Country= U.S.A. Station= FORT BENTON, MT. River= MISSOURI RIVER Area= 25976424.46 Lat= 47.82 Lon= -110.66 Source= USGS PointID= 6090800 Area Units= km2 Discharge Units= m3/sec Starting Year= 1954 Ending Year= 1996 Total Years= 43 Total Usable Years= 39 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1954 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1955 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1956 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1957 142.99 172.09 171.72 163.98 205.9 389.7 177.5 143.95 146.53 149.37 151.08 163.27 181.51 1958 170.47 171.97 162.95 190.71 280.07 317.12 237.07 155.06 155.2 157.76 153.21 142.87 191.2 1959 136.52 128.41 147.45 134.54 288.53 445.56 203.38 111.81 88.03 170.52 292.06 326.23 206.09 1960 134.24 122.97 133.75 244.64 342.99 265.01 127.13 130.71 134.03 146.65 141.43 136.73 171.69 1961 146.98 158.28 113.85 99.84 126.13 144.15 122.78 136 120.56 115.99 149.37 153.5 132.29 1962 152.55 147.99 167.66 149.68 224.9 372.49 152.84 152.8 149.41 162.95 154.53 134.78 176.88 1963 147.77 185.42 145.38 132.48 236.86 485.83 205.23 136.38 143.77 152.67 158.83 156.82 190.62 1964 147.52 144.88 137.09 133.31 379.68 854.04 313.55 152.64 153.06 152.63 169.2 176.95 242.88 1965 192.44 209.94 211.22 291.81 457.82 569.55 399.06 173.28 228.98 338.07 295.42 195.3 296.91 1966 180.71 167.47 211.26 220 230.8 176.3 136.13 133.04 110.22 114.27 118.41 174.38 164.42 1967 206.61 220.64 215.34 177.49 289.16 726.52 362.31 194.19 163.46 154.03 160.85 165.09 252.97 1968 204.23 220.04 306.25 260.31 302.64 416.17 251.92 190.58 180.58 221.67 216.13 187.86 246.53 1969 213.01 229.16 280.59 372.14 408.5 370.41 388.91 193.49 157.16 152.13 171.33 188.88 260.48 1970 188.11 192.94 193.1 246.84 494.27 549.92 310.87 209.75 179.31 181.35 214.96 199.54 263.41 1971 233.09 256.2 250.92 354.78 609.18 437.4 349.42 210.96 203.08 213.56 195.68 182.3 291.38 1972 210.21 230.87 244.62 286.86 399 455.97 253.45 215.15 212.67 215.09 206.6 199.17 260.81 1973 185.6 177.76 141.18 130.21 170.6 189.77 166.75 122.58 109.47 139.34 175.4 179.54 157.35 1974 198.47 196.68 201.94 234.97 286.48 527.64 274.82 206.46 179.58 155.43 139.36 175.04 231.41 1975 195.32 194.83 230.11 267.06 572.01 815.25 667.2 257.39 227.32 240.24 286.34 267.57 351.72 1976 223.76 220.47 244.74 373.67 701.71 495.55 275.86 213.05 198.74 201.22 202.51 204.02 296.27 1977 195.01 193.08 157.11 172.57 163.42 106.42 108.08 124.3 108.3 131 158.38 177.14 149.57 1978 191.74 216.63 278.8 254.15 417.45 390.63 350.64 217.36 205.86 167.38 193.24 192.33 256.35 1979 203.92 195.94 245.03 265.18 333.1 265.76 162.35 149.96 133.55 129.68 125.06 156.49 197.17 1980 174.33 159.81 167.67 198.78 265.43 609.38 274.95 174.41 127.65 167.62 182.13 183.96 223.84 1981 194.92 210.35 209.24 172.8 452.13 705.19 246.28 172.51 132.55 127.98 157.51 173.97 246.29 1982 203.08 229.94 230.47 257 352.14 624.48 431.53 214.85 169.32 189.44 207.13 196.54 275.49 1983 215.92 214.98 229.97 227.08 308.63 285.97 367.22 214.95 176.95 197.76 251.91 197.09 240.7 1984 219.87 212.02 219.47 239.79 335.24 501.31 348.67 233.69 282.93 231.22 208 196.94 269.1 1985 198.86 196.46 192.35 209.31 248.87 163.01 110.54 123.02 126.5 201.9 212.17 188.42 180.95 1986 186.21 199.18 217.05 236.48 332.59 326.68 207.95 173.53 168.34 160.13 206.69 198.98 217.82 1987 194.15 164.61 157.96 174.41 169.06 135.13 148.75 131.33 131.83 120.01 141.6 136.36 150.43 1988 146.1 142.69 133.26 135.78 167.5 133.31 113.67 105.32 112.2 108.43 120.22 114.28 127.73 1989 137.46 151.14 197.42 210.82 302.11 244.22 143.21 136.36 132.67 133.64 158.05 177.43 177.04 1990 174.79 188.81 184.28 214.37 206.27 226.12 141.74 146.94 138.29 121.74 125.48 149.06 168.16 1991 175.79 161.28 133.3 151.75 309.19 391.03 224.14 165.21 158.44 146.44 144.58 162.5 193.64 1992 165.86 162.94 145.27 121.33 126.39 132.32 123.12 108.84 108.56 112.5 111.86 113.17 127.68 1993 141.86 137.92 144.37 157.64 344.87 409.84 382.83 281.65 260.1 224.8 206.96 208.08 241.74 1994 201.85 179.65 185.12 219.9 243.26 150.86 130.46 116.83 115.43 126.66 125.34 128.04 160.28 1995 127.48 150.7 166.6 201.55 424.64 482.01 358.8 206.15 204.08 196.82 200.02 210.66 244.13 1996 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 181.02 185.05 192.46 212.46 320.76 392 250.03 170.17 159.86 167.44 179.21 178.75 215.77 Std Dev 28.33 31.83 46.38 66.35 127.87 194.34 118.33 43.2 43.72 45.43 46.24 37.97 53.12