Precipitation annual maximum series (inches) Station ID: 27-0741 Station name: BLACKWATER DAM State: NH Latitude (decimal degrees): 43.3167 Longitude (decimal degrees): -71.7167 Elevation (feet): 600 Duration: 15 minutes 12/01/1971 0.40 07/19/1972 1.70 06/30/1973 0.80 09/29/1974 0.40 07/13/1975 0.30 05/18/1976 0.50 08/05/1977 0.60 06/19/1978 0.70 07/01/1979 0.60 06/30/1980 0.60 06/22/1981 0.70 06/14/1983 0.50 06/29/1984 0.90 06/18/1985 0.60 07/26/1986 0.60 04/29/1987 0.80 07/27/1988 0.60 07/10/1989 0.40 08/10/1990 1.00 05/17/1991 0.60 09/10/1993 0.50 07/08/1995 0.90 08/11/1997 0.40 06/16/1998 0.60 09/04/2002 0.40 08/18/2003 0.90 Duration: 30 minutes 07/19/1971 0.50 07/19/1972 2.20 06/30/1973 1.40 09/03/1974 0.50 07/13/1975 0.50 07/11/1976 0.90 08/01/1977 0.60 06/19/1978 1.00 07/01/1979 1.20 06/30/1980 0.70 06/22/1981 0.80 06/14/1983 0.60 06/29/1984 1.40 10/05/1985 0.70 06/01/1986 0.60 04/29/1987 0.90 07/27/1988 0.90 08/13/1989 0.60 08/10/1990 1.30 05/17/1991 0.70 09/10/1993 0.60 07/08/1995 1.40 08/11/1997 0.70 06/16/1998 0.80 09/04/2002 0.50 07/08/2004 1.40 Duration: 45 minutes 07/19/1971 0.50 07/19/1972 2.70 06/30/1973 1.60 09/02/1974 0.60 07/24/1975 0.60 07/11/1976 1.00 08/01/1977 0.80 06/19/1978 1.10 07/01/1979 1.60 06/30/1980 0.70 08/05/1981 0.90 06/14/1983 0.70 06/29/1984 1.40 10/05/1985 0.70 06/01/1986 0.60 04/29/1987 0.90 07/27/1988 1.30 08/13/1989 0.80 08/10/1990 1.40 05/17/1991 0.80 09/10/1993 0.60 07/08/1995 1.50 06/01/1997 0.70 06/16/1998 0.90 09/04/2002 0.70 08/18/2003 1.50 07/08/2004 1.50 Duration: 1 hour 07/06/1948 1.16 09/14/1949 0.81 11/26/1950 0.73 08/16/1951 0.66 07/27/1952 0.75 07/20/1953 0.81 08/31/1954 1.70 05/31/1955 0.62 07/13/1956 1.27 06/26/1957 1.15 07/11/1958 0.85 08/10/1959 0.62 09/12/1960 0.82 07/02/1961 0.62 07/26/1962 0.91 06/28/1963 0.75 08/12/1964 0.63 08/19/1965 0.47 06/07/1966 1.02 10/26/1967 0.39 09/25/1968 0.74 07/12/1969 0.90 07/16/1970 0.60 07/29/1971 0.56 07/19/1972 2.69 06/30/1973 1.48 04/14/1974 0.65 07/24/1975 0.65 07/11/1976 1.11 08/01/1977 0.83 06/19/1978 1.02 07/01/1979 1.57 06/30/1980 0.65 06/14/1983 0.65 06/29/1984 1.30 06/18/1985 0.74 06/01/1986 0.56 04/29/1987 0.83 07/27/1988 1.39 08/13/1989 0.74 08/10/1990 1.48 05/17/1991 0.74 09/10/1993 0.65 07/08/1995 1.48 06/01/1997 0.74 06/16/1998 0.93 09/04/2002 0.74 08/18/2003 1.50 07/08/2004 1.50 Duration: 2 hours 07/06/1948 1.31 09/14/1949 0.90 11/26/1950 0.95 07/05/1951 1.11 07/27/1952 1.36 07/20/1953 1.50 08/31/1954 2.75 10/31/1955 0.96 07/13/1956 1.56 06/26/1957 1.23 07/11/1958 1.10 10/24/1959 0.91 09/12/1960 1.60 08/29/1961 0.95 07/26/1962 1.24 06/28/1963 0.83 06/24/1964 1.00 09/13/1965 0.68 06/07/1966 1.62 10/26/1967 0.49 09/25/1968 0.96 07/29/1969 1.40 07/16/1970 0.62 07/29/1971 1.06 07/19/1972 3.65 06/30/1973 1.73 09/02/1974 0.77 04/03/1975 0.77 07/11/1976 1.35 09/20/1977 1.06 06/19/1978 1.73 07/01/1979 1.63 06/30/1980 0.87 08/05/1983 0.96 06/29/1984 1.73 07/31/1985 1.15 07/26/1986 0.67 10/28/1987 0.96 07/27/1988 1.63 08/13/1989 0.87 08/10/1990 2.12 08/19/1991 1.06 09/10/1993 0.68 07/08/1995 1.54 08/13/1997 0.87 06/16/1998 1.15 09/04/2002 1.25 08/18/2003 2.12 Duration: 3 hours 07/06/1948 1.34 09/14/1949 0.92 11/26/1950 1.23 07/05/1951 1.18 07/27/1952 1.46 07/20/1953 1.69 08/31/1954 3.07 10/31/1955 1.13 07/13/1956 1.62 06/26/1957 1.29 07/11/1958 1.12 10/24/1959 1.12 09/12/1960 2.39 08/29/1961 0.97 07/26/1962 1.28 06/28/1963 0.85 06/24/1964 1.10 09/13/1965 0.81 06/07/1966 1.91 10/26/1967 0.64 09/25/1968 1.39 07/29/1969 1.50 02/11/1970 0.80 07/29/1971 1.20 07/19/1972 3.80 06/30/1973 1.90 09/03/1974 1.00 04/03/1975 1.10 07/11/1976 1.50 09/20/1977 1.50 06/19/1978 2.20 07/01/1979 1.70 06/30/1980 1.10 09/21/1983 1.30 06/29/1984 1.80 07/31/1985 1.60 07/02/1986 0.80 06/22/1987 1.10 07/27/1988 1.70 10/20/1989 0.90 08/10/1990 2.50 08/19/1991 1.70 12/21/1993 0.90 07/08/1995 1.60 08/13/1997 1.00 06/16/1998 1.20 09/04/2002 1.30 08/13/2003 2.20 Duration: 6 hours 07/06/1948 1.35 09/14/1949 0.94 11/25/1950 1.67 02/07/1951 1.36 06/01/1952 1.81 07/20/1953 1.84 08/31/1954 3.86 05/31/1955 1.83 07/13/1956 1.96 08/10/1957 1.80 11/28/1958 1.26 10/24/1959 1.46 09/12/1960 3.52 08/29/1961 0.99 10/06/1962 1.63 09/29/1963 1.33 01/20/1964 1.15 09/13/1965 1.18 06/07/1966 1.93 11/15/1967 0.84 09/25/1968 1.70 12/26/1969 1.80 08/23/1970 1.50 10/10/1971 1.50 07/19/1972 3.84 08/02/1973 2.80 09/03/1974 1.30 10/11/1975 1.70 07/11/1976 1.60 09/20/1977 2.10 06/19/1978 2.30 07/01/1979 1.80 10/25/1980 1.60 09/21/1983 1.70 06/29/1984 1.90 07/31/1985 2.40 07/02/1986 1.20 06/22/1987 1.70 11/01/1988 1.90 05/02/1989 1.30 08/10/1990 3.90 08/19/1991 3.00 12/21/1993 1.40 10/28/1995 1.80 06/01/1997 1.20 06/13/1998 1.60 09/16/1999 3.00 09/04/2002 1.31 Duration: 12 hours 11/19/1948 1.60 01/05/1949 1.24 11/25/1950 2.55 11/03/1951 2.12 06/01/1952 2.06 08/04/1953 1.96 08/31/1954 4.37 05/31/1955 1.86 07/13/1956 2.05 08/10/1957 2.60 11/28/1958 1.62 10/24/1959 2.07 09/12/1960 4.15 08/29/1961 1.29 10/06/1962 2.61 11/07/1963 1.86 11/25/1964 1.60 09/13/1965 1.26 08/22/1966 2.19 12/12/1967 1.29 09/25/1968 1.75 12/26/1969 2.50 02/10/1970 2.40 10/10/1971 2.00 07/19/1972 3.88 06/29/1973 3.00 09/03/1974 1.70 09/26/1975 2.40 10/20/1976 1.90 09/20/1977 2.60 06/19/1978 2.40 05/24/1979 1.90 10/25/1980 2.00 11/04/1983 2.70 05/29/1984 2.60 07/31/1985 2.90 12/02/1986 1.80 06/22/1987 2.90 11/01/1988 2.70 05/02/1989 2.10 08/10/1990 4.10 08/19/1991 3.90 12/21/1993 1.70 10/27/1995 2.80 10/20/1996 3.50 08/21/1997 1.90 06/13/1998 2.10 09/16/1999 5.00 09/04/2002 1.40 07/12/2006 3.10 Duration: 1 day 01/06/1949 1.73 11/26/1950 2.37 11/03/1951 2.47 12/12/1952 2.53 08/05/1953 2.03 08/31/1954 4.05 10/31/1955 1.78 07/14/1956 1.87 08/11/1957 2.34 01/15/1958 1.72 09/01/1959 2.40 09/13/1960 4.39 08/30/1961 1.40 10/07/1962 3.97 11/08/1963 2.50 01/21/1964 2.01 09/14/1965 1.41 08/23/1966 2.14 12/29/1967 1.39 04/25/1968 1.68 12/27/1969 3.60 02/11/1970 2.44 10/11/1971 1.89 07/20/1972 3.50 08/03/1973 4.05 09/04/1974 2.31 10/12/1975 2.25 10/21/1976 2.16 09/21/1977 2.70 06/20/1978 2.16 05/25/1979 2.70 10/26/1980 1.80 02/26/1981 2.65 06/30/1982 1.73 11/05/1983 2.97 05/30/1984 3.33 08/01/1985 2.79 01/27/1986 2.34 06/23/1987 3.42 11/02/1988 3.12 10/21/1989 2.25 08/11/1990 4.05 08/19/1991 4.32 12/21/1993 1.53 10/28/1995 2.79 10/20/1996 5.68 08/21/1997 1.98 06/13/1998 2.70 09/16/1999 5.77 06/07/2000 1.94 06/03/2001 2.42 05/14/2002 1.90 08/13/2003 2.60 07/15/2004 2.10 10/09/2005 6.00 05/14/2006 6.68 Duration: 2 days 01/05/1949 1.95 08/31/1950 3.17 11/03/1951 2.64 12/11/1952 3.14 03/26/1953 2.17 08/31/1954 4.39 11/04/1955 2.19 07/13/1956 2.05 10/08/1957 3.77 01/22/1958 2.01 10/24/1959 3.12 09/12/1960 5.75 08/29/1961 1.49 10/06/1962 6.45 11/08/1963 3.77 01/21/1964 2.15 10/08/1965 1.52 08/22/1966 3.51 12/12/1967 1.54 03/18/1968 2.12 12/27/1969 3.85 02/11/1970 2.60 10/10/1971 2.02 07/20/1972 3.75 06/30/1973 5.00 09/03/1974 3.08 09/26/1975 2.98 01/27/1976 2.40 09/21/1977 3.08 05/16/1978 3.37 05/25/1979 3.94 04/10/1980 2.13 02/25/1981 4.25 08/09/1982 1.85 11/04/1983 3.46 05/30/1984 5.00 09/06/1985 2.98 01/26/1986 3.94 06/23/1987 3.81 11/02/1988 3.33 10/20/1989 2.94 08/11/1990 4.42 08/19/1991 4.81 12/21/1993 1.63 10/27/1995 2.98 10/20/1996 7.40 08/21/1997 2.31 06/13/1998 4.42 09/16/1999 6.54 12/17/2000 2.20 06/02/2001 2.77 05/13/2002 2.53 08/12/2003 3.80 04/01/2004 3.40 10/08/2005 8.25 05/14/2006 9.89 04/16/2007 5.00 Duration: 3 days 01/05/1949 1.97 08/30/1950 3.51 11/01/1951 2.97 12/11/1952 3.40 03/25/1953 2.38 08/29/1954 4.55 05/30/1955 2.85 07/13/1956 2.13 10/07/1957 3.84 01/15/1958 2.22 10/23/1959 3.25 09/12/1960 6.00 07/15/1961 1.60 10/06/1962 6.83 11/07/1963 4.57 01/21/1964 2.21 10/08/1965 1.58 08/22/1966 3.68 04/16/1967 1.84 03/18/1968 2.21 12/26/1969 4.00 05/17/1970 2.63 10/10/1971 2.05 07/20/1972 4.10 06/29/1973 5.21 09/02/1974 3.25 09/25/1975 3.36 01/26/1976 2.50 04/23/1977 3.17 05/15/1978 3.51 05/24/1979 4.19 04/09/1980 2.15 02/24/1981 4.70 06/06/1982 2.05 11/04/1983 3.66 05/29/1984 6.08 09/06/1985 3.09 01/26/1986 4.10 04/05/1987 3.85 04/29/1988 3.36 10/19/1989 2.97 08/10/1990 4.70 08/19/1991 5.40 12/21/1993 1.70 10/27/1995 3.10 10/20/1996 7.70 04/18/1997 2.48 06/12/1998 4.60 09/16/1999 6.80 12/17/2000 2.22 06/02/2001 3.10 05/13/2002 2.63 08/12/2003 4.10 04/01/2004 3.47 10/08/2005 8.37 05/13/2006 10.74 04/16/2007 5.65 Duration: 4 days 01/05/1949 1.99 08/30/1950 3.54 03/31/1951 3.05 12/11/1952 3.43 03/13/1953 3.50 08/29/1954 4.60 05/30/1955 2.88 01/09/1956 2.53 10/07/1957 3.88 01/15/1958 2.24 10/23/1959 3.40 09/12/1960 6.06 08/27/1961 2.18 10/06/1962 6.90 11/06/1963 4.77 01/21/1964 2.23 10/08/1965 1.61 08/22/1966 3.72 04/16/1967 2.29 06/26/1968 2.53 12/26/1969 4.04 05/17/1970 2.66 10/10/1971 2.07 07/20/1972 4.50 06/28/1973 6.05 09/02/1974 3.33 09/24/1975 3.67 01/25/1976 2.54 04/23/1977 3.20 05/16/1978 3.54 05/24/1979 4.32 06/30/1980 2.19 02/24/1981 4.86 01/02/1982 2.80 11/04/1983 3.70 05/29/1984 6.95 09/06/1985 3.12 01/26/1986 4.14 04/05/1987 4.15 04/29/1988 3.40 10/18/1989 4.24 08/08/1990 6.70 08/18/1991 5.50 03/29/1993 2.34 10/27/1995 3.13 10/20/1996 7.80 04/18/1997 2.50 06/13/1998 5.80 09/16/1999 6.87 12/15/2000 2.54 06/02/2001 3.13 05/13/2002 2.66 08/11/2003 4.30 04/01/2004 3.50 10/08/2005 8.45 05/13/2006 11.33 Duration: 7 days 12/31/1948 2.76 08/30/1950 3.86 11/01/1951 4.03 12/06/1952 5.15 03/13/1953 3.68 09/11/1954 4.66 10/31/1955 4.00 01/08/1956 3.48 10/07/1957 3.92 01/22/1958 3.73 10/23/1959 3.43 09/12/1960 6.12 04/11/1961 2.28 10/06/1962 7.00 11/06/1963 5.08 01/21/1964 3.13 10/02/1965 1.99 08/22/1966 4.11 04/15/1967 2.45 06/25/1968 3.49 12/22/1969 5.00 02/11/1970 2.90 11/25/1971 2.60 07/20/1972 5.22 06/30/1973 6.63 08/29/1974 4.60 09/21/1975 4.52 01/27/1976 3.76 09/21/1977 4.78 05/15/1978 3.82 05/24/1979 4.94 03/08/1980 2.83 02/20/1981 6.15 06/02/1982 3.92 11/04/1983 3.74 05/29/1984 7.72 09/06/1985 3.35 01/21/1986 4.33 06/23/1987 5.92 07/22/1988 5.07 10/15/1989 4.45 08/06/1990 7.72 08/15/1991 5.90 03/24/1993 2.40 10/27/1995 4.80 10/15/1996 7.90 04/13/1997 2.63 06/12/1998 6.70 09/10/1999 8.80 12/14/2000 3.19 09/19/2001 4.20 05/13/2002 3.58 08/12/2003 6.00 03/27/2004 3.80 10/09/2005 10.04 05/12/2006 12.24 Duration: 10 days 12/29/1948 4.09 11/26/1950 4.01 10/25/1951 4.38 12/05/1952 5.40 03/13/1953 3.77 09/11/1954 5.16 10/31/1955 4.13 01/08/1956 3.55 10/07/1957 3.96 01/15/1958 4.40 10/23/1959 3.95 09/12/1960 7.87 08/21/1961 2.74 09/28/1962 7.90 11/01/1963 5.67 01/21/1964 3.50 10/02/1965 2.40 08/22/1966 4.15 04/15/1967 2.78 06/23/1968 3.52 07/27/1969 5.48 02/03/1970 4.64 11/21/1971 3.20 07/17/1972 5.42 06/28/1973 7.49 08/29/1974 4.87 10/12/1975 5.34 01/25/1976 3.88 10/09/1977 5.11 05/09/1978 4.11 05/20/1979 5.35 03/09/1980 3.40 02/20/1981 6.40 05/30/1982 4.23 12/05/1983 4.79 05/29/1984 8.06 08/30/1985 4.30 01/20/1986 4.99 03/31/1987 6.13 07/18/1988 5.84 06/07/1989 5.25 08/06/1990 8.00 08/10/1991 6.20 03/24/1993 3.30 10/21/1995 5.20 10/15/1996 8.00 08/13/1997 3.60 06/07/1998 6.90 09/07/1999 9.60 12/11/2000 3.49 06/03/2001 5.24 08/28/2002 3.88 08/10/2003 6.30 07/08/2004 4.20 10/08/2005 13.46 05/13/2006 12.95 Duration: 20 days 12/19/1948 4.32 11/20/1950 6.18 03/15/1951 5.63 12/05/1952 6.65 03/13/1953 7.48 08/31/1954 9.74 10/31/1955 5.63 09/07/1956 4.59 10/07/1957 5.18 01/08/1958 7.15 11/24/1959 5.87 09/02/1960 8.90 04/14/1961 3.69 09/26/1962 8.90 10/28/1963 6.70 01/10/1964 4.78 02/08/1965 3.01 08/22/1966 6.39 04/07/1967 4.34 06/12/1968 6.01 12/09/1969 7.82 01/29/1970 5.19 11/22/1971 4.31 11/20/1972 6.08 06/16/1973 8.83 08/28/1974 5.65 09/23/1975 6.53 05/02/1976 5.16 09/21/1977 8.97 01/08/1978 6.94 09/22/1979 6.53 03/08/1980 5.46 02/08/1981 8.01 05/20/1982 5.85 11/25/1983 7.75 05/13/1984 9.52 08/25/1985 6.26 06/02/1986 6.22 06/14/1987 6.95 07/15/1988 7.54 10/03/1989 5.92 08/07/1990 9.78 08/04/1991 7.60 03/13/1993 5.04 10/27/1995 8.60 10/03/1996 9.70 08/11/1997 5.20 06/12/1998 9.00 09/07/1999 11.00 04/09/2000 5.00 05/24/2001 6.41 11/04/2002 5.43 08/02/2003 8.80 07/08/2004 6.70 10/08/2005 17.43 05/03/2006 14.42 Duration: 30 days 12/30/1948 6.07 11/16/1950 6.67 10/07/1951 7.12 11/16/1952 7.54 03/13/1953 8.48 08/29/1954 10.37 10/07/1955 7.68 01/09/1956 5.30 10/07/1957 8.13 01/01/1958 8.88 11/14/1959 6.69 09/02/1960 9.62 07/03/1961 4.80 10/06/1962 9.48 11/01/1963 7.60 01/10/1964 5.57 09/14/1965 4.57 08/12/1966 7.70 04/17/1967 5.56 06/03/1968 7.96 07/13/1969 8.39 02/03/1970 5.68 02/05/1971 5.56 11/03/1972 8.38 12/05/1973 10.23 08/24/1974 6.82 09/21/1975 9.75 04/23/1976 6.95 09/21/1977 12.14 01/09/1978 7.52 01/01/1979 7.69 03/08/1980 6.18 01/30/1981 9.41 06/01/1982 8.26 11/16/1983 10.47 05/04/1984 11.67 11/05/1985 6.89 07/13/1986 7.46 03/31/1987 8.56 07/18/1988 9.22 10/12/1989 7.50 08/06/1990 10.12 09/18/1991 8.50 03/29/1993 6.40 10/21/1995 11.10 09/22/1996 11.50 04/18/1997 6.10 05/30/1998 10.60 09/07/1999 13.61 03/28/2000 7.40 06/02/2001 7.27 10/26/2002 6.43 07/22/2003 9.40 07/08/2004 7.92 09/27/2005 18.29 05/13/2006 19.17 Duration: 45 days 12/29/1948 7.34 10/29/1950 8.01 06/14/1951 9.88 12/05/1952 10.47 03/04/1953 11.17 08/29/1954 10.94 09/24/1955 9.76 02/02/1956 6.92 10/07/1957 10.29 12/10/1957 11.25 10/24/1959 9.99 08/08/1960 11.23 03/29/1961 6.00 09/28/1962 12.20 10/28/1963 9.87 01/07/1964 6.59 08/30/1965 5.97 08/12/1966 9.56 04/07/1967 7.84 05/18/1968 10.97 06/16/1969 9.59 08/21/1970 6.95 02/05/1971 7.56 11/03/1972 11.52 11/28/1973 12.08 08/24/1974 8.09 09/12/1975 11.00 06/28/1976 9.02 09/06/1977 14.38 05/09/1978 10.19 08/28/1979 10.48 03/06/1980 8.92 06/23/1981 10.13 05/20/1982 10.18 11/04/1983 15.41 05/29/1984 15.65 08/01/1985 9.43 06/02/1986 10.08 05/24/1987 10.08 07/17/1988 12.52 05/03/1989 10.50 08/07/1990 12.06 08/15/1991 12.60 03/13/1993 9.00 10/03/1995 15.10 09/16/1996 13.00 04/18/1997 8.10 05/30/1998 11.60 08/21/1999 15.93 03/28/2000 9.15 05/27/2001 8.42 04/29/2002 8.93 07/11/2003 11.60 07/08/2004 9.81 10/08/2005 19.88 05/13/2006 22.20 Duration: 60 days 08/29/1949 7.34 10/10/1950 9.91 06/23/1951 11.72 12/06/1952 12.50 03/04/1953 13.93 07/28/1954 12.65 09/24/1955 11.46 01/09/1956 8.99 09/23/1957 10.84 12/01/1957 14.60 10/18/1959 12.24 07/26/1960 12.93 07/03/1961 7.61 09/26/1962 13.45 10/28/1963 10.51 01/14/1964 8.29 08/19/1965 7.00 08/22/1966 11.44 03/29/1967 9.30 05/04/1968 12.43 11/03/1969 14.05 02/03/1970 11.36 07/18/1971 8.99 11/03/1972 14.82 05/09/1973 15.21 03/17/1974 10.13 09/24/1975 14.30 12/10/1975 10.03 09/11/1977 16.01 12/01/1977 13.02 08/11/1979 12.78 03/06/1980 10.24 06/21/1981 11.63 05/31/1982 11.49 11/04/1983 17.37 05/12/1984 18.14 08/01/1985 10.94 06/11/1986 13.70 05/06/1987 10.86 07/17/1988 14.00 05/01/1989 12.07 07/23/1990 13.68 08/19/1991 15.50 02/12/1993 10.20 09/17/1995 17.40 10/20/1996 17.90 03/22/1997 9.57 05/03/1998 14.10 07/20/1999 18.92 03/28/2000 11.52 05/28/2001 9.82 11/06/2002 11.22 08/02/2003 13.91 04/01/2004 12.58 10/08/2005 22.61 05/03/2006 26.27