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= 1950 Ending Year= 1992 Total Years= 43 Total Usable Years= 40 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1950 350.31 494.94 1276.37 3384.35 2278.15 1636.25 1981.82 1384.79 1050.18 1212.42 1004.22 411.24 1372.09 1951 614.94 619.54 1382.23 2835.1 2125.33 2862.38 2106.33 1983.01 2036.65 1680.57 1465.97 593.01 1692.09 1952 639.69 1351.7 1484.27 5817.26 2372.51 2126.42 1545.1 1211.97 1075.86 1029.92 973.26 471.34 1674.94 1953 528.34 772.14 1417.4 1211.02 1495.14 2221.94 1383.24 1020.6 1014.69 978.76 702.54 550.26 1108.01 1954 348.39 688.31 906.33 972.41 1048.19 1515.05 1021.15 1129.67 1002.04 1064.17 555.96 474.81 893.87 1955 352.04 443.36 867.51 945.03 964.42 1065.76 983.97 844.39 1002.42 993.29 527.31 281.83 772.61 1956 360.45 399.86 831.61 971.56 956.75 954.57 981.6 1043.34 1004.69 870.06 494.98 324.5 766.16 1957 305.79 374.49 435.62 617.97 1040.24 1384.98 1108.2 990.73 981.56 1030.65 601.64 432.52 775.37 1958 370.63 499.49 695.87 1023.66 963.97 986.28 1384.7 1158.35 1082.56 967.89 546.99 361.28 836.81 1959 357.07 498.58 718.89 993.17 1415.3 1205.17 1051.57 1115.78 1023.57 1004.52 591.64 450.88 868.84 1960 408.89 485.2 644.07 2598.46 1446.27 1312.4 1058.05 1116.6 1036.69 952.27 824.59 413.06 1024.71 1961 393.28 536.81 1018.59 1028.57 1017.77 1090.2 981.23 964.7 1039.8 724.37 481.39 383.49 805.02 1962 385.2 605.17 1300.94 1854.29 1234.07 1703.55 1485.45 978.67 1076.61 971.64 926.44 411.05 1077.76 1963 366.13 421.22 914.09 977.5 994.66 1179.03 958.76 975.93 968.54 954.65 927.57 320.8 829.91 1964 351.86 411.38 548.89 1036.31 1135.05 1472.11 1071.48 1051.47 1001.19 975.2 943.62 401.83 866.7 1965 401.55 483.01 1066.18 1637.86 1309.62 1387.16 1329.71 1038.78 1387.82 1302.76 1108.04 748.94 1100.12 1966 632.47 994.33 916.65 1101.34 1048.37 1167.13 1075.59 1154.05 1030.74 1046.27 1033.19 514 976.18 1967 397.9 455.3 728.84 1052.17 1056.77 2563.92 1275.64 1117.88 1085.11 1121.17 1057.64 610.64 1043.58 1968 448.05 725.01 842.93 1103.14 1077.78 1121.26 1092.03 1075.32 1011.11 1173.69 1106.35 664.12 953.4 1969 516.56 744.74 1431.38 2393.73 1633.25 1473.33 1642.75 1643.76 1647.77 1524.28 1362.61 816.35 1402.54 1970 529.62 861.95 1112.77 1261.62 1172.41 1239.81 1214.62 1306.78 1279.65 1376.21 1385.55 837 1131.5 1971 484.49 1267.29 1649.05 1364.69 1768.53 2141.14 1651.25 1430.37 1432.09 1536.43 1728.85 1062.62 1459.73 1972 655.4 790.43 1252.34 1442.47 1850.38 1629.36 1569.13 1552.78 1728.85 1626.31 1793.88 977.3 1405.72 1973 1197.35 1198.72 2095.64 1688.07 1706.78 1658.24 1439.87 1151.77 1302.3 1603.93 1298.43 927.34 1439.04 1974 901.76 1111.75 1192.42 1393.95 1482.35 1288.42 1071.3 1108.02 1064.72 1116.33 1084.07 676.78 1124.32 1975 627.91 646.64 947.89 1410.38 1349.9 1609.07 1677.37 1919.8 1975.87 1894.5 1965.95 1122.81 1429.01 1976 778.81 1024.78 1214.25 1368.56 1369.63 1310.98 1196.53 1155.24 1163.26 1153.87 1145.33 807.03 1140.69 1977 596.39 671.52 889.25 1139.85 1186.39 1089.17 1067.64 1186.21 1342.98 1149.76 1231.6 640.33 1015.92 1978 555.01 568.67 1768.62 1679.01 1387.9 1476.64 1774.84 1693.9 1821.16 1681.76 1700.44 1019.14 1427.26 1979 673.85 790.85 2253.67 1649.84 1741.86 1567.44 1423.71 1322.5 1311.93 1298.65 1508.73 1111.76 1387.9 1980 836.17 816.8 1052.39 1367.15 1274.81 1482.96 1090.39 1145.83 1099.93 1161.82 1175.44 636.22 1094.99 1981 582.6 589.09 743.64 1108.8 1105.28 1101.91 1068.19 1148.76 1097.85 1145.83 850.64 671.02 934.47 1982 516.83 1012.54 1114.32 1176.85 1739.58 1672.69 1439.05 1336.74 1233.39 1484.27 1673.06 1358.67 1313.17 1983 1109.11 1488.26 2001.74 2230.44 1972.51 2350.03 2058.46 1464.63 1423.97 1411.74 1414.25 963.05 1657.35 1984 918.29 1407.26 1634.44 2915.14 2672.3 3698.58 2180.68 1637.45 1588.68 1711.99 1786.61 1305.14 1954.71 1985 882.76 963.79 1338.02 1492.78 1593.61 1336.66 1173.6 1143.18 1205.74 1214.62 1148.16 819.09 1192.67 1986 755.52 869.43 1470.29 1780.67 2144.51 1813.23 1882.9 1473.67 1765.56 2202.15 1824.84 1564.19 1628.91 1987 1178.72 1071.09 1724.69 2123.59 1710.35 1542.52 1412.84 1394.66 1348.08 1166.66 1259.07 919.94 1404.35 1988 747.84 930.85 1139.35 1199.7 1239.46 1091.24 1066.55 1026.08 1138.34 1118.8 850.27 575.29 1010.31 1989 570.91 604.13 796.8 1047.16 1037.96 1097.76 1084.54 1025.53 1313.81 969.63 531.79 435.57 876.3 1990 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1991 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1992 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 590.72 767.26 1170.51 1609.89 1453 1565.67 1351.55 1240.59 1254.94 1240.1 1114.82 701.66 1171.73 Std Dev 234.2 297.16 421.44 908.1 431.69 552.3 342.65 259.54 287.51 308.81 416.2 310.5 299.59