.24 76.26 107.68 101.56 163.26 198.54 113.58 79.15 80.34 114.99 120.92 114.29 111.82 1984 93.88 88.59 116.86 157.91 220.24 213.13 82.45 73.87 91.54 107.11 112.8 92.74 120.93 1985 70.63 66.91 84.17 179.55 76.47 17.71 18.37 12.46 37.46 51.02 58.89 58.02 60.97 1986 58.69 153.96 162.24 196.06 212.14 189.44 92.79 57.49 81.52 85.21 94.53 80.92 122.08 1987 58.63 64.65 55.92 35.69 28.38 11.86 6.65 6.35 5.78 14.39 21.96 27.5 28.15 1988 28.29 27.2 40.14 36.5 9.69 0.86 0.81 0.84 3.55 7.92 18.02 19.96 16.15 1989 20.86 20.64 56.71 62.73 23.47 3.09 0.74 2.68 4.87 7.39 23.33 23.86 20.86 1990 27.06 24.08 30.91 20.18 4.58 4.53 0.57 0.5 1.23 9.72 21.51 17.39 13.52 1991 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1992 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1993 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 42.2 47.69 59.91 80.78 79.32 56.58 17.16 13.07 20.62 33.3 40.06 40.89 44.3 Std Dev 17.15 19.74 25.95 39.54 53.73 61.09 26.85 15.97 19.31 20.99 19.9 17.9 24.25