Country= U.S.A. Station= SAPPINGTON, MT. River= JEFFERSON RIVER Area= 25950274.78 Lat= 45.8 Lon= -111.75 Source= USGS PointID= 6034500 Area Units= km2 Discharge Units= m3/sec Starting Year= 1940 Ending Year= 1996 Total Years= 57 Total Usable Years= 56 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1940 1.08 2.51 18.24 142.3 46.89 30.36 6.26 5.13 3.08 2.88 4.5 3.06 22.19 1941 2.29 2.23 27.67 23.89 2.01 10.31 2.59 2.19 2.99 1.88 3.41 4.96 7.2 1942 1.5 2.05 44.3 13.87 3.94 63.84 31.65 6.99 6.98 5.43 8.5 4.54 16.13 1943 3.97 3.9 81.22 169.17 15.52 101.3 27.47 7.65 6.41 6.84 9.64 5.23 36.53 1944 3.73 3.63 49.35 36.46 5.82 37.6 16.03 4.99 1.84 2.88 4.5 2.71 14.13 1945 2.29 5.24 29.93 10.74 2.04 3.65 1.71 2.06 1.95 1.82 2.61 2.52 5.55 1946 2.58 6.55 45.48 5.07 1.72 7.58 15.36 1.95 4.98 2.45 2.39 2.78 8.24 1947 3.65 3.34 49.66 116.86 10.82 18.78 5.1 17.83 5.32 4.96 4.98 4.12 20.45 1948 3.35 2.11 6.6 22.11 13.28 44.39 32.31 11.62 6.35 8.71 8.21 2.2 13.44 1949 1.09 1.1 17.54 13.27 5.99 2.73 1.39 3.51 3.91 2.64 2.78 1.31 4.77 1950 1.02 1.44 2.51 178.74 13.6 55.6 10.34 7.27 13.21 4.97 3.51 2.63 24.57 1951 2.35 2.62 15.27 165.58 62.57 15.22 8.65 12.33 18.72 13.32 10.82 6.26 27.81 1952 3.92 8.42 10.19 592.56 104.49 16.74 25.21 10.49 7.15 7.55 6.99 4.01 66.48 1953 3.32 3.92 11.17 8.55 59.26 187.2 29.19 14.86 7.97 5.56 7.95 5.66 28.72 1954 4.65 18.58 12.12 126.39 14.1 38.73 10.65 28.25 11.05 14.5 10.53 8.59 24.84 1955 5.3 4.96 13.2 207.88 141.8 50.15 55.77 17.45 10.59 10 7.81 6.26 44.26 1956 5.47 4.97 20.8 21.2 11.23 8.79 8.33 12.34 8.06 4.54 5.33 4.48 9.63 1957 3.69 4.24 16.26 16.77 17.79 12.41 4.23 8.06 8.92 4.63 6.19 4.57 8.98 1958 3.88 3.33 5.13 57.42 6.44 6.54 4.05 3.68 4.78 3.16 3.33 3.96 8.81 1959 2.65 3.22 98.48 30.44 9.51 9.34 16.45 7.89 7.45 5.4 4.74 6.15 16.81 1960 3.24 8.94 103.67 70.41 32.17 11.49 6.33 6.95 5.76 3.17 4.32 3.05 21.63 1961 3.05 3.16 5.73 1.72 1.1 3.05 0.41 1.28 1.7 1.61 3.03 1.69 2.29 1962 1.84 2.73 17.91 22.7 15.48 27.76 101.33 8.53 3.97 4.94 3.85 4.02 17.92 1963 2.79 22.54 30.7 8.72 6.55 41 32.16 8.96 5.61 2.34 4.3 3.36 14.09 1964 3.36 3.48 3.45 2.63 19.88 26.45 7.73 4.19 3.13 1.81 3.52 4.31 7 1965 3.8 4.41 6.89 143.25 122.94 39.92 87.33 25.27 18.88 15.34 15.5 8.91 41.04 1966 5.57 5.43 60.46 32.82 14.07 7.57 12.94 8.74 4.4 3.7 6.1 4.71 13.88 1967 4.31 4.54 53.17 165.48 133.54 39.31 6.81 3.84 8.1 3.95 4.09 5.64 36.06 1968 4.1 5.38 28.43 5.53 6.82 8.42 3.48 6.44 4.24 10.24 10.22 5.18 8.21 1969 3.68 4.93 25.93 171.9 46.87 7.76 54.62 7.11 5.06 5.34 4.84 5.63 28.64 1970 3.79 3.92 15.29 47.2 99.27 62.07 18.11 10.74 6.39 4.53 6 4.6 23.49 1971 4.42 20.12 36.05 64.54 14.46 10.06 3.5 2.78 5.58 3.25 5.23 3.31 14.44 1972 3.2 2.93 51.06 10.22 14.71 64.08 10.97 17.43 8.51 7.14 5.24 2.78 16.52 1973 2.91 4.57 7.31 7.37 4.97 5.42 5.55 1.46 3.14 2.57 3.89 2.84 4.33 1974 23.86 14.43 22.34 62.99 72.29 84.49 19.54 25.2 10.97 8.43 9.69 7.24 30.12 1975 5.52 3.09 5.47 69.46 147.44 46.27 43.4 22.17 14.51 11.99 19.56 10.28 33.26 1976 8.71 13.3 78.41 44.65 5.28 22.53 43.78 14.37 7.79 5.67 6.76 4.3 21.3 1977 3.19 8.78 8.44 0.75 4.16 3.78 0.73 0.66 2.13 2.8 2.3 2.13 3.32 1978 3.48 2.9 35.97 287.06 67.41 26.86 28.3 12.47 60.54 15.33 10.47 7.1 46.49 1979 5.08 5.16 124.49 219.92 107.61 18.76 23.17 10.49 6.99 4.88 5.24 5.07 44.74 1980 4.18 3.55 3.95 10.27 1.24 1.49 3.65 5.18 4.27 3.7 4.45 3.44 4.11 1981 4.43 6.09 4.02 0.43 3.17 6.98 3.72 4.04 2.75 4.73 4.09 3.64 4.01 1982 2.24 3.64 77.93 109.46 18.74 105.64 17.14 7.8 6.62 5.99 5.88 4.09 30.43 1983 4.54 19.35 11.26 5.41 14.52 3.12 26.6 2.49 5.08 2.73 3.35 1.12 8.3 1984 2.68 2.93 3.18 1.56 0.57 0.79 0.1 0.1 0.56 1.3 1.94 1.76 1.46 1985 1.7 2.05 2.9 1.17 0.51 3.94 0.31 4.97 1.73 4.24 3.33 3.49 2.53 1986 4.59 5.91 189.09 7.48 107.12 33.65 10.61 4.97 38.35 193.6 21.74 13.79 52.58 1987 10.59 14.67 44.75 48.45 7.47 7.35 7.45 12.43 4.66 5.02 3.25 5.6 14.31 1988 3.27 3.21 4.03 1.08 5.66 2.92 5.81 1.64 0.36 2.18 2.69 2.44 2.94 1989 1.86 1.69 16.35 25.19 6.38 7.13 3.79 6.71 5.12 4.23 5.22 3.87 7.3 1990 9.58 5.01 20.42 4.8 8.13 12.54 4.08 7.66 4.81 3.27 5.03 3.32 7.39 1991 3.1 3.91 6.96 3.12 10.6 20.13 75.43 5.46 4.97 3.73 5.31 5.03 12.31 1992 4.52 4.84 4.86 0.82 0.3 3.44 4.77 1.87 2.66 4.03 3.32 2.29 3.14 1993 1.96 2.39 51.87 12.06 3.62 6.58 72.52 49.67 24.03 26.05 10.26 8.38 22.45 1994 7.28 7.33 125.08 29.71 21.55 35.96 4.6 4.3 5.35 5.01 5.29 4.03 21.29 1995 2.95 2.68 2.46 2.29 2.43 31.66 17.91 4.23 4.54 8.28 6.84 6.36 7.72 1996 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 4.13 5.76 33.31 65.39 30.32 27.89 19.31 9.09 7.95 9.13 6.16 4.55 18.58 Std Dev 3.25 4.9 37.29 99.02 41 32.63 22.59 8.42 9.38 25.25 3.88 2.29 14.36