Pineview Reservoir, UT — storage

Storage now, against this reservoir's own record

104.20 Mm³

Stored, September 1965

100th

Percentile among 28 Seps on record

+29.0%

Change over the 12 months to 1965-09

Storage in September 1965 was higher than almost every other Sep on record, ranked against 28 other Seps held for this reservoir. It is the highest in the held record for this month.

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, 1936–1965

Monthly mean storage

345 monthly values, 1936 to 1965

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 345 periods, evenly spaced across the record. Every value is in the download and the API; a table of all 345 would be longer than this page and unusable with a screen reader.
Period	Pineview Reservoir Near Ogden, UT (Mm³)
December 1936	3.77
January 1937	5.66
March 1937	1.18
April 1937	6.97
June 1937	31.7
July 1937	28.8
September 1937	14.8
October 1937	12.7
December 1937	14.8
January 1938	15.4
February 1938	18.8
April 1938	36.4
May 1938	49.6
July 1938	46.7
August 1938	39.2
October 1938	29.8
November 1938	24.9
December 1938	16.4
February 1939	3.49
March 1939	5.42
May 1939	51.1
June 1939	48.3
August 1939	31.2
September 1939	23.9
November 1939	22.1
December 1939	23.1
January 1940	21.0
March 1940	17.8
April 1940	34.0
June 1940	45.3
July 1940	32.8
September 1940	9.38
October 1940	8.01
November 1940	6.43
January 1941	2.53
February 1941	2.42
April 1941	20.0
May 1941	50.0
July 1941	44.6
August 1941	36.6
October 1941	25.3
November 1941	24.0
December 1941	22.0
February 1942	11.0
March 1942	7.52
May 1942	50.9
June 1942	51.9
August 1942	33.4
September 1942	24.3
November 1942	20.1
December 1942	19.0
January 1943	14.6
March 1943	18.8
April 1943	41.9
June 1943	53.6
July 1943	45.2
September 1943	22.5
October 1943	17.8
November 1943	18.4
January 1944	12.8
February 1944	12.7
April 1944	17.0
May 1944	45.2
July 1944	44.6
August 1944	30.2
October 1944	10.3
November 1944	3.56
December 1944	0.837
February 1945	2.66
March 1945	3.56
May 1945	50.1
June 1945	54.0
August 1945	36.7
September 1945	25.6
November 1945	0.574
December 1945	0.959
January 1946	4.95
March 1946	8.61
April 1946	31.2
June 1946	50.8
July 1946	38.2
September 1946	13.6
October 1946	9.68
November 1946	10.4
January 1947	3.69
February 1947	3.99
April 1947	27.3
May 1947	52.0
July 1947	42.0
August 1947	28.6
October 1947	14.2
November 1947	4.80
December 1947	2.08
February 1948	3.14
March 1948	1.50
May 1948	46.2
June 1948	52.5
August 1948	28.7
September 1948	15.7
October 1948	11.5
December 1948	12.1
January 1949	7.16
March 1949	4.23
April 1949	16.9
June 1949	53.3
July 1949	44.3
October 1949	13.8
November 1949	14.2
December 1949	13.5
February 1950	11.6
March 1950	11.4
May 1950	33.6
June 1950	53.4
August 1950	35.7
September 1950	23.3
November 1950	19.0
December 1950	25.4
January 1951	23.8
March 1951	16.4
April 1951	23.0
June 1951	52.5
July 1951	42.1
September 1951	20.9
October 1951	15.7
November 1951	15.6
January 1952	7.02
February 1952	2.19
April 1952	20.0
May 1952	46.3
July 1952	47.9
August 1952	34.0
October 1952	14.1
November 1952	12.5
December 1952	12.3
February 1953	16.2
March 1953	17.9
May 1953	51.7
June 1953	54.1
August 1953	29.5
September 1953	13.9
November 1953	1.05
December 1953	1.90
January 1954	1.42
March 1954	9.24
April 1954	23.0
June 1954	40.4
July 1954	30.5
September 1954	7.75
October 1954	4.58
November 1954	5.03
January 1955	6.50
February 1955	4.99
April 1955	13.1
May 1955	47.0
July 1955	41.3
August 1955	26.8
October 1955	8.33
November 1955	6.76
December 1955	3.72
February 1956	27.7
March 1956	9.10
May 1956	52.7
June 1956	51.7
August 1956	24.5
September 1956	11.8
October 1956	2.84
December 1956	0.104
January 1957	0.393
March 1957	13.8
April 1957	21.4
June 1957	68.6
July 1957	58.7
September 1957	29.2
October 1957	23.6
November 1957	23.9
January 1958	15.8
February 1958	15.6
April 1958	11.2
May 1958	45.4
July 1958	50.1
August 1958	34.4
October 1958	14.4
November 1958	14.6
December 1958	14.9
February 1959	17.8
March 1959	23.0
May 1959	47.6
June 1959	44.9
August 1959	16.7
September 1959	7.49
October 1959	6.21
December 1959	8.40
January 1960	10.8
March 1960	20.4
April 1960	59.9
June 1960	92.6
July 1960	64.2
September 1960	17.7
October 1960	7.12
November 1960	2.65
January 1961	7.56
February 1961	11.1
April 1961	24.2
May 1961	30.1
July 1961	20.0
August 1961	9.93
October 1961	5.52
November 1961	7.84
December 1961	11.3
February 1962	29.1
March 1962	45.1
May 1962	123
June 1962	133
August 1962	85.5
September 1962	66.9
October 1962	60.7
December 1962	64.1
January 1963	66.5
March 1963	81.1
April 1963	99.6
June 1963	134
July 1963	114
September 1963	71.5
October 1963	68.2
November 1963	71.2
January 1964	67.6
February 1964	63.2
April 1964	61.2
May 1964	108
July 1964	127
August 1964	102
September 1964	80.8
November 1964	69.1
December 1964	66.2
February 1965	83.4
March 1965	76.1
May 1965	125
June 1965	136
August 1965	115
September 1965	104

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

+1.95 Mm³

Mean change per month over 12 months

0 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

Pineview Reservoir Near Ogden, UT

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	1936–1965
Completeness	95.8% 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	96% of the months between 1936 and 1965 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-10139000.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), Pineview Reservoir Near Ogden, UT reservoir records, accessed 2026-10-05, hydrionis.com/reservoirs/reservoir-usgs-10139000/

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 Pineview Reservoir Near Ogden, UT 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

345 monthly observations 1936–1965 Mm³

Spatially aggregatedHigh confidenceSeptember 1965

Source: USGS — National Water Information System, 10139000. 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.