Country= U.S.A. Station= THREE FORKS MT River= JEFFERSON RIVER Area= 25950274.78 Lat= 45.89 Lon= -111.59 Source= USGS PointID= 6036650 Area Units= km2 Discharge Units= m3/sec Starting Year= 1936 Ending Year= 1996 Total Years= 61 Total Usable Years= 60 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1936 76.91 89.89 121.11 163.48 366.53 250.78 115.63 105.19 106.15 113.58 106.57 91.2 142.25 1937 80.38 73.63 125.59 149.44 181.27 213.52 114.45 79.89 79.79 100.04 90.8 92.4 115.1 1938 84.95 92.18 107.15 140.96 385.24 602.02 371.58 106.57 108.89 114.18 150.55 133.09 199.78 1939 115.08 103.94 190.25 248.1 381.2 295.93 127.42 99.13 97.08 107.59 105.9 97.19 164.07 1940 89.98 90.03 127.63 166.86 274.98 265.8 104.88 96.09 90.8 100.85 100.69 116.22 135.4 1941 105.59 107.78 129.46 140.8 137.47 246.67 123.17 95.08 123.16 173.79 160.03 160.95 142 1942 133.96 133.64 183.5 384.09 491.35 746.62 218.63 105.21 107.75 134.89 156.02 155.24 245.91 1943 143.37 193.77 252.48 501.78 505.41 1117.2 419.4 166.12 137.21 148.53 155.74 148.53 324.13 1944 136.84 137 168.39 175.36 232.33 591.94 347.3 140.7 130.36 138.63 143.17 140.54 206.88 1945 130.9 137.84 166.43 150.39 284.89 588.24 224.49 107.92 119.79 139.53 142.04 129.08 193.46 1946 144.78 146.85 166.04 246.67 328.1 367.62 186.6 115.16 145.28 176.81 177.04 193.33 199.52 1947 156.11 157.97 287.55 367.08 657.87 696.98 261.83 127.43 155.01 204.62 184.69 172.45 285.8 1948 164.4 165.22 186.19 376.94 768.94 1471.45 450.94 218.19 176.65 173.56 190.55 146.16 374.1 1949 135.1 146.64 208.82 339.93 495.91 455.12 151.23 99.45 111.48 150.17 167.55 137.87 216.61 1950 118.29 156.25 194.2 230.1 358.73 761.54 389.51 220.41 164.43 199.94 200.71 199.27 266.11 1951 159.59 150.43 232.93 335.37 686.28 671.3 364.16 167.18 191.39 216.35 199.93 156.65 294.3 1952 142.5 197.24 279.37 443.63 721.17 467.11 237.8 141.23 123.3 134.72 157.97 149.54 266.3 1953 166.7 160.94 165 177.33 397.94 1269.07 281.34 130.9 112.32 115.93 136.89 161.25 272.97 1954 146.09 178.36 154.46 186.63 314.6 369.49 217.29 120.69 117.22 147.06 164.02 154.95 189.24 1955 159.4 153.72 161.68 197.38 289.03 356.51 264.67 159.1 145.45 170.19 162.79 186.44 200.53 1956 186.71 187.77 189.7 201.88 355.1 418.49 156.51 155.58 152.7 161.32 159.82 163.54 207.43 1957 154.88 183.45 240.05 211.56 268.3 487.34 213.56 155.51 165.93 178.5 186.2 180.23 218.79 1958 184.88 189.77 183.29 221.7 332.97 404.91 284.6 176.16 175.91 190.4 197.07 190.88 227.71 1959 170.18 160.29 231.52 192.84 387.38 588.05 312.22 162.46 135.44 186.86 295.95 346.02 264.1 1960 148.4 138.02 159.97 284.68 406.05 329.69 153.99 147.05 157.54 176.48 176.55 155.97 202.87 1961 156.23 166.75 124.74 115.02 163.05 203 142.27 143.67 143.82 150.24 192.98 170.82 156.05 1962 165.79 184.97 197.29 186.99 293.95 452.33 169.36 177.28 197.07 189.76 163.21 146.22 210.35 1963 158.05 243.98 158.21 154.13 279.82 552.37 236.95 147.39 149.28 154.78 159.58 154.42 212.41 1964 157.48 170.61 147.42 165.86 485 1186.67 420.74 238.13 184.51 188.45 202.78 225.37 314.42 1965 251.47 287.72 247.63 358.95 535.28 721.89 506.74 264.98 328.08 434.44 353.19 219.91 375.86 1966 200.96 188.61 254.22 272.24 298.8 269.92 202.68 162.21 145.34 148.45 152.73 192.16 207.36 1967 223.19 248.99 256.1 217.7 353.51 929.27 473.44 228.36 193.55 188.3 189.37 194.51 308.02 1968 237.13 256.61 350.1 298.08 365.41 512.44 306.18 223.15 205.84 250.68 227.01 200.67 286.11 1969 229.64 248.48 344.92 428.91 460.38 413.17 466.97 223.99 185.84 173.78 187.85 206.6 297.54 1970 217 223.25 214.7 269.65 634.03 694.43 381.43 267.22 237.25 219.44 229.03 226.32 317.81 1971 246.54 289.95 265.42 344.6 639.51 507.35 358.21 222.65 209.7 219.17 207.28 198.96 309.11 1972 213.11 228.39 279.43 338.04 456.91 552.94 288.5 253.81 241.64 247.39 225.91 206.47 294.38 1973 196.85 206.28 159.23 151.23 197.98 216.79 181.42 137.85 125.58 149.91 184.59 192.1 174.98 1974 214.73 213.83 224.26 284.55 379.08 598.15 326.92 238.82 200.32 163.82 151.42 185.28 265.1 1975 217.45 211.67 237.07 301.89 725.83 990.43 840.28 336.52 268.19 274.22 303.4 305.7 417.72 1976 254.76 250.78 300.74 424.47 800.27 575.21 331.04 254.08 242.55 228.16 214.74 209.07 340.49 1977 210.98 199.72 163.05 189.94 195.47 131.57 114.04 128.39 112.98 142.85 176.32 196.21 163.46 1978 210.37 237.05 410.41 354.91 516.56 480.73 408.51 241.96 249.15 197.4 218.67 222.22 312.33 1979 240.69 236.95 312.35 328.53 415.35 334.23 204.11 186.65 155.7 138.31 137.58 167.99 238.2 1980 188.04 174.88 183.36 225.4 298.37 680.27 341.92 200.62 141.19 183.62 210.88 215.36 253.66 1981 216.33 229.26 239.08 205.73 576.88 874.9 295.45 182.29 138.17 137.27 162.47 176.52 286.2 1982 218.41 247.87 242.49 276.02 385.95 798.26 508.26 229.24 193.54 216.84 209.33 200.78 310.58 1983 218.15 213.27 228.87 235.21 349.64 349.81 427.48 230.59 189.24 205.98 269.33 209.63 260.6 1984 232.29 223.54 230.08 268.67 379.18 551.33 381.67 249.8 311.58 244.65 209.88 206.55 290.77 1985 214.57 208.13 196.61 214.82 256.1 170.25 116.24 139.78 149.35 231.75 262.38 246.27 200.52 1986 232.88 270.58 258.89 259.42 349.3 364.28 226.01 192.25 197.16 206.31 220.86 211.01 249.08 1987 212.08 173.84 166.81 189.87 183.58 148.45 153.37 145.07 150.15 135.26 155.71 158.18 164.36 1988 164.73 158.75 142.64 149.78 188.18 141.22 119.23 114.11 117.6 109.69 114.84 115.01 136.31 1989 137.66 163.03 230.19 224.2 339.99 284.66 165.83 151.72 144.58 153.05 167.83 196.47 196.6 1990 195.34 212.78 199.53 247.82 249.13 276.7 161.98 178.97 160.6 139.45 137.21 162.1 193.47 1991 203.15 187.62 158.19 182.28 396.73 533.96 327.4 202.9 193.61 163.35 155.38 176.1 240.06 1992 171.75 164.88 149.92 132.7 136.46 138.12 134.91 120.28 119.77 123.45 122.9 131.17 137.19 1993 165.43 167.17 176.59 184.45 376.27 472.99 487.14 338.4 322.72 279.42 243.77 240.9 287.94 1994 231.85 206.71 215.49 274.49 334.14 207.86 146.22 130.86 127.33 138.12 138.98 141.08 191.09 1995 140.45 164.05 179.12 210.71 500.95 675.93 494.73 250.26 233.86 219.93 220.66 242.28 294.41 1996 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 176.36 184.89 207.63 248.37 391.77 517.09 282.35 175.54 166.63 176.7 182.49 180.16 240.83 Std Dev 45.25 48.91 60.93 87.72 158.76 287.21 140.44 59.35 55.1 54.3 49.34 45.46 66.43