Benbrook Lk, TX — storage

Storage now, against this reservoir's own record

101.50 Mm³

Stored, June 2001

27th

Percentile among 49 Juns on record

-12.8%

Change over the 12 months to 2001-06

Storage in June 2001 was lower than most Juns on record, ranked against 49 other Juns held for this reservoir.

No percentage departure from the Jun average is published here. No long-term average is held for this month, so there is nothing to compare with.

Storage, 1952–2001

Monthly mean storage

585 monthly values, 1952 to 2001

Monthly means of the publisher's daily record. Volume, not percentage of capacity — see below for why.

What the shaded periods are (0 events)

Not shown on this chart

The 1976 drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
The 2022 drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
Yorkshire drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
Cantareira water crisis, São Paulo — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
Cape Town Day Zero — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.
European drought — This event’s area does not contain this chart’s subject. Sharing a country is not sharing an event, so it is not drawn.

View the data behind this chart

240 of 585 periods, evenly spaced across the record. Every value is in the download and the API; a table of all 585 would be longer than this page and unusable with a screen reader.
Period	Benbrook Lk Nr Benbrook, TX (Mm³)
October 1952	0.048
December 1952	1.10
March 1953	1.62
May 1953	7.55
August 1953	8.97
October 1953	8.23
January 1954	10.1
March 1954	9.94
June 1954	11.4
August 1954	9.04
October 1954	7.35
January 1955	6.58
March 1955	6.49
June 1955	16.8
August 1955	19.2
November 1955	18.9
January 1956	18.0
April 1956	17.6
June 1956	24.1
August 1956	20.3
November 1956	18.4
January 1957	18.3
April 1957	31.1
June 1957	201
September 1957	100
November 1957	106
February 1958	108
April 1958	109
June 1958	106
September 1958	103
November 1958	102
February 1959	100.0
April 1959	99.8
July 1959	101
September 1959	94.9
December 1959	108
February 1960	107
April 1960	104
July 1960	105
September 1960	101
December 1960	95.0
February 1961	96.2
May 1961	101
July 1961	103
October 1961	93.4
December 1961	93.3
February 1962	92.4
May 1962	90.4
July 1962	92.1
October 1962	108
December 1962	109
March 1963	109
May 1963	109
August 1963	99.9
October 1963	93.2
December 1963	89.4
March 1964	91.6
May 1964	93.3
August 1964	83.9
October 1964	85.4
January 1965	100
March 1965	109
May 1965	118
August 1965	102
October 1965	99.1
January 1966	98.3
March 1966	101
June 1966	115
August 1966	108
November 1966	108
January 1967	107
March 1967	107
June 1967	106
August 1967	102
November 1967	98.3
January 1968	103
April 1968	112
June 1968	111
September 1968	109
November 1968	107
January 1969	107
April 1969	118
June 1969	112
September 1969	107
November 1969	112
February 1970	112
April 1970	120
July 1970	107
September 1970	102
November 1970	100
February 1971	97.7
April 1971	93.6
July 1971	87.2
September 1971	86.8
December 1971	126
February 1972	110
May 1972	109
July 1972	104
September 1972	98.8
December 1972	100
February 1973	109
May 1973	113
July 1973	110
October 1973	111
December 1973	109
March 1974	110
May 1974	112
July 1974	104
October 1974	111
December 1974	110
March 1975	110
May 1975	111
August 1975	108
October 1975	104
January 1976	102
March 1976	102
May 1976	113
August 1976	107
October 1976	106
January 1977	111
March 1977	116
June 1977	108
August 1977	101
November 1977	94.2
January 1978	92.1
March 1978	94.5
June 1978	98.3
August 1978	90.7
November 1978	84.6
January 1979	84.1
April 1979	109
June 1979	112
September 1979	107
November 1979	104
January 1980	107
April 1980	111
June 1980	110
September 1980	93.9
November 1980	89.2
February 1981	88.5
April 1981	93.0
July 1981	94.2
September 1981	89.4
November 1981	133
February 1982	112
April 1982	110
July 1982	113
September 1982	106
December 1982	98.9
February 1983	100
May 1983	101
July 1983	103
September 1983	98.1
December 1983	89.7
February 1984	88.2
May 1984	89.4
July 1984	84.1
October 1984	76.9
December 1984	80.5
March 1985	97.2
May 1985	119
July 1985	107
October 1985	96.4
December 1985	95.3
March 1986	97.8
May 1986	102
August 1986	108
October 1986	106
January 1987	110
March 1987	116
May 1987	110
August 1987	105
October 1987	98.5
January 1988	94.1
March 1988	93.6
June 1988	90.7
August 1988	82.5
November 1988	75.1
January 1989	74.5
March 1989	88.8
June 1989	219
August 1989	110
November 1989	102
January 1990	101
April 1990	138
June 1990	120
August 1990	105
November 1990	97.7
January 1991	99.8
April 1991	109
June 1991	111
September 1991	109
November 1991	141
February 1992	116
April 1992	110
June 1992	110
September 1992	105
November 1992	101
February 1993	112
April 1993	110
July 1993	107
September 1993	96.8
December 1993	110
February 1994	110
April 1994	110
July 1994	106
September 1994	102
December 1994	111
February 1995	110
May 1995	127
July 1995	109
October 1995	109
December 1995	106
February 1996	109
May 1996	108
July 1996	104
October 1996	107
December 1996	113
March 1997	146
May 1997	112
August 1997	109
October 1997	103
December 1997	108
March 1998	137
May 1998	110
August 1998	95.0
October 1998	85.4
January 1999	99.6
March 1999	106
June 1999	109
August 1999	87.9
October 1999	69.9
January 2000	82.7
March 2000	87.7
June 2000	116
August 2000	82.9
November 2000	61.8
January 2001	81.0
April 2001	110
June 2001	101

Why this page shows a volume and not a percentage

Percentage full is a division, and the denominator is missing

“Percentage full” is the figure a drought is discussed in, and it is stored volume divided by capacity. Capacity is published on several different bases — gross, usable, live, and the figure at a particular spillway or licence condition — and dividing a stored volume by the wrong one produces a percentage confidently wrong by the ratio between them, at exactly the moment the number matters most.

Hydrionis holds storage measurements for this reservoir and does not hold a compatible authoritative capacity figure for it, so percentage full is not calculated. The volume above is what was actually measured. Where you need a percentage, take the publisher’s own capacity on its own stated basis and divide it yourself — the source is linked below, and knowing which basis you used is the whole point.

Rate and persistence

-1.24 Mm³

Mean drawdown per month over 12 months

14 of 24

Recent months 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

Benbrook Lk Nr Benbrook, TX

Gauge location

About this data

Everything below is a property of the data rather than a rating of it. There is deliberately no single confidence score: how much a gap matters depends on what you are about to do with the series, and only you know that.

Source	United States Geological Survey — National Water Information System · US Government work — public domain
How the values came to exist	Measured
Period held	1952–2001
Completeness	97.5% of the periods in that span are held. Gaps are drawn as breaks and never interpolated.
Known gaps	Storage is a managed quantity. A falling line can be a rule curve, a scheduled release or a transfer to another system rather than a shortage of water, and nothing here distinguishes them. No capacity figure on a stated basis is held for this reservoir, so no percentage of capacity is computed.
Continuity	98% of the months between 1952 and 2001 are held. Monthly means of the publisher's own daily record.
Last read from the publisher	2026-10-01
Redistribution	Permitted by the upstream licences
Commercial reuse	Permitted by the upstream licences. No Hydrionis access tier can widen this.
Methodology	How this was produced

Use this data

Machine-readable JSON /api/v1/observations/by-subject/reservoir-usgs-08046500.json
How to cite this, and who you must credit
How these figures were produced
Request this at a different scale, format or geography

No bulk download is offered here, which is a licence position rather than a product one: at least one contributing publisher does not permit redistribution. The values can be read on the page, cited, and pointed to at source.

Attribution and citation

Suggested citation for Hydrionis

Hydrionis (2026), Benbrook Lk Nr Benbrook, TX reservoir records, accessed 2026-10-05, hydrionis.com/reservoirs/reservoir-usgs-08046500/

Cite Hydrionis where you rely on the compilation, the normalisation, the eligibility judgements or a chart. Where you use an unmodified published value, the publisher’s attribution is the one that is required; crediting Hydrionis as well is welcome and is not something Hydrionis can require of you.

Recommended, not required. Hydrionis does not claim rights over unmodified public data it relayed, and doing arithmetic on somebody else’s measurements does not make them Hydrionis’s. Cite the version and the access date: the Benbrook Lk Nr Benbrook, TX record changes as publishers release and as methods are revised, and a citation without both cannot be checked later. Full guidance is on cite and reuse.

None of the contributing licences requires attribution. Crediting the publishers is still good practice and they are listed above.

Where this comes from

585 monthly observations 1952–2001 Mm³

Spatially aggregatedHigh confidenceJune 2001

Source: USGS — National Water Information System, 08046500. 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 1 October 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.