Country= U.S.A. Station= GRAFTON, IL River= MISSISSIPPI RIVER Area= 443640.70 Lat= 38.97 Lon= -90.42 Source= USGS PointID= 5587450 Area Units= km2 Discharge Units= m3/sec Starting Year= 1922 Ending Year= 1993 Total Years= 72 Total Usable Years= 70 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1922 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1923 25.49 24.92 24.07 31.15 85.48 80.14 58.05 49.49 42.55 31.5 22.46 18.33 41.14 1924 16.52 15.28 15.15 17.56 31.43 41.76 35.76 33.41 48.2 105.99 116.4 79.46 46.41 1925 60.32 48.28 43.32 60.02 91.72 116.65 107.04 65.32 44.2 41.25 47.57 45.12 64.23 1926 41.34 39.12 35.4 42.48 70.79 104.17 167.48 122.01 81.52 119.37 130.76 118.14 89.38 1927 100.41 86.6 67.89 114.82 388.02 305.6 228.06 137.46 75.89 53.5 39.73 32.39 135.86 1928 31.16 28.61 27.98 32.13 103.84 137.79 187.35 153.81 158.93 208.02 152.69 106.36 110.72 1929 81.24 67.42 61.19 88.78 130.89 114.94 85.01 53.13 37.14 29.61 24.46 24.83 66.55 1930 25.26 27.51 27.55 33.79 97.18 144.55 160.97 119.92 59.77 41.34 33.76 53.39 68.75 1931 61.81 56.59 47.12 43.12 51.72 107.96 132.25 72.41 45.06 39.3 37.11 51.73 62.18 1932 54.62 56.32 56.21 70.22 195.11 191.93 114.45 82.24 66.96 43.45 40.34 38.92 84.23 1933 36.59 36.24 33.12 45.1 99.91 126.59 90.59 51.26 34.62 33.51 51.29 64.98 58.65 1934 66.14 60.02 59.09 76.15 346.3 290.6 147.22 70.98 45.97 37.1 39.27 43.43 106.86 1935 44.43 43.23 44.22 71.6 258.73 200.9 178.62 122.47 87.84 62.23 59.18 55.54 102.42 1936 51.87 46.12 43.52 48.72 238.32 251.52 118.71 54.24 36.36 24.47 20.72 19.39 79.5 1937 23.56 23.11 22.49 37.51 248.82 290.09 158.66 100.11 97.5 68.44 60.2 61.29 99.32 1938 59.7 58.27 54.34 170.06 478.47 309.35 196.99 96.67 59.15 36.2 30.13 28.44 131.48 1939 29.77 31.85 32.96 42.82 168.89 221.72 187.94 114.18 79.37 66.67 53.75 43.79 89.48 1940 34.48 29.14 25.1 31.63 131.24 217.23 173.95 78.07 47.53 31.88 31.43 29.49 71.76 1941 29.66 28.6 27.41 53.41 165.97 201.06 139.77 79.82 139.14 311.86 194.43 113.94 123.76 1942 81.4 65.02 54.09 59.14 197.78 224.27 124.38 71.75 58.24 49.4 44.9 40.24 89.22 1943 38.23 38.05 37.73 54.31 168.92 332.05 345.74 159.24 109.45 99.46 83.54 80.79 128.96 1944 75.52 62.98 52.51 50.38 172.47 345 329.53 317.22 262.39 147.25 99.43 80.66 166.28 1945 73.11 68.36 79.28 256.85 276.84 167.45 130.74 85.33 65.96 55.06 46.5 46.44 112.66 1946 44.26 43.33 46.39 147.39 239.12 143.25 101.38 66.43 50.52 177.62 237 167.53 122.02 1947 127.83 93.43 73.58 65.2 238.55 328.38 274.13 158.07 107.74 130.63 90.62 84.67 147.74 1948 79.1 63.97 47.97 71.42 362.57 216.51 115.13 76.96 62.75 41.48 28.13 24.86 99.24 1949 19.95 18.21 21.68 50.76 167.2 174.55 212.54 161.62 93.23 77.39 100.38 96.41 99.49 1950 84.12 78.08 71.21 66.29 446.92 626.28 397.99 246.18 171.42 120.82 107.85 99.84 209.75 1951 83.46 75.45 60.47 109.73 357.39 328.74 192.5 108.23 93.14 113.86 151.65 145.33 151.66 1952 117.89 90.51 67.74 108.14 204.3 164.56 147.18 189.54 156.77 99.2 58.15 49.55 121.13 1953 44.26 42.44 42.19 58.37 151.08 311.6 257.39 174.43 118.99 103.88 77.2 69.77 120.97 1954 58.61 48.21 42.19 73.51 420.89 386.06 232.5 114.36 68.1 47.26 36.33 33.91 130.16 1955 33.41 33.41 33.41 61.65 148.45 120.19 96.5 63.26 40.82 54.83 71.48 81.97 69.95 1956 76.41 67.35 55.48 68.24 250.3 292.44 164.69 116.04 70.25 47.64 38.62 36.89 107.03 1957 39.11 39.61 37.41 56.07 265.27 194.76 221.72 135.64 73.79 56.04 46.94 59.09 102.12 1958 57.45 52.37 44.17 43.27 53.56 56.76 58.47 42.56 36.94 48.67 45.99 51.35 49.3 1959 51.36 46.81 35.39 33.41 73.85 143.78 117.14 79.93 84.37 94.46 78.64 72.7 75.99 1960 56.83 51.81 45.36 48.94 166.88 222.79 111.81 63.48 52.16 43.25 36.01 43.3 78.55 1961 39.46 35.29 28.47 68.04 243.58 216.41 98.63 55.29 82.21 108.66 90.53 84.21 95.9 1962 73.87 58.96 55.99 56.72 173.13 266.26 201.5 197.54 129.83 73.23 47.36 36.65 114.25 1963 32.37 28.75 27.65 56.79 94.96 160.38 152.34 106.58 70.24 45.74 33.71 32.81 70.19 1964 31.78 29.27 26.67 40.4 183.96 271.86 295.97 135.39 100.44 110.78 94.93 76.77 116.52 1965 63.79 53.45 50.76 70.47 275.06 343.44 183.34 98.6 71.29 186.39 190.34 146.99 144.49 1966 118.83 97.19 84.85 126.11 382.22 364.97 174.18 86.07 54.42 38.19 32.73 35.26 132.92 1967 36 35.15 33.76 93.18 312.9 220.76 148.76 107.55 70.48 49.24 35.46 31.72 97.91 1968 30.39 26.28 26.02 74.22 263.87 428.81 451.06 227.99 132.22 143.6 196.81 119.03 176.69 1969 100.52 94.59 76.86 134.82 393.61 272.96 164.58 126.79 92.13 65.32 61.26 64.26 137.31 1970 58.82 51.54 47.1 59.04 294.88 442.78 291.59 123.21 69.74 90.49 218.33 202.91 162.54 1971 124.82 92.93 76.4 131.64 334.31 303.82 203.2 88.43 51.2 69.26 211.57 203.56 157.6 1972 126.4 93.35 73.16 75.35 284.89 219.99 145.51 159.58 116.51 79.27 63.35 53.8 124.26 1973 46.5 37.55 36.57 62 143.01 163.32 126.91 128.53 174.29 195.35 174.69 118.74 117.29 1974 88 69.58 57.14 74.01 277.61 375.01 238.5 118.51 134.11 109.15 106.23 97.86 145.48 1975 85.76 80.08 69.31 74.97 261.61 221.43 167.17 89.81 57.98 45.93 45.09 51.97 104.26 1976 56.93 54.01 51.08 136.78 308.03 161.23 140.73 88.03 40.21 23.63 17.68 16.06 91.2 1977 15.49 15.33 15.61 17.4 25.47 55.15 102.92 72.93 288.19 402.01 300.52 201.9 126.08 1978 129.35 91.73 64.33 62.41 154.69 315.47 224.53 148.23 134.98 102.32 70.69 50.71 129.12 1979 41.75 37.84 40.36 77.74 371.64 337.83 176.68 87.37 55.57 39.85 41.47 43.54 112.64 1980 44.03 40.98 37.56 42.48 66.96 57.19 42.78 32.3 48.66 131.2 94.59 76.76 59.62 1981 63.23 52.46 48.87 122.49 329.68 269.59 179.59 95.42 50.18 40.39 51.84 54.19 113.16 1982 47.82 43.6 42.27 60.79 244.73 258.78 195.68 152.21 88.43 132.4 206.13 196.43 139.11 1983 125.98 93.77 76.74 79.01 142.32 177.73 185.44 128.84 86.2 113.51 133.51 126.49 122.46 1984 100.79 79.95 65.5 86.91 240.9 253.22 193.1 98.84 54.34 35.94 32.27 38.89 106.72 1985 46.27 43.4 39.65 58.06 208.6 232.97 260.72 143.92 94.19 171.14 150.93 109.59 129.95 1986 83 66.3 58.42 114.14 317.38 233.11 145.39 95.78 81.86 81.89 68.2 65.82 117.61 1987 57.06 49.03 43.05 49.46 50.99 90.09 68.85 217.73 201.51 108.85 68.16 52.25 88.09 1988 45.47 42.5 43.06 60.19 107.24 116.02 85.69 161.5 372.15 169.17 114.16 126.06 120.27 1989 111.98 91.01 69.9 84.94 265.01 250.56 206.22 101.28 65.32 55.38 45.47 38.45 115.46 1990 35.19 33.71 36.46 62.39 303.65 242.37 246.74 132.06 62.77 43.54 43.08 48.2 107.51 1991 48.81 44.93 43.24 89.43 183.31 155.5 127.84 80.13 44.8 31.78 41.48 69.74 80.08 1992 71.3 60.08 51.96 67.05 259.9 258.97 175.04 122.15 135.1 122.61 80.99 64.95 122.51 1993 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 61.41 53.02 47.07 72.34 217.79 228.17 172.88 112.8 91.09 88.72 83.27 73.3 108.49 Std Dev 30.15 22.06 16.7 37.99 107.5 103.87 77.36 51.33 59.8 65.38 61.13 45.84 32.16