Country= U.S.A. Station= TARKIO, MT River= CLARK FORK Area= 44053817.12 Lat= 47.02 Lon= -114.73 Source= USGS PointID= 12353500 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 424.12 405.64 1154.6 1800.77 850.06 575.68 502.49 379.27 346.41 379.54 373.03 287.9 623.29 1930 276.68 342.05 651.02 469.97 841.84 855.55 440.47 299.56 279.45 321.44 304.31 268.48 445.9 1931 241.83 276.64 297.05 362.74 337.79 471.29 505.5 233.66 220.71 266.08 366.37 417.08 333.06 1932 352.96 376.62 561.32 1112.86 748.03 469.5 319.25 240.33 219.36 202.06 240.32 205.75 420.7 1933 252.59 314.12 530.53 849.79 672.12 577.95 272.39 189.64 192.27 191.82 208.62 178 369.15 1934 220.49 228.55 255.49 879.83 352.52 239.27 200.01 152.67 212.71 433.71 397.1 345.63 326.5 1935 279.68 303.92 775.89 972.03 709.39 532.27 720.07 523.68 389.74 319.07 430.23 320.62 523.05 1936 293.49 252.51 962.69 1951.14 1394.84 452.03 223.37 181.5 244.3 220.96 253.72 219.71 554.19 1937 240.57 236.2 516.83 967.21 1124.37 745.02 326.13 302.28 256.83 274.55 290.31 244.32 460.39 1938 231.03 285.31 780.61 972.78 1979.45 1576.12 822.38 503.86 1134.1 506.51 790.34 460.46 836.91 1939 475.91 410.6 955.11 1879.97 920.58 1037.63 561.41 373.24 361.87 325.93 313.98 266.55 656.9 1940 190.91 236.3 315.6 1133.06 811.51 795.24 311.4 306.37 273.17 312.88 427.96 368.21 456.88 1941 383.92 340.41 562.41 1911.21 963.33 1002.33 485.59 298.94 1437.47 1024.62 942.58 525.69 823.21 1942 416.26 423.64 713.59 981 1297.38 1848.34 816.99 603.61 1266.24 856 617.59 405.48 853.84 1943 480.93 410.7 690.39 2183.71 1113.77 2717.77 1701.21 813.25 605.42 495.73 557.28 512.63 1023.57 1944 449.42 470.55 635.21 1134 2350.86 2548.25 1534.05 702.63 532.17 465.86 497.81 416.35 978.1 1945 402.74 403.72 1748.16 1942.64 1228.04 1739.51 1001.87 731.13 656.67 546.24 514.33 488.51 950.3 1946 459.83 467.43 1626.67 1399.61 631.65 1182.61 1361.77 402.28 508.81 773.42 919.64 530.08 855.32 1947 485.5 436.99 586.07 1799.45 1844.35 1224.52 860.84 419.82 406.16 354.69 407.86 382.19 767.37 1948 331.43 323.87 959.58 1869.21 1098.79 368.97 316.37 360.54 268.58 223.38 289.14 256.62 555.54 1949 248.9 252.24 803.23 1479.19 737.98 372.09 575.77 404.2 300.73 406.93 382.67 337.04 525.08 1950 326.83 348.2 799.36 2147.56 2554.1 1188.84 550.08 375.77 332.66 375.89 319.02 361.18 806.62 1951 357.25 375.71 577.39 2872.76 1888.65 1143.82 1665.59 754.79 1314.38 1052.57 1044.43 892.35 1161.64 1952 649.74 575.42 713.68 3783.62 1704.04 859.42 1528.84 1307.88 660.64 411.42 430.7 411.88 1086.44 1953 396.89 413.93 971.27 1607.18 1439.51 1709.21 1624.66 1604.39 640.53 450.42 489.13 490.52 986.47 1954 439.1 499.8 737.79 1208.66 2409.32 1570.18 1324.5 531.81 681.12 843.02 604.38 482.67 944.36 1955 413.61 406.85 762.55 1423.78 572.55 708.87 682.62 738.07 417.2 417.63 432.87 416.17 616.06 1956 352.5 346.44 464.58 1890.25 858.1 854.89 625.17 766.29 363.6 308.74 439.57 351.4 635.13 1957 303.89 295.24 588.81 982.6 761.45 1003.55 1826.08 865.95 837.81 543.78 624.01 479.01 759.35 1958 377.26 399.37 552.73 948.43 524.69 614.48 743.28 299.9 430.21 318.51 383.07 282.33 489.52 1959 258.81 249.93 424.13 474.22 702.99 669.51 580.13 394.55 734.83 688.93 489.7 433.62 508.45 1960 478.28 340.19 421.65 1572.63 1674.17 1183.27 535.74 364.61 684.33 396.89 487.34 380.45 709.96 1961 275.58 261.16 746.75 1100.02 1254.35 619.2 342.97 269.19 280.08 290.63 426.36 326.19 516.04 1962 297.07 284.08 539.3 1959.44 1523 1555.17 984.88 752.96 904.16 605.98 498 388.38 857.7 1963 334.32 315.03 685.55 1029.98 1030.1 1007.14 429.25 502.49 347.25 341.71 301.5 295.5 551.65 1964 291.85 297.13 405.21 918.51 1452.75 505.55 370.56 257.1 724.07 423.66 392 318.25 529.72 1965 315.41 330.9 577.85 4320.04 2669.11 1941.32 858.83 477.29 581.35 1157.89 687.25 911.81 1235.75 1966 652.39 1016.28 1797.03 2025.89 1459.51 841.49 535.47 569.17 437.03 515.37 456.19 379.17 890.42 1967 406.12 453.48 873.26 2786.49 1051.38 1410.94 1012.84 392.14 331.31 300.53 343.49 296.69 804.89 1968 277.14 286.49 467.78 729.73 1087.56 1474.94 1564.29 742 737.37 1698.65 1319.19 660.33 920.46 1969 633.02 713.99 960.86 3873.01 2084.86 854.98 869.51 423.29 303.1 404.02 459.11 396.89 998.05 1970 393.79 404.73 525.6 1225.28 1453.21 1109.93 464.58 304.17 298.76 565.09 1183.74 719.25 720.68 1971 481.3 474.92 988.45 2478.4 1287.42 1171.95 792.78 420.46 376.02 595.48 1417.08 808.5 941.06 1972 535.83 485.1 1069.65 2045.43 1694.27 1151.65 996.67 1653.9 982.32 985.52 1193 559.22 1112.71 1973 660.79 572.21 2178.03 1607.37 1762.69 1182.61 483.49 618.04 545.29 1085.82 867.63 703.45 1022.29 1974 509.71 498.08 896.83 1657.3 1481.71 1677.59 639.42 570.45 446.46 413.79 636.57 431.51 821.62 1975 411.05 457.72 587.44 1678.16 2700.89 1433.12 1414.39 641.06 644.4 485.23 753.99 656.86 988.69 1976 489.79 615.94 1022.06 2114.52 636.4 405.59 315.56 249.23 224.3 222.82 214.83 199.01 559.17 1977 201.26 222.98 606.85 722.84 411.6 446.75 417.63 280.74 882.92 1009.91 747.47 767.66 559.88 1978 555.84 428.9 580.32 1903.75 1063.53 1141.84 1665.59 841.65 1129.94 649.74 505.93 436.26 908.61 1979 379.81 394.42 808.68 2804.99 2450.61 1378.47 1266.32 961.86 953.72 584.24 939.94 654.67 1131.48 1980 535.01 463.91 888.88 1460.21 574.29 992.61 401.74 536.01 1026.87 649.92 582.76 377 707.43 1981 327.66 430.24 571.09 1031.21 1105.19 1005.44 1021.33 761.82 641.66 855.08 739.83 519.21 750.81 1982 472.25 457.42 819.09 2815.18 2042.11 1112.86 710.21 437.91 719.06 1274.81 1399.43 1091.3 1112.64 1983 863.21 732.4 2447.23 2373.44 1768.9 1028.57 1535.51 676.05 841.49 959.31 993.17 875.63 1257.91 1984 731.58 1016.68 1224.76 2251.77 2198.04 2077.71 1632.06 630.01 539.34 1007.9 1223.86 766.29 1275 1985 622.97 566.95 1593.15 2147.47 1937.7 1204.7 1041.06 735.33 1265.58 1929.03 1023.38 795.16 1238.54 1986 711.67 611.34 1075.41 3486.11 3156.43 1553.85 1579.72 1381.41 1967.84 2433.98 1131.26 889.61 1664.89 1987 658.23 627.52 790.96 835.54 587.26 615.71 582.78 541.04 410.31 443.94 529.81 563.42 598.88 1988 389.59 371.83 767.85 1032.63 637.32 268.45 205.07 281.96 322.79 362.93 453.83 370.86 455.43 1989 339.71 378.34 737.79 1571.12 1028.73 751.91 427.48 308.14 407.39 322.81 354.91 282.53 575.91 1990 288.1 280.24 1048 663.75 1172.6 1463.52 1008.54 893.9 719.35 672.39 546.33 357.07 759.48 1991 334.14 341.32 812.42 1712.71 2009.78 2000.41 1482.99 930.9 1098.7 692.85 1396.88 1145.1 1163.18 1992 771.23 670.53 1909.84 1783.4 1268.51 752.1 1257.46 617.31 792.31 793.61 929.18 645.63 1015.93 1993 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 416.26 420.49 845.31 1673.59 1330.31 1077.75 841.52 563.84 610.83 616.31 623.71 484.49 792.03 Std Dev 150.61 160.72 434.23 830 652.11 530.63 470.76 316.85 356.65 414.34 325.71 219.27 276