Results
| Country: | U.S.A.
| | Station: | HAVANA, IL | | River: | ILLINOIS RIVER | | Area: | 47391.60 | | Lat: | 40.29 | | Lon: | -90.07 | | Source: | USGS | | PointID: | 5570500 | | Area Units: | km2 | | Discharge Units: | m3/sec | | Starting Year: | 1926 | | Ending Year: | 1971 | | Total Years: | 46 | | Total Usable Years: | 35 | |
| |
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
|---|
| 1926 | 439 | 599.92 | 586.8 | 548.12 | 408.86 | 226.8 | 187.31 | 180.42 | 206.7 | 248.38 | 333.12 | 424.3 | 365.81 |
| 1927 | 418.63 | 654.32 | 625.9 | 841.77 | 1081.89 | 1437.28 | 656.71 | 248.75 | 313.29 | 388.03 | 612.4 | 710.03 | 665.75 |
| 1928 | 634.48 | 607.55 | 1022.7 | 946.45 | 1574.88 | 750.97 | 296.01 | 229.21 | 271.62 | 448.6 | 445.62 | 400.27 | 635.7 |
| 1929 | 396.53 | 364.58 | 657.32 | 769.56 | 582.78 | 539.82 | 245.65 | 216.61 | 264.31 | 323.36 | 483.84 | 475.91 | 443.36 |
| 1930 | 425.94 | 515.67 | 400.73 | 417.96 | 479.74 | 381.56 | 217.63 | 229.34 | 258.58 | 324.73 | 385.49 | 413.43 | 370.9 |
| 1931 | 353.87 | 332.42 | 400.37 | 396.72 | 348.94 | 234.47 | 186.29 | 194.27 | 224.48 | 269.64 | 319.77 | 323.43 | 298.72 |
| 1932 | 318.89 | 336.29 | 700.89 | 804.39 | 976.11 | 751.72 | 285.86 | 232.65 | 273.4 | 316.58 | 355 | 356.98 | 475.73 |
| 1933 | 338.8 | 330.98 | 435.63 | 563.13 | 609.18 | 842.53 | 271.23 | 240.39 | 278.93 | 321.72 | 348.96 | 355.79 | 411.44 |
| 1934 | 413.88 | 368.83 | 374.7 | 435.52 | 336.05 | 247.91 | 210.66 | 210.21 | 226.89 | 261.73 | 294.4 | 299.43 | 306.68 |
| 1935 | 304.34 | 297.59 | 327.02 | 506.02 | 513.91 | 493.79 | 229.77 | 222.67 | 247.6 | 267.7 | 303.18 | 283.13 | 333.06 |
| 1936 | 321.66 | 356.91 | 434.16 | 1009.31 | 1011.65 | 755.08 | 239 | 243.32 | 283.59 | 300.74 | 314.51 | 307.56 | 464.79 |
| 1937 | 289.44 | 339.91 | 404.93 | 617.31 | 549.62 | 391.79 | 234.46 | 238.25 | 267.44 | 305.9 | 343.77 | 437.63 | 368.37 |
| 1938 | 366.93 | 413.23 | 714.78 | 1230.75 | 1302.58 | 1059.34 | 554.32 | 261.09 | 288.16 | 364.38 | 376.71 | 371.32 | 608.63 |
| 1939 | 370.4 | 406.45 | 731.86 | 747.19 | 543.23 | 313.88 | 252.37 | 244.3 | 287.44 | 316.88 | 325.93 | 331.86 | 405.98 |
| 1940 | 352.87 | 458.54 | 632.47 | 876.6 | 648.28 | 404.78 | 238.94 | 239.15 | 322.9 | 364.19 | 395.21 | 376.8 | 442.56 |
| 1941 | 377.99 | 455.9 | 556.38 | 544.72 | 590.18 | 616.08 | 284.11 | 286.42 | 325.93 | 373.88 | 413.81 | 474.9 | 441.69 |
| 1942 | 404.93 | 491.7 | 483.4 | 1045.09 | 799.36 | 776.26 | 323.11 | 275.01 | 327.44 | 371.32 | 437.69 | 486.87 | 518.51 |
| 1943 | 670.93 | 745.04 | 979.31 | 1804.64 | 1058.69 | 1341.94 | 736.52 | 317.24 | 344.71 | 481.3 | 506.31 | 448.6 | 786.27 |
| 1944 | 413.79 | 365.39 | 439.1 | 586.73 | 488.06 | 683.38 | 284.73 | 274.7 | 310.52 | 345.19 | 384.54 | 345.74 | 410.16 |
| 1945 | 400.55 | 520.53 | 479.84 | 577.19 | 904.77 | 923.7 | 340.07 | 286.9 | 334.33 | 394.7 | 506.31 | 557.3 | 518.85 |
| 1946 | 573.19 | 520.83 | 864.58 | 1374.22 | 1032.2 | 709.06 | 320 | 284.28 | 352.36 | 439.64 | 499.13 | 576.75 | 628.85 |
| 1947 | 451.52 | 548.44 | 509.16 | 563.89 | 815.71 | 868.29 | 300.55 | 287.75 | 341.22 | 415.16 | 421.26 | 449.78 | 497.73 |
| 1948 | 482.76 | 454.24 | 412.51 | 665.17 | 911.08 | 1070.19 | 351.85 | 296.69 | 350.56 | 384.02 | 381.71 | 441.47 | 516.85 |
| 1949 | 463.58 | 591.12 | 840.38 | 720.2 | 754.79 | 552.94 | 292.5 | 296.43 | 343.01 | 413.61 | 400.31 | 374.97 | 503.65 |
| 1950 | 404.2 | 503.23 | 645.9 | 909.35 | 780.64 | 905.67 | 590.7 | 326.56 | 372.09 | 478.74 | 493.66 | 508.88 | 576.64 |
| 1951 | 567.34 | 826.76 | 838.27 | 1077.74 | 1124 | 747.19 | 386.57 | 349.85 | 361.51 | 530.35 | 518.77 | 583.42 | 659.31 |
| 1952 | 586.53 | 697.67 | 933.27 | 2035.43 | 1553.51 | 927.19 | 480.38 | 338.34 | 392.47 | 414.52 | 364.72 | 372.23 | 758.02 |
| 1953 | 560.77 | 555.52 | 580.5 | 624.48 | 662.16 | 1250.2 | 432.15 | 326.65 | 377.75 | 410.41 | 404.18 | 416.35 | 550.09 |
| 1954 | 441.47 | 491.91 | 533.27 | 694.05 | 685.82 | 603.91 | 360.54 | 319.61 | 364.16 | 442.02 | 422.11 | 392.33 | 479.27 |
| 1955 | 390.04 | 346.58 | 397.72 | 534.06 | 492.72 | 459.49 | 319.37 | 292.69 | 343.11 | 394.15 | 387.75 | 574.56 | 411.02 |
| 1956 | 598.04 | 600.91 | 867.23 | 1073.69 | 1112.04 | 1157.03 | 347.93 | 344.37 | 385.49 | 482.76 | 450.9 | 445.4 | 655.48 |
| 1957 | 407.25 | 593.54 | 938.11 | 1012.33 | 1437.77 | 825.25 | 328.02 | 331.22 | 394.93 | 454.44 | 401.82 | 420.37 | 628.75 |
| 1958 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1959 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1960 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1961 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1962 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1963 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1964 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1965 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1966 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1967 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1968 | 550.45 | 586.36 | 365.64 | 404.82 | 196.18 | 345 | 262.48 | 375.31 | 342.92 | 407.31 | 461.57 | 562.32 | 405.03 |
| 1969 | 709.75 | 874.79 | 987.35 | 1129.19 | 671.27 | 481.53 | 302.15 | 304.69 | 389.52 | 421.38 | 409.18 | 430.97 | 592.65 |
| 1970 | 653.94 | 789.54 | 511.62 | 550.93 | 739.9 | 844.41 | 444.42 | 312.65 | 432.12 | 460.11 | 524.9 | 645.35 | 575.82 |
| 1971 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
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| Avg | 452.99 | 512.66 | 617.54 | 818.25 | 793.67 | 712.01 | 336.98 | 275.94 | 320.04 | 381.07 | 412.24 | 439.33 | 506.06 |
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| Std Dev | 111.36 |
149.39 |
206.77 |
368.23 |
336.98 |
311.2 |
128.19 |
47.58 |
54.11 |
70.1 |
72.45 |
99.17 |
122.24 |
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| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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