Precipitation annual maximum series (inches) Station ID: 19-3985 Station name: KNIGHTVILLE DAM State: MA Latitude (decimal degrees): 42.2910 Longitude (decimal degrees): -72.8595 Elevation (feet): 630 Duration: 15 minutes 08/20/1971 0.70 05/31/1972 0.50 06/05/1973 0.60 07/05/1974 0.70 08/08/1975 0.80 06/30/1976 0.90 03/22/1977 0.40 07/10/1978 0.40 10/03/1979 1.00 06/29/1980 0.70 07/18/1984 0.28 09/27/1985 0.88 07/29/1986 0.60 07/20/1987 0.25 07/14/1988 0.65 06/23/1989 0.59 08/07/1990 0.65 08/02/1993 0.44 06/26/1995 0.65 01/14/1996 0.70 03/31/1997 0.30 Duration: 30 minutes 08/20/1971 1.00 07/25/1972 0.70 06/05/1973 0.80 07/05/1974 1.20 06/30/1976 1.30 05/19/1977 0.50 08/07/1978 0.70 10/03/1979 1.30 06/29/1980 0.90 07/18/1984 0.41 09/27/1985 1.63 07/29/1986 0.76 09/08/1987 0.33 07/14/1988 1.12 06/23/1989 0.73 08/07/1990 0.65 08/02/1993 0.75 06/26/1995 1.09 01/14/1996 0.80 03/31/1997 0.30 Duration: 45 minutes 08/20/1971 1.20 07/25/1972 0.70 06/05/1973 0.80 07/05/1974 1.20 06/30/1976 1.40 07/17/1977 0.70 08/07/1978 0.80 10/03/1979 1.50 06/29/1980 1.10 07/18/1984 0.46 09/27/1985 2.12 07/29/1986 0.82 09/08/1987 0.44 07/14/1988 1.30 06/23/1989 0.84 08/07/1990 0.65 08/02/1993 0.97 06/26/1995 1.43 07/15/1996 1.00 03/31/1997 0.30 Duration: 1 hour 08/08/1947 1.66 08/13/1948 1.30 07/20/1949 0.91 11/25/1950 0.67 06/17/1951 0.89 09/01/1952 1.00 09/13/1953 1.87 09/07/1954 0.61 08/19/1955 1.11 04/28/1956 0.55 07/22/1957 0.81 07/08/1958 0.67 09/03/1959 1.01 09/12/1960 0.93 06/10/1961 1.10 11/10/1962 0.47 06/29/1963 0.76 07/29/1964 1.04 08/09/1965 0.83 07/19/1966 1.47 06/17/1967 0.83 09/11/1968 1.05 06/15/1969 0.88 08/20/1970 1.20 08/20/1971 1.20 08/14/1972 0.74 08/02/1973 0.93 08/04/1974 1.11 07/13/1975 0.97 08/10/1976 1.30 08/01/1977 1.53 08/07/1978 0.95 10/03/1979 1.78 06/29/1980 1.02 09/08/1981 0.83 11/28/1982 0.85 07/18/1984 0.45 09/27/1985 2.39 07/29/1986 0.81 04/13/1987 0.52 07/14/1988 1.36 06/23/1989 0.81 08/07/1990 0.60 08/02/1993 1.22 06/26/1995 1.54 Duration: 2 hours 08/08/1947 1.93 07/20/1949 1.19 11/25/1950 1.12 06/17/1951 1.29 09/01/1952 1.85 09/13/1953 2.52 10/15/1954 1.04 08/19/1955 2.06 06/03/1956 0.83 07/22/1957 0.89 08/13/1958 0.71 08/30/1959 1.25 09/12/1960 1.48 06/10/1961 1.66 11/10/1962 0.90 06/29/1963 0.94 07/29/1964 1.21 08/09/1965 1.36 07/19/1966 2.08 06/17/1967 1.25 09/11/1968 1.55 07/29/1969 1.29 08/20/1970 1.32 08/28/1971 1.44 06/30/1972 0.96 06/05/1973 1.35 08/04/1974 1.21 07/13/1975 1.20 08/10/1976 1.54 08/01/1977 1.62 08/07/1978 1.23 10/03/1979 1.95 06/29/1980 1.15 09/08/1981 1.06 11/28/1982 0.88 04/05/1984 0.69 09/27/1985 3.59 07/29/1986 0.99 04/13/1987 0.89 07/14/1988 1.60 06/23/1989 1.00 08/07/1990 0.87 08/02/1993 1.54 06/26/1995 1.65 Duration: 3 hours 07/20/1949 1.21 11/25/1950 1.23 06/17/1951 1.32 09/01/1952 2.16 09/13/1953 2.59 08/31/1954 1.20 08/19/1955 2.85 06/03/1956 0.93 07/27/1957 1.02 10/23/1958 1.03 08/30/1959 2.01 09/12/1960 1.98 06/10/1961 1.96 11/10/1962 1.07 12/09/1963 0.96 07/29/1964 1.24 08/09/1965 1.40 07/19/1966 2.35 10/25/1967 1.60 09/11/1968 2.05 07/29/1969 1.32 08/20/1970 1.37 08/28/1971 2.00 10/07/1972 1.28 08/02/1973 1.70 08/04/1974 1.36 07/13/1975 1.46 08/10/1976 1.57 08/01/1977 1.76 08/07/1978 1.33 10/03/1979 2.06 10/25/1980 1.32 09/08/1981 1.11 06/05/1982 1.07 04/05/1984 1.00 09/27/1985 4.39 07/29/1986 1.11 04/13/1987 1.24 07/14/1988 2.04 06/23/1989 1.19 08/07/1990 1.10 08/02/1993 1.60 11/12/1995 1.72 Duration: 6 hours 08/29/1949 1.37 11/25/1950 2.07 11/07/1951 1.49 09/01/1952 3.02 09/12/1953 2.72 09/11/1954 2.26 08/18/1955 4.07 06/02/1956 1.23 07/27/1957 1.58 10/23/1958 1.62 08/30/1959 2.24 09/12/1960 2.91 06/10/1961 2.01 11/10/1962 1.45 12/08/1963 1.32 11/25/1964 1.48 08/09/1965 1.56 07/19/1966 2.41 10/25/1967 2.25 09/11/1968 2.52 06/15/1969 1.67 08/23/1970 1.85 08/28/1971 2.35 10/07/1972 1.97 08/02/1973 2.36 08/04/1974 1.50 03/19/1975 1.92 08/09/1976 2.38 08/01/1977 1.85 08/07/1978 1.52 10/03/1979 2.10 10/25/1980 2.33 02/20/1981 1.55 06/06/1982 1.78 04/05/1984 1.60 09/27/1985 5.46 07/02/1986 1.57 04/04/1987 1.76 07/14/1988 2.06 08/11/1989 1.67 08/07/1990 1.36 11/28/1993 1.62 10/21/1995 2.50 Duration: 12 hours 12/30/1948 3.60 08/29/1949 1.53 11/25/1950 3.22 10/07/1951 1.95 09/01/1952 3.05 09/12/1953 2.75 09/11/1954 3.30 08/18/1955 5.64 06/02/1956 1.38 12/26/1957 1.62 10/23/1958 1.93 10/24/1959 2.48 09/12/1960 3.84 06/10/1961 2.40 11/10/1962 1.53 11/07/1963 2.05 11/25/1964 1.67 08/09/1965 2.02 07/19/1966 2.43 10/25/1967 2.30 09/11/1968 2.64 04/22/1969 2.77 08/23/1970 2.50 08/27/1971 2.79 10/07/1972 2.48 08/02/1973 2.45 09/03/1974 1.69 03/19/1975 2.63 08/09/1976 2.80 05/08/1977 2.41 01/08/1978 1.88 01/24/1979 2.78 03/21/1980 3.09 02/20/1981 2.42 06/05/1982 3.18 04/05/1984 2.49 09/27/1985 5.87 12/18/1986 1.97 04/04/1987 2.93 10/21/1988 2.34 10/20/1989 2.91 08/07/1990 2.07 06/05/1992 3.10 11/28/1993 2.12 10/21/1995 3.08 Duration: 1 day 12/31/1948 5.58 01/06/1949 1.70 11/26/1950 2.95 11/03/1951 1.97 11/23/1952 2.85 09/13/1953 2.48 11/03/1954 3.32 08/19/1955 8.50 12/15/1956 1.45 12/21/1957 1.59 10/24/1958 1.78 08/30/1959 2.89 09/13/1960 3.91 06/11/1961 2.35 01/07/1962 1.57 11/08/1963 2.16 11/26/1964 1.51 08/10/1965 2.00 07/20/1966 2.45 10/26/1967 2.07 05/30/1968 2.51 04/23/1969 3.44 02/11/1970 2.26 08/28/1971 3.60 06/01/1972 2.45 06/30/1973 2.48 09/04/1974 2.00 03/20/1975 2.76 08/10/1976 3.15 05/09/1977 3.15 01/26/1978 2.21 01/25/1979 3.23 03/22/1980 3.78 02/21/1981 2.73 06/06/1982 4.85 04/20/1983 3.70 04/06/1984 2.82 09/28/1985 5.38 12/19/1986 2.70 04/05/1987 3.10 07/22/1988 2.42 10/21/1989 3.50 10/24/1990 2.97 08/20/1991 2.52 06/06/1992 3.40 04/22/1993 2.27 07/24/1994 2.38 10/06/1995 4.05 07/14/1996 3.88 Duration: 2 days 12/30/1948 7.73 01/06/1949 1.81 11/25/1950 3.25 03/30/1951 2.60 11/22/1952 3.24 03/25/1953 2.83 09/11/1954 3.70 08/18/1955 9.07 12/15/1956 1.80 12/20/1957 2.35 10/23/1958 2.14 10/24/1959 3.52 09/12/1960 4.63 06/10/1961 3.74 10/06/1962 2.15 11/07/1963 2.89 11/26/1964 1.62 08/09/1965 2.43 07/20/1966 2.61 06/18/1967 2.57 09/11/1968 2.68 07/29/1969 3.94 05/18/1970 2.65 08/28/1971 4.86 05/31/1972 2.64 06/29/1973 3.80 09/03/1974 2.51 09/26/1975 4.14 08/09/1976 3.36 05/09/1977 3.72 01/09/1978 2.36 01/25/1979 3.78 03/21/1980 4.25 02/20/1981 3.34 06/06/1982 6.20 04/19/1983 4.17 05/30/1984 4.68 09/27/1985 6.05 01/26/1986 3.35 04/05/1987 4.11 07/21/1988 3.95 10/20/1989 4.17 10/23/1990 3.17 08/19/1991 3.91 06/06/1992 3.63 04/22/1993 4.32 12/24/1994 2.61 10/21/1995 4.68 07/13/1996 4.14 Duration: 3 days 12/30/1948 7.81 01/06/1949 1.83 11/25/1950 3.34 11/01/1951 2.83 11/21/1952 3.54 03/25/1953 3.75 09/11/1954 3.74 10/15/1955 9.95 12/13/1956 1.93 12/20/1957 2.37 09/17/1958 2.16 10/23/1959 3.80 09/12/1960 5.00 06/09/1961 3.78 10/05/1962 2.25 11/06/1963 3.10 03/09/1964 1.75 08/09/1965 2.45 07/20/1966 2.64 06/18/1967 2.59 05/30/1968 3.18 07/29/1969 4.32 05/17/1970 3.25 08/27/1971 4.91 06/22/1972 2.79 06/28/1973 4.50 09/02/1974 2.70 09/25/1975 5.55 08/08/1976 3.65 05/09/1977 3.88 08/06/1978 2.47 05/24/1979 4.27 03/21/1980 4.30 02/20/1981 3.50 06/05/1982 6.30 04/19/1983 4.21 05/29/1984 7.06 09/27/1985 6.11 01/26/1986 3.40 04/05/1987 5.04 07/20/1988 4.82 10/20/1989 4.32 08/06/1990 3.21 08/19/1991 4.77 06/06/1992 3.67 04/21/1993 4.82 12/24/1994 2.64 10/21/1995 4.73 07/14/1996 4.91 Duration: 4 days 01/06/1949 1.85 11/25/1950 3.54 03/31/1951 3.50 11/20/1952 3.59 03/13/1953 4.03 09/11/1954 3.80 10/15/1955 10.20 12/13/1956 2.28 07/28/1957 2.43 10/24/1958 2.54 10/23/1959 3.84 09/12/1960 5.05 06/09/1961 3.82 09/26/1962 2.43 11/06/1963 3.30 11/26/1964 1.95 08/09/1965 2.48 11/03/1966 2.67 06/18/1967 3.32 05/29/1968 3.28 07/28/1969 4.62 08/21/1970 3.92 08/27/1971 4.96 06/23/1972 3.15 06/28/1973 4.54 09/04/1974 2.85 09/24/1975 5.90 08/07/1976 5.35 05/09/1977 3.92 08/05/1978 3.02 07/16/1979 5.80 03/22/1980 4.65 02/21/1981 4.35 06/05/1982 6.36 04/17/1983 5.59 05/29/1984 7.46 09/25/1985 6.93 01/26/1986 3.43 04/05/1987 5.09 07/20/1988 4.87 10/18/1989 5.08 08/06/1990 3.24 08/19/1991 4.90 06/06/1992 3.71 04/21/1993 4.87 07/21/1994 3.55 10/21/1995 4.78 07/13/1996 5.17 Duration: 7 days 05/19/1949 2.82 11/21/1950 4.76 11/01/1951 4.36 12/06/1952 4.35 03/25/1953 4.70 09/11/1954 4.95 08/13/1955 14.50 12/09/1956 2.83 12/21/1957 3.35 01/22/1958 3.08 08/30/1959 4.83 09/10/1960 5.10 04/11/1961 3.86 10/05/1962 2.60 11/06/1963 3.90 11/20/1964 2.45 05/28/1965 2.67 11/03/1966 2.94 06/18/1967 4.40 05/29/1968 4.00 07/29/1969 5.57 08/21/1970 3.96 08/23/1971 5.01 11/09/1972 3.93 06/29/1973 5.40 08/29/1974 3.65 09/23/1975 6.30 08/07/1976 5.40 05/05/1977 4.08 01/09/1978 3.87 01/21/1979 6.60 03/18/1980 5.20 02/20/1981 6.32 06/02/1982 7.32 04/19/1983 5.75 05/29/1984 8.21 09/24/1985 7.00 12/19/1986 3.72 03/31/1987 6.76 07/18/1988 6.17 10/15/1989 6.42 08/06/1990 5.67 08/16/1991 5.26 05/31/1992 4.89 04/17/1993 5.81 07/21/1994 4.40 11/11/1995 5.03 09/17/1996 5.69 Duration: 10 days 05/19/1949 2.92 11/21/1950 4.96 11/01/1951 4.41 12/03/1952 4.40 03/25/1953 4.87 09/08/1954 5.92 08/12/1955 15.05 12/09/1956 3.18 12/20/1957 4.10 01/22/1958 3.23 08/30/1959 4.88 09/12/1960 6.90 07/15/1961 3.93 09/28/1962 4.28 11/02/1963 4.30 11/26/1964 2.95 05/28/1965 2.70 11/03/1966 3.40 06/18/1967 4.75 06/11/1968 4.24 07/28/1969 7.90 02/03/1970 4.46 08/20/1971 6.25 06/22/1972 5.62 06/28/1973 6.30 08/30/1974 4.34 09/19/1975 6.80 08/01/1976 6.75 03/14/1977 4.48 01/09/1978 4.87 01/18/1979 6.95 03/14/1980 6.46 02/17/1981 6.42 05/29/1982 9.09 04/11/1983 7.78 05/24/1984 8.86 09/27/1985 8.04 01/20/1986 4.30 03/31/1987 7.71 07/15/1988 8.22 10/15/1989 6.48 08/06/1990 6.03 08/16/1991 5.31 05/31/1992 4.98 04/16/1993 5.88 07/21/1994 5.27 10/21/1995 6.69 09/14/1996 6.75 Duration: 20 days 04/06/1949 3.70 11/21/1950 7.54 10/24/1951 5.98 11/23/1952 7.59 03/13/1953 9.13 08/30/1954 8.82 08/08/1955 15.25 12/09/1956 4.21 12/08/1957 5.80 01/08/1958 4.93 10/07/1959 6.05 09/12/1960 7.67 04/11/1961 5.15 09/18/1962 5.28 10/28/1963 4.97 11/17/1964 4.25 08/09/1965 3.77 10/19/1966 5.32 06/18/1967 6.21 05/30/1968 8.03 07/21/1969 8.71 01/29/1970 4.98 08/12/1971 6.75 06/17/1972 6.79 12/09/1973 8.23 08/18/1974 6.49 07/10/1975 7.66 07/28/1976 8.13 04/23/1977 7.73 01/08/1978 8.34 01/08/1979 10.50 03/11/1980 8.61 02/08/1981 9.27 05/29/1982 11.43 04/08/1983 10.05 05/14/1984 9.77 09/25/1985 9.22 05/21/1986 5.55 03/31/1987 10.43 07/09/1988 9.18 05/06/1989 8.25 08/06/1990 8.31 08/04/1991 7.27 07/30/1992 6.97 04/11/1993 7.21 07/09/1994 5.89 10/05/1995 10.07 09/10/1996 8.13 Duration: 30 days 04/04/1949 4.76 11/17/1950 8.58 10/07/1951 8.15 11/16/1952 8.31 03/13/1953 11.00 08/30/1954 9.41 10/07/1955 19.55 11/18/1956 5.23 12/10/1957 6.88 01/15/1958 5.68 10/01/1959 7.25 09/10/1960 7.82 04/11/1961 6.85 02/14/1962 6.55 11/02/1963 6.73 01/10/1964 4.95 09/14/1965 4.94 09/22/1966 6.39 06/18/1967 7.69 05/30/1968 10.70 07/13/1969 10.83 08/21/1970 6.53 07/31/1971 9.09 11/08/1972 9.35 11/28/1973 9.83 08/18/1974 8.24 07/11/1975 11.76 07/21/1976 8.61 09/19/1977 8.81 01/09/1978 8.90 01/01/1979 12.05 03/14/1980 10.70 02/02/1981 11.13 05/23/1982 12.50 03/28/1983 12.06 05/04/1984 12.28 09/07/1985 10.32 11/21/1986 7.98 03/31/1987 11.19 07/09/1988 9.36 04/30/1989 10.73 10/13/1990 8.48 07/27/1991 7.72 07/20/1992 8.55 03/25/1993 10.66 07/21/1994 7.79 10/14/1995 13.36 09/13/1996 10.43 Duration: 45 days 04/14/1949 6.67 11/03/1950 10.63 10/07/1951 10.55 04/25/1952 9.19 03/04/1953 14.65 08/04/1954 10.42 09/24/1955 22.48 02/03/1956 6.93 11/02/1957 6.88 12/20/1957 9.93 10/24/1959 10.28 07/31/1960 11.78 06/09/1961 8.14 09/28/1962 8.38 10/28/1963 8.92 11/20/1964 6.59 08/26/1965 6.21 09/22/1966 8.51 06/18/1967 9.72 05/17/1968 12.96 07/28/1969 11.30 08/21/1970 7.53 07/18/1971 10.88 11/02/1972 12.90 11/28/1973 11.49 08/18/1974 10.67 06/30/1975 12.23 07/01/1976 10.38 09/06/1977 11.51 12/13/1977 11.65 12/17/1978 14.55 03/06/1980 13.00 01/29/1981 11.28 05/21/1982 13.92 03/07/1983 16.09 04/24/1984 13.58 08/25/1985 13.14 11/06/1986 11.01 03/01/1987 11.89 07/18/1988 10.89 05/03/1989 14.33 04/04/1990 9.86 08/16/1991 11.59 07/05/1992 11.36 03/11/1993 14.88 07/10/1994 9.81 10/05/1995 18.42 09/07/1996 16.04 Duration: 60 days 12/30/1948 11.32 11/03/1950 12.04 10/07/1951 12.12 11/20/1952 12.46 03/13/1953 18.00 07/21/1954 13.28 09/24/1955 25.22 01/31/1956 8.83 11/30/1957 11.89 09/08/1958 9.33 10/01/1959 12.78 07/28/1960 14.29 04/13/1961 10.90 02/14/1962 9.80 10/28/1963 9.72 01/14/1964 7.63 08/10/1965 8.92 09/14/1966 10.34 05/07/1967 10.46 05/03/1968 14.12 11/03/1969 15.09 02/03/1970 10.28 07/20/1971 12.87 11/03/1972 15.56 05/09/1973 14.38 08/05/1974 12.29 09/24/1975 15.16 06/20/1976 11.46 03/13/1977 14.62 11/28/1977 14.67 11/28/1978 16.75 03/06/1980 14.70 02/02/1981 11.78 05/23/1982 15.02 03/02/1983 19.28 04/05/1984 18.47 09/25/1985 14.82 11/06/1986 12.90 03/01/1987 13.12 07/09/1988 15.14 04/30/1989 17.04 04/01/1990 12.54 08/04/1991 13.60 06/21/1992 13.85 02/24/1993 15.76 06/25/1994 11.20 09/17/1995 20.84 09/13/1996 18.44