Country= U.S.A. Station= MEREDOSIA, IL River= ILLINOIS RIVER Area= 67411.11 Lat= 39.82 Lon= -90.57 Source= USGS PointID= 5585500 Area Units= km2 Discharge Units= m3/sec Starting Year= 1908 Ending Year= 1993 Total Years= 86 Total Usable Years= 82 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1908 190.13 175.49 200.98 280.86 358.62 669.13 333.26 161.82 159.64 201.42 197.14 175.03 258.63 1909 197.74 193.99 182.14 221.17 495 1004.4 598.95 270.48 268.15 229.88 259.76 278.29 350 1910 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1911 266.18 195.96 212.26 226.41 521.67 841.77 358.8 164.61 159.67 178.32 191.95 193.6 292.6 1912 195.02 187.43 178.3 208.95 468.04 850.64 464.76 300.56 351.56 297.17 260.76 183.91 328.93 1913 167.67 180.64 199.8 361.05 628 805.24 430.71 225.67 295.85 254.3 245.36 195.96 332.52 1914 201.35 191.39 209.91 362.15 603.88 673.38 247.8 167.42 188.41 239.94 232.91 183.49 291.84 1915 169.9 173.64 169.05 234.38 263.43 273.48 162.44 117.66 104.56 175.45 173.16 153.1 180.85 1916 128.17 157.3 211.37 342.23 512.81 525.75 362.44 247.74 201.87 220.65 192.94 166.83 272.51 1917 142.22 151.2 158.92 245.23 614.53 826.2 610.42 255.51 214.91 201.79 204.47 200.57 318.83 1918 178.47 153.41 191.25 260.78 389.95 936.25 363.06 275.44 206.29 188.99 195.08 167.18 292.18 1919 147.34 161.68 189.24 277.59 307.13 227.44 146.18 82.84 72.64 113.17 160.03 124.91 167.52 1920 132.42 141.36 144.11 172.28 485.26 410.27 259.82 212.83 135.05 154.18 190.17 173.8 217.63 1921 167.17 165.72 189.56 241.89 609.82 660.39 262.01 211.76 150.07 135.81 171.34 177.17 261.89 1922 140.09 151.85 183.17 221.39 547.52 475.54 268.43 216.83 127.41 110.75 175.36 159.74 231.51 1923 169.01 138.44 167.19 210.91 442.57 434.95 286.33 206.5 138.09 180.42 187.83 162.33 227.05 1924 148.33 171.99 157.03 174.61 171.24 170.69 148.66 78.81 75.64 112.41 148.79 126.29 140.37 1925 140.18 164.61 158.94 345.09 557.48 416.9 368.46 223.42 185.87 207.97 208.22 193.86 264.25 1926 156.31 180.41 193.79 237.15 224.83 238.31 201.96 117.12 86.53 107.13 56.71 56.67 154.74 1927 111.93 88.92 66.73 94.56 316.01 588.24 422.43 253.06 212.92 94.14 218.78 275.39 228.59 1928 229.04 227.14 224.91 240.33 706.28 407.43 271.24 258.53 200.05 207.35 109.71 134.57 268.05 1929 78.74 93.06 134.41 304.23 285.61 258.83 273.04 254.3 200.27 73.89 206.8 164.1 193.94 1930 187.11 86.78 49.25 209.92 166.51 258.75 282.12 229.22 167.31 47.36 133.09 150.93 164.03 1931 68.65 46.3 75.45 133.36 272.4 261.36 284.68 210.88 93.56 94.73 64.08 51.53 138.08 1932 51.6 74.42 51.56 86.67 231 258.29 324 311.47 211.01 64.4 39 78.83 148.52 1933 58.8 62.67 48.35 130.08 247.87 302.6 310.07 316.15 211.38 65.82 64.39 44.68 155.24 1934 45.44 41.29 57.02 129.8 213.61 171.65 214.09 160.37 88.92 85.23 53.98 22.56 107 1935 33.69 20.15 37.03 47.79 224.75 289.39 311.95 248.93 153.06 60.73 56.99 29.57 126.17 1936 26.29 14.8 16.36 77.48 429.25 455.62 316.81 290.57 167.94 55.91 47.9 33.36 161.02 1937 50.23 24.37 49.94 161.37 320.08 265.37 329.39 308.66 161.83 66.44 36.15 32.78 150.55 1938 27.98 23.95 31.68 251.06 412.2 440.8 404.89 305 219.12 53.84 36.82 39.48 187.24 1939 81.1 117.73 176.46 280.72 313.99 279.29 313.95 307.77 176.47 40.66 42.62 37.36 180.68 1940 30.03 29.76 36.22 127.75 288.12 306.14 312.49 285.16 115.21 38.08 35.69 30.92 136.3 1941 49.2 42.92 39.19 108.52 283.33 252.23 310.21 294.78 150.5 23.03 9.08 32.61 132.97 1942 110.46 62.79 58.11 209.33 289.68 274.57 329.79 325.28 220.76 89.63 52.44 56.34 173.27 1943 80.65 143.59 186.39 372.19 351.26 601.26 443.94 323.36 204.92 153.65 135.27 120.87 259.78 1944 103.8 43.97 145.44 197.3 257.12 370.89 333.14 318.79 216.37 67.72 46.25 38.08 178.24 1945 77.13 75.44 90.26 123.98 318.99 417.85 336.24 317.42 202.93 89.33 172.2 169.08 199.24 1946 193.42 166.69 172.17 371.34 336.99 397.85 324.73 309.96 172.02 88.96 113.63 121.35 230.76 1947 137.21 122.11 52.56 182.53 366.24 465.92 330.85 315.96 213.41 98.12 85.64 119.55 207.51 1948 116.02 87.53 75.05 231.94 461.28 546.71 334.41 319.16 206.27 51.93 61.29 137.68 219.11 1949 160.37 195.76 178.02 175.14 287.21 351.79 338.43 321.14 216.55 98.36 56.12 72.73 204.3 1950 89.17 116.66 163.96 320.44 417.37 529.66 469.15 323 237.91 119.2 98.86 131.05 251.37 1951 233.82 291.36 286.73 260.12 509.89 385.58 350.4 311.24 255.83 167.82 131.73 124.25 275.73 1952 175.33 272.9 301.16 364.44 507.88 464.59 360.72 343.28 243.16 76.33 45.67 48.43 266.99 1953 73.53 132.8 162.34 163.05 268.81 403.05 355.24 334.87 241.57 72.38 22.42 66.02 191.34 1954 72.25 79.34 110.12 212 374.61 277.84 342.25 334.14 239.48 75.87 91.61 76.64 190.51 1955 69.3 37.56 86.57 194.45 292.65 325.17 338.43 320.62 238.26 62.59 30.61 24.84 168.42 1956 94.23 126.09 191.05 350.72 488.42 598.34 346.56 315.41 226.54 91.76 74.19 66.45 247.48 1957 101.81 70.19 151.32 227.23 537.83 343.38 360.54 336.61 241.19 54.69 28.47 54.41 208.97 1958 83.83 72.16 100.37 188.56 344.25 319.49 355.7 332.41 186.66 72.54 64.8 37.23 179.83 1959 34.68 44.91 64.25 162.45 266.31 314.39 345.74 314.99 194.41 62.74 43.68 29.63 156.52 1960 36.03 29.86 39.88 151.46 308.57 324.8 366.75 321.33 202.38 72.09 14.38 6.21 156.15 1961 9.84 2.63 8.72 124.51 301.22 282.32 331.95 252.59 90.56 7.81 10.43 1.56 118.68 1962 11.22 30.51 119.74 231.7 373.86 311.66 375.52 346.86 273.41 107.26 36.91 9.74 185.7 1963 19.51 27.37 44.74 118.62 325.17 538.4 376.89 334.23 227.82 105.43 20.24 18.47 179.74 1964 33.81 30.32 28.53 216.06 488.06 503.95 388.13 365.65 264.71 124.33 60.17 71.84 214.63 1965 124.65 307.48 302.37 344.29 419.14 318.66 367.39 306.65 239.26 171.34 139.78 213.44 271.2 1966 213.54 209.14 129.01 170.68 320.44 307.95 358.71 327.66 208.31 88.67 1.59 11.7 195.62 1967 3.48 5.13 43.9 131.29 302.66 381.06 401.55 365.13 279.66 117.25 55.7 110.83 183.14 1968 99.66 133.9 48.58 138.07 313.5 363.4 378.9 257.23 228.24 115.58 85.54 115.79 189.87 1969 241.32 232.07 268.58 295.35 392.69 307.51 357.84 345.19 226.43 76.73 15.16 27.91 232.23 1970 70.96 54.67 39.19 226.11 490.8 453.73 381.27 336.97 205.29 141.73 90.48 166.91 221.51 1971 210.64 224.05 183.22 637.23 708.47 555.39 447.96 353.14 250.49 337.71 309.98 245.99 372.02 1972 237.49 262.57 276.53 522.83 469.7 504.33 341.63 328.2 215.65 229.82 230.27 227.29 320.53 1973 206.81 216.54 205.69 234.23 285.62 307.77 332.41 310.24 180.83 46.5 61.17 79.99 205.65 1974 94.02 204.05 334.74 480.45 602.42 506.87 398.63 312.22 229.55 121.63 98.49 137.16 293.35 1975 178.83 194.46 281 414.82 492.62 409.56 342.64 317.41 258.63 159.33 143.15 204.77 283.1 1976 213.7 233.14 307.5 516.03 712.58 513.95 348.81 286.3 217.18 143.21 128.15 128.71 312.44 1977 119.09 100.92 126.17 194.11 199.89 264.6 305.39 211.09 112.95 54.73 6.25 5.32 141.71 1978 9.48 30.22 85.29 226.6 353.34 281.4 344.46 317.35 166.18 124.45 98.37 124.78 180.16 1979 178.82 158.2 226.83 270.53 299.72 334.42 356.7 318.83 222.14 46.37 17.77 13.81 203.68 1980 11.43 11.96 33.68 206.41 424.94 481.96 329.66 316.68 200.46 108.41 51.64 63.97 186.77 1981 71.81 40.38 62.34 197.18 298.61 439.69 341.17 332.31 253.46 87.02 13.75 17.65 179.61 1982 30.34 51.46 170.67 413.05 582.87 405.12 379.81 340.35 253.93 196.46 273.09 292.29 282.45 1983 271.83 205.26 131.82 317.52 632.29 645.82 458.92 295.09 262.01 277.1 288.71 297.47 340.32 1984 357.98 153.05 133.96 407.42 625.99 715.67 439.64 344.1 255.26 357.63 351.7 231.03 364.45 1985 314.85 250.63 210.49 347.92 444.3 371.9 361.54 337.79 211.39 90.82 69.15 128.73 261.63 1986 144.84 168.96 404.7 551.9 681.25 612.78 334.14 323.36 236.08 324.03 250.31 300.16 361.04 1987 189.29 52.58 64.7 194.18 284.17 324.27 332.56 319.14 232.41 69.41 11.02 10.98 173.73 1988 11.69 11.13 27.39 118.47 272.12 319.08 350.4 312.48 154.21 62.66 11.35 11 138.5 1989 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1990 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1991 34.05 11.1 11.01 123.63 213.99 327.17 366.48 348.57 209.95 74.37 9.66 18.37 145.7 1992 22.6 15.2 31.66 205.2 293.51 273.42 270.94 229.57 106.54 67.99 9.64 14.57 128.4 1993 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 121.32 119.9 138.42 244.42 396.39 430.65 344.16 282.97 198.6 122.96 108.85 110.18 218.24 Std Dev 78.53 78.9 87.38 113.3 138.87 176.73 74.76 64.78 54.22 74.71 86.17 80.96 65.42