Precipitation annual maximum series (inches) Station ID: 11-1160 Station name: CAHOKIA State: IL Latitude (decimal degrees): 38.5669 Longitude (decimal degrees): 90.1942 Elevation (feet): 400 Duration: 01d 8.48 1942 2.18 1943 1.79 1944 2.88 1945 7.71 1946 3.61 1947 3.13 1948 3.97 1949 3.30 1950 1.41 1951 1.74 1952 1.84 1953 3.56 1954 2.40 1955 2.80 1956 12.01 1957 1.75 1958 2.29 1959 1.43 1960 3.60 1961 -9.99 1962 2.86 1963 1.87 1964 1.84 1965 -9.99 1966 -9.99 1967 -9.99 1968 2.34 1969 2.15 1970 3.30 1971 2.40 1972 1.42 1973 2.00 1974 2.40 1975 1.75 1976 3.10 1977 1.56 1978 2.20 1979 2.10 1980 3.09 1981 -9.99 1982 -9.99 1983 1.81 1984 2.25 1985 2.25 1986 2.45 1987 1.90 1988 2.83 1989 4.37 1990 3.47 1991 2.30 1992 3.15 1993 3.00 1994 3.50 1995 3.00 1996 1.60 1997 4.27 1998 2.47 1999 2.67 2000 Duration: 02d 9.35 1942 3.89 1943 1.92 1944 3.54 1945 11.42 1946 4.90 1947 3.62 1948 3.97 1949 4.35 1950 2.17 1951 2.54 1952 1.87 1953 4.13 1954 2.63 1955 2.87 1956 12.01 1957 2.21 1958 3.42 1959 1.69 1960 6.70 1961 -9.99 1962 2.86 1963 2.24 1964 2.36 1965 -9.99 1966 -9.99 1967 -9.99 1968 3.23 1969 2.29 1970 3.67 1971 4.30 1972 2.26 1973 2.37 1974 2.50 1975 1.87 1976 3.44 1977 2.03 1978 3.90 1979 2.10 1980 3.93 1981 -9.99 1982 -9.99 1983 2.34 1984 3.07 1985 4.48 1986 3.56 1987 2.10 1988 2.96 1989 5.02 1990 4.14 1991 3.43 1992 3.64 1993 4.00 1994 6.10 1995 3.95 1996 1.82 1997 4.88 1998 2.47 1999 3.37 2000 Duration: 04d 9.60 1942 6.16 1943 2.58 1944 4.14 1945 15.34 1946 6.41 1947 3.62 1948 4.03 1949 4.69 1950 2.86 1951 2.54 1952 3.01 1953 4.14 1954 2.73 1955 3.09 1956 13.00 1957 3.46 1958 3.42 1959 3.29 1960 8.70 1961 -9.99 1962 2.90 1963 2.28 1964 2.37 1965 -9.99 1966 -9.99 1967 -9.99 1968 3.23 1969 3.05 1970 3.88 1971 5.05 1972 3.10 1973 3.55 1974 3.00 1975 2.59 1976 3.51 1977 2.59 1978 3.98 1979 2.10 1980 3.93 1981 -9.99 1982 -9.99 1983 3.37 1984 3.37 1985 6.07 1986 5.49 1987 2.55 1988 3.06 1989 5.45 1990 5.01 1991 4.01 1992 4.49 1993 5.30 1994 7.17 1995 4.19 1996 2.16 1997 4.92 1998 2.55 1999 3.95 2000 Duration: 07d 10.11 1942 7.30 1943 3.50 1944 5.71 1945 15.40 1946 6.44 1947 5.42 1948 6.22 1949 7.64 1950 3.77 1951 3.05 1952 3.01 1953 4.14 1954 3.00 1955 3.46 1956 13.00 1957 4.19 1958 5.22 1959 3.60 1960 9.39 1961 -9.99 1962 3.84 1963 2.35 1964 2.58 1965 -9.99 1966 -9.99 1967 -9.99 1968 5.27 1969 5.05 1970 6.67 1971 5.20 1972 3.64 1973 3.86 1974 3.52 1975 3.20 1976 3.66 1977 3.39 1978 4.62 1979 3.50 1980 4.53 1981 -9.99 1982 -9.99 1983 3.42 1984 5.77 1985 6.67 1986 7.18 1987 2.93 1988 3.31 1989 7.42 1990 5.01 1991 4.01 1992 5.54 1993 5.31 1994 7.97 1995 5.00 1996 3.06 1997 4.92 1998 3.85 1999 4.97 2000 Duration: 10d 10.12 1942 9.06 1943 4.14 1944 6.55 1945 15.99 1946 7.16 1947 6.29 1948 6.43 1949 7.73 1950 4.20 1951 3.43 1952 3.01 1953 4.14 1954 3.68 1955 3.86 1956 14.90 1957 4.19 1958 5.57 1959 4.10 1960 9.48 1961 -9.99 1962 3.84 1963 2.54 1964 2.94 1965 -9.99 1966 -9.99 1967 -9.99 1968 6.10 1969 5.31 1970 7.27 1971 5.38 1972 4.02 1973 3.86 1974 3.58 1975 3.20 1976 3.73 1977 3.39 1978 4.72 1979 3.53 1980 5.14 1981 -9.99 1982 -9.99 1983 3.43 1984 6.65 1985 6.79 1986 8.01 1987 4.06 1988 3.46 1989 8.01 1990 6.31 1991 4.67 1992 6.14 1993 5.58 1994 9.36 1995 7.00 1996 3.36 1997 6.16 1998 4.67 1999 6.57 2000 Duration: 20d 13.27 1942 11.31 1943 5.30 1944 8.86 1945 21.69 1946 8.71 1947 7.41 1948 8.22 1949 11.40 1950 7.08 1951 4.15 1952 3.66 1953 5.18 1954 5.76 1955 6.66 1956 16.40 1957 5.69 1958 6.55 1959 4.69 1960 10.99 1961 -9.99 1962 5.66 1963 3.16 1964 3.68 1965 -9.99 1966 -9.99 1967 -9.99 1968 9.27 1969 7.22 1970 8.15 1971 6.81 1972 5.39 1973 5.65 1974 5.64 1975 4.20 1976 6.26 1977 5.52 1978 6.02 1979 5.13 1980 7.43 1981 -9.99 1982 -9.99 1983 4.56 1984 8.40 1985 8.97 1986 9.45 1987 6.07 1988 5.68 1989 9.99 1990 6.81 1991 6.50 1992 7.56 1993 9.44 1994 11.91 1995 8.48 1996 4.31 1997 8.48 1998 5.57 1999 8.00 2000 Duration: 30d 15.81 1942 12.51 1943 6.04 1944 10.90 1945 23.17 1946 9.31 1947 10.49 1948 9.92 1949 12.74 1950 9.55 1951 5.91 1952 4.66 1953 7.49 1954 6.14 1955 9.69 1956 22.62 1957 6.48 1958 6.81 1959 5.39 1960 12.19 1961 -9.99 1962 6.61 1963 3.88 1964 4.76 1965 -9.99 1966 -9.99 1967 -9.99 1968 11.69 1969 8.34 1970 8.60 1971 7.98 1972 6.94 1973 6.34 1974 6.64 1975 5.34 1976 8.98 1977 6.53 1978 7.23 1979 6.46 1980 9.07 1981 -9.99 1982 -9.99 1983 5.32 1984 10.53 1985 10.04 1986 11.28 1987 6.89 1988 6.74 1989 13.85 1990 7.92 1991 7.87 1992 9.39 1993 11.26 1994 14.22 1995 9.44 1996 5.94 1997 11.92 1998 7.34 1999 9.64 2000 Duration: 45d 19.60 1942 15.37 1943 7.50 1944 13.46 1945 24.03 1946 9.93 1947 13.02 1948 12.00 1949 13.50 1950 11.67 1951 8.22 1952 6.52 1953 8.62 1954 8.29 1955 12.39 1956 25.83 1957 9.76 1958 7.43 1959 7.57 1960 14.43 1961 -9.99 1962 7.86 1963 5.09 1964 6.39 1965 -9.99 1966 -9.99 1967 -9.99 1968 13.22 1969 9.81 1970 9.75 1971 9.34 1972 9.55 1973 8.25 1974 9.07 1975 5.66 1976 12.32 1977 7.09 1978 9.01 1979 8.91 1980 11.63 1981 -9.99 1982 -9.99 1983 6.94 1984 12.41 1985 11.76 1986 13.60 1987 8.32 1988 7.37 1989 16.63 1990 9.11 1991 9.89 1992 12.01 1993 13.26 1994 16.89 1995 10.78 1996 7.47 1997 13.03 1998 8.85 1999 13.24 2000 Duration: 60d 21.36 1942 17.77 1943 8.01 1944 16.96 1945 24.90 1946 11.10 1947 14.37 1948 12.20 1949 14.31 1950 12.31 1951 8.91 1952 7.92 1953 9.24 1954 9.50 1955 13.67 1956 28.71 1957 11.40 1958 8.26 1959 10.01 1960 15.81 1961 -9.99 1962 9.61 1963 5.64 1964 7.76 1965 -9.99 1966 -9.99 1967 -9.99 1968 14.71 1969 11.35 1970 9.75 1971 11.64 1972 11.77 1973 10.66 1974 11.00 1975 6.90 1976 14.87 1977 8.88 1978 10.10 1979 10.38 1980 12.93 1981 -9.99 1982 -9.99 1983 9.15 1984 13.36 1985 13.59 1986 16.67 1987 10.31 1988 8.64 1989 19.25 1990 12.40 1991 11.30 1992 13.84 1993 14.21 1994 18.82 1995 13.70 1996 9.23 1997 17.40 1998 10.36 1999 17.99 2000