Precipitation annual maximum series (inches) Station ID: 39-6427 Station name: PACTOLA DAM State: SD Latitude (decimal degrees): 44.0622 Longitude (decimal degrees): -103.4819 Elevation (feet): 4720 Duration: 15 minutes 07/27/1979 0.40 06/17/1980 0.90 07/18/1981 0.70 05/28/1982 0.50 06/02/1983 0.50 07/07/1984 0.70 07/15/1985 0.40 09/24/1986 0.60 05/23/1987 0.50 06/13/1988 0.30 08/22/1990 0.60 05/11/1991 0.60 07/26/1992 0.40 05/29/1993 0.30 09/13/1994 0.40 07/15/1995 0.60 05/30/1996 0.40 09/13/1998 1.20 08/21/1999 0.50 04/20/2000 0.40 07/07/2001 0.40 07/06/2002 0.80 08/09/2003 0.40 06/04/2004 0.60 03/28/2007 0.60 07/02/2009 1.30 Duration: 30 minutes 06/16/1979 0.40 06/17/1980 0.90 07/18/1981 1.10 06/22/1982 0.70 06/02/1983 0.70 07/07/1984 1.10 07/15/1985 0.50 09/24/1986 0.90 05/23/1987 0.50 06/15/1988 0.40 08/22/1990 0.90 05/11/1991 1.10 07/26/1992 0.50 06/07/1993 0.60 09/13/1994 0.50 07/15/1995 0.90 05/30/1996 0.70 09/13/1998 1.40 08/11/1999 0.60 07/10/2000 0.50 07/09/2001 0.60 07/06/2002 1.20 08/07/2003 0.40 06/04/2004 0.70 03/28/2007 0.60 07/02/2009 2.00 Duration: 45 minutes 06/16/1979 0.50 06/17/1980 0.90 07/18/1981 1.10 07/22/1982 0.90 06/02/1983 0.70 07/07/1984 1.10 05/26/1985 0.50 09/24/1986 1.40 05/23/1987 0.60 06/15/1988 0.50 08/22/1990 1.10 05/11/1991 1.50 07/26/1992 0.50 05/29/1993 0.60 09/13/1994 0.60 07/15/1995 1.00 05/30/1996 0.90 09/13/1998 1.50 08/11/1999 0.70 07/10/2000 0.70 07/09/2001 0.80 07/06/2002 1.30 08/07/2003 0.50 05/22/2004 0.70 03/28/2007 0.60 07/02/2009 2.00 Duration: 1 hour 05/21/1952 0.64 08/01/1953 0.83 05/22/1954 0.64 07/25/1955 0.85 08/06/1956 0.84 07/14/1957 2.03 05/30/1958 0.61 07/15/1959 0.92 05/24/1960 0.66 06/11/1961 0.55 07/28/1962 1.25 06/05/1963 1.12 05/02/1964 0.45 06/11/1965 0.92 08/02/1966 0.65 05/25/1967 0.70 06/06/1968 0.46 05/03/1969 1.05 08/05/1970 1.50 06/25/1971 0.65 06/09/1972 1.83 07/04/1973 1.45 07/17/1974 1.81 06/07/1975 0.56 06/16/1979 0.55 06/17/1980 0.83 07/18/1981 1.01 07/22/1982 0.92 07/29/1983 0.73 07/14/1984 1.01 05/26/1985 0.46 09/24/1986 1.56 05/23/1987 0.55 06/15/1988 0.46 08/22/1990 1.10 05/11/1991 1.65 07/26/1992 0.46 06/07/1993 0.64 10/15/1994 0.55 07/15/1995 1.01 05/30/1996 0.92 09/13/1998 1.38 08/11/1999 0.64 07/10/2000 0.73 07/07/2001 0.83 07/06/2002 1.19 08/07/2003 0.46 06/04/2004 0.73 03/28/2007 0.55 07/02/2009 1.83 Duration: 2 hours 05/22/1952 0.81 08/01/1953 0.98 05/22/1954 0.94 07/25/1955 1.03 08/06/1956 0.92 07/14/1957 2.25 05/30/1958 0.64 07/15/1959 0.98 05/24/1960 0.70 06/11/1961 0.58 06/14/1962 2.10 06/05/1963 1.34 06/08/1964 0.70 06/11/1965 0.97 08/31/1966 0.71 05/25/1967 0.82 06/06/1968 0.51 05/03/1969 1.34 08/05/1970 2.65 06/24/1971 0.72 06/09/1972 3.20 07/04/1973 1.62 07/17/1974 2.48 06/03/1975 0.73 06/16/1979 0.77 06/17/1980 0.87 07/18/1981 1.06 07/22/1982 1.15 07/29/1983 0.77 07/14/1984 1.06 05/26/1985 0.77 09/24/1986 1.64 05/23/1987 0.58 06/13/1988 0.67 08/22/1990 1.15 05/11/1991 1.83 07/26/1992 0.58 05/29/1993 0.67 10/15/1994 0.67 07/15/1995 1.44 05/30/1996 1.06 09/13/1998 1.54 07/17/1999 0.77 07/10/2000 0.77 07/07/2001 1.06 07/06/2002 1.25 08/07/2003 0.67 05/22/2004 0.96 03/28/2007 0.67 07/02/2009 1.92 Duration: 3 hours 05/21/1952 1.12 08/01/1953 1.03 05/22/1954 1.09 07/25/1955 1.10 08/06/1956 0.94 07/14/1957 2.29 05/30/1958 0.65 07/15/1959 1.00 05/24/1960 0.71 06/11/1961 0.59 06/14/1962 2.14 06/05/1963 1.37 06/08/1964 0.81 06/11/1965 1.25 07/01/1966 0.74 05/25/1967 0.93 06/06/1968 0.53 05/03/1969 1.44 08/05/1970 2.70 06/24/1971 0.74 06/09/1972 4.06 07/04/1973 1.65 07/17/1974 2.61 06/25/1975 0.74 06/16/1979 0.90 06/17/1980 0.90 07/18/1981 1.10 07/22/1982 1.20 07/29/1983 0.80 07/14/1984 1.10 05/26/1985 0.80 09/24/1986 2.00 05/23/1987 0.60 06/13/1988 0.70 08/22/1990 1.20 05/11/1991 1.90 07/26/1992 0.70 06/06/1993 0.80 10/15/1994 0.90 07/15/1995 1.60 05/30/1996 1.10 09/13/1998 1.60 07/17/1999 0.90 07/10/2000 0.80 07/07/2001 1.10 07/06/2002 1.30 08/07/2003 0.80 05/22/2004 1.10 05/05/2007 0.70 07/02/2009 2.00 Duration: 6 hours 05/21/1952 1.65 08/01/1953 1.93 05/22/1954 1.32 07/25/1955 1.26 08/06/1956 0.95 07/14/1957 3.01 05/30/1958 0.70 07/15/1959 1.02 05/24/1960 1.04 06/10/1961 0.60 06/14/1962 2.21 06/15/1963 1.44 06/08/1964 0.94 05/14/1965 1.51 09/13/1966 1.01 05/25/1967 1.09 06/06/1968 0.54 05/03/1969 1.55 08/05/1970 2.85 04/17/1971 1.20 06/09/1972 6.30 07/04/1973 1.73 07/17/1974 2.71 06/03/1975 1.02 06/16/1979 1.10 10/15/1980 1.30 07/18/1981 1.11 07/22/1982 1.21 06/29/1983 0.90 07/14/1984 1.11 05/26/1985 0.81 09/24/1986 2.02 05/20/1987 0.70 06/13/1988 0.80 07/20/1990 1.21 05/11/1991 2.00 03/04/1992 0.71 06/07/1993 1.30 10/15/1994 1.10 07/15/1995 1.70 07/06/1996 1.20 09/13/1998 1.90 06/02/1999 1.10 04/18/2000 0.90 07/07/2001 1.11 07/06/2002 1.40 08/07/2003 0.90 05/22/2004 1.30 05/05/2007 1.10 07/02/2009 2.02 Duration: 12 hours 05/21/1952 3.15 08/01/1953 1.98 05/22/1954 1.55 07/25/1955 1.27 05/27/1956 1.09 07/14/1957 3.04 03/31/1958 1.00 09/24/1959 1.03 05/24/1960 1.05 10/28/1961 0.77 06/14/1962 2.23 06/15/1963 1.72 06/08/1964 1.70 05/14/1965 2.62 09/13/1966 1.10 06/15/1967 1.22 06/23/1968 0.80 05/03/1969 1.60 08/05/1970 2.88 04/17/1971 1.21 06/09/1972 7.02 07/04/1973 1.75 07/17/1974 2.74 04/07/1975 1.28 06/14/1976 3.21 06/16/1979 1.20 10/15/1980 1.50 07/18/1981 1.20 05/19/1982 1.30 05/06/1983 1.10 04/25/1984 1.20 05/26/1985 0.82 09/24/1986 2.10 05/20/1987 0.80 06/13/1988 0.81 07/20/1990 1.30 05/11/1991 2.50 05/09/1992 0.90 06/06/1993 2.00 10/15/1994 1.80 05/07/1995 2.80 05/27/1996 1.21 09/13/1998 2.10 07/31/1999 1.50 04/18/2000 1.50 04/21/2001 1.20 09/09/2002 1.60 08/07/2003 1.30 05/22/2004 1.50 05/05/2007 1.70 07/02/2009 2.04 Duration: 1 day 05/22/1952 5.12 11/02/1956 1.50 07/14/1957 2.71 06/20/1958 1.10 05/20/1959 1.09 04/16/1960 0.96 10/28/1961 1.14 06/15/1962 2.46 09/01/1963 2.00 06/08/1964 1.89 05/15/1965 3.43 09/14/1966 0.98 06/12/1967 1.36 06/24/1968 0.88 05/04/1969 1.43 06/12/1970 2.99 04/20/1971 1.61 06/10/1972 7.16 04/20/1973 1.93 07/18/1974 2.46 04/08/1975 2.01 06/15/1976 4.20 07/04/1979 3.38 06/16/1980 1.52 05/16/1981 1.43 10/11/1982 2.44 05/07/1983 1.07 04/26/1984 1.96 05/27/1985 0.80 09/25/1986 2.16 05/21/1987 0.86 03/11/1988 1.13 09/21/1989 1.89 07/20/1990 1.52 05/12/1991 2.54 05/10/1992 0.93 06/07/1993 1.88 10/16/1994 2.15 05/08/1995 3.39 05/27/1996 1.61 05/26/1997 1.66 09/14/1998 2.32 08/01/1999 1.65 04/19/2000 2.27 07/10/2001 1.43 07/07/2002 1.43 05/23/2004 1.34 05/12/2005 1.61 09/23/2006 1.37 05/06/2007 1.70 07/03/2009 1.82 08/04/2010 1.69 Duration: 2 days 05/21/1952 6.38 05/27/1956 1.62 07/14/1957 2.92 04/22/1958 1.42 06/29/1959 1.51 05/24/1960 1.31 10/28/1961 1.23 06/17/1962 4.74 09/01/1963 2.15 06/08/1964 2.79 05/14/1965 4.42 04/18/1966 1.29 06/12/1967 1.88 06/24/1968 1.63 05/04/1969 1.54 08/06/1970 3.87 04/20/1971 2.00 06/10/1972 7.71 04/19/1973 2.47 07/18/1974 2.83 04/07/1975 2.26 06/14/1976 5.07 07/04/1979 3.64 10/15/1980 2.60 05/16/1981 2.83 10/11/1982 2.63 06/17/1983 1.25 04/25/1984 2.40 05/26/1985 0.98 09/25/1986 2.33 05/24/1987 1.15 03/11/1988 1.63 09/21/1989 2.04 07/20/1990 2.31 05/11/1991 2.95 05/10/1992 1.00 06/07/1993 2.14 10/16/1994 2.32 05/08/1995 4.04 05/27/1996 2.69 05/25/1997 2.91 09/13/1998 3.11 08/01/1999 1.78 04/19/2000 3.05 07/09/2001 2.60 09/09/2002 1.63 05/22/2004 2.02 05/11/2005 2.28 09/23/2006 1.48 05/05/2007 2.12 07/03/2009 2.14 08/03/2010 2.32 Duration: 3 days 05/20/1952 7.32 05/28/1956 1.64 07/14/1957 3.11 04/21/1958 1.49 06/28/1959 1.64 08/06/1960 1.43 10/28/1961 1.26 06/15/1962 4.79 04/27/1963 2.28 06/08/1964 2.82 05/14/1965 4.46 08/19/1966 1.65 06/11/1967 2.35 06/24/1968 1.65 05/04/1969 1.59 08/06/1970 3.91 04/20/1971 3.01 06/10/1972 7.79 04/19/1973 2.49 07/17/1974 2.93 04/07/1975 2.28 06/14/1976 5.12 07/03/1979 3.68 06/15/1980 2.63 05/16/1981 4.24 10/11/1982 2.66 06/17/1983 1.27 04/25/1984 2.77 05/26/1985 1.01 09/23/1986 2.35 05/24/1987 1.44 08/02/1988 2.10 09/21/1989 2.06 07/20/1990 2.41 05/11/1991 2.98 05/10/1992 1.01 05/06/1993 2.24 10/16/1994 2.55 05/08/1995 4.27 05/26/1996 2.72 05/25/1997 3.26 09/12/1998 3.16 06/13/1999 2.14 04/19/2000 3.08 07/08/2001 3.05 09/08/2002 1.66 05/21/2004 2.04 05/10/2005 2.59 05/29/2006 1.53 05/05/2007 2.20 07/03/2009 2.16 05/10/2010 2.37 Duration: 4 days 05/19/1952 7.41 05/27/1956 1.93 07/13/1957 3.16 04/22/1958 1.66 06/28/1959 1.66 08/06/1960 1.44 06/11/1961 1.43 06/15/1962 5.24 06/05/1963 2.52 06/06/1964 3.15 05/14/1965 4.51 08/19/1966 1.67 06/09/1967 2.85 06/24/1968 1.67 07/18/1969 1.98 08/06/1970 3.95 04/18/1971 3.39 06/10/1972 7.87 04/19/1973 2.52 07/18/1974 2.96 04/07/1975 2.30 06/12/1976 5.34 07/02/1979 3.72 06/15/1980 2.66 05/16/1981 4.28 07/23/1982 2.69 08/19/1983 1.44 04/25/1984 2.84 05/26/1985 1.02 09/25/1986 2.39 05/24/1987 1.66 08/02/1988 2.15 08/17/1989 2.08 07/19/1990 2.48 05/12/1991 3.01 07/27/1992 1.25 05/05/1993 2.62 10/16/1994 2.58 05/07/1995 4.44 05/24/1996 3.94 05/23/1997 3.33 06/17/1998 3.46 06/03/1999 2.35 04/19/2000 3.11 07/07/2001 3.49 09/08/2002 1.68 05/21/2004 2.13 05/09/2005 2.77 05/29/2006 1.55 05/04/2007 2.30 07/01/2009 2.21 06/11/2010 2.79 Duration: 7 days 05/16/1952 7.80 05/25/1956 2.05 05/24/1957 3.32 06/08/1958 2.47 07/11/1959 2.06 08/06/1960 1.46 06/08/1961 1.58 06/15/1962 6.36 06/02/1963 3.50 06/04/1964 3.47 05/09/1965 5.93 08/19/1966 1.69 06/10/1967 4.48 06/04/1968 2.28 07/16/1969 2.78 08/06/1970 3.99 04/20/1971 4.96 06/05/1972 9.65 04/19/1973 2.65 07/14/1974 3.20 04/02/1975 2.33 06/12/1976 5.47 06/28/1979 3.76 06/15/1980 2.69 05/12/1981 4.67 05/14/1982 3.61 05/07/1983 1.90 06/09/1984 3.46 11/08/1985 1.14 09/19/1986 2.82 05/21/1987 2.52 08/02/1988 2.17 08/16/1989 2.20 07/16/1990 3.44 05/12/1991 5.07 06/29/1992 1.53 06/01/1993 3.35 10/16/1994 2.61 05/08/1995 4.86 05/23/1996 5.18 05/22/1997 3.92 06/14/1998 3.79 06/10/1999 3.26 04/19/2000 3.68 07/04/2001 3.92 09/08/2002 2.06 05/17/2004 2.41 05/07/2005 2.90 08/27/2006 2.07 05/04/2007 2.32 06/27/2009 2.52 06/08/2010 3.15 Duration: 10 days 05/13/1952 9.02 05/21/1956 2.15 05/12/1957 4.20 06/11/1958 2.69 06/21/1959 2.88 08/06/1960 1.73 06/08/1961 1.60 06/15/1962 7.41 06/02/1963 4.05 05/31/1964 3.93 05/08/1965 6.33 08/12/1966 2.48 06/07/1967 5.83 05/31/1968 2.61 07/16/1969 3.53 08/06/1970 4.06 04/18/1971 6.52 06/02/1972 11.07 04/19/1973 2.85 07/14/1974 3.45 06/17/1975 3.05 06/06/1976 5.67 06/25/1979 5.19 06/15/1980 2.71 05/14/1981 4.99 05/12/1982 3.97 06/09/1983 2.48 07/01/1984 4.13 05/26/1985 1.34 09/25/1986 4.13 05/21/1987 2.98 06/12/1988 2.19 08/12/1989 2.22 07/16/1990 3.50 05/11/1991 5.56 06/26/1992 1.89 05/30/1993 4.24 10/07/1994 3.27 04/30/1995 5.42 05/23/1996 6.47 05/25/1997 5.01 09/13/1998 4.34 06/06/1999 4.28 04/16/2000 3.85 07/03/2001 4.24 09/09/2002 2.15 05/16/2004 2.52 05/07/2005 2.93 08/26/2006 2.22 08/16/2007 2.35 07/03/2009 2.80 06/08/2010 3.48 Duration: 20 days 05/04/1952 9.83 05/12/1956 2.95 05/12/1957 7.62 06/01/1958 4.35 06/28/1959 4.05 05/24/1960 2.53 07/06/1961 1.98 05/14/1962 10.48 06/02/1963 7.20 05/28/1964 5.30 05/08/1965 9.01 08/03/1966 3.75 05/30/1967 7.92 06/06/1968 4.70 07/06/1969 4.06 05/25/1970 6.19 04/18/1971 6.99 06/02/1972 13.41 04/19/1973 4.09 07/02/1974 3.97 06/02/1975 4.63 05/30/1976 6.78 06/16/1979 8.22 05/31/1980 3.27 05/04/1981 6.94 05/10/1982 6.22 05/31/1983 3.60 07/01/1984 5.50 05/23/1985 2.03 09/15/1986 4.87 05/13/1987 3.59 06/12/1988 2.87 09/07/1989 4.01 07/08/1990 4.42 05/11/1991 7.67 06/24/1992 3.02 05/30/1993 6.02 10/02/1994 4.53 04/30/1995 6.58 05/13/1996 6.99 05/25/1997 5.70 06/03/1998 6.04 05/27/1999 6.30 04/19/2000 4.53 07/27/2001 4.91 04/27/2002 3.27 05/17/2004 3.57 05/07/2005 3.75 05/27/2006 2.58 04/19/2007 3.76 06/14/2009 4.50 05/06/2010 5.31 Duration: 30 days 05/04/1952 10.14 05/01/1956 3.48 05/12/1957 8.49 05/22/1958 6.02 06/21/1959 5.29 05/24/1960 3.03 06/11/1961 2.77 05/21/1962 13.02 05/25/1963 8.27 06/04/1964 6.09 05/05/1965 9.81 07/24/1966 4.83 05/26/1967 10.15 05/27/1968 5.87 06/25/1969 4.84 05/23/1970 6.50 04/18/1971 8.30 05/22/1972 14.25 04/07/1973 4.42 07/02/1974 4.33 05/29/1975 5.87 05/21/1976 9.91 06/17/1979 9.51 05/25/1980 3.63 05/03/1981 7.46 05/10/1982 7.25 06/03/1983 4.97 06/09/1984 7.04 07/14/1985 2.44 09/06/1986 6.42 05/02/1987 4.12 05/18/1988 3.51 08/16/1989 4.49 07/08/1990 4.81 05/11/1991 10.55 06/14/1992 4.23 05/22/1993 7.58 10/02/1994 4.66 05/07/1995 7.78 05/09/1996 8.04 05/22/1997 6.81 09/12/1998 6.79 05/15/1999 7.00 04/19/2000 6.73 06/13/2001 5.50 09/09/2002 3.77 05/12/2004 3.87 05/10/2005 5.00 08/26/2006 3.93 05/04/2007 4.48 06/06/2009 6.07 04/23/2010 6.36 Duration: 45 days 05/15/1952 12.01 05/25/1956 4.85 05/08/1957 11.66 05/22/1958 7.07 05/20/1959 6.29 05/18/1960 3.93 06/11/1961 3.78 05/13/1962 18.84 05/25/1963 9.95 05/02/1964 8.63 05/05/1965 13.33 07/08/1966 6.05 05/24/1967 10.69 05/16/1968 7.53 06/07/1969 6.38 05/08/1970 8.89 04/18/1971 11.63 05/09/1972 16.25 04/19/1973 5.81 07/02/1974 5.02 05/29/1975 6.83 05/12/1976 10.98 06/15/1979 13.26 05/10/1980 5.10 05/03/1981 8.85 05/10/1982 10.30 05/07/1983 5.79 06/01/1984 10.14 07/16/1985 3.53 08/22/1986 8.55 05/02/1987 4.52 05/18/1988 4.26 08/10/1989 6.65 07/10/1990 6.33 05/11/1991 12.85 06/16/1992 6.04 05/05/1993 10.32 09/14/1994 5.24 04/30/1995 11.44 05/23/1996 9.41 04/29/1997 8.54 05/08/1998 8.32 05/04/1999 8.69 04/15/2000 7.87 06/30/2001 9.54 08/06/2002 4.82 04/22/2004 5.10 05/10/2005 6.95 05/08/2006 4.36 04/19/2007 5.94 06/02/2009 7.66 05/06/2010 9.46 Duration: 60 days 05/15/1952 13.66 05/10/1956 5.88 04/18/1957 12.43 05/22/1958 8.16 05/19/1959 8.46 05/18/1960 5.24 06/08/1961 4.38 05/15/1962 20.35 04/18/1963 12.27 05/02/1964 10.43 05/08/1965 15.06 07/20/1966 7.53 04/30/1967 12.11 05/22/1968 8.16 06/07/1969 7.41 04/15/1970 10.67 04/18/1971 12.62 05/10/1972 18.28 03/14/1973 6.91 05/28/1974 6.35 04/28/1975 8.56 04/26/1976 13.66 06/16/1979 14.73 05/05/1980 5.24 04/26/1981 9.53 05/09/1982 11.35 05/07/1983 7.26 05/26/1984 11.74 07/16/1985 4.80 08/05/1986 10.23 05/13/1987 5.28 06/12/1988 5.76 07/25/1989 7.76 07/08/1990 6.87 05/11/1991 15.02 06/04/1992 7.33 04/26/1993 11.89 08/31/1994 5.74 04/30/1995 12.70 05/09/1996 10.79 04/05/1997 9.47 09/12/1998 10.25 04/21/1999 10.79 04/03/2000 8.23 06/20/2001 10.22 08/04/2002 5.55 05/17/2004 5.71 04/20/2005 8.28 07/27/2006 5.82 04/19/2007 6.58 05/21/2009 8.24 04/23/2010 11.80