Country= U.S.A. Station= JACKSONVILLE, FLA. River= ST. JOHNS RIVER Area= 22920.14 Lat= 30.32 Lon= -81.66 Source= USGS PointID= 2246500 Area Units= km2 Discharge Units= m3/sec Starting Year= 1913 Ending Year= 1993 Total Years= 81 Total Usable Years= 74 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1913 1.58 1.47 1.44 4.54 5.32 9.99 6.42 1.5 2.1 4.21 3.89 1.98 3.7 1914 1.28 2.49 3.34 5.03 22.87 74.97 30.2 20.5 3.09 5.15 3.07 2.49 14.54 1915 1.57 0.81 3.29 7.79 17.63 53.89 10.16 21.77 4.72 5.69 3.01 0.89 10.93 1916 5.53 4.9 1.67 5.84 9.83 11.22 11.27 14.04 1.22 2.65 1.9 1.7 5.98 1917 1.05 0.5 1.44 2.32 10.82 13.64 15.97 6.19 2.06 2.56 4.83 1.76 5.26 1918 0.4 0.53 1.87 2.67 6 15.83 8.54 2.43 3.78 4.34 8.11 1.73 4.69 1919 0.45 0.47 0.57 1 4.86 8.78 6.97 4.49 7.18 0.93 3.15 2.08 3.41 1920 1.03 0.76 2.83 1.72 7.33 14.65 11.93 4.5 3.77 4.99 0.92 0.62 4.59 1921 1.3 0.3 0.84 3.71 10.67 289.51 64.38 45.66 5.21 6.88 3.58 1.64 36.14 1922 2.96 2.14 0.9 1.84 6.55 16.29 9.25 2.43 1.04 0.79 5.05 3.17 4.37 1923 1.66 1.32 2.07 1.23 6.88 11.2 21.66 63.3 26.25 21.11 4.71 6.21 13.97 1924 19.8 13.09 1.36 6.14 10.95 25.93 9.38 1.7 0.87 2.76 3.25 0.85 8.01 1925 0.33 0.2 1.6 1.18 5.89 8.41 17.46 4.57 2.86 4.8 4.31 0.92 4.38 1926 0.95 1.11 3.85 2.75 5.78 8.36 8.24 3.19 1.07 1.07 6.17 2.66 3.77 1927 0.66 1.16 3.37 2.85 9.6 16.89 22.09 29.58 5.19 8.21 7.81 2.09 9.13 1928 0.49 1.62 1.98 1.66 5.63 34.89 12.45 5.43 1.63 2.28 4.38 2.99 6.29 1929 0.72 1.84 1.23 0.86 5.73 13.68 13.67 42.67 6.13 7 2.73 2.1 8.2 1930 0.61 1.31 2.04 2.57 5.7 13.24 5.06 14.56 5.12 2.71 3.86 1.77 4.88 1931 0.43 0.57 1.29 2.38 6.96 5.78 2.12 1.34 1.37 0.54 0.74 1.39 2.08 1932 0.75 0.99 1.1 0.94 7.55 13.79 16 10.62 1.93 2.53 3.39 0.54 5.01 1933 0.53 2.58 0.71 1.96 26.02 26.1 8.99 6.78 3.71 1.06 1.69 3.28 6.95 1934 2.06 2.24 1.12 1.21 7.31 2.35 0.95 1.44 3.14 0.19 0.29 0.88 1.93 1935 0.93 0.58 0.7 0.64 18.9 19.71 15.35 6.18 4.91 4.01 4.77 3.88 6.71 1936 1.94 1.11 0.48 2.72 20.02 9.54 24.04 45.06 5.86 8.42 5.49 2.77 10.62 1937 1.38 1.4 1.48 4.58 14.82 13.73 4.88 3.04 10.29 0.71 1.57 2.94 5.07 1938 4.21 2.59 1.33 3.27 10.86 15.2 14.19 5.01 18.48 6.53 4.96 3.71 7.53 1939 3.55 2.2 2.55 2.93 14.59 13.67 2.24 3.42 1.64 0.96 0.34 0.99 4.09 1940 1.44 1.3 1.31 0.59 4.61 6.53 2.88 1.55 4.43 0.88 2.47 3.47 2.62 1941 2.81 1.36 3.64 2 5.05 10.54 6.81 9.04 2.16 8.06 9.44 7.25 5.68 1942 7.7 4.3 1.08 130.58 129.67 106.48 19.33 15.47 5.34 4.32 2.71 7.04 36.17 1943 15.13 3.18 8.36 2.38 6.11 17.11 9.57 8.52 3.47 3.95 3.96 2.18 6.99 1944 0.58 0.57 0.51 3.24 18.33 26.18 13.57 2.15 0.77 0.94 2.33 2.5 5.97 1945 2.37 2.01 1.12 1.05 1.91 12.78 12.29 30.8 1.6 2.63 1.54 1.49 5.97 1946 1.14 1.17 0.93 1.02 3.9 10.37 10.09 10.7 1.83 2.33 8.34 1.79 4.47 1947 1.55 1.41 1.81 0.83 39.95 90.28 54.75 3.99 3.35 7.21 4.45 2.96 17.71 1948 1.78 7.27 17.53 7.8 7.6 68.38 4.36 5.28 1.04 1.5 1.76 2.64 10.58 1949 3.29 3.22 1.96 1.7 2.55 29.28 23.18 2.32 2.3 1.91 1.65 2.71 6.34 1950 2.55 2.16 1.45 1.15 1.85 4.02 14.06 1.36 2.55 0.57 0.73 0.44 2.74 1951 1.09 0.67 0.91 0.93 1.88 11.84 13.28 8.29 1.09 1.02 1.52 0.86 3.62 1952 1.06 0.56 1.09 4.08 4.69 23.74 12.86 10.41 3.34 1.28 2.66 0.91 5.56 1953 0.62 1.19 1.2 0.76 3.09 17.74 10.06 6.33 1.15 1.06 1.56 0.88 3.8 1954 0.69 0.64 0.57 1.07 5.58 3.61 4.13 5.31 0.92 0.62 0.37 1 2.04 1955 1.11 1.02 0.7 1.21 53.78 2.04 2.64 7.53 1.72 0.44 0.89 0.9 6.17 1956 0.66 0.62 1.15 1.02 6.14 17.15 2.92 1.94 0.94 0.6 0.65 0.84 2.89 1957 0.77 0.67 0.42 5.66 26.5 33.88 89.88 21.37 2.31 3.96 1.61 6.99 16.17 1958 2.15 1.25 0.59 1.55 20.33 16.27 7.76 2.63 1.19 1.12 1.02 0.94 4.73 1959 0.57 1.26 1.13 1.27 2.34 4.21 2.56 2.11 1.19 3.51 1.21 0.98 1.86 1960 0.62 1.1 1.17 1.26 2.19 15.05 9.66 1.58 1.48 1.95 1.09 0.55 3.14 1961 0.54 0.41 0.56 1.06 5.05 7.8 8.07 13.27 12.91 10.31 1.96 0.79 5.23 1962 0.54 1.01 1.67 2.92 11.3 12.61 14.44 3.19 1.41 2.3 2.02 1.04 4.54 1963 0.47 0.76 0.89 0.64 5.57 4.06 2.89 4.71 3.84 0.96 1.27 0.67 2.23 1964 0.43 0.25 0.91 0.82 5.51 3.98 4.81 4.61 2.36 1.29 1.24 0.7 2.24 1965 0.69 0.85 0.73 2.25 8.88 82.49 27.08 65.52 3.01 5.27 5.87 5.93 17.38 1966 3.71 7.96 0.85 0.34 2.06 2.44 10.84 6.87 4.84 0.8 1.13 0.84 3.56 1967 0.46 0.81 0.74 0.91 5.72 3.58 3.6 1.89 2.1 2.16 2.11 1.27 2.11 1968 0.82 0.9 0.91 1.52 3.31 11.77 10.96 7.62 5.27 1.84 0.87 0.9 3.89 1969 0.66 0.79 0.79 0.82 10.27 4.5 11.04 9.02 4.17 2.08 0.72 0.89 3.81 1970 0.77 0.8 1.26 1.57 6.3 16.08 14.94 10.91 10.53 3.43 1.36 0.81 5.73 1971 3.42 1.14 1.18 2.7 3.92 13.15 11.71 3.26 3.08 3.05 1.03 0.77 4.03 1972 1.34 0.59 0.7 0.68 3.32 15.56 4.79 5.58 2.4 0.63 1.17 0.88 3.14 1973 0.65 0.3 0.84 0.87 5.19 7.89 16.08 7.14 2.66 4.68 0.89 0.78 4 1974 1.16 0.56 0.63 0.81 9.04 14.53 3 0.44 0.32 0.51 1.53 0.9 2.79 1975 0.82 1.05 1.04 0.72 1.89 18.75 20.34 6.89 1.69 0.89 2.58 0.38 4.75 1976 0.27 0.18 0.59 1.04 4.54 14.46 5.37 7.35 4.43 9.98 1.08 0.9 4.18 1977 5.55 1.73 0.79 3.99 1.35 3.44 3.07 4.2 0.27 0.25 1.18 1.12 2.25 1978 1.33 0.56 0.55 0.19 1.13 15.15 17.28 4.16 0.77 0.33 0.12 0.91 3.54 1979 1.64 3.14 1.13 1.21 6.09 18.04 18.32 6.42 2.21 2.31 1.3 2.77 5.38 1980 3.93 2.44 1.8 4.92 67.36 40.83 4.97 6.36 4.87 2.58 2.22 3.86 12.18 1981 3.58 2.34 1.76 0.6 0.62 7.38 2.27 6.37 2.84 1.31 1.61 2.88 2.8 1982 2.88 3.31 1.67 0.55 4.09 14.75 18.51 18.63 13.12 9.06 2.91 3.99 7.79 1983 4.94 3.37 3.79 2.39 4.33 38.73 36.79 6.55 3.1 8.02 1.85 4.66 9.88 1984 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1985 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 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 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1989 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1990 2.62 3.15 2.09 1.39 8.48 17.45 17.31 7.21 2.5 10.33 2.69 2.63 6.49 1991 2.87 6.09 2.38 1.27 3.89 18.83 13.56 10.38 4.47 2.33 3.88 2.39 6.03 1992 3.85 6.89 1.91 4.99 10.55 13.81 9.78 6.13 6.42 2.42 2.66 4.93 6.2 1993 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 2.13 1.87 1.72 3.9 11.26 23.12 13.68 10.33 3.84 3.41 2.66 2.11 6.67 Std Dev 2.97 2.08 2.18 14.92 17.64 37.1 13.82 13.09 4.07 3.4 2.01 1.64 6.06