Country= U.S.A. Station= MARSEILLES, IL River= ILLINOIS RIVER Area= 21389.54 Lat= 41.32 Lon= -88.72 Source= USGS PointID= 5543500 Area Units= km2 Discharge Units= m3/sec Starting Year= 1911 Ending Year= 1993 Total Years= 83 Total Usable Years= 80 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1911 190.04 216.83 220.59 209.2 476.37 758.42 304.55 102.64 109.27 176.12 198.33 189.47 262.65 1912 204.63 187.19 173.64 187.1 427.57 793.82 410.49 247.07 334.61 294.29 258.77 168.47 307.3 1913 168.3 173.03 194.86 327.07 559.31 735.77 376.84 174.08 247.18 273.55 239.36 200.59 305.83 1914 184.54 187.77 207.21 334.74 531.63 617.88 191.65 122.62 140.43 234.1 216.92 167.13 261.39 1915 182.03 182.77 172.29 192.57 209.12 229.02 96.62 66.35 78.09 152.24 163.16 160.74 157.08 1916 153.89 168.86 208.28 321.57 463.34 456.66 282.32 175.63 153.23 226.72 195.39 171.5 248.12 1917 148.66 164.88 169.45 245.82 561.42 741.62 523.63 178.93 176.86 198.07 194.69 206.13 292.51 1918 191.29 169.26 188.56 222.64 304.71 861.78 293.03 206.86 168.52 181.75 191.19 169.15 262.4 1919 152.4 164.59 184.83 246.16 222.75 147.78 84.56 58.53 60.91 93.25 136.06 123.18 139.58 1920 129.43 141.98 131.15 143.28 403.17 332.85 182.23 141.16 95.68 151.81 195.31 175.38 185.29 1921 170.34 176.22 188.11 225.54 564.7 611.73 187.29 141.4 126.86 119.92 167.63 182.68 238.54 1922 139.29 149.07 185.34 206.85 495.04 396.89 188.34 150.49 103.06 78.45 179.82 168.34 203.42 1923 174.26 146.63 164.24 192.62 374.11 372.88 204.86 157.87 101.59 150.75 187.34 168.66 199.65 1924 143.28 178.34 149.72 130.23 122.33 95.45 87.27 69.71 69.28 60.98 137.59 124.17 114.03 1925 107.98 164.82 152.35 295.37 487.72 349.83 291.71 159.69 138.19 184.96 194.26 196.85 226.98 1926 160.36 183.49 182.63 192.79 140.39 158.39 129.58 92.82 85.9 69.33 53.72 51.99 125.12 1927 112.54 70.68 62.95 72.02 248.95 509.99 347.95 183.17 154.54 70.91 208.41 283.24 193.78 1928 228.52 224.39 219.07 214.87 630.56 349.21 196.81 185.08 145.4 190.32 105.85 131.34 235.12 1929 101.22 94.29 164.21 298.85 212.15 189.94 188.76 182.69 149.16 64.92 194.86 165.1 167.18 1930 194.02 101.29 54.19 140.81 127.52 179.32 202.1 162.83 111.54 52.63 118.97 151.98 133.1 1931 75.96 56.85 55.19 88.25 200.96 180.13 198.26 192.67 85.59 65.42 67.44 54.39 110.09 1932 55.64 67.56 52.41 59.57 167.39 185.8 237.78 226.4 162.52 51.37 48.24 69.49 115.35 1933 59.55 63.46 52.4 88.58 185.56 222.09 225.81 227.95 162.68 63.91 38.83 46.02 119.74 1934 45.85 44.92 50.63 97.94 161.22 168.73 169.4 147.01 92.88 47.71 25.15 28.01 89.95 1935 37.28 28.28 23.62 28.74 174.37 212.59 226.11 196.09 122.62 42.26 31.77 35.04 96.56 1936 32.58 20.96 18.96 56.25 339.3 389.67 232.72 223.44 143.03 48.83 27.86 27.93 130.13 1937 47.25 30.04 49.92 141.31 253.33 198.61 240.59 230.91 140.5 38.26 25.02 29.76 118.79 1938 30.79 27.1 28.56 224.64 337.57 370.36 342.9 225.09 171.56 39.05 31.73 40.26 155.8 1939 84.26 121.07 181.07 235.89 240.59 214.51 233.13 229.52 142.82 29.34 37 38.92 149.01 1940 35.22 34.96 26.08 110.13 209.58 227.76 233.27 222.85 125.52 29.38 41.79 38.63 111.26 1941 38.05 37.92 25.26 94.22 210.83 193.37 230.02 222.81 145.74 43.42 50.21 37.32 110.76 1942 40.96 57.02 45.91 193.18 246.47 201.15 238.9 240.74 173.49 74.58 66.34 89.12 138.99 1943 88.17 155.26 184.69 350.72 276.74 549.82 356.25 244.68 177.26 138.04 137.75 124.7 232.01 1944 107.31 45.89 126.2 189.32 199.2 339.89 250.72 239.77 171.48 50.63 48.4 44.49 151.11 1945 78.84 79.98 82.33 125.89 263.59 358.34 256.09 239.09 161.29 87.65 171.69 178 173.56 1946 199.6 177.76 178.75 357.41 264 333.08 240.4 236.42 145.09 89.17 118.56 127.97 205.68 1947 139.67 133.81 58.61 145 287.34 422.44 245.58 239.17 164.7 75.37 89.72 127.7 177.43 1948 122.9 94.29 75.35 224.53 388.26 478.13 248.56 243.69 168.85 42.71 64.58 141.58 191.12 1949 175.98 202.51 184.65 155.13 232.13 282.3 250.93 248.26 169.3 87.6 83.38 77.68 179.15 1950 99.44 126.13 161.59 311.49 352.59 471.65 383.29 249.36 199.29 106.68 113.48 136.22 225.93 1951 228.6 304.05 289.15 228.4 458.74 317.99 270.14 248.31 202.46 145.4 137.17 135.78 247.18 1952 174.88 274.2 299.98 347.26 428.51 393.62 281.87 263.97 194.84 71.79 35.33 53.14 234.95 1953 80.41 134.14 165.88 156.01 220.03 357.93 269.13 256.87 195.5 46.5 40.74 70.7 166.15 1954 81.47 81.95 95.57 187.67 296.29 227.21 260.29 255.64 193.91 82.9 76.43 78.47 159.82 1955 74.28 42.11 85.39 176.34 225.94 257.2 253.95 246.09 191.08 47.34 30.04 41.95 139.31 1956 98.77 129.68 187.21 317.15 415.32 533.61 259.07 241.04 183.25 85.03 78.38 79.59 217.34 1957 103.16 83.59 142.49 218.22 481.58 269.61 272.68 257.33 192.17 51.28 37.49 60.9 180.88 1958 82.04 83.12 96.41 176.04 262.64 250.46 270.7 256.36 180.4 66.4 39.96 39.37 150.33 1959 36 47.24 52.76 127.76 209.84 233.17 262.39 240.48 154.88 55.14 53.33 37.76 125.9 1960 38.02 33.18 32.8 128.8 232.13 242.96 276.08 246.88 185.67 39.32 16.43 18.27 124.21 1961 12.83 8.12 7.12 110.47 220.88 203.78 243.72 207.96 88.33 20.21 8.67 8.34 95.04 1962 16.64 21.05 113.25 199.27 319.76 242.78 278.93 275.73 221.28 89.1 38.4 32.55 154.06 1963 30.73 22.56 34.95 99.36 277.21 486 282.05 257.36 195.03 81.94 35.07 38.89 153.43 1964 37.6 34.48 35.73 190.83 415.95 458.57 287.64 275.18 208.05 100.52 88.69 90.92 185.35 1965 126.17 302.08 294.41 326.13 361.05 248.93 279.51 246.07 184.27 149.06 138.47 240.9 241.42 1966 223.51 208.55 116.42 133.86 244.84 235.37 267.79 250.85 184.48 72.88 9.88 12.56 163.42 1967 11.28 11.78 23.61 115.17 239.92 313.87 299.67 271.49 230.59 105.75 82.6 117.48 151.93 1968 108.25 128.2 41.02 117.43 236.45 276.39 280.35 216.04 182.39 110.89 100.7 120.63 159.9 1969 249.08 244.35 265.14 252.12 300.39 221.88 260.59 257.48 189.9 70.23 39.47 38.69 199.11 1970 88.29 74.02 33.48 199.96 441.2 372.18 293.28 253.75 175.23 128.78 120.17 177.05 196.45 1971 226.44 234.95 168.32 626.66 662.25 479.5 353.79 269.37 210.83 327.01 324.25 260.14 345.29 1972 248.04 267.51 285.83 526.13 419.46 452.81 268.15 258.07 188.28 237.79 265.17 246 305.27 1973 232.36 241.84 217.66 244.49 232.79 232.3 252.52 239.94 161.35 65.48 73.3 97.53 190.96 1974 112.39 210.29 338.32 483.37 535.28 427.3 313.46 244.21 181.75 107.59 117.16 159.11 269.19 1975 203.12 205.62 275.8 426.17 497.28 367.76 267.5 248.42 202.88 138.6 163.41 212.85 267.45 1976 221.18 239.55 301.91 523.77 655.86 444.94 267.27 228.55 181.07 144.98 138.19 152.24 291.63 1977 119.59 98.99 109.38 151.31 189.75 203.66 230.03 200.27 78.55 23.17 11.14 12.66 119.04 1978 25.86 38.21 70.44 207.71 320.77 228.64 262.38 250.62 135.09 106.54 120.69 133.27 158.35 1979 184.57 165.56 230.27 243.07 237.67 250.47 270.14 254.93 192.08 71.22 13.61 12.61 177.18 1980 19.65 20.26 28.36 174.3 428.96 451.08 277.63 259.05 161.04 91.3 76.96 78.05 172.22 1981 81.41 42.07 43.71 182.96 270.23 399.77 283.94 269.42 216.38 91.08 30.85 30.79 161.88 1982 39.84 57.95 150.33 434.76 558.76 337.28 316.49 285.81 231.33 195.26 292.85 295.03 266.31 1983 279.28 218.49 119.75 303.24 601.6 587.2 415.41 259.51 224.92 295.85 340.38 322.95 330.72 1984 375.34 178.12 134.08 417.44 626.35 677.15 361.16 286.9 216.93 337.11 357.36 243.08 350.92 1985 304.54 249.74 202.38 305.68 364.05 271.81 279.85 268.08 180.78 87.32 92.51 120.98 227.31 1986 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1987 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1988 15.55 15.25 16.28 74.06 195.52 236.09 266.27 237.64 147.03 50.17 11.64 13.32 106.57 1989 13.33 16.7 20.66 58.59 207.98 240.93 283.38 261.8 192.21 80.05 36.83 35.55 120.67 1990 19.18 15.67 18.43 116.94 205.07 207.38 268.87 259.08 197.18 71.22 14.21 15.5 117.39 1991 36.07 13.47 14.12 73.8 173.56 228.32 273.53 270.2 187.46 74.5 12.5 22.61 115.01 1992 26.8 14.24 15.57 136.01 214.49 211.68 217.27 205.67 97.91 48.23 12.42 17.98 101.52 1993 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 118.99 120.81 127.63 214.96 330.5 349.62 262.38 219.6 163.69 106.77 107.12 110.32 186.03 Std Dev 79.73 81.77 86.38 117.75 141.2 166.06 68.07 52.22 46 72.25 84.81 77.63 64.69