Results
Country: | U.S.A.
| Station: | PLAINS, MT. | River: | CLARK FORK | Area: | 44053840.43 | Lat: | 47.42 | Lon: | -114.85 | Source: | USGS | PointID: | 12389000 | Area Units: | km2 | Discharge Units: | m3/sec | Starting Year: | 1910 | Ending Year: | 1996 | Total Years: | 87 | Total Usable Years: | 86 | |
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Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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1910 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | 283.17 | 349.98 | 298.64 | -9999 |
1911 | 226.7 | 182.43 | 228.6 | 481.39 | 1248.78 | 1812.29 | 1013.75 | 406.76 | 270.86 | 269.5 | 220.09 | 182.64 | 545.32 |
1912 | 155.74 | 169.92 | 165.8 | 439.33 | 1395.66 | 1846.27 | 917.29 | 370.33 | 284.98 | 250.3 | 255.85 | 212.38 | 538.65 |
1913 | 208.48 | 224.92 | 198.96 | 532.77 | 1527.2 | 2779.31 | 1212.52 | 480.75 | 285.28 | 247.35 | 256.7 | 227.71 | 681.83 |
1914 | 209.84 | 208.36 | 243.21 | 477.6 | 1384.61 | 1391.87 | 674.13 | 300.12 | 240.13 | 278.22 | 401.63 | 269.26 | 506.58 |
1915 | 225.71 | 208.22 | 203.18 | 438.06 | 882.3 | 1001.48 | 751.31 | 407.22 | 281.91 | 265.07 | 242.38 | 245.09 | 429.33 |
1916 | 184.16 | 181.23 | 430.6 | 826.86 | 1474.77 | 2285.94 | 2178.31 | 703.45 | 434.29 | 339.8 | 254.85 | 203.88 | 791.51 |
1917 | 175.57 | 189.72 | 175.57 | 390.77 | 1555.52 | 2601.39 | 1567.03 | 500.48 | 280.54 | 231.91 | 209.16 | 327.97 | 683.8 |
1918 | 604.25 | 367.41 | 355.97 | 739.07 | 1601.92 | 2076.58 | 924.14 | 444.94 | 291.9 | 245.18 | 225.61 | 194.61 | 672.63 |
1919 | 175 | 178.86 | 188.22 | 429.19 | 1205.76 | 1323.63 | 520.67 | 259.7 | 170.37 | 144.42 | 147.31 | 117.52 | 405.05 |
1920 | 142.43 | 157.16 | 177.89 | 303.53 | 1221.19 | 1748.2 | 1067.19 | 397.63 | 271.6 | 315.98 | 276.31 | 244.87 | 527 |
1921 | 237.55 | 240.89 | 334.58 | 586.63 | 1716.83 | 2287.54 | 892.72 | 346.65 | 226.6 | 192.89 | 192.4 | 230.42 | 623.81 |
1922 | 197.67 | 159.75 | 176.12 | 299.27 | 1322.13 | 2459.8 | 796.8 | 350.56 | 246.53 | 197.43 | 185.79 | 166.14 | 546.5 |
1923 | 192.32 | 172.02 | 190.2 | 414.09 | 1412.2 | 2075.54 | 984.79 | 390.87 | 233.8 | 206.39 | 196.18 | 180.23 | 554.05 |
1924 | 164.42 | 191.41 | 184.84 | 306.79 | 1583.38 | 1318.53 | 603.97 | 295.18 | 188.12 | 180.95 | 191.13 | 198.22 | 450.58 |
1925 | 238.43 | 356.79 | 297.33 | 1058.02 | 2144.6 | 1964.82 | 924.14 | 388.13 | 309.07 | 238.53 | 205.3 | 198.22 | 693.61 |
1926 | 180.05 | 193.18 | 219.43 | 545.61 | 1123.45 | 644.78 | 343.94 | 184.06 | 206.71 | 313.71 | 345.66 | 405.94 | 392.21 |
1927 | 271.35 | 238.32 | 259.69 | 392 | 1564.1 | 2855.2 | 1495.5 | 516.74 | 403.61 | 427.68 | 599.47 | 508.06 | 794.31 |
1928 | 382.28 | 317.54 | 397.45 | 587.29 | 2541.86 | 2094.42 | 1257.27 | 534.37 | 309.69 | 261.78 | 242.5 | 208.98 | 761.29 |
1929 | 155.2 | 140.78 | 183.64 | 238.56 | 982.23 | 1623.7 | 686.82 | 261.91 | 166.35 | 150.92 | 136.57 | 146.22 | 406.08 |
1930 | 122.8 | 170.89 | 163.73 | 644.21 | 1171.87 | 1106.06 | 512.26 | 239.59 | 179.3 | 196.28 | 193.43 | 167.61 | 405.67 |
1931 | 147.1 | 143.34 | 157.12 | 260.43 | 994.57 | 918.6 | 375.25 | 174.09 | 135.02 | 134.79 | 134.91 | 139.65 | 309.57 |
1932 | 128.55 | 149.7 | 235.05 | 551.05 | 1680.2 | 1813.42 | 883.4 | 333.58 | 211.92 | 170.51 | 226.63 | 245.31 | 552.44 |
1933 | 209.23 | 171.42 | 181.91 | 320.88 | 1207.4 | 2825.09 | 1280.2 | 421.28 | 263.82 | 287.83 | 584.27 | 606.81 | 696.68 |
1934 | 632.02 | 464.1 | 505.6 | 1354.5 | 1969.13 | 1313.91 | 507.42 | 255.72 | 161.93 | 170.77 | 264.39 | 245.35 | 653.74 |
1935 | 216.2 | 228.03 | 223.42 | 324.54 | 1164.19 | 1750.93 | 836.08 | 325.66 | 184.99 | 151.25 | 137.97 | 119.61 | 471.91 |
1936 | 115.61 | 119.8 | 196.04 | 567.41 | 1792.37 | 1408.02 | 467.77 | 218.32 | 162.38 | 141.87 | 129.91 | 115.39 | 452.91 |
1937 | 94.7 | 111.58 | 131.28 | 173.06 | 923.96 | 1258.12 | 621.7 | 257.45 | 152.35 | 141.97 | 147.76 | 164.96 | 348.24 |
1938 | 163.35 | 151.6 | 178.09 | 475.05 | 1360.77 | 1863.54 | 638.69 | 187.06 | 273.6 | 223.81 | 172 | 172.36 | 488.33 |
1939 | 218.5 | 226.09 | 233.91 | 542.36 | 1664.4 | 1092.66 | 414.16 | 198.25 | 207.43 | 205.49 | 177.76 | 169.89 | 445.91 |
1940 | 170.87 | 177.41 | 200.28 | 459.49 | 1021.97 | 705 | 222.09 | 165.5 | 167.03 | 202.1 | 188.44 | 170.86 | 320.92 |
1941 | 221.3 | 217.51 | 197.13 | 265.53 | 368.49 | 548.69 | 250.32 | 174.42 | 204.31 | 240.48 | 299.97 | 452.52 | 286.72 |
1942 | 493.99 | 253.84 | 220.76 | 485.64 | 1061.89 | 1301.73 | 653.76 | 282.99 | 216.79 | 206.33 | 230.4 | 274.58 | 473.56 |
1943 | 349.03 | 375.1 | 290.39 | 1119.47 | 1479.33 | 2199.1 | 1159.54 | 335.15 | 300.16 | 302.35 | 264.94 | 220.68 | 699.6 |
1944 | 200.14 | 178.95 | 199.58 | 226.93 | 545.17 | 815.25 | 333.16 | 202.89 | 190.54 | 203.67 | 207.75 | 202.68 | 292.23 |
1945 | 240.31 | 241.15 | 244.63 | 237.9 | 902.03 | 1460.4 | 532.83 | 187.81 | 186.69 | 207.88 | 223.72 | 282.91 | 412.36 |
1946 | 317.7 | 338.69 | 329.12 | 609.76 | 1542.73 | 1423.59 | 559.84 | 256.28 | 229.58 | 274.54 | 304.79 | 492.72 | 556.61 |
1947 | 390.04 | 427.59 | 426.49 | 702.73 | 2263.44 | 1716.29 | 615.67 | 282.29 | 256.3 | 471.37 | 419.37 | 357.98 | 694.13 |
1948 | 410.23 | 366.75 | 283.78 | 553.31 | 2045.4 | 2878.23 | 599.86 | 379.01 | 238.59 | 220.74 | 227.57 | 247.55 | 704.25 |
1949 | 386.76 | 257.99 | 262.87 | 558.51 | 1904.64 | 1260.77 | 401.28 | 222.12 | 177.53 | 263.78 | 302.26 | 345.51 | 528.67 |
1950 | 338.07 | 371.05 | 346.29 | 491.39 | 1244.4 | 2599.5 | 1452.48 | 453.93 | 250.67 | 360 | 434.48 | 470.88 | 734.43 |
1951 | 542.32 | 538.23 | 421.28 | 710.57 | 2091.35 | 1730.17 | 1021.7 | 349.88 | 310.94 | 419.59 | 393.89 | 327.34 | 738.11 |
1952 | 357.8 | 436.47 | 286.64 | 674.2 | 1734.28 | 1036.5 | 506.6 | 223.09 | 226.2 | 268.82 | 281.26 | 280.27 | 526.01 |
1953 | 304.29 | 281.48 | 278.43 | 309.31 | 767.66 | 1837.02 | 729.39 | 248.52 | 287.67 | 302.76 | 308.32 | 315.51 | 497.53 |
1954 | 247.94 | 375.24 | 375.76 | 509.37 | 1582.65 | 1631.81 | 1237.09 | 375.43 | 288.99 | 312.14 | 375.58 | 455.08 | 647.26 |
1955 | 451.83 | 461.77 | 347.39 | 358.02 | 769.49 | 1429.73 | 1031.29 | 305.54 | 327.59 | 346 | 371.56 | 487.78 | 557.33 |
1956 | 450.51 | 465.57 | 547.98 | 1058.68 | 1878.79 | 1897.05 | 707.47 | 267.63 | 333.46 | 370.41 | 428.56 | 503.13 | 742.44 |
1957 | 457.55 | 392.09 | 390.32 | 352.55 | 1502.72 | 1285.97 | 425.08 | 212.27 | 260.48 | 365.08 | 470.35 | 434.72 | 545.77 |
1958 | 291.42 | 256.1 | 327.06 | 367.65 | 1423.43 | 1203.94 | 517.65 | 178.64 | 239.86 | 260.62 | 326.1 | 551.67 | 495.35 |
1959 | 601.05 | 586.06 | 452.16 | 943.99 | 1442.52 | 2261.49 | 942.04 | 299.08 | 380.54 | 666.82 | 567.85 | 511.53 | 804.59 |
1960 | 414.98 | 433.23 | 586.89 | 994.02 | 1088.19 | 1423.78 | 636.86 | 266.11 | 224.01 | 230.63 | 247.2 | 291.58 | 569.79 |
1961 | 289.59 | 355.01 | 483.95 | 667.53 | 1404.16 | 1820.59 | 434.08 | 192.66 | 225.93 | 307.81 | 259.06 | 382.22 | 568.55 |
1962 | 462.97 | 621.76 | 286.48 | 706.95 | 1430.47 | 1316.93 | 582.14 | 241.53 | 191.35 | 267.25 | 320.94 | 469.79 | 574.88 |
1963 | 479.01 | 543.48 | 441.56 | 579.46 | 811.69 | 1206.21 | 657.63 | 212.03 | 192.52 | 252.83 | 225.49 | 322.83 | 493.73 |
1964 | 375.71 | 442.33 | 453.99 | 374.26 | 1002.6 | 2572.79 | 947.61 | 299.01 | 304.39 | 301.24 | 376.43 | 461.75 | 659.34 |
1965 | 468.87 | 615.79 | 725.28 | 898.31 | 1580.64 | 1966.14 | 825.39 | 380.73 | 403.12 | 385.92 | 366.62 | 451.7 | 755.71 |
1966 | 443.02 | 489.99 | 396.89 | 530 | 887.69 | 1210.55 | 570.5 | 207.24 | 332.96 | 448.69 | 421.17 | 330.56 | 522.44 |
1967 | 381.6 | 433.86 | 445.67 | 421.83 | 1137.98 | 2197.68 | 724.46 | 255.1 | 277.91 | 352.29 | 370.25 | 484.59 | 623.6 |
1968 | 500.21 | 364.26 | 439.74 | 428.81 | 763.65 | 1426.33 | 576.31 | 289.17 | 441.75 | 455.26 | 466.95 | 451.11 | 550.3 |
1969 | 511.08 | 539.24 | 537.47 | 1034.14 | 1565.38 | 1066.42 | 692.49 | 377.07 | 401.7 | 410.79 | 329.99 | 364.19 | 652.5 |
1970 | 315 | 274.07 | 313.94 | 394.74 | 1207.58 | 1739.04 | 621.15 | 339.74 | 385.96 | 412.51 | 300.61 | 415.84 | 560.02 |
1971 | 466.32 | 619.54 | 429.69 | 681.87 | 1864.81 | 1870.81 | 810.78 | 338.78 | 308 | 357.84 | 390.3 | 449.42 | 715.68 |
1972 | 465.95 | 441.06 | 728.39 | 877.83 | 1637.82 | 2359.66 | 824.57 | 341.43 | 294.76 | 355.61 | 381.05 | 418.27 | 760.53 |
1973 | 418.63 | 426.68 | 367.02 | 311.3 | 529.8 | 632.79 | 395.31 | 234.65 | 162.94 | 260.83 | 330.58 | 342.19 | 367.73 |
1974 | 560.4 | 541.56 | 621.15 | 951.83 | 1441.06 | 2451.5 | 1128.2 | 391.51 | 291.18 | 319.31 | 405.5 | 402.83 | 792.17 |
1975 | 430.6 | 347.82 | 298.93 | 300.07 | 903.95 | 2251.67 | 1137.34 | 435.4 | 369.54 | 459.1 | 477.8 | 585.43 | 666.47 |
1976 | 487.33 | 514.88 | 478.28 | 843.09 | 1914.05 | 1419.63 | 868.42 | 428.23 | 312.76 | 314.13 | 377.37 | 385.49 | 695.31 |
1977 | 415.35 | 309.91 | 254.21 | 246.49 | 435.35 | 383.86 | 268.04 | 258.96 | 236 | 357.9 | 396.06 | 372.51 | 327.89 |
1978 | 405.66 | 385.72 | 364.48 | 657.24 | 1030.74 | 1462.57 | 886.87 | 318.39 | 347.45 | 385.84 | 452.79 | 452.07 | 595.82 |
1979 | 451.52 | 345.07 | 287.43 | 407.67 | 1317.11 | 1177.99 | 515.28 | 310.51 | 280.38 | 316.55 | 414.37 | 390.55 | 517.87 |
1980 | 309.41 | 261.48 | 171.53 | 397.64 | 1283.22 | 1434.16 | 589.45 | 258.4 | 337.75 | 387.59 | 389.17 | 486.6 | 525.53 |
1981 | 483.86 | 505.26 | 422.11 | 492.24 | 1360.95 | 1806.53 | 758.71 | 255.68 | 265.37 | 407.4 | 375.67 | 326.18 | 621.66 |
1982 | 395.8 | 436.28 | 405.85 | 551.43 | 1356.66 | 1844.29 | 1088.47 | 324 | 265.33 | 291.74 | 304.15 | 310.12 | 631.18 |
1983 | 434.53 | 434.67 | 379.54 | 461.94 | 843.85 | 994.49 | 812.7 | 325.09 | 372.36 | 411.97 | 418.05 | 367.66 | 521.4 |
1984 | 474.17 | 398.98 | 375.79 | 445.9 | 679.79 | 1270.87 | 569.45 | 288.11 | 352.99 | 397.74 | 375.29 | 397.35 | 502.2 |
1985 | 402.19 | 373.48 | 302.35 | 479.07 | 1000.32 | 997.99 | 379.75 | 376.25 | 479.22 | 453.8 | 459.49 | 411.62 | 509.63 |
1986 | 435.44 | 507.08 | 623.61 | 734.35 | 866.04 | 1187.99 | 392.21 | 215.56 | 360.51 | 382.04 | 397.48 | 371.41 | 539.48 |
1987 | 364.38 | 313.24 | 266.42 | 441.34 | 772.14 | 435.76 | 275.11 | 277.88 | 376.62 | 364.92 | 327.95 | 333.03 | 379.07 |
1988 | 225.39 | 325.83 | 441.38 | 552.56 | 628.36 | 600.51 | 275.62 | 160.17 | 178.13 | 281.99 | 356.32 | 333.44 | 363.31 |
1989 | 238.33 | 287.95 | 356.25 | 615.8 | 1012.38 | 1033.95 | 515.1 | 417.81 | 457.23 | 352.67 | 430.14 | 491.35 | 517.41 |
1990 | 468.78 | 364 | 382.55 | 849.23 | 976.39 | 1591.04 | 721.17 | 297.47 | 316.28 | 413.43 | 453.26 | 430.24 | 605.32 |
1991 | 473.17 | 549.35 | 482.3 | 610.89 | 1268.42 | 1565.36 | 892.26 | 293.11 | 346.32 | 414.43 | 430.23 | 418.36 | 645.35 |
1992 | 357.98 | 268.52 | 283.95 | 403.42 | 564.88 | 517.35 | 339.68 | 275.76 | 328.73 | 409.41 | 344.81 | 296.67 | 365.93 |
1993 | 456.45 | 291.37 | 315.76 | 352.83 | 907.33 | 806.09 | 689.84 | 333.22 | 348.96 | 348.03 | 417.02 | 467.41 | 477.86 |
1994 | 469.97 | 358.72 | 296.83 | 454.29 | 700.07 | 602.49 | 265.49 | 166.81 | 157.2 | 253.54 | 381.24 | 258.82 | 363.79 |
1995 | 287.22 | 424.85 | 377.8 | 351.41 | 542.32 | 1303.15 | 668.1 | 293.39 | 260.67 | 332.98 | 503.29 | 782.46 | 510.64 |
1996 | 589.91 | 851.46 | 888.79 | 1170.25 | 1466 | 1882.33 | 766.57 | 468.14 | 314.24 | -9999 | -9999 | -9999 | -9999 |
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Avg | 339.64 | 337.35 | 336.74 | 550.78 | 1274.11 | 1565.06 | 736.64 | 310.45 | 274.55 | 302.18 | 320.99 | 337.3 | 554.56 |
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Std Dev | 136.28 |
145.08 |
143.79 |
241.55 |
442.01 |
602.9 |
336.91 |
98.26 |
78.03 |
95.81 |
109.05 |
130.64 |
131.79 |
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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