Lk Kickapoo, TX — storage

Storage now, against this reservoir's own record

67.07 Mm³

Stored, September 1998

12th

Percentile among 52 Seps on record

-13.8%

Change over the 12 months to 1998-09

Storage in September 1998 was lower than most Seps on record, ranked against 52 other Seps held for this reservoir.

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

Storage, 1946–1998

Monthly mean storage

620 monthly values, 1946 to 1998

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 620 periods, evenly spaced across the record. Every value is in the download and the API; a table of all 620 would be longer than this page and unusable with a screen reader.
Period	Lk Kickapoo Nr Archer City, TX (Mm³)
February 1946	0.800
May 1946	1.77
July 1946	1.41
October 1946	31.6
December 1946	47.4
March 1947	49.3
June 1947	80.2
August 1947	75.3
November 1947	68.7
January 1948	70.7
April 1948	68.8
June 1948	68.0
September 1948	66.0
December 1948	57.5
February 1949	61.0
May 1949	62.9
July 1949	77.3
October 1949	74.7
January 1950	73.4
March 1950	69.4
June 1950	91.5
August 1950	136
November 1950	123
February 1951	115
April 1951	111
July 1951	108
September 1951	96.9
December 1951	87.1
March 1952	81.1
May 1952	76.8
August 1952	65.7
October 1952	55.7
January 1953	50.9
March 1953	50.8
June 1953	46.6
September 1953	48.4
November 1953	80.8
February 1954	77.7
April 1954	74.8
July 1954	98.5
October 1954	80.0
December 1954	75.3
March 1955	76.0
May 1955	81.2
August 1955	116
November 1955	126
January 1956	119
April 1956	110
June 1956	109
September 1956	86.2
November 1956	83.3
February 1957	80.9
May 1957	135
July 1957	126
October 1957	120
December 1957	129
March 1958	125
June 1958	127
August 1958	129
November 1958	120
January 1959	114
April 1959	104
July 1959	108
September 1959	98.5
December 1959	107
February 1960	108
May 1960	100
August 1960	90.3
October 1960	87.5
January 1961	94.0
March 1961	94.3
June 1961	99.4
August 1961	93.8
November 1961	90.5
February 1962	85.7
April 1962	81.4
July 1962	90.3
September 1962	117
December 1962	131
March 1963	119
May 1963	120
August 1963	110
October 1963	100
January 1964	94.7
April 1964	90.0
June 1964	92.1
September 1964	81.8
November 1964	92.2
February 1965	91.3
May 1965	90.6
July 1965	88.1
October 1965	77.0
December 1965	75.4
March 1966	70.5
May 1966	86.2
August 1966	79.1
November 1966	107
January 1967	101
April 1967	95.9
June 1967	95.9
September 1967	87.1
December 1967	80.5
February 1968	91.5
May 1968	110
July 1968	117
October 1968	102
January 1969	99.2
March 1969	102
June 1969	119
August 1969	109
November 1969	123
January 1970	121
April 1970	128
July 1970	123
September 1970	109
December 1970	103
February 1971	99.3
May 1971	90.4
August 1971	96.1
October 1971	128
January 1972	126
March 1972	122
June 1972	121
September 1972	109
November 1972	132
February 1973	132
April 1973	132
July 1973	124
October 1973	119
December 1973	116
March 1974	111
May 1974	110
August 1974	105
October 1974	122
January 1975	126
April 1975	123
June 1975	137
September 1975	132
November 1975	129
February 1976	116
May 1976	112
July 1976	110
October 1976	110
December 1976	122
March 1977	117
June 1977	131
August 1977	123
November 1977	111
January 1978	104
April 1978	101
June 1978	95.9
September 1978	98.5
December 1978	87.6
February 1979	85.6
May 1979	88.0
July 1979	90.5
October 1979	82.2
January 1980	76.5
March 1980	75.1
June 1980	75.4
August 1980	64.4
November 1980	85.3
February 1981	85.7
April 1981	95.0
July 1981	99.4
September 1981	91.2
December 1982	111
March 1983	112
May 1983	112
August 1983	106
October 1983	98.0
January 1984	95.2
March 1984	90.9
June 1984	78.5
September 1984	66.0
November 1984	62.4
February 1985	76.6
April 1985	111
July 1985	129
October 1985	115
December 1985	111
March 1986	105
May 1986	103
August 1986	104
November 1986	134
January 1987	133
April 1987	130
June 1987	134
September 1987	119
December 1987	108
February 1988	113
May 1988	105
July 1988	98.9
October 1988	87.8
December 1988	81.1
March 1989	82.0
June 1989	134
August 1989	127
November 1989	129
January 1990	112
April 1990	119
July 1990	113
September 1990	97.4
December 1990	89.8
February 1991	91.8
May 1991	88.7
August 1991	86.4
October 1991	86.8
January 1992	120
March 1992	134
June 1992	135
August 1992	128
November 1992	124
February 1993	133
April 1993	132
July 1993	127
September 1993	116
December 1993	118
March 1994	114
May 1994	112
August 1994	111
October 1994	105
January 1995	104
April 1995	98.7
June 1995	129
September 1995	125
November 1995	117
February 1996	108
May 1996	97.6
July 1996	87.0
October 1996	82.7
December 1996	83.2
March 1997	84.3
May 1997	86.3
August 1997	82.9
November 1997	71.3
January 1998	71.5
April 1998	85.7
June 1998	80.3
September 1998	67.1

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

-0.90 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

Lk Kickapoo Nr Archer City, 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	1946–1998
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	97% of the months between 1946 and 1998 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-07314000.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), Lk Kickapoo Nr Archer City, TX reservoir records, accessed 2026-10-05, hydrionis.com/reservoirs/reservoir-usgs-07314000/

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 Lk Kickapoo Nr Archer City, 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

620 monthly observations 1946–1998 Mm³

Spatially aggregatedHigh confidenceSeptember 1998

Source: USGS — National Water Information System, 07314000. 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.