Precipitation annual maximum series (inches) Station ID: 11-3455 Station name: GLADSTONE DAM 18 State: IL Latitude (decimal degrees): 40.8825 Longitude (decimal degrees): 91.0242 Elevation (feet): 538 Duration: 01d 2.04 1938 3.57 1939 1.42 1940 3.10 1941 1.98 1942 2.50 1943 3.50 1944 2.31 1945 4.07 1946 3.95 1947 5.52 1948 1.44 1949 3.49 1950 2.00 1951 2.53 1952 1.18 1953 2.84 1954 2.00 1955 2.95 1956 2.72 1957 2.49 1958 2.67 1959 1.79 1960 4.15 1961 2.50 1962 2.69 1963 2.05 1964 3.80 1965 2.13 1966 2.05 1967 2.21 1968 2.83 1969 3.43 1970 2.20 1971 1.94 1972 2.85 1973 1.82 1974 2.18 1975 3.10 1976 1.77 1977 1.80 1978 1.58 1979 3.18 1980 2.16 1981 3.26 1982 3.07 1983 3.22 1984 2.47 1985 -9.99 1986 -9.99 1987 2.69 1988 2.69 1989 3.29 1990 1.84 1991 1.99 1992 2.30 1993 1.52 1994 1.51 1995 2.50 1996 2.00 1997 2.52 1998 1.96 1999 1.84 2000 Duration: 02d 2.59 1938 4.05 1939 1.47 1940 3.10 1941 2.12 1942 2.62 1943 3.89 1944 2.65 1945 4.39 1946 4.11 1947 5.99 1948 1.73 1949 5.59 1950 2.50 1951 2.98 1952 1.74 1953 2.84 1954 2.36 1955 3.17 1956 3.17 1957 2.58 1958 4.34 1959 2.67 1960 6.06 1961 2.52 1962 3.05 1963 2.75 1964 3.95 1965 2.32 1966 2.24 1967 2.22 1968 3.37 1969 3.78 1970 2.20 1971 2.24 1972 4.47 1973 1.82 1974 2.43 1975 3.86 1976 2.90 1977 2.12 1978 1.65 1979 6.13 1980 2.95 1981 4.63 1982 3.11 1983 3.55 1984 2.47 1985 -9.99 1986 -9.99 1987 2.69 1988 2.69 1989 5.08 1990 2.59 1991 2.27 1992 3.05 1993 1.71 1994 2.86 1995 3.59 1996 2.70 1997 3.34 1998 2.72 1999 3.46 2000 Duration: 04d 2.62 1938 4.05 1939 1.59 1940 4.59 1941 2.14 1942 3.27 1943 3.97 1944 3.74 1945 4.39 1946 4.11 1947 6.01 1948 1.83 1949 5.84 1950 2.61 1951 2.98 1952 2.10 1953 3.28 1954 2.69 1955 3.18 1956 3.21 1957 2.58 1958 5.40 1959 3.42 1960 6.76 1961 2.81 1962 3.05 1963 3.04 1964 3.97 1965 3.43 1966 2.46 1967 3.06 1968 6.46 1969 4.17 1970 2.20 1971 2.81 1972 4.84 1973 2.85 1974 2.43 1975 4.55 1976 4.04 1977 2.74 1978 1.85 1979 6.45 1980 4.19 1981 4.93 1982 4.60 1983 3.58 1984 2.63 1985 -9.99 1986 -9.99 1987 2.69 1988 3.20 1989 5.90 1990 3.33 1991 2.86 1992 4.07 1993 1.92 1994 3.18 1995 4.16 1996 3.04 1997 3.35 1998 2.88 1999 3.65 2000 Duration: 07d 3.31 1938 5.02 1939 2.13 1940 8.06 1941 3.06 1942 3.71 1943 4.22 1944 3.75 1945 6.86 1946 4.11 1947 6.08 1948 1.95 1949 6.06 1950 2.86 1951 4.55 1952 2.49 1953 4.37 1954 3.10 1955 5.30 1956 3.47 1957 4.31 1958 5.77 1959 3.62 1960 6.76 1961 3.45 1962 3.30 1963 3.15 1964 7.59 1965 3.75 1966 3.09 1967 4.71 1968 6.61 1969 4.27 1970 2.86 1971 3.30 1972 5.62 1973 3.32 1974 2.90 1975 5.20 1976 5.18 1977 3.18 1978 2.31 1979 7.60 1980 4.47 1981 5.94 1982 5.48 1983 4.37 1984 2.76 1985 -9.99 1986 -9.99 1987 3.84 1988 3.33 1989 7.89 1990 3.33 1991 3.98 1992 4.34 1993 2.95 1994 3.47 1995 4.44 1996 4.01 1997 3.41 1998 3.46 1999 4.59 2000 Duration: 10d 3.68 1938 6.20 1939 2.35 1940 8.55 1941 3.35 1942 3.71 1943 4.22 1944 5.39 1945 7.43 1946 4.26 1947 6.57 1948 2.48 1949 6.06 1950 2.97 1951 4.69 1952 2.63 1953 4.52 1954 4.28 1955 5.30 1956 4.45 1957 4.69 1958 7.79 1959 4.10 1960 6.76 1961 3.45 1962 3.99 1963 4.14 1964 7.79 1965 3.75 1966 4.74 1967 5.50 1968 6.66 1969 5.38 1970 2.96 1971 4.39 1972 6.12 1973 4.65 1974 4.53 1975 5.26 1976 6.53 1977 3.96 1978 2.92 1979 8.07 1980 5.02 1981 6.91 1982 5.67 1983 4.57 1984 4.16 1985 -9.99 1986 -9.99 1987 4.16 1988 3.90 1989 8.72 1990 3.33 1991 4.38 1992 5.70 1993 3.21 1994 3.65 1995 4.98 1996 4.21 1997 4.12 1998 3.65 1999 4.78 2000 Duration: 20d 4.59 1938 7.71 1939 3.03 1940 11.52 1941 5.16 1942 5.38 1943 6.37 1944 6.51 1945 9.13 1946 6.98 1947 10.15 1948 3.60 1949 7.48 1950 5.11 1951 5.32 1952 3.11 1953 6.51 1954 6.05 1955 6.04 1956 4.68 1957 7.04 1958 11.33 1959 6.60 1960 10.17 1961 5.62 1962 5.21 1963 5.95 1964 9.42 1965 4.98 1966 5.52 1967 6.94 1968 7.59 1969 8.33 1970 3.94 1971 5.02 1972 7.85 1973 7.68 1974 6.48 1975 6.87 1976 7.65 1977 4.87 1978 3.68 1979 12.01 1980 6.81 1981 11.53 1982 6.86 1983 8.76 1984 5.52 1985 -9.99 1986 -9.99 1987 6.46 1988 5.88 1989 9.56 1990 3.79 1991 6.39 1992 8.21 1993 4.06 1994 5.27 1995 8.94 1996 5.70 1997 6.56 1998 5.21 1999 6.97 2000 Duration: 30d 7.45 1938 8.73 1939 4.60 1940 13.60 1941 6.92 1942 8.02 1943 7.63 1944 8.09 1945 9.13 1946 9.35 1947 10.80 1948 4.63 1949 8.57 1950 6.09 1951 6.47 1952 4.14 1953 8.05 1954 6.18 1955 6.73 1956 6.17 1957 9.51 1958 12.30 1959 8.47 1960 10.43 1961 6.12 1962 6.88 1963 7.24 1964 12.85 1965 6.51 1966 7.09 1967 8.16 1968 8.04 1969 9.50 1970 5.39 1971 6.97 1972 10.45 1973 10.24 1974 8.26 1975 8.12 1976 9.07 1977 6.86 1978 5.73 1979 14.80 1980 9.23 1981 12.65 1982 7.85 1983 9.34 1984 6.98 1985 -9.99 1986 -9.99 1987 7.08 1988 6.70 1989 11.55 1990 6.50 1991 8.80 1992 12.09 1993 5.80 1994 6.87 1995 10.90 1996 7.45 1997 7.88 1998 6.12 1999 9.45 2000 Duration: 45d 10.38 1938 9.90 1939 5.70 1940 16.30 1941 8.93 1942 10.71 1943 9.67 1944 10.99 1945 10.43 1946 13.48 1947 14.66 1948 5.88 1949 10.35 1950 8.51 1951 9.22 1952 5.20 1953 8.85 1954 8.81 1955 9.73 1956 7.16 1957 10.78 1958 12.95 1959 10.31 1960 11.76 1961 7.53 1962 8.67 1963 8.63 1964 13.95 1965 8.36 1966 9.28 1967 8.40 1968 10.02 1969 12.44 1970 5.88 1971 8.76 1972 12.65 1973 14.21 1974 10.60 1975 8.52 1976 11.92 1977 8.96 1978 7.79 1979 18.56 1980 11.54 1981 15.41 1982 10.69 1983 11.57 1984 10.14 1985 -9.99 1986 -9.99 1987 8.13 1988 7.10 1989 15.07 1990 6.95 1991 10.46 1992 15.92 1993 7.91 1994 9.14 1995 12.72 1996 9.29 1997 11.28 1998 8.36 1999 11.37 2000 Duration: 60d 13.59 1938 13.16 1939 6.21 1940 19.55 1941 10.17 1942 12.90 1943 11.94 1944 14.93 1945 15.72 1946 15.84 1947 15.07 1948 7.55 1949 15.58 1950 9.86 1951 11.12 1952 6.17 1953 10.68 1954 11.14 1955 10.81 1956 8.89 1957 13.36 1958 13.39 1959 12.52 1960 14.69 1961 7.75 1962 10.66 1963 9.98 1964 14.76 1965 10.88 1966 10.37 1967 10.73 1968 11.66 1969 16.72 1970 7.35 1971 11.11 1972 15.29 1973 16.51 1974 13.01 1975 9.78 1976 13.25 1977 11.09 1978 9.06 1979 21.63 1980 14.82 1981 19.34 1982 12.28 1983 13.70 1984 12.56 1985 -9.99 1986 -9.99 1987 9.12 1988 9.62 1989 17.53 1990 8.86 1991 10.75 1992 20.73 1993 8.32 1994 12.00 1995 13.89 1996 10.72 1997 14.21 1998 11.62 1999 12.67 2000