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 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 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