Hugh Butler Lake, Nebr. — storage

Storage now, against this reservoir's own record

38.18 Mm³

Stored, September 1994

86th

Percentile among 29 Seps on record

-9.7%

Change over the 12 months to 1994-09

Storage in September 1994 was higher than most Seps on record, ranked against 29 other Seps held for this reservoir.

Storage, 1965–1994

Monthly mean storage

348 monthly values, 1965 to 1994

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	Hugh Butler Lake Near Mc Cook, Nebr. (Mm³)
October 1965	36.9
November 1965	38.2
December 1965	39.4
January 1966	40.7
February 1966	42.1
March 1966	44.0
April 1966	45.5
May 1966	45.4
June 1966	44.0
July 1966	41.6
August 1966	41.1
September 1966	40.3
October 1966	40.1
November 1966	40.9
December 1966	41.9
January 1967	43.2
February 1967	44.7
March 1967	45.6
April 1967	46.1
May 1967	46.5
June 1967	47.6
July 1967	49.5
August 1967	46.1
September 1967	44.1
October 1967	45.4
November 1967	45.8
December 1967	46.7
January 1968	47.4
February 1968	47.5
March 1968	47.6
April 1968	47.8
May 1968	47.4
June 1968	46.8
July 1968	42.8
August 1968	38.7
September 1968	37.3
October 1968	37.0
November 1968	37.9
December 1968	39.0
January 1969	40.4
February 1969	42.1
March 1969	44.7
April 1969	46.5
May 1969	47.2
June 1969	47.0
July 1969	47.3
August 1969	44.0
September 1969	41.3
October 1969	41.5
November 1969	43.4
December 1969	44.8
January 1970	45.9
February 1970	46.7
March 1970	46.8
April 1970	46.9
May 1970	46.3
June 1970	46.4
July 1970	42.3
August 1970	37.8
September 1970	35.8
October 1970	36.0
November 1970	37.3
December 1970	38.6
January 1971	39.8
February 1971	41.5
March 1971	43.7
April 1971	45.5
May 1971	47.2
June 1971	46.7
July 1971	42.2
August 1971	36.5
September 1971	33.9
October 1971	34.8
November 1971	36.4
December 1971	38.1
January 1972	39.5
February 1972	40.6
March 1972	42.1
April 1972	43.1
May 1972	44.9
June 1972	46.5
July 1972	45.1
August 1972	39.3
September 1972	35.8
October 1972	35.5
November 1972	37.3
December 1972	39.0
January 1973	40.8
February 1973	43.0
March 1973	45.1
April 1973	47.0
May 1973	47.3
June 1973	46.7
July 1973	40.5
August 1973	37.5
September 1973	34.3
October 1973	37.0
November 1973	38.5
December 1973	40.3
January 1974	42.2
February 1974	44.4
March 1974	45.9
April 1974	47.3
May 1974	47.8
June 1974	47.9
July 1974	41.5
August 1974	35.6
September 1974	33.1
October 1974	33.5
November 1974	34.8
December 1974	36.0
January 1975	37.4
February 1975	38.9
March 1975	40.8
April 1975	42.8
May 1975	43.8
June 1975	45.9
July 1975	43.5
August 1975	38.7
September 1975	34.2
October 1975	34.3
November 1975	35.3
December 1975	37.1
January 1976	38.9
February 1976	40.8
March 1976	42.3
April 1976	43.6
May 1976	44.7
June 1976	44.1
July 1976	39.3
August 1976	33.6
September 1976	28.7
October 1976	29.8
November 1976	30.8
December 1976	32.0
January 1977	33.1
February 1977	34.3
March 1977	36.7
April 1977	40.4
May 1977	42.8
June 1977	43.5
July 1977	37.6
August 1977	33.0
September 1977	32.9
October 1977	33.0
November 1977	33.8
December 1977	35.0
January 1978	36.1
February 1978	37.3
March 1978	41.7
April 1978	44.4
May 1978	45.5
June 1978	45.3
July 1978	37.3
August 1978	28.2
September 1978	21.2
October 1978	21.5
November 1978	22.7
December 1978	24.3
January 1979	25.5
February 1979	27.3
March 1979	30.2
April 1979	32.8
May 1979	34.6
June 1979	34.0
July 1979	34.1
August 1979	31.2
September 1979	28.3
October 1979	28.1
November 1979	29.1
December 1979	30.4
January 1980	31.7
February 1980	33.5
March 1980	36.1
April 1980	38.5
May 1980	39.2
June 1980	39.7
July 1980	35.5
August 1980	27.9
September 1980	24.6
October 1980	24.8
November 1980	25.6
December 1980	26.6
January 1981	27.7
February 1981	28.8
March 1981	30.7
April 1981	32.5
May 1981	34.7
June 1981	35.5
July 1981	33.2
August 1981	33.5
September 1981	31.8
October 1981	31.5
November 1981	32.3
December 1981	33.5
January 1982	34.4
February 1982	35.4
March 1982	36.7
April 1982	37.6
May 1982	39.1
June 1982	41.5
July 1982	39.8
August 1982	35.2
September 1982	32.9
October 1982	33.2
November 1982	34.0
December 1982	34.9
January 1983	36.2
February 1983	37.9
March 1983	40.6
April 1983	42.5
May 1983	44.9
June 1983	45.7
July 1983	42.9
August 1983	38.1
September 1983	32.7
October 1983	32.2
November 1983	33.0
December 1983	34.1
January 1984	35.2
February 1984	37.0
March 1984	38.8
April 1984	41.0
May 1984	44.0
June 1984	45.2
July 1984	43.5
August 1984	37.9
September 1984	34.4
October 1984	34.7
November 1984	35.7
December 1984	36.8
January 1985	37.9
February 1985	39.4
March 1985	41.6
April 1985	42.4
May 1985	43.9
June 1985	43.4
July 1985	39.8
August 1985	35.5
September 1985	31.9
October 1985	32.7
November 1985	33.7
December 1985	34.7
January 1986	35.9
February 1986	37.3
March 1986	38.7
April 1986	39.6
May 1986	40.1
June 1986	41.0
July 1986	36.3
August 1986	31.5
September 1986	29.5
October 1986	30.4
November 1986	31.6
December 1986	32.5
January 1987	33.5
February 1987	34.6
March 1987	36.4
April 1987	38.4
May 1987	39.3
June 1987	39.6
July 1987	36.1
August 1987	30.4
September 1987	29.0
October 1987	29.2
November 1987	30.2
December 1987	31.6
January 1988	32.6
February 1988	34.3
March 1988	36.8
April 1988	37.8
May 1988	39.0
June 1988	38.3
July 1988	34.3
August 1988	32.3
September 1988	31.7
October 1988	32.1
November 1988	32.6
December 1988	33.5
January 1989	34.5
February 1989	35.4
March 1989	36.8
April 1989	37.8
May 1989	38.3
June 1989	38.1
July 1989	35.7
August 1989	31.1
September 1989	30.7
October 1989	30.9
November 1989	31.4
December 1989	32.2
January 1990	33.3
February 1990	34.5
March 1990	36.0
April 1990	37.0
May 1990	38.0
June 1990	38.2
July 1990	32.3
August 1990	27.5
September 1990	24.7
October 1990	24.9
November 1990	25.8
December 1990	26.8
January 1991	27.6
February 1991	28.6
March 1991	29.8
April 1991	31.1
May 1991	33.2
June 1991	34.8
July 1991	30.9
August 1991	25.8
September 1991	23.6
October 1991	23.6
November 1991	24.6
December 1991	25.8
January 1992	27.3
February 1992	28.7
March 1992	30.4
April 1992	31.3
May 1992	31.5
June 1992	32.0
July 1992	31.2
August 1992	30.5
September 1992	30.2
October 1992	30.1
November 1992	30.8
December 1992	31.6
January 1993	32.5
February 1993	34.2
March 1993	37.8
April 1993	39.6
May 1993	40.6
June 1993	41.3
July 1993	41.2
August 1993	43.2
September 1993	42.3
October 1993	43.7
November 1993	44.6
December 1993	45.4
January 1994	46.3
February 1994	47.4
March 1994	48.0
April 1994	48.4
May 1994	48.2
June 1994	46.6
July 1994	42.9
August 1994	39.8
September 1994	38.2

Rate and persistence

-0.34 Mm³

Mean drawdown per month over 12 months

2 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

Hugh Butler Lake Near Mc Cook, Nebr.

Gauge location

Where this comes from

348 monthly observations 1965–1994 Mm³

Spatially aggregatedHigh confidenceSeptember 1994

Source: USGS — National Water Information System, 06837390. 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.