Precipitation annual maximum series (inches) Station ID: 97-0498 Station name: COGSWELL DAM State: CA Latitude (decimal degrees): 34.2436 Longitude (decimal degrees): -117.9597 Elevation (feet): 2300 Duration: 1 days 02/09/1932 4.82 01/19/1933 8.99 01/01/1934 7.95 04/08/1935 4.70 02/02/1936 3.10 12/27/1936 5.26 03/02/1938 13.42 09/25/1939 7.76 01/08/1940 4.18 03/04/1941 6.48 12/10/1941 3.74 01/22/1943 16.70 02/22/1944 14.00 11/11/1944 3.49 03/30/1946 8.22 11/13/1946 6.14 04/29/1948 3.02 12/17/1948 2.30 12/18/1949 3.34 04/25/1951 1.33 01/16/1952 6.15 12/20/1952 2.55 01/19/1954 4.87 11/11/1954 2.98 01/26/1956 6.29 01/13/1957 4.43 02/04/1958 4.68 01/06/1959 5.54 01/10/1960 2.56 01/26/1961 3.18 02/11/1962 11.54 02/10/1963 4.70 04/01/1964 2.91 04/01/1965 3.21 12/29/1965 12.17 11/07/1966 8.70 11/19/1967 4.38 01/25/1969 12.70 02/28/1970 6.94 11/29/1970 11.25 12/24/1971 5.22 02/11/1973 10.96 01/08/1974 4.90 03/06/1975 4.18 02/09/1976 5.34 05/09/1977 6.08 02/10/1978 12.20 01/16/1979 4.16 01/29/1980 8.38 03/01/1981 2.37 03/17/1982 4.31 03/02/1983 12.27 12/25/1983 4.20 12/19/1984 3.98 11/11/1985 4.70 01/05/1987 3.05 10/23/1987 4.07 12/16/1988 7.08 01/14/1990 2.90 03/01/1991 5.62 02/11/1992 8.41 02/19/1993 7.84 03/25/1994 2.68 01/11/1995 6.40 02/21/1996 4.67 12/10/1996 3.79 02/24/1998 9.22 04/12/1999 1.81 02/21/2000 6.14 01/11/2001 5.51 01/28/2002 2.61 02/13/2003 6.50 02/26/2004 5.75 10/20/2004 9.94 02/28/2006 5.42 -9/-9/-999 -9.99 Duration: 2 days 02/08/1932 8.86 01/19/1933 10.96 12/31/1933 15.00 10/18/1934 6.71 02/11/1936 5.23 12/27/1936 7.37 03/01/1938 16.94 09/24/1939 9.09 01/07/1940 4.60 02/20/1941 8.89 12/09/1941 4.23 01/22/1943 29.31 02/21/1944 16.36 11/11/1944 5.94 12/21/1945 11.20 11/12/1946 10.91 02/05/1948 3.91 12/17/1948 2.60 12/18/1949 4.79 -9/-9/-999 -9.99 01/15/1952 8.15 11/14/1952 4.13 01/18/1954 5.63 04/30/1955 4.09 01/25/1956 7.99 01/12/1957 4.85 02/03/1958 8.26 01/06/1959 6.26 04/27/1960 2.83 01/26/1961 3.59 02/11/1962 14.79 02/09/1963 7.45 01/21/1964 4.89 04/01/1965 5.24 12/29/1965 13.75 11/07/1966 9.83 11/19/1967 6.91 01/25/1969 17.60 02/28/1970 9.53 11/28/1970 12.71 12/24/1971 6.61 02/11/1973 12.41 01/07/1974 8.01 03/06/1975 4.86 02/09/1976 8.56 05/09/1977 7.02 02/09/1978 15.57 03/27/1979 5.10 02/14/1980 11.76 03/01/1981 4.54 03/17/1982 8.26 03/01/1983 16.67 09/30/1983 5.26 12/19/1984 6.73 01/30/1986 7.34 01/04/1987 3.50 01/17/1988 5.15 12/16/1988 7.83 02/17/1990 4.93 02/28/1991 11.21 02/11/1992 10.73 02/19/1993 10.99 02/07/1994 3.13 01/24/1995 9.31 02/20/1996 8.25 12/10/1996 5.56 02/23/1998 12.91 04/07/1999 2.07 02/21/2000 7.57 02/12/2001 8.16 01/28/2002 2.95 02/12/2003 9.34 02/26/2004 6.50 01/09/2005 12.43 01/02/2006 8.17 -9/-9/-999 -9.99 Duration: 3 days 02/07/1932 9.30 01/17/1933 15.91 12/30/1933 15.75 12/12/1934 7.00 02/11/1936 6.15 12/27/1936 7.66 02/28/1938 21.47 09/24/1939 9.91 02/01/1940 5.26 02/20/1941 10.02 12/09/1941 4.44 01/21/1943 29.87 02/20/1944 19.89 11/10/1944 8.05 12/21/1945 13.64 11/12/1946 11.67 02/05/1948 4.11 01/20/1949 2.73 12/18/1949 5.03 02/27/1951 1.78 01/16/1952 11.65 11/14/1952 4.65 01/18/1954 6.06 04/30/1955 4.29 01/25/1956 9.12 01/12/1957 5.09 04/01/1958 9.19 01/06/1959 6.57 01/10/1960 3.76 01/25/1961 3.77 02/10/1962 16.40 02/09/1963 7.82 01/21/1964 5.13 03/31/1965 6.29 11/22/1965 14.44 01/22/1967 10.32 11/19/1967 9.36 01/24/1969 20.42 02/28/1970 11.01 11/28/1970 13.35 12/24/1971 7.79 02/11/1973 13.06 01/06/1974 9.97 03/06/1975 6.91 02/08/1976 10.34 05/08/1977 7.90 02/08/1978 16.37 03/27/1979 6.37 02/17/1980 14.54 03/01/1981 4.83 03/17/1982 8.41 03/01/1983 20.59 09/30/1983 6.10 12/18/1984 7.08 01/30/1986 8.19 01/04/1987 3.68 01/17/1988 5.41 12/15/1988 8.22 02/17/1990 5.01 02/28/1991 12.20 02/11/1992 14.59 01/13/1993 12.10 02/07/1994 3.29 01/09/1995 10.26 02/20/1996 9.65 12/10/1996 5.97 02/22/1998 14.70 04/07/1999 2.32 02/20/2000 7.97 02/12/2001 8.92 01/28/2002 3.10 02/11/2003 10.20 02/24/2004 6.82 01/08/2005 17.37 01/01/2006 8.95 -9/-9/-999 -9.99 Duration: 4 days 02/06/1932 9.67 01/17/1933 17.88 12/30/1933 16.38 12/12/1934 7.28 02/11/1936 6.47 12/25/1936 8.34 02/27/1938 23.37 09/24/1939 10.31 01/31/1940 5.39 02/19/1941 10.58 12/09/1941 4.62 01/21/1943 31.06 02/19/1944 20.16 11/10/1944 8.39 12/21/1945 14.19 11/11/1946 12.42 02/05/1948 4.27 01/20/1949 2.90 12/18/1949 5.23 02/27/1951 1.85 01/15/1952 13.65 11/14/1952 4.84 01/18/1954 6.30 04/30/1955 4.47 01/25/1956 9.48 01/10/1957 5.51 03/31/1958 9.41 01/06/1959 6.84 01/09/1960 3.84 11/03/1960 4.31 02/08/1962 19.48 02/09/1963 8.14 01/21/1964 5.34 03/31/1965 7.26 11/15/1965 15.19 12/03/1966 12.63 11/19/1967 9.57 01/24/1969 21.24 02/28/1970 11.45 11/28/1970 13.88 12/24/1971 9.73 02/11/1973 13.58 01/05/1974 12.82 03/05/1975 7.08 02/07/1976 11.09 05/08/1977 8.22 02/08/1978 16.59 03/27/1979 6.62 02/14/1980 19.78 03/01/1981 5.02 03/15/1982 10.62 02/28/1983 23.04 09/29/1983 6.34 12/16/1984 8.09 01/30/1986 8.52 01/04/1987 3.91 02/28/1988 5.62 12/16/1988 8.55 02/17/1990 5.18 02/28/1991 12.69 02/10/1992 16.71 01/12/1993 13.80 02/05/1994 3.34 01/08/1995 13.14 02/20/1996 10.04 12/10/1996 6.21 02/22/1998 15.29 04/06/1999 2.37 02/21/2000 10.43 02/11/2001 9.21 01/28/2002 3.22 02/11/2003 10.49 02/23/2004 7.10 01/08/2005 21.83 01/01/2006 9.31 -9/-9/-999 -9.99 Duration: 7 days 02/08/1932 9.96 01/17/1933 19.54 12/30/1933 16.87 12/08/1934 8.41 02/11/1936 9.18 12/25/1936 12.25 02/27/1938 24.55 12/14/1938 13.66 01/04/1940 5.93 02/15/1941 13.91 12/26/1941 4.75 01/21/1943 31.47 02/19/1944 20.51 11/10/1944 9.31 12/21/1945 14.61 11/08/1946 12.95 02/02/1948 4.40 01/19/1949 3.26 12/18/1949 5.39 04/25/1951 2.75 01/12/1952 20.18 11/14/1952 4.98 01/19/1954 10.01 04/26/1955 4.60 01/25/1956 9.97 01/07/1957 5.76 04/01/1958 11.42 02/11/1959 8.46 01/09/1960 4.56 11/03/1960 4.44 02/07/1962 22.96 02/09/1963 8.38 01/21/1964 5.50 03/31/1965 7.52 11/17/1965 20.52 12/02/1966 13.35 11/19/1967 9.86 01/20/1969 36.68 02/28/1970 12.74 11/26/1970 14.30 12/22/1971 12.64 02/06/1973 16.05 01/04/1974 13.86 03/05/1975 7.92 02/05/1976 14.84 05/08/1977 8.46 02/28/1978 22.84 03/27/1979 6.82 02/14/1980 28.48 03/01/1981 5.92 03/12/1982 12.74 02/26/1983 25.56 09/29/1983 6.53 12/16/1984 10.84 01/30/1986 8.77 01/04/1987 4.03 04/15/1988 6.50 12/15/1988 9.49 01/13/1990 5.26 02/28/1991 13.07 02/07/1992 20.16 01/12/1993 23.20 02/04/1994 4.45 01/05/1995 17.42 02/20/1996 10.34 12/22/1996 6.40 02/20/1998 15.46 04/07/1999 4.27 02/20/2000 10.83 02/10/2001 9.31 01/28/2002 3.32 02/11/2003 10.80 02/21/2004 9.51 01/07/2005 22.48 01/01/2006 9.59 -9/-9/-999 -9.99 Duration: 10 days 01/31/1932 16.67 01/16/1933 20.57 12/30/1933 17.21 12/08/1934 8.58 02/11/1936 10.00 12/25/1936 12.50 02/27/1938 25.04 12/14/1938 13.93 01/04/1940 6.05 02/14/1941 15.79 12/23/1941 4.85 01/22/1943 33.24 02/15/1944 21.06 11/05/1944 9.83 12/21/1945 14.90 11/11/1946 15.17 02/02/1948 4.49 01/11/1949 3.94 12/18/1949 5.50 04/25/1951 2.81 01/12/1952 20.58 11/07/1952 5.54 01/18/1954 10.77 01/10/1955 5.78 01/23/1956 10.17 01/04/1957 7.38 03/30/1958 11.67 02/08/1959 9.77 01/09/1960 4.65 11/03/1960 5.00 02/07/1962 25.07 02/09/1963 8.55 03/23/1964 5.61 04/01/1965 12.08 11/15/1965 28.12 11/28/1966 13.62 11/19/1967 10.05 01/19/1969 39.89 02/28/1970 12.99 11/25/1970 14.58 12/22/1971 12.89 02/04/1973 17.92 01/01/1974 14.21 03/05/1975 8.74 02/05/1976 15.14 12/30/1976 8.63 02/27/1978 23.30 03/19/1979 6.96 02/13/1980 30.56 02/26/1981 6.78 03/12/1982 12.99 02/25/1983 26.07 09/29/1983 6.66 12/11/1984 11.84 01/30/1986 8.95 01/04/1987 4.11 10/23/1987 8.56 12/16/1988 11.07 01/13/1990 5.37 02/28/1991 13.33 02/07/1992 22.74 01/06/1993 23.80 02/04/1994 4.54 01/03/1995 20.23 02/20/1996 10.54 12/22/1996 6.52 02/15/1998 18.60 04/04/1999 4.36 02/15/2000 12.92 02/11/2001 10.15 01/28/2002 3.38 02/11/2003 11.02 02/22/2004 10.58 01/03/2005 24.10 12/26/2005 9.78 -9/-9/-999 -9.99 Duration: 20 days 01/31/1932 19.12 01/16/1933 22.26 12/13/1933 20.60 12/27/1934 9.96 02/01/1936 14.88 12/15/1936 17.10 02/27/1938 29.31 12/14/1938 13.93 12/23/1939 6.88 02/14/1941 27.68 12/10/1941 7.76 01/21/1943 34.18 02/15/1944 25.67 11/05/1944 9.85 12/21/1945 14.90 11/08/1946 17.76 03/13/1948 4.49 01/09/1949 5.54 12/08/1949 5.93 01/10/1951 3.35 12/30/1951 23.43 11/14/1952 7.96 01/11/1954 11.72 01/01/1955 8.13 01/20/1956 10.17 01/10/1957 8.31 03/15/1958 16.91 02/07/1959 10.64 12/24/1959 5.53 11/03/1960 5.45 02/07/1962 28.19 01/31/1963 9.05 03/22/1964 6.41 03/31/1965 13.57 11/14/1965 29.32 11/20/1966 13.82 11/19/1967 10.99 01/18/1969 46.35 02/10/1970 14.70 11/28/1970 14.58 12/13/1971 12.89 01/26/1973 18.43 01/01/1974 14.62 03/05/1975 9.60 02/05/1976 15.14 12/30/1976 8.63 02/27/1978 24.47 01/15/1979 11.75 02/14/1980 34.72 03/01/1981 8.00 03/14/1982 17.04 02/26/1983 26.90 09/29/1983 6.66 12/08/1984 15.65 01/30/1986 14.62 12/20/1986 4.11 10/22/1987 11.03 12/15/1988 11.24 12/29/1989 5.75 02/28/1991 16.48 02/06/1992 23.22 12/29/1992 36.10 02/04/1994 7.69 01/05/1995 25.98 02/20/1996 12.17 12/10/1996 12.17 02/07/1998 25.84 03/25/1999 4.92 02/20/2000 16.88 02/10/2001 14.98 11/11/2001 3.38 02/11/2003 12.62 02/19/2004 11.78 12/28/2004 36.75 12/26/2005 9.78 -9/-9/-999 -9.99 Duration: 30 days 01/20/1932 19.24 01/16/1933 22.26 12/04/1933 20.75 12/12/1934 14.52 01/28/1936 16.28 12/15/1936 19.07 02/01/1938 37.66 12/14/1938 15.69 01/05/1940 11.79 02/14/1941 32.83 12/03/1941 9.07 01/21/1943 34.18 02/04/1944 27.29 11/05/1944 10.03 12/21/1945 14.90 10/27/1946 18.42 03/13/1948 5.65 12/26/1948 7.49 12/18/1949 8.65 01/05/1951 3.54 12/28/1951 26.69 11/07/1952 8.90 01/18/1954 15.38 01/01/1955 8.13 01/25/1956 10.95 01/04/1957 10.18 03/11/1958 20.52 02/07/1959 10.64 12/21/1959 6.88 11/03/1960 6.68 02/07/1962 29.66 01/31/1963 9.05 03/22/1964 6.84 03/13/1965 13.80 11/14/1965 30.78 11/07/1966 22.37 11/19/1967 12.64 01/13/1969 48.68 02/09/1970 18.16 11/25/1970 20.70 12/03/1971 13.01 01/17/1973 23.45 01/01/1974 14.92 03/05/1975 9.74 02/05/1976 18.09 12/30/1976 9.00 02/05/1978 43.56 01/05/1979 16.24 01/28/1980 39.62 02/26/1981 8.91 03/08/1982 18.53 02/25/1983 30.57 12/01/1983 6.82 12/03/1984 16.55 01/30/1986 15.99 02/10/1987 4.28 10/12/1987 11.97 12/15/1988 11.24 01/02/1990 5.95 02/28/1991 23.35 02/06/1992 28.02 12/27/1992 39.80 01/25/1994 8.67 12/29/1994 31.32 01/28/1996 15.11 12/10/1996 13.39 01/29/1998 30.21 03/15/1999 6.39 02/11/2000 22.28 02/10/2001 17.51 11/25/2001 4.07 02/11/2003 12.71 02/03/2004 13.39 12/28/2004 36.80 02/28/2006 12.07 -9/-9/-999 -9.99 Duration: 45 days 12/28/1931 22.70 12/21/1932 22.58 11/28/1933 21.34 12/08/1934 19.12 01/28/1936 16.28 12/25/1936 21.40 01/28/1938 43.87 12/14/1938 17.30 12/23/1939 13.12 02/06/1941 36.77 11/29/1941 9.59 01/21/1943 53.72 01/23/1944 28.63 10/21/1944 10.06 12/21/1945 17.39 11/12/1946 26.18 03/17/1948 7.09 12/17/1948 10.16 12/08/1949 9.79 01/16/1951 4.64 12/05/1951 30.26 11/14/1952 11.62 01/11/1954 16.39 12/09/1954 8.93 01/20/1956 11.12 01/10/1957 11.80 02/19/1958 25.61 01/06/1959 15.43 12/21/1959 9.08 11/03/1960 6.68 01/13/1962 32.73 02/09/1963 9.66 03/22/1964 7.56 03/07/1965 14.24 11/15/1965 42.94 11/07/1966 22.91 11/19/1967 13.35 01/13/1969 71.22 02/09/1970 18.16 11/25/1970 20.92 12/03/1971 13.01 02/04/1973 27.65 12/01/1973 15.38 03/05/1975 13.61 02/05/1976 18.25 12/30/1976 9.00 02/06/1978 45.89 12/18/1978 17.90 01/09/1980 48.26 01/23/1981 12.61 03/02/1982 19.91 01/19/1983 39.81 11/12/1983 10.80 11/13/1984 19.63 01/30/1986 20.59 02/10/1987 5.37 10/22/1987 13.34 11/14/1988 13.09 01/13/1990 10.80 02/28/1991 23.37 02/08/1992 33.02 01/06/1993 48.26 02/04/1994 9.25 01/03/1995 36.47 01/31/1996 19.90 12/10/1996 18.82 01/11/1998 30.54 03/10/1999 6.51 01/25/2000 23.73 01/25/2001 18.43 11/11/2001 4.92 02/11/2003 18.61 01/21/2004 13.43 01/08/2005 45.03 02/28/2006 16.60 -9/-9/-999 -9.99 Duration: 60 days 12/21/1931 27.94 12/09/1932 24.65 11/28/1933 21.34 12/08/1934 22.95 02/01/1936 19.60 12/25/1936 26.83 01/14/1938 47.63 12/14/1938 19.84 01/04/1940 16.27 02/11/1941 45.89 11/29/1941 9.86 01/21/1943 54.27 01/23/1944 28.97 01/31/1945 12.07 12/21/1945 17.72 11/08/1946 28.60 02/05/1948 9.54 12/17/1948 11.26 12/18/1949 12.21 01/05/1951 6.14 11/20/1951 33.59 11/14/1952 13.53 01/18/1954 18.10 12/03/1954 10.83 12/27/1955 11.33 01/04/1957 14.73 02/03/1958 34.00 01/06/1959 16.18 12/21/1959 9.65 10/09/1960 7.03 01/20/1962 34.40 01/31/1963 11.94 02/29/1964 8.07 03/07/1965 14.24 11/14/1965 43.60 11/28/1966 23.58 11/19/1967 13.54 01/13/1969 72.63 01/09/1970 20.30 11/25/1970 21.94 11/12/1971 13.85 01/17/1973 31.31 11/17/1973 19.30 01/28/1975 14.06 02/05/1976 18.67 03/17/1977 11.04 01/05/1978 57.09 12/17/1978 21.96 01/08/1980 54.54 01/23/1981 14.69 02/08/1982 20.64 01/22/1983 42.15 11/02/1983 11.98 11/08/1984 21.17 01/30/1986 23.69 11/15/1986 7.01 10/22/1987 16.48 12/15/1988 16.33 12/29/1989 11.29 02/28/1991 23.38 02/06/1992 37.44 12/27/1992 60.16 01/25/1994 13.02 01/05/1995 38.34 01/17/1996 20.87 12/06/1996 21.06 01/03/1998 33.64 03/10/1999 6.80 01/16/2000 23.88 01/11/2001 25.08 11/05/2001 5.36 02/11/2003 18.71 01/03/2004 14.10 12/28/2004 64.83 02/18/2006 18.31 -9/-9/-999 -9.99