Precipitation annual maximum series (inches) Station ID: 11-4355 Station name: ILLINOIS CITY DAM 16 State: IL Latitude (decimal degrees): 41.4317 Longitude (decimal degrees): 91.0153 Elevation (feet): 550 Duration: 01d 1.28 1940 1.29 1941 3.62 1942 3.09 1943 1.83 1944 1.38 1945 2.58 1946 4.05 1947 3.01 1948 2.59 1949 2.30 1950 1.80 1951 2.72 1952 1.61 1953 2.75 1954 2.16 1955 1.98 1956 1.49 1957 1.93 1958 1.83 1959 1.87 1960 3.18 1961 3.35 1962 1.97 1963 2.45 1964 6.59 1965 2.28 1966 8.10 1967 1.74 1968 1.71 1969 4.33 1970 4.56 1971 3.02 1972 3.19 1973 1.50 1974 1.45 1975 3.47 1976 3.02 1977 1.35 1978 2.27 1979 2.55 1980 1.98 1981 3.85 1982 2.45 1983 3.13 1984 2.43 1985 -9.99 1986 -9.99 1987 2.20 1988 2.12 1989 4.80 1990 1.80 1991 2.50 1992 3.01 1993 1.43 1994 1.74 1995 3.75 1996 1.65 1997 2.55 1998 2.81 1999 3.05 2000 Duration: 01h 07/21/1948 1.13 07/29/1949 1.50 07/01/1950 1.23 07/08/1951 0.96 11/16/1952 1.33 07/04/1953 1.29 06/15/1954 1.20 04/19/1955 1.30 08/01/1956 1.49 05/12/1957 0.91 05/31/1958 0.80 05/20/1959 0.83 04/14/1960 0.58 06/30/1961 1.79 10/19/1962 1.81 07/01/1963 1.02 08/20/1964 1.99 04/24/1965 2.43 10/14/1966 0.90 07/21/1967 2.20 05/15/1968 0.60 -9/-9/-999 -9.99 09/21/1970 3.20 07/10/1971 1.80 08/05/1972 1.00 -9/-9/-999 -9.99 06/22/1974 0.90 08/20/1975 1.00 07/20/1976 1.60 07/18/1977 1.20 07/06/1978 0.80 07/13/1979 1.50 08/04/1980 2.00 06/29/1981 1.20 08/07/1982 2.20 08/22/1983 2.30 05/25/1984 0.80 05/11/1985 1.50 06/30/1986 1.50 06/20/1987 0.90 03/28/1988 0.50 09/06/1989 1.20 -9/-9/-999 -9.99 05/31/1991 0.70 07/07/1992 1.30 06/08/1993 0.90 04/15/1994 0.90 08/09/1995 1.10 09/11/1996 1.40 08/26/1997 0.90 06/29/1998 1.20 07/23/1999 1.30 06/24/2000 1.10 Duration: 02d 1.40 1940 1.50 1941 3.68 1942 3.09 1943 2.29 1944 2.33 1945 2.83 1946 4.13 1947 3.23 1948 3.29 1949 2.99 1950 2.96 1951 3.64 1952 2.25 1953 4.95 1954 2.16 1955 3.02 1956 2.01 1957 2.00 1958 2.14 1959 3.01 1960 6.04 1961 3.38 1962 2.09 1963 2.70 1964 7.38 1965 2.67 1966 9.16 1967 2.00 1968 2.19 1969 4.38 1970 4.76 1971 3.32 1972 3.81 1973 2.92 1974 1.49 1975 3.62 1976 3.90 1977 1.70 1978 2.27 1979 3.10 1980 3.31 1981 4.55 1982 2.45 1983 3.26 1984 2.58 1985 -9.99 1986 -9.99 1987 2.20 1988 3.32 1989 4.89 1990 2.20 1991 2.90 1992 4.04 1993 1.49 1994 2.15 1995 5.26 1996 2.24 1997 3.66 1998 3.41 1999 3.60 2000 Duration: 02h 07/21/1948 2.09 07/29/1949 2.26 06/18/1950 1.65 07/08/1951 1.20 11/16/1952 1.37 07/04/1953 1.38 10/09/1954 1.90 04/19/1955 1.37 08/01/1956 1.78 05/12/1957 0.99 07/30/1958 1.30 09/26/1959 1.20 06/04/1960 0.84 06/30/1961 3.30 10/19/1962 2.79 07/19/1963 1.40 08/20/1964 2.17 04/24/1965 3.45 10/14/1966 1.10 07/21/1967 2.20 09/24/1968 1.00 -9/-9/-999 -9.99 09/21/1970 3.30 07/10/1971 3.30 08/05/1972 1.60 -9/-9/-999 -9.99 06/22/1974 1.10 08/20/1975 1.30 07/20/1976 1.80 07/18/1977 2.40 07/19/1978 1.20 07/03/1979 2.00 08/04/1980 2.10 09/26/1981 1.60 07/18/1982 3.20 08/22/1983 2.40 05/25/1984 1.20 05/11/1985 2.00 06/30/1986 1.90 05/20/1987 1.30 09/28/1988 0.70 09/06/1989 1.70 -9/-9/-999 -9.99 09/03/1991 0.90 07/07/1992 1.70 07/22/1993 1.50 04/15/1994 1.10 08/09/1995 1.70 05/09/1996 1.50 08/16/1997 1.10 07/21/1998 1.50 07/23/1999 1.40 06/24/2000 1.80 Duration: 03h 07/21/1948 3.03 07/29/1949 2.59 06/18/1950 2.00 07/08/1951 1.20 11/16/1952 1.46 07/04/1953 1.38 10/09/1954 2.02 04/19/1955 1.40 08/01/1956 1.92 05/12/1957 0.99 07/30/1958 1.46 09/26/1959 1.24 04/14/1960 1.07 06/30/1961 4.39 10/19/1962 2.80 07/19/1963 1.91 08/20/1964 2.18 04/24/1965 4.12 07/05/1966 1.20 07/21/1967 2.20 09/24/1968 1.20 -9/-9/-999 -9.99 09/21/1970 3.50 07/10/1971 4.40 08/05/1972 2.50 -9/-9/-999 -9.99 06/22/1974 1.30 08/20/1975 1.40 07/20/1976 2.00 07/18/1977 2.50 07/19/1978 1.20 07/03/1979 2.00 08/04/1980 2.20 09/26/1981 1.90 08/07/1982 3.60 08/22/1983 2.50 05/25/1984 1.40 05/11/1985 2.30 06/29/1986 2.10 05/20/1987 1.60 08/22/1988 0.90 09/06/1989 2.00 -9/-9/-999 -9.99 11/29/1991 1.20 07/07/1992 1.90 07/22/1993 1.70 04/15/1994 1.20 08/09/1995 1.70 05/09/1996 2.10 08/16/1997 1.20 07/21/1998 1.50 07/23/1999 1.50 06/24/2000 2.60 Duration: 04d 1.74 1940 2.40 1941 3.70 1942 3.77 1943 2.51 1944 2.64 1945 3.22 1946 4.13 1947 3.23 1948 3.29 1949 3.66 1950 3.56 1951 3.64 1952 2.25 1953 4.96 1954 2.31 1955 3.32 1956 2.64 1957 2.85 1958 3.65 1959 3.49 1960 6.10 1961 3.43 1962 2.58 1963 3.45 1964 7.41 1965 4.03 1966 9.78 1967 2.94 1968 3.09 1969 5.72 1970 4.91 1971 4.31 1972 4.96 1973 2.97 1974 2.19 1975 3.76 1976 5.55 1977 2.32 1978 2.28 1979 3.22 1980 4.67 1981 5.48 1982 2.57 1983 5.14 1984 4.43 1985 -9.99 1986 -9.99 1987 2.51 1988 4.86 1989 6.69 1990 2.37 1991 3.50 1992 4.50 1993 1.96 1994 2.82 1995 5.65 1996 2.72 1997 3.66 1998 3.76 1999 3.92 2000 Duration: 06h 07/20/1948 3.20 07/29/1949 2.68 06/18/1950 2.39 11/13/1951 1.98 07/17/1952 1.60 07/04/1953 1.38 10/09/1954 2.18 04/19/1955 2.22 08/01/1956 1.99 04/03/1957 1.15 07/30/1958 1.81 09/26/1959 1.79 06/04/1960 1.72 06/30/1961 4.45 10/19/1962 2.87 07/18/1963 1.93 08/20/1964 2.20 04/24/1965 5.69 07/05/1966 1.30 07/21/1967 2.20 09/23/1968 1.40 -9/-9/-999 -9.99 09/21/1970 3.80 07/10/1971 4.80 08/05/1972 2.90 -9/-9/-999 -9.99 05/17/1974 1.50 08/20/1975 1.50 07/15/1976 2.70 06/30/1977 3.20 07/19/1978 1.40 07/03/1979 2.10 06/13/1980 2.30 09/26/1981 2.80 07/18/1982 4.00 08/22/1983 2.50 08/01/1984 2.01 05/11/1985 2.30 06/29/1986 2.20 08/25/1987 2.20 08/22/1988 1.60 09/06/1989 2.00 -9/-9/-999 -9.99 11/29/1991 1.50 07/07/1992 2.00 07/22/1993 1.70 04/14/1994 1.30 08/09/1995 1.70 05/09/1996 3.20 08/16/1997 1.60 07/21/1998 2.10 09/27/1999 1.90 06/24/2000 3.40 Duration: 07d 3.13 1940 4.52 1941 4.05 1942 4.05 1943 2.81 1944 2.97 1945 3.84 1946 4.13 1947 4.65 1948 3.40 1949 5.63 1950 3.56 1951 4.51 1952 3.20 1953 6.96 1954 4.17 1955 3.36 1956 3.08 1957 3.09 1958 5.04 1959 3.69 1960 6.10 1961 3.54 1962 3.29 1963 4.03 1964 7.95 1965 4.32 1966 11.24 1967 4.07 1968 3.38 1969 6.02 1970 5.08 1971 5.03 1972 5.96 1973 4.05 1974 2.63 1975 5.32 1976 6.66 1977 2.54 1978 2.82 1979 4.37 1980 4.81 1981 5.74 1982 3.20 1983 6.08 1984 4.89 1985 -9.99 1986 -9.99 1987 3.79 1988 5.13 1989 7.84 1990 2.51 1991 4.54 1992 6.74 1993 2.39 1994 3.43 1995 5.75 1996 4.22 1997 3.88 1998 3.84 1999 4.19 2000 Duration: 10d 3.35 1940 5.34 1941 4.16 1942 4.53 1943 3.52 1944 3.75 1945 4.93 1946 4.53 1947 5.13 1948 3.91 1949 5.63 1950 3.66 1951 4.83 1952 3.56 1953 7.43 1954 4.17 1955 3.61 1956 3.21 1957 3.75 1958 5.08 1959 4.22 1960 6.10 1961 3.54 1962 3.59 1963 5.00 1964 7.95 1965 4.32 1966 11.34 1967 5.01 1968 4.59 1969 7.82 1970 5.25 1971 5.16 1972 6.37 1973 5.18 1974 3.43 1975 5.67 1976 7.05 1977 3.83 1978 3.02 1979 4.75 1980 5.57 1981 6.08 1982 3.38 1983 6.28 1984 5.33 1985 -9.99 1986 -9.99 1987 4.37 1988 6.77 1989 9.16 1990 3.17 1991 5.39 1992 8.17 1993 2.47 1994 3.65 1995 6.12 1996 4.49 1997 4.16 1998 4.76 1999 5.34 2000 Duration: 12h 07/20/1948 3.20 07/29/1949 3.14 06/18/1950 2.40 11/13/1951 3.05 11/16/1952 2.45 02/19/1953 1.46 10/09/1954 3.40 04/19/1955 2.22 08/01/1956 1.99 04/03/1957 1.54 07/29/1958 1.96 10/06/1959 1.91 10/30/1960 1.82 06/30/1961 4.45 10/19/1962 3.20 07/18/1963 1.99 08/20/1964 2.20 04/24/1965 5.89 10/12/1966 2.00 07/21/1967 2.20 09/23/1968 1.40 -9/-9/-999 -9.99 09/21/1970 4.40 07/10/1971 4.80 08/05/1972 3.10 -9/-9/-999 -9.99 05/17/1974 1.60 08/20/1975 1.50 03/04/1976 3.50 06/30/1977 3.20 07/19/1978 1.50 07/03/1979 2.10 06/13/1980 2.30 09/26/1981 2.80 07/18/1982 4.60 08/22/1983 2.50 08/01/1984 4.03 05/11/1985 2.30 06/29/1986 2.20 08/25/1987 2.50 08/22/1988 2.10 09/06/1989 3.10 -9/-9/-999 -9.99 10/04/1991 1.60 09/09/1992 3.00 06/24/1993 2.00 04/14/1994 1.40 05/07/1995 1.70 05/09/1996 3.60 08/16/1997 1.90 09/13/1998 3.20 09/27/1999 2.70 06/24/2000 3.70 Duration: 20d 4.47 1940 6.87 1941 4.72 1942 7.01 1943 6.08 1944 5.40 1945 6.92 1946 6.58 1947 6.17 1948 5.36 1949 8.15 1950 5.70 1951 6.04 1952 4.09 1953 9.10 1954 6.14 1955 4.63 1956 4.81 1957 6.54 1958 9.10 1959 5.67 1960 8.55 1961 6.44 1962 5.64 1963 5.18 1964 10.73 1965 4.86 1966 12.25 1967 6.04 1968 7.43 1969 9.59 1970 6.37 1971 6.44 1972 8.72 1973 7.08 1974 5.31 1975 6.29 1976 9.32 1977 5.40 1978 4.04 1979 7.15 1980 7.87 1981 8.76 1982 4.46 1983 9.28 1984 7.54 1985 -9.99 1986 -9.99 1987 5.25 1988 8.54 1989 12.51 1990 4.28 1991 7.81 1992 10.13 1993 4.54 1994 6.01 1995 9.73 1996 6.65 1997 6.48 1998 5.62 1999 7.76 2000 Duration: 24h 07/20/1948 3.43 07/29/1949 3.35 06/18/1950 2.86 11/13/1951 3.07 07/17/1952 3.39 07/04/1953 2.51 10/09/1954 4.82 04/19/1955 2.22 07/31/1956 2.79 04/03/1957 1.64 07/29/1958 1.96 10/06/1959 1.96 10/30/1960 2.74 09/12/1961 4.90 10/19/1962 3.39 07/18/1963 2.00 06/14/1964 2.68 04/24/1965 6.29 10/12/1966 2.30 07/20/1967 2.90 09/23/1968 1.90 -9/-9/-999 -9.99 09/21/1970 4.60 07/10/1971 4.80 08/05/1972 3.40 -9/-9/-999 -9.99 05/17/1974 1.70 08/20/1975 1.50 03/04/1976 3.60 06/30/1977 3.20 07/19/1978 1.50 07/03/1979 2.30 06/13/1980 2.60 09/25/1981 3.40 07/18/1982 4.70 08/22/1983 2.50 08/01/1984 4.77 05/11/1985 2.50 07/08/1986 2.50 08/25/1987 4.40 08/22/1988 2.10 09/05/1989 3.20 -9/-9/-999 -9.99 11/29/1991 2.10 09/09/1992 3.00 07/22/1993 2.70 04/14/1994 1.40 05/22/1995 2.00 05/09/1996 4.60 08/16/1997 1.90 09/13/1998 3.80 09/27/1999 3.30 06/23/2000 4.00 Duration: 30d 5.54 1940 8.77 1941 5.54 1942 9.22 1943 6.28 1944 6.02 1945 6.96 1946 9.24 1947 8.08 1948 7.53 1949 8.59 1950 6.92 1951 8.74 1952 5.08 1953 9.16 1954 7.02 1955 5.12 1956 5.96 1957 8.18 1958 9.23 1959 7.87 1960 9.11 1961 6.90 1962 6.22 1963 6.25 1964 11.88 1965 6.73 1966 13.80 1967 7.55 1968 8.35 1969 10.28 1970 6.82 1971 8.46 1972 11.13 1973 9.06 1974 7.04 1975 7.31 1976 12.80 1977 6.73 1978 5.62 1979 10.34 1980 9.86 1981 12.51 1982 7.41 1983 9.82 1984 9.83 1985 -9.99 1986 -9.99 1987 5.42 1988 9.39 1989 14.58 1990 5.88 1991 10.27 1992 14.36 1993 5.23 1994 8.19 1995 11.87 1996 8.48 1997 8.59 1998 6.24 1999 10.29 2000 Duration: 45d 6.95 1940 10.79 1941 8.51 1942 11.11 1943 9.27 1944 7.24 1945 8.44 1946 12.50 1947 9.16 1948 8.78 1949 10.61 1950 9.88 1951 10.89 1952 6.69 1953 9.63 1954 7.85 1955 6.41 1956 8.14 1957 9.97 1958 10.56 1959 10.19 1960 10.82 1961 8.00 1962 7.35 1963 6.94 1964 14.62 1965 8.82 1966 16.81 1967 8.62 1968 10.92 1969 11.70 1970 7.22 1971 9.54 1972 13.07 1973 12.30 1974 8.13 1975 8.67 1976 15.57 1977 8.30 1978 6.52 1979 12.80 1980 11.57 1981 16.17 1982 8.29 1983 10.23 1984 13.08 1985 -9.99 1986 -9.99 1987 6.14 1988 9.84 1989 17.33 1990 7.57 1991 10.84 1992 18.89 1993 6.49 1994 10.79 1995 13.28 1996 11.18 1997 11.67 1998 7.84 1999 12.63 2000 Duration: 48h 07/20/1948 3.44 07/29/1949 3.35 04/23/1950 3.78 11/12/1951 3.67 07/17/1952 3.50 07/04/1953 2.51 10/09/1954 4.85 04/19/1955 2.22 07/31/1956 3.04 12/18/1957 1.98 06/08/1958 2.03 10/04/1959 3.15 10/29/1960 3.22 09/12/1961 6.01 10/19/1962 3.39 07/17/1963 2.35 06/13/1964 2.74 04/23/1965 6.72 10/12/1966 3.40 07/20/1967 3.40 09/16/1968 2.30 -9/-9/-999 -9.99 09/21/1970 5.20 07/09/1971 5.00 08/05/1972 3.40 -9/-9/-999 -9.99 05/16/1974 3.00 08/20/1975 1.50 03/02/1976 3.60 06/30/1977 3.20 09/16/1978 1.70 07/03/1979 2.30 06/13/1980 3.10 09/24/1981 4.80 07/18/1982 4.70 08/22/1983 2.50 08/01/1984 4.93 10/08/1985 2.70 05/15/1986 2.80 08/25/1987 5.40 08/22/1988 2.10 09/05/1989 3.50 -9/-9/-999 -9.99 11/28/1991 2.30 09/07/1992 3.60 07/22/1993 3.20 04/14/1994 1.40 04/08/1995 2.20 05/08/1996 5.40 08/29/1997 2.20 09/13/1998 3.80 09/26/1999 3.80 06/23/2000 4.20 Duration: 60d 7.05 1940 13.39 1941 10.34 1942 15.22 1943 11.41 1944 10.08 1945 11.35 1946 14.16 1947 9.51 1948 11.95 1949 13.26 1950 12.63 1951 11.96 1952 8.65 1953 14.54 1954 9.73 1955 7.60 1956 9.37 1957 13.54 1958 11.44 1959 13.12 1960 14.09 1961 9.13 1962 9.80 1963 8.84 1964 17.77 1965 11.85 1966 19.87 1967 9.15 1968 12.88 1969 14.38 1970 8.59 1971 12.17 1972 15.22 1973 14.15 1974 9.41 1975 10.85 1976 18.33 1977 8.84 1978 8.71 1979 14.49 1980 11.99 1981 18.01 1982 9.21 1983 12.56 1984 15.74 1985 -9.99 1986 -9.99 1987 6.94 1988 10.53 1989 20.60 1990 9.49 1991 12.35 1992 25.73 1993 7.77 1994 14.09 1995 14.46 1996 11.20 1997 14.04 1998 9.60 1999 15.37 2000