Huntington Lk — storage

Storage now, against this reservoir's own record

85.29 Mm³

Stored, September 2025

16th

Percentile among 99 Seps on record

-12.8%

Against the Sep 1991–2020 average

-8.5%

Change over the 12 months to 2025-09

Storage in September 2025 was lower than most Seps on record, ranked against 99 other Seps held for this reservoir.

Storage, 1926–2025

Monthly mean storage

1,188 monthly values, 1926 to 2025

Monthly means of the publisher's daily record. Volume, not percentage of capacity: without a capacity whose definition is stated, fullness cannot be computed.

View the data behind this chart

Underlying data
Period	Huntington Lk Nr Big Creek CA (Mm³)
October 1926	78.7
November 1926	60.0
December 1926	51.3
January 1927	32.9
February 1927	21.1
March 1927	18.3
April 1927	22.3
May 1927	67.6
June 1927	107
July 1927	107
August 1927	108
September 1927	105
October 1927	95.3
November 1927	80.3
December 1927	75.9
January 1928	47.9
February 1928	24.1
March 1928	13.8
April 1928	34.1
May 1928	86.3
June 1928	109
July 1928	108
August 1928	107
September 1928	105
October 1928	79.0
November 1928	48.7
December 1928	22.4
January 1929	16.3
February 1929	11.6
March 1929	4.44
April 1929	5.25
May 1929	61.9
June 1929	101
July 1929	107
August 1929	106
September 1929	107
October 1929	102
November 1929	80.7
December 1929	56.0
January 1930	36.6
February 1930	25.0
March 1930	24.1
April 1930	43.6
May 1930	88.2
June 1930	102
July 1930	109
August 1930	108
September 1930	109
October 1930	93.4
November 1930	66.1
December 1930	47.4
January 1931	26.8
February 1931	13.2
March 1931	5.76
April 1931	6.08
May 1931	51.9
June 1931	92.7
July 1931	78.4
August 1931	44.4
September 1931	27.7
October 1931	24.3
November 1931	19.9
December 1931	16.5
January 1932	13.2
February 1932	7.28
March 1932	8.97
April 1932	26.8
May 1932	68.9
June 1932	101
July 1932	109
August 1932	109
September 1932	108
October 1932	109
November 1932	90.6
December 1932	73.1
January 1933	44.4
February 1933	20.6
March 1933	7.10
April 1933	13.2
May 1933	30.3
June 1933	81.2
July 1933	109
August 1933	107
September 1933	108
October 1933	108
November 1933	97.2
December 1933	69.1
January 1934	48.4
February 1934	27.8
March 1934	17.7
April 1934	34.7
May 1934	55.0
June 1934	69.8
July 1934	94.0
August 1934	70.2
September 1934	46.0
October 1934	33.0
November 1934	29.4
December 1934	17.4
January 1935	5.48
February 1935	5.21
March 1935	2.77
April 1935	13.8
May 1935	59.8
June 1935	102
July 1935	109
August 1935	109
September 1935	108
October 1935	108
November 1935	89.2
December 1935	54.6
January 1936	30.8
February 1936	17.7
March 1936	8.13
April 1936	24.2
May 1936	89.3
June 1936	99.1
July 1936	109
August 1936	109
September 1936	109
October 1936	108
November 1936	88.6
December 1936	52.3
January 1937	22.8
February 1937	8.22
March 1937	6.03
April 1937	14.3
May 1937	55.2
June 1937	80.5
July 1937	83.5
August 1937	83.7
September 1937	67.4
October 1937	27.9
November 1937	12.4
December 1937	47.6
January 1938	35.0
February 1938	25.5
March 1938	25.7
April 1938	25.2
May 1938	58.0
June 1938	95.0
July 1938	104
August 1938	109
September 1938	106
October 1938	83.6
November 1938	60.2
December 1938	42.5
January 1939	74.2
February 1939	63.2
March 1939	43.1
April 1939	65.8
May 1939	104
June 1939	107
July 1939	104
August 1939	86.4
September 1939	55.3
October 1939	37.4
November 1939	14.4
December 1939	17.6
January 1940	56.2
February 1940	51.7
March 1940	48.8
April 1940	60.7
May 1940	87.0
June 1940	107
July 1940	109
August 1940	108
September 1940	107
October 1940	103
November 1940	83.7
December 1940	55.5
January 1941	44.6
February 1941	29.0
March 1941	19.8
April 1941	17.3
May 1941	66.1
June 1941	90.8
July 1941	108
August 1941	109
September 1941	108
October 1941	107
November 1941	107
December 1941	100
January 1942	86.3
February 1942	71.7
March 1942	42.1
April 1942	32.0
May 1942	43.2
June 1942	89.6
July 1942	109
August 1942	109
September 1942	108
October 1942	108
November 1942	98.0
December 1942	78.2
January 1943	63.2
February 1943	49.7
March 1943	34.2
April 1943	31.0
May 1943	61.5
June 1943	93.2
July 1943	106
August 1943	108
September 1943	108
October 1943	107
November 1943	97.2
December 1943	72.6
January 1944	54.8
February 1944	40.7
March 1944	31.5
April 1944	33.7
May 1944	76.0
June 1944	102
July 1944	108
August 1944	106
September 1944	108
October 1944	108
November 1944	100
December 1944	78.3
January 1945	54.5
February 1945	37.4
March 1945	24.2
April 1945	21.9
May 1945	66.0
June 1945	90.8
July 1945	109
August 1945	108
September 1945	99.8
October 1945	61.5
November 1945	25.7
December 1945	29.1
January 1946	67.2
February 1946	46.0
March 1946	31.6
April 1946	33.2
May 1946	69.0
June 1946	103
July 1946	109
August 1946	108
September 1946	108
October 1946	105
November 1946	106
December 1946	101
January 1947	82.8
February 1947	63.5
March 1947	46.0
April 1947	54.1
May 1947	86.2
June 1947	104
July 1947	108
August 1947	108
September 1947	108
October 1947	96.7
November 1947	78.3
December 1947	59.8
January 1948	48.5
February 1948	35.9
March 1948	24.6
April 1948	30.5
May 1948	62.8
June 1948	84.6
July 1948	108
August 1948	108
September 1948	108
October 1948	108
November 1948	97.8
December 1948	79.8
January 1949	63.5
February 1949	46.9
March 1949	29.2
April 1949	20.0
May 1949	52.0
June 1949	98.3
July 1949	108
August 1949	108
September 1949	89.6
October 1949	60.4
November 1949	84.0
December 1949	72.4
January 1950	53.7
February 1950	46.0
March 1950	34.1
April 1950	36.0
May 1950	53.8
June 1950	96.9
July 1950	109
August 1950	109
September 1950	108
October 1950	98.5
November 1950	92.0
December 1950	104
January 1951	104
February 1951	84.5
March 1951	78.3
April 1951	72.9
May 1951	76.2
June 1951	103
July 1951	110
August 1951	109
September 1951	109
October 1951	106
November 1951	94.9
December 1951	81.2
January 1952	64.6
February 1952	45.9
March 1952	24.2
April 1952	20.5
May 1952	53.5
June 1952	81.0
July 1952	107
August 1952	110
September 1952	110
October 1952	108
November 1952	107
December 1952	89.0
January 1953	65.9
February 1953	48.7
March 1953	40.3
April 1953	51.3
May 1953	90.2
June 1953	101
July 1953	109
August 1953	108
September 1953	108
October 1953	107
November 1953	101
December 1953	84.6
January 1954	61.5
February 1954	47.6
March 1954	40.9
April 1954	40.7
May 1954	71.7
June 1954	99.4
July 1954	109
August 1954	109
September 1954	109
October 1954	108
November 1954	103
December 1954	83.9
January 1955	62.5
February 1955	46.4
March 1955	36.5
April 1955	33.1
May 1955	57.7
June 1955	96.3
July 1955	85.5
August 1955	44.8
September 1955	8.94
October 1955	12.4
November 1955	34.5
December 1955	56.7
January 1956	73.1
February 1956	55.2
March 1956	43.2
April 1956	32.9
May 1956	42.9
June 1956	88.7
July 1956	108
August 1956	109
September 1956	98.5
October 1956	62.7
November 1956	81.5
December 1956	66.0
January 1957	54.4
February 1957	46.1
March 1957	41.5
April 1957	39.2
May 1957	59.0
June 1957	90.6
July 1957	108
August 1957	108
September 1957	107
October 1957	107
November 1957	84.5
December 1957	52.5
January 1958	58.4
February 1958	42.6
March 1958	35.1
April 1958	30.2
May 1958	55.7
June 1958	88.9
July 1958	109
August 1958	109
September 1958	107
October 1958	107
November 1958	89.7
December 1958	67.7
January 1959	54.2
February 1959	44.5
March 1959	38.5
April 1959	45.0
May 1959	76.3
June 1959	77.0
July 1959	71.6
August 1959	65.1
September 1959	82.2
October 1959	76.2
November 1959	58.4
December 1959	50.7
January 1960	42.6
February 1960	31.6
March 1960	30.6
April 1960	52.2
May 1960	83.5
June 1960	95.3
July 1960	95.4
August 1960	95.0
September 1960	77.7
October 1960	59.9
November 1960	57.3
December 1960	56.6
January 1961	48.4
February 1961	43.0
March 1961	38.4
April 1961	47.5
May 1961	65.3
June 1961	80.3
July 1961	92.1
August 1961	102
September 1961	83.1
October 1961	62.9
November 1961	62.2
December 1961	58.4
January 1962	54.1
February 1962	52.5
March 1962	39.2
April 1962	33.5
May 1962	46.3
June 1962	73.2
July 1962	107
August 1962	108
September 1962	108
October 1962	100
November 1962	82.0
December 1962	70.7
January 1963	65.9
February 1963	74.9
March 1963	70.9
April 1963	59.0
May 1963	39.3
June 1963	82.7
July 1963	110
August 1963	109
September 1963	108
October 1963	108
November 1963	108
December 1963	102
January 1964	84.7
February 1964	66.9
March 1964	45.5
April 1964	36.2
May 1964	53.2
June 1964	85.5
July 1964	92.8
August 1964	90.7
September 1964	80.0
October 1964	35.7
November 1964	12.5
December 1964	9.72
January 1965	42.2
February 1965	50.0
March 1965	25.1
April 1965	15.4
May 1965	39.2
June 1965	79.7
July 1965	108
August 1965	108
September 1965	108
October 1965	108
November 1965	100.0
December 1965	96.5
January 1966	88.7
February 1966	65.2
March 1966	53.7
April 1966	68.0
May 1966	87.6
June 1966	108
July 1966	108
August 1966	108
September 1966	108
October 1966	103
November 1966	85.6
December 1966	88.3
January 1967	77.6
February 1967	65.2
March 1967	53.4
April 1967	27.4
May 1967	22.0
June 1967	64.7
July 1967	100
August 1967	109
September 1967	106
October 1967	107
November 1967	106
December 1967	104
January 1968	89.6
February 1968	65.2
March 1968	62.6
April 1968	69.8
May 1968	90.9
June 1968	103
July 1968	106
August 1968	92.1
September 1968	85.1
October 1968	73.6
November 1968	69.7
December 1968	71.6
January 1969	78.4
February 1969	60.4
March 1969	22.7
April 1969	23.5
May 1969	43.7
June 1969	71.1
July 1969	106
August 1969	109
September 1969	104
October 1969	92.5
November 1969	84.4
December 1969	67.6
January 1970	68.5
February 1970	79.9
March 1970	76.0
April 1970	70.9
May 1970	76.6
June 1970	93.0
July 1970	108
August 1970	107
September 1970	103
October 1970	107
November 1970	93.5
December 1970	84.1
January 1971	73.9
February 1971	65.4
March 1971	46.2
April 1971	44.1
May 1971	64.3
June 1971	102
July 1971	107
August 1971	107
September 1971	90.7
October 1971	49.7
November 1971	18.5
December 1971	27.7
January 1972	45.9
February 1972	49.9
March 1972	57.9
April 1972	59.3
May 1972	82.6
June 1972	103
July 1972	107
August 1972	107
September 1972	106
October 1972	105
November 1972	103
December 1972	96.1
January 1973	93.0
February 1973	85.8
March 1973	53.6
April 1973	29.4
May 1973	56.7
June 1973	108
July 1973	109
August 1973	106
September 1973	108
October 1973	107
November 1973	104
December 1973	104
January 1974	102
February 1974	83.0
March 1974	53.6
April 1974	37.6
May 1974	59.2
June 1974	101
July 1974	109
August 1974	109
September 1974	109
October 1974	109
November 1974	107
December 1974	100
January 1975	98.3
February 1975	87.8
March 1975	74.6
April 1975	60.2
May 1975	51.6
June 1975	103
July 1975	108
August 1975	108
September 1975	109
October 1975	108
November 1975	108
December 1975	101
January 1976	87.8
February 1976	86.5
March 1976	70.2
April 1976	52.9
May 1976	75.2
June 1976	97.7
July 1976	108
August 1976	108
September 1976	107
October 1976	98.1
November 1976	83.6
December 1976	69.0
January 1977	59.6
February 1977	52.2
March 1977	55.5
April 1977	63.3
May 1977	92.4
June 1977	107
July 1977	107
August 1977	108
September 1977	103
October 1977	93.5
November 1977	84.6
December 1977	77.2
January 1978	66.0
February 1978	46.1
March 1978	19.1
April 1978	15.7
May 1978	48.7
June 1978	90.1
July 1978	107
August 1978	110
September 1978	109
October 1978	109
November 1978	108
December 1978	104
January 1979	104
February 1979	104
March 1979	87.7
April 1979	57.8
May 1979	62.6
June 1979	109
July 1979	109
August 1979	109
September 1979	109
October 1979	106
November 1979	101
December 1979	102
January 1980	102
February 1980	99.2
March 1980	66.7
April 1980	60.7
May 1980	70.3
June 1980	77.3
July 1980	110
August 1980	110
September 1980	109
October 1980	109
November 1980	107
December 1980	106
January 1981	102
February 1981	89.7
March 1981	69.3
April 1981	69.5
May 1981	96.4
June 1981	108
July 1981	109
August 1981	109
September 1981	109
October 1981	105
November 1981	104
December 1981	95.3
January 1982	94.2
February 1982	98.1
March 1982	86.9
April 1982	39.1
May 1982	65.1
June 1982	96.4
July 1982	110
August 1982	110
September 1982	108
October 1982	108
November 1982	109
December 1982	108
January 1983	108
February 1983	103
March 1983	71.2
April 1983	40.2
May 1983	28.3
June 1983	58.7
July 1983	99.6
August 1983	110
September 1983	109
October 1983	107
November 1983	106
December 1983	106
January 1984	98.8
February 1984	81.3
March 1984	63.4
April 1984	56.1
May 1984	87.3
June 1984	107
July 1984	109
August 1984	109
September 1984	108
October 1984	96.0
November 1984	98.8
December 1984	108
January 1985	108
February 1985	94.1
March 1985	83.4
April 1985	96.0
May 1985	104
June 1985	107
July 1985	107
August 1985	107
September 1985	107
October 1985	106
November 1985	99.8
December 1985	85.2
January 1986	64.6
February 1986	70.2
March 1986	57.8
April 1986	46.6
May 1986	79.9
June 1986	107
July 1986	110
August 1986	109
September 1986	108
October 1986	107
November 1986	107
December 1986	107
January 1987	104
February 1987	82.4
March 1987	56.1
April 1987	57.7
May 1987	91.2
June 1987	106
July 1987	106
August 1987	106
September 1987	105
October 1987	100
November 1987	90.4
December 1987	77.5
January 1988	66.0
February 1988	54.2
March 1988	45.6
April 1988	56.4
May 1988	73.4
June 1988	91.4
July 1988	104
August 1988	108
September 1988	105
October 1988	96.1
November 1988	83.2
December 1988	70.7
January 1989	59.5
February 1989	50.3
March 1989	48.9
April 1989	66.9
May 1989	91.3
June 1989	101
July 1989	106
August 1989	106
September 1989	104
October 1989	89.0
November 1989	75.9
December 1989	66.6
January 1990	62.7
February 1990	58.0
March 1990	46.3
April 1990	55.6
May 1990	87.1
June 1990	104
July 1990	107
August 1990	107
September 1990	101
October 1990	86.8
November 1990	80.3
December 1990	73.2
January 1991	66.1
February 1991	25.7
March 1991	4.52
April 1991	5.48
May 1991	28.7
June 1991	104
July 1991	107
August 1991	107
September 1991	105
October 1991	95.8
November 1991	89.0
December 1991	78.5
January 1992	66.2
February 1992	63.5
March 1992	56.9
April 1992	58.9
May 1992	85.9
June 1992	101
July 1992	107
August 1992	107
September 1992	104
October 1992	92.7
November 1992	80.9
December 1992	62.3
January 1993	52.5
February 1993	38.1
March 1993	32.5
April 1993	40.6
May 1993	64.9
June 1993	105
July 1993	109
August 1993	109
September 1993	107
October 1993	102
November 1993	91.1
December 1993	87.0
January 1994	65.3
February 1994	48.5
March 1994	45.9
April 1994	55.9
May 1994	83.7
June 1994	107
July 1994	108
August 1994	107
September 1994	101
October 1994	85.1
November 1994	70.4
December 1994	65.0
January 1995	57.0
February 1995	46.6
March 1995	44.6
April 1995	52.8
May 1995	42.7
June 1995	87.2
July 1995	108
August 1995	109
September 1995	108
October 1995	108
November 1995	86.5
December 1995	54.4
January 1996	24.5
February 1996	20.5
March 1996	54.6
April 1996	53.8
May 1996	91.1
June 1996	108
July 1996	109
August 1996	109
September 1996	107
October 1996	97.2
November 1996	86.6
December 1996	81.9
January 1997	90.1
February 1997	65.6
March 1997	48.1
April 1997	58.3
May 1997	93.5
June 1997	109
July 1997	109
August 1997	109
September 1997	106
October 1997	97.3
November 1997	95.6
December 1997	82.4
January 1998	61.0
February 1998	47.6
March 1998	37.3
April 1998	32.4
May 1998	42.2
June 1998	78.4
July 1998	107
August 1998	109
September 1998	109
October 1998	101
November 1998	93.7
December 1998	75.9
January 1999	53.7
February 1999	62.3
March 1999	52.5
April 1999	37.3
May 1999	77.1
June 1999	106
July 1999	109
August 1999	109
September 1999	108
October 1999	83.7
November 1999	53.7
December 1999	45.9
January 2000	42.1
February 2000	46.3
March 2000	49.6
April 2000	59.4
May 2000	94.5
June 2000	109
July 2000	108
August 2000	108
September 2000	108
October 2000	89.3
November 2000	57.6
December 2000	45.4
January 2001	46.7
February 2001	46.4
March 2001	47.5
April 2001	69.0
May 2001	103
June 2001	108
July 2001	109
August 2001	108
September 2001	105
October 2001	95.7
November 2001	79.9
December 2001	64.5
January 2002	52.5
February 2002	44.0
March 2002	47.5
April 2002	78.1
May 2002	105
June 2002	108
July 2002	108
August 2002	109
September 2002	97.1
October 2002	82.2
November 2002	69.6
December 2002	57.7
January 2003	55.3
February 2003	50.4
March 2003	43.8
April 2003	61.0
May 2003	80.7
June 2003	108
July 2003	108
August 2003	108
September 2003	106
October 2003	96.9
November 2003	63.9
December 2003	43.3
January 2004	37.9
February 2004	34.1
March 2004	42.9
April 2004	76.5
May 2004	98.1
June 2004	108
July 2004	108
August 2004	108
September 2004	105
October 2004	103
November 2004	80.5
December 2004	45.0
January 2005	36.2
February 2005	47.3
March 2005	58.3
April 2005	54.8
May 2005	69.6
June 2005	104
July 2005	108
August 2005	108
September 2005	104
October 2005	95.8
November 2005	80.4
December 2005	53.1
January 2006	50.0
February 2006	48.9
March 2006	48.8
April 2006	36.6
May 2006	71.8
June 2006	101
July 2006	107
August 2006	108
September 2006	108
October 2006	93.7
November 2006	77.3
December 2006	57.4
January 2007	62.4
February 2007	60.2
March 2007	57.9
April 2007	74.8
May 2007	103
June 2007	108
July 2007	108
August 2007	108
September 2007	86.1
October 2007	67.7
November 2007	69.8
December 2007	64.7
January 2008	52.7
February 2008	45.5
March 2008	36.1
April 2008	44.1
May 2008	82.1
June 2008	108
July 2008	108
August 2008	108
September 2008	105
October 2008	95.7
November 2008	102
December 2008	91.9
January 2009	81.9
February 2009	67.7
March 2009	54.4
April 2009	57.5
May 2009	97.5
June 2009	108
July 2009	108
August 2009	108
September 2009	98.5
October 2009	63.7
November 2009	61.9
December 2009	61.3
January 2010	55.0
February 2010	44.3
March 2010	42.8
April 2010	53.6
May 2010	63.7
June 2010	98.7
July 2010	108
August 2010	108
September 2010	108
October 2010	105
November 2010	95.0
December 2010	85.7
January 2011	73.6
February 2011	78.0
March 2011	64.7
April 2011	42.4
May 2011	63.2
June 2011	97.3
July 2011	108
August 2011	108
September 2011	108
October 2011	106
November 2011	90.7
December 2011	75.5
January 2012	61.5
February 2012	93.7
March 2012	84.6
April 2012	84.9
May 2012	106
June 2012	106
July 2012	106
August 2012	107
September 2012	89.5
October 2012	49.3
November 2012	42.1
December 2012	39.3
January 2013	42.8
February 2013	37.2
March 2013	43.7
April 2013	57.1
May 2013	98.3
June 2013	108
July 2013	108
August 2013	108
September 2013	82.7
October 2013	42.3
November 2013	36.1
December 2013	31.4
January 2014	31.4
February 2014	33.1
March 2014	37.3
April 2014	48.2
May 2014	60.8
June 2014	54.9
July 2014	46.9
August 2014	41.6
September 2014	44.4
October 2014	42.0
November 2014	36.0
December 2014	33.5
January 2015	32.8
February 2015	35.0
March 2015	38.6
April 2015	44.2
May 2015	50.6
June 2015	74.7
July 2015	64.1
August 2015	51.1
September 2015	39.6
October 2015	32.1
November 2015	45.0
December 2015	51.7
January 2016	46.9
February 2016	46.1
March 2016	47.6
April 2016	66.9
May 2016	103
June 2016	108
July 2016	108
August 2016	107
September 2016	92.5
October 2016	45.4
November 2016	34.5
December 2016	42.3
January 2017	61.0
February 2017	52.1
March 2017	36.7
April 2017	42.6
May 2017	83.6
June 2017	107
July 2017	108
August 2017	108
September 2017	108
October 2017	105
November 2017	86.9
December 2017	74.5
January 2018	62.3
February 2018	44.4
March 2018	55.3
April 2018	75.0
May 2018	102
June 2018	108
July 2018	108
August 2018	108
September 2018	96.6
October 2018	77.6
November 2018	61.8
December 2018	52.4
January 2019	45.3
February 2019	41.3
March 2019	36.9
April 2019	54.9
May 2019	88.2
June 2019	108
July 2019	108
August 2019	108
September 2019	80.7
October 2019	53.8
November 2019	42.8
December 2019	60.1
January 2020	52.7
February 2020	47.7
March 2020	45.8
April 2020	48.0
May 2020	89.5
June 2020	107
July 2020	108
August 2020	107
September 2020	108
October 2020	107
November 2020	85.0
December 2020	67.8
January 2021	56.0
February 2021	49.2
March 2021	45.4
April 2021	54.2
May 2021	80.5
June 2021	106
July 2021	108
August 2021	107
September 2021	79.9
October 2021	53.7
November 2021	46.8
December 2021	50.5
January 2022	50.0
February 2022	52.0
March 2022	53.5
April 2022	68.1
May 2022	98.0
June 2022	108
July 2022	108
August 2022	92.3
September 2022	68.0
October 2022	47.3
November 2022	38.7
December 2022	35.6
January 2023	35.4
February 2023	34.4
March 2023	37.6
April 2023	32.8
May 2023	70.2
June 2023	107
July 2023	108
August 2023	108
September 2023	107
October 2023	90.7
November 2023	70.4
December 2023	53.8
January 2024	45.4
February 2024	42.7
March 2024	47.6
April 2024	57.4
May 2024	96.5
June 2024	108
July 2024	108
August 2024	108
September 2024	93.3
October 2024	75.8
November 2024	68.5
December 2024	64.6
January 2025	52.5
February 2025	49.0
March 2025	39.1
April 2025	50.3
May 2025	97.1
June 2025	107
July 2025	108
August 2025	108
September 2025	85.3

The reservoir's year

Seasonal storage profile

Each calendar month's reference average, against the most recent year

1991–2020 average
Most recent 12 months

Twelve separate averages, one per calendar month. A January average describes Januaries only. Months are plotted 1–12.

View the data behind this chart

Underlying data
Period	1991–2020 average (Mm³)	Most recent 12 months (Mm³)
Jan	54.0	52.5
Feb	48.7	49.0
Mar	46.6	39.1
Apr	54.2	50.3
May	80.8	97.1
Jun	102	107
Jul	104	108
Aug	104	108
Sep	97.9	85.3
Oct	83.7	75.8
Nov	71.6	68.5
Dec	61.1	64.6

Rate and persistence

-0.66 Mm³

Mean drawdown per month over 12 months

1 of 24

Months in the last two years below the 20th percentile for their own month

Rates are computed only across an unbroken run of months, so a rate is never divided by a period in which some of the change was not observed. Percentile counts compare each month with the same calendar month in every other year held.

Location

Huntington Lk Nr Big Creek CA

Gauge location

Where this comes from

1,188 monthly observations 1926–2025 Mm³

Spatially aggregatedHigh confidenceSeptember 2025

Source: USGS — National Water Information System, 11236000. Licence: Open.

Method: Monthly mean of daily reservoir storage published by the USGS in acre-feet and converted to millions of cubic metres. Months with fewer than 20 days of record are not published rather than averaged from a partial month.

Reservoir storage is managed as well as observed: a drawdown may reflect an operating rule, flood-control rule curve or scheduled release rather than a shortage. Compare a month against the same month in other years, and do not read a fall as a supply signal without knowing the operating regime.

Retrieved 25 August 2026.

Monthly mean of daily reservoir storage published by the USGS in acre-feet and converted to millions of cubic metres. Months with fewer than 20 days of record are not published rather than averaged from a partial month.