Country= U.S.A. Station= MISSOULA, MT. River= CLARK FORK Area= 44053817.12 Lat= 46.87 Lon= -114 Source= USGS PointID= 12341500 Area Units= km2 Discharge Units= m3/sec Starting Year= 1929 Ending Year= 1993 Total Years= 65 Total Usable Years= 64 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1929 252.72 245.4 720.36 928.42 452.25 280.58 240.76 200.36 204.61 229.97 214.2 137.37 342.25 1930 110.69 172.29 317.61 259.95 567.56 343.25 202.25 166.38 168.32 183.56 171.68 144.89 234.04 1931 126.15 134.92 165.33 204.3 178.51 355.11 216.02 112.92 98 119.4 186.89 171.28 172.4 1932 138.39 134.53 237.27 542.84 420.37 250.1 141.4 109.43 100.55 99.84 131.03 102.99 200.73 1933 100.05 104.54 191.48 387.75 364.25 326.83 118.13 84.82 94.72 106.98 110.16 95.68 173.78 1934 98.74 99.66 123.73 306.59 180.44 118.52 90.53 66.99 87.68 137.48 136.45 112.35 129.93 1935 89.28 109.23 409.38 406.16 396.33 274.5 258.11 202.83 185.79 141.54 169.19 141.58 231.99 1936 124.17 104.27 415.71 1086.24 758.16 218.7 109.89 77.19 106.09 112.07 114.43 106.27 277.77 1937 108.04 103.15 186.45 593.97 672.3 493.28 229.27 177.64 171.03 156.2 142.82 109.5 261.97 1938 107.07 115.62 399.8 497.06 1304.32 753.04 405.74 233.57 436.65 270.89 279.44 224.71 418.99 1939 227.45 193.16 504.5 1121.73 537.38 439.95 284.45 197.7 184.4 166.43 159.8 130.4 345.61 1940 105.27 121.36 142.8 609 506.05 319.33 132.3 147.26 133.66 202.1 225.99 200.96 237.17 1941 196.67 174.35 297.97 1456.15 629.92 785.89 360.92 200.46 710.28 570.09 451.47 287.72 510.16 1942 216.33 229.18 349.61 489.03 899.38 860.65 436.54 371.96 621.75 461.93 343.49 246.53 460.53 1943 265.04 245.51 377.04 1433.31 751.22 1751.12 900.21 534.1 405.19 297.47 329.76 313.84 633.65 1944 253.79 278.94 369.6 794.48 1753.19 1974.26 1129.39 567.34 397.38 345.47 356.32 265.74 707.16 1945 264.17 284.83 1152.32 1253.31 701.71 1057.36 547.98 448.96 449.96 405.48 305.31 260.06 594.29 1946 222.24 231.95 989.82 992.89 497.28 944.09 885.77 258.82 293.7 527.52 558.13 367.9 564.18 1947 304.53 261.66 338.45 1319.48 1315.46 853.38 637.41 248.31 238.67 217.47 244.86 234.04 517.81 1948 199.1 200.17 628.66 1487.87 807.77 263.39 219.97 246.07 166.01 175.31 192.65 166.08 396.09 1949 157.91 168.59 451.62 1073.69 499.47 272.15 316.4 269.45 195.44 310.6 242.42 196.44 346.18 1950 175.11 188.05 321.1 1513.35 1932.41 756.72 362.55 272.99 255.96 265.11 192.49 224.44 538.36 1951 223.51 224.87 302.7 2000.7 1234.44 728.22 972 454.44 906.43 636.77 701.79 518.38 742.02 1952 387.76 363.14 440.1 2834.81 1112.13 571.63 1386.62 850.15 500.64 271.43 264.65 241.25 768.69 1953 234.04 252.86 591.82 1080.2 1132.31 1405.56 1110.21 1241.38 489.41 323.27 345.41 306.65 709.43 1954 283.56 307.46 470.79 846.58 1353.37 990.06 798.17 306.75 345.41 389.5 315.16 245.54 554.36 1955 218.79 211.37 355.66 888.68 365.07 344.91 490.1 535.1 325.99 272.54 255.34 242.06 375.47 1956 204.76 191.64 224.41 1215.84 559.4 534.44 331.69 497.32 223.62 190.28 288.92 210.13 389.37 1957 169.26 156.7 337.11 743.42 556.02 978.92 1365.43 619.05 654.03 450.61 461.47 310.74 566.9 1958 243.53 223.95 355.06 602.49 353.75 355.77 440.02 190.72 282.86 184.45 220.79 145.02 299.87 1959 126.92 121.62 175.46 225.45 437.86 513.75 292.08 179.05 274.01 287.08 231.74 215.22 256.69 1960 230.15 175.38 197.46 1133.62 1009.64 697.73 322.02 188.78 299.3 208.82 207.76 168.18 403.24 1961 137.47 135.14 310.96 572.29 756.16 343 187.13 174.11 160.01 172.24 231.85 175.17 279.63 1962 149.45 151.16 235.7 1434.73 1101.35 1049.81 776.07 532.72 461.85 362.27 302.43 216.33 564.49 1963 181.91 169.83 327.12 604.28 602.7 826.57 374.57 400.59 252.38 223.52 189.66 158.21 359.28 1964 145.97 147.93 193.02 675.03 1112.95 343.77 249.98 192.58 488.23 316.47 242.35 177.03 357.11 1965 175.02 165.65 212.38 3330.62 1764.61 1498.06 639.32 343.53 421.76 946.88 552.75 534.55 882.09 1966 391.51 605.58 1272.99 1517.89 1119.25 633.17 415.09 424.02 301.8 310.55 273.4 219.05 623.69 1967 232.56 231.09 445.58 1658.34 673.31 1014.5 593.5 221.95 187.93 176.57 169.43 153.64 479.87 1968 139.03 146.96 273.67 493.51 581.59 843.75 774.88 507.65 439.13 1247.32 810.24 376.34 552.84 1969 326.56 329.49 510.35 3210.77 1474.31 564.83 533.46 242.53 174.61 231.66 246.56 226.38 672.63 1970 229.36 222.36 270.6 914.17 942.77 643.55 283.11 149.01 133.17 292.94 652.05 415.53 429.05 1971 271.84 252.02 640.15 1698.08 854.53 752.57 546.97 215.18 211.17 380.42 1142.78 532.91 624.89 1972 344.28 295.67 786.94 1464.08 1325.78 930.31 939.94 1160.91 623.54 484.4 712.74 319.13 782.31 1973 329.3 298.57 1284.5 964.85 924.87 657.14 249.43 334.73 276.43 792.69 607.78 405.02 593.78 1974 269.25 259.51 483.4 1096.53 1057.32 1189.13 362.82 312.16 177.87 184.36 330.73 228.17 495.94 1975 226.38 246.12 281.57 1298.71 1846.72 1025.17 1076.32 333.87 310.15 285.29 355.85 320.59 633.9 1976 256.73 282.81 600.05 1219.52 312.27 194.91 150.73 102.97 85 102.95 109.71 102.94 293.38 1977 101.11 114.22 349.13 362.51 231.51 296.06 232.36 151.53 448.73 568.62 485.64 474.17 317.97 1978 299.89 220.83 362.27 1443.41 727.66 746.62 1017.22 487.33 609.19 367.85 277.7 232.66 566.05 1979 209.55 214.69 386.19 2083.38 1735.19 930.31 846.59 693.4 658.28 308.48 662.24 375.52 758.65 1980 291.03 262.18 393.51 876.32 336.92 560.19 227.71 213.83 377.16 274.01 259.29 184.04 354.68 1981 159.21 169.69 259.77 537.36 565.97 689.05 615.58 482.12 409.44 561.01 448.54 294.11 432.65 1982 243.34 238.99 498.58 1912.25 1336.2 726.71 503.95 257.35 317.81 724.09 698.01 607.63 672.08 1983 454.72 408.98 1557.8 1667.87 1002.06 742.19 1153.96 435.17 400.97 498.84 522.64 514.91 780.01 1984 400.55 537.83 806.21 1699.4 1458.23 1799.55 1081.62 375.21 277.46 722.97 733.6 476.55 864.1 1985 351.04 273.43 978.67 1306.64 1280.48 849.79 748.03 520.94 823.27 1081.34 600.32 479.38 774.44 1986 416.9 360.94 749.85 2543.72 2551.45 1125.98 988.08 865.68 1301.26 1408.45 722.27 550.26 1132.07 1987 414.98 364.78 512.26 601.36 391.27 431.72 294.97 286.11 207.82 215.68 234.45 230.48 348.82 1988 180.51 179.33 381.68 605.89 382.69 154.86 94.08 141.13 167.33 201.8 207.46 185.52 240.19 1989 176.41 187.01 265.68 1037.72 707.83 386.59 229.71 135.98 238.31 187.16 192.22 149.13 324.48 1990 144.22 142.8 450.63 367.87 623.25 926.34 576.02 469.19 294.83 312.52 289.47 183.71 398.4 1991 168.56 170.38 407.86 1010.07 1391.64 1421.32 1037.59 613.11 759.84 438 643.93 566.61 719.08 1992 433.16 356.4 1349.53 1084.45 724.73 513.11 892.44 407.31 409.56 416.65 521.32 360.91 622.46 1993 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 225.27 223.01 474.68 1119.11 877.15 712.87 537.93 350.66 350.22 367.43 359.08 269.85 488.94 Std Dev 93.15 96.95 310.31 669.68 489.36 408.03 348.03 236.49 225.04 264.7 212.67 134.44 206.63