Results
| Country: | U.S.A.
| | Station: | VALLEY CITY | | River: | ILLINOIS RIVER | | Area: | 69262.85 | | Lat: | 39.7 | | Lon: | -90.64 | | Source: | USGS | | PointID: | 5586100 | | Area Units: | km2 | | Discharge Units: | m3/sec | | Starting Year: | 1938 | | Ending Year: | 1993 | | Total Years: | 56 | | Total Usable Years: | 55 | |
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| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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| 1938 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | 416.9 | 321.4 | 276.48 | -9999 |
| 1939 | 271.68 | 633.55 | 1395.75 | 1096.81 | 851.89 | 574.08 | 534.1 | 325.06 | 146.25 | 166.28 | 162.19 | 180.99 | 528.22 |
| 1940 | 159.67 | 246.29 | 433.66 | 307.96 | 434.01 | 369.37 | 204.2 | 195.4 | 190.29 | 158.35 | 168.85 | 272.56 | 261.72 |
| 1941 | 262.72 | 312.84 | 381.51 | 540.48 | 437.27 | 507.66 | 278.8 | 161.65 | 232.8 | 950.22 | 1079.82 | 639.6 | 482.11 |
| 1942 | 506.78 | 1477.34 | 1232.98 | 1304.94 | 616.58 | 532.64 | 667.39 | 325.64 | 405.25 | 216.49 | 624.5 | 676.96 | 715.62 |
| 1943 | 1203.29 | 1144.61 | 886.87 | 751.44 | 2131.81 | 1975.02 | 618.68 | 446.04 | 229.9 | 187.27 | 209.73 | 203.58 | 832.35 |
| 1944 | 209.28 | 257.6 | 851.61 | 1693.92 | 1841.24 | 765.41 | 231.13 | 176.84 | 195 | 216.1 | 216.37 | 191.93 | 570.54 |
| 1945 | 144.33 | 269.31 | 567.44 | 961.08 | 1236.81 | 1209.32 | 562.17 | 247.83 | 255.11 | 526.01 | 336.84 | 420.74 | 561.42 |
| 1946 | 1348.62 | 679.71 | 957.75 | 694.24 | 752.5 | 826.86 | 580.36 | 260.64 | 193.93 | 196.26 | 590.6 | 360.69 | 620.18 |
| 1947 | 522.73 | 519.82 | 428.48 | 1256.8 | 1414.3 | 1601.23 | 766.96 | 247.4 | 229.65 | 173.01 | 262.58 | 461.66 | 657.05 |
| 1948 | 373.78 | 406.1 | 1288.24 | 1429.73 | 815.62 | 444.2 | 655.95 | 397.83 | 227.71 | 177.92 | 187.42 | 218.48 | 551.92 |
| 1949 | 597.67 | 1106.69 | 1053.85 | 709.62 | 431.79 | 441.84 | 401.92 | 327.02 | 207.86 | 229.29 | 173.09 | 422.96 | 508.63 |
| 1950 | 1402.33 | 1385 | 1174.7 | 1446.9 | 1433.11 | 806.47 | 848.14 | 337.93 | 287.88 | 228.04 | 196.46 | 256.96 | 816.99 |
| 1951 | 533.69 | 969.76 | 1434.76 | 1313.25 | 1004.34 | 624.39 | 1263.21 | 652.02 | 343.3 | 369.2 | 642.04 | 559.03 | 809.08 |
| 1952 | 806.4 | 859.08 | 977.48 | 1328.63 | 1005.89 | 925.21 | 672.39 | 372.88 | 202.72 | 160.98 | 191.38 | 255.46 | 646.54 |
| 1953 | 251.34 | 315.03 | 676.96 | 770.32 | 550.17 | 451.24 | 547.25 | 228.63 | 192.66 | 139.17 | 159.45 | 196.4 | 373.22 |
| 1954 | 183.33 | 247.85 | 363.85 | 856.78 | 610.17 | 705.66 | 361.24 | 313.36 | 188.87 | 618.97 | 401.44 | 323.58 | 431.26 |
| 1955 | 765.47 | 580.4 | 898.38 | 735.39 | 746.2 | 828.93 | 363.8 | 227.54 | 192.91 | 279.82 | 242.46 | 237.68 | 508.25 |
| 1956 | 192.03 | 328.43 | 443.7 | 283.39 | 690.57 | 499.04 | 378.18 | 328 | 174.98 | 127.93 | 156.28 | 252.92 | 321.29 |
| 1957 | 408.68 | 484.83 | 350.46 | 847.24 | 1523.09 | 990.72 | 964.15 | 440.86 | 198.12 | 215.52 | 346.42 | 468 | 603.17 |
| 1958 | 550.72 | 406.26 | 609.91 | 448.45 | 337.94 | 1071.8 | 1187.4 | 871.98 | 244.16 | 170.59 | 231.45 | 251.68 | 531.86 |
| 1959 | 317.79 | 1113.36 | 1233.71 | 882.64 | 878.83 | 442.85 | 270.66 | 328.53 | 178.15 | 422.29 | 421.66 | 424.39 | 576.24 |
| 1960 | 742 | 813.87 | 447.23 | 1788.69 | 1049.46 | 1052.54 | 886.78 | 377.8 | 201.12 | 163.48 | 220.32 | 234.5 | 664.82 |
| 1961 | 191.42 | 239.33 | 554.35 | 557.84 | 1014.3 | 394.27 | 449.42 | 381.8 | 679.13 | 840.74 | 740.96 | 588.9 | 552.7 |
| 1962 | 541.22 | 1049.95 | 1507.56 | 1524.21 | 852.89 | 550.62 | 423.62 | 244.2 | 192.25 | 204.27 | 198.7 | 167.73 | 621.44 |
| 1963 | 136.16 | 117.33 | 863.3 | 453.45 | 440.38 | 265.9 | 258.84 | 222.42 | 158.15 | 129.88 | 169.17 | 175.68 | 282.56 |
| 1964 | 183.39 | 181.49 | 307.74 | 771.83 | 644.64 | 390.16 | 303.83 | 181.69 | 162 | 120.57 | 165.54 | 202.39 | 301.27 |
| 1965 | 608.11 | 826.15 | 833.43 | 1291.82 | 1085.45 | 467.92 | 279.2 | 287.19 | 705.75 | 557.21 | 338.27 | 459.47 | 645 |
| 1966 | 865.68 | 741.8 | 768.85 | 646.1 | 1409.55 | 853.47 | 270.17 | 227.3 | 196.6 | 152.45 | 232.11 | 625.07 | 582.43 |
| 1967 | 345.55 | 537.01 | 716.24 | 1157.32 | 1072.39 | 638.36 | 420.24 | 300.91 | 197.66 | 286.1 | 636.38 | 943.32 | 604.29 |
| 1968 | 825.76 | 1369.18 | 547.34 | 710.85 | 621.24 | 784.85 | 831.06 | 412.79 | 236.09 | 203.17 | 271.07 | 448.15 | 605.13 |
| 1969 | 787.67 | 1340 | 566.61 | 1117.67 | 802.56 | 568.32 | 938.75 | 442.92 | 228.59 | 710.56 | 425.79 | 350.95 | 690.03 |
| 1970 | 253.26 | 474.92 | 497.19 | 1221.69 | 2213.38 | 1842.12 | 633.13 | 369.84 | 704.39 | 1089.75 | 752.76 | 525.23 | 881.47 |
| 1971 | 261.34 | 621.97 | 979.95 | 554.11 | 358.92 | 296.82 | 387.85 | 289.66 | 236.21 | 207.53 | 176 | 548.69 | 409.92 |
| 1972 | 534.83 | 289.81 | 661.8 | 982.13 | 1023.89 | 661.01 | 564.79 | 633.75 | 714.06 | 805.85 | 1013.94 | 975.29 | 738.43 |
| 1973 | 1438.14 | 1011.42 | 1476.32 | 2285.56 | 2002.38 | 1440.77 | 941.04 | 395.04 | 229.67 | 536.01 | 324.56 | 678.79 | 1063.31 |
| 1974 | 1093.13 | 1898.86 | 1668.88 | 1334.39 | 1297.1 | 2483.21 | 1427.63 | 316.64 | 204.14 | 177.33 | 325.78 | 413.98 | 1053.42 |
| 1975 | 871.89 | 962.37 | 1217.81 | 1134.47 | 1212.79 | 924.74 | 679.79 | 272.05 | 342.35 | 228.82 | 235.36 | 616.21 | 724.89 |
| 1976 | 382.41 | 748.94 | 1805.62 | 950.6 | 1174.79 | 507.44 | 377.77 | 230.14 | 146.22 | 163.03 | 168.47 | 193.3 | 570.73 |
| 1977 | 316.65 | 328.49 | 446.22 | 477.05 | 660.43 | 236.39 | 246.48 | 425.21 | 626.32 | 999.41 | 752.57 | 653.3 | 514.04 |
| 1978 | 368.12 | 267.8 | 828.14 | 1735.27 | 1508.66 | 690.09 | 721.44 | 342.49 | 323.84 | 208.08 | 201.39 | 233.45 | 619.06 |
| 1979 | 247.81 | 310.48 | 2157.66 | 2656.04 | 1676.37 | 511.5 | 370.75 | 543.14 | 353.4 | 218.38 | 222.57 | 317.91 | 798.83 |
| 1980 | 331.57 | 271.08 | 641.15 | 982.51 | 534.73 | 1363.94 | 372.05 | 397.35 | 665.45 | 338.67 | 220.94 | 465.97 | 548.78 |
| 1981 | 245.89 | 358.71 | 537.51 | 818.07 | 1530.31 | 1372.9 | 1394.84 | 1439.97 | 724.35 | 476.82 | 361.85 | 447.57 | 809.07 |
| 1982 | 450.42 | 925.26 | 2328.84 | 2069.78 | 996.03 | 872.07 | 925.24 | 619.69 | 292.59 | 218.88 | 524.51 | 2212.38 | 1036.31 |
| 1983 | 1241.56 | 740.19 | 759.9 | 2220.05 | 1862.98 | 837.52 | 510.44 | 226.87 | 256.1 | 250.08 | 352.54 | 873.26 | 844.29 |
| 1984 | 459.47 | 1015.51 | 1379.04 | 1548.75 | 1281.21 | 1239.81 | 445.86 | 263.97 | 204.12 | 232.95 | 443.82 | 479.47 | 749.5 |
| 1985 | 672.03 | 597.39 | 2688.29 | 1484.94 | 629.28 | 380.58 | 317.18 | 350.57 | 247.85 | 304.5 | 1384.61 | 1683.58 | 895.07 |
| 1986 | 465.86 | 715.34 | 945.42 | 498.27 | 700.43 | 725.48 | 764.56 | 303.89 | 390.93 | 1394.57 | 743.7 | 890.8 | 711.6 |
| 1987 | 534.37 | 652.2 | 505.14 | 578.37 | 465.59 | 472.76 | 250.5 | 366.39 | 337.79 | 292.67 | 326.31 | 628.73 | 450.9 |
| 1988 | 856.18 | 777.25 | 538.57 | 907.84 | 316.33 | 175.75 | 188.28 | 199.12 | 191.25 | 185.95 | 299.68 | 254.52 | 407.56 |
| 1989 | 330.51 | 212.62 | 369.58 | 433.16 | 322 | 516.95 | 246.33 | 230.86 | 715.4 | 227.82 | 250.24 | 179.75 | 336.27 |
| 1990 | 340.86 | 647.35 | 1409.91 | 743.42 | 1330.9 | 1528.08 | 1322.13 | 702.44 | 438.67 | 559.13 | 661.58 | 1265.77 | 912.52 |
| 1991 | 1289.79 | 1126.31 | 1190.5 | 1395.84 | 1480.98 | 972.41 | 274.36 | 234.38 | 229.51 | 378.84 | 588.24 | 794.43 | 829.63 |
| 1992 | 470.06 | 555.31 | 666.27 | 642.51 | 464.27 | 284.2 | 591.83 | 559.79 | 458.09 | 289.88 | 977.41 | 1064.81 | 585.37 |
| 1993 | 1685.96 | 1102.04 | 1456.04 | 2000.03 | 1438.32 | 969.67 | 1722.22 | 1412.84 | 1780.29 | -9999 | -9999 | -9999 | -9999 |
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| Avg | 570.57 | 683.12 | 943.83 | 1078.81 | 1003.98 | 797.57 | 601.75 | 389.42 | 336.14 | 354.55 | 400.54 | 511.75 | 628.67 |
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| Std Dev | 379.9 |
391.47 |
519.18 |
530.97 |
489.16 |
464.35 |
352.02 |
246.04 |
261.74 |
274.08 |
270.66 |
379.27 |
190.56 |
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| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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