at Riesel, Texas

1937 Began Operation in June 1937	1938	1939	1940	1941	1942
1943	1944	1945	1946	1947	1948
1949	1950	1951	1952	1953	1954
1955	1956	1957	1958	1959	1960
1961	1962	1963	1964	1965	1966
1967	1968	1969	1970	1971	1972
1973	1974	1975	1976	1977	1978
1979	1980	1981	1982	1983	1984
1985	1986	1987	1988 Data Not Available 3/3 815 to 894 min	1989 Data incomplete Data questionable	1990
1991	1992	1993	1994	1995	1996
1997	1998	1999	2000	2001	2002
2003	2004	2005	2006	2007	2008
2009	2010	2011	2012	2013	2014
2015	2016	2016	2017	2018	2019

To Download Data click Watershed W1