HydrionisGlobal Water Intelligence
Monitored reservoir

Paonia Reservoir Near Bardine, CO

United States Geological Survey reservoir gauge 09131495 in CO, with published storage from 1987.

Storage record09131495

Storage now, against this reservoir's own record

0.32 Mm³
Stored, September 2026
10th
Percentile among 21 Seps on record

Storage in September 2026 was lower than most Seps on record, ranked against 21 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, 1987–2026

Monthly mean storage
235 monthly values, 1987 to 2026
Monthly mean storageMonthly mean storage: Paonia Reservoir Near Bardine, CO in Mm³, from 1987.8333333333333 to 2026.6666666666667.01020Mm³1987.83333333333331990.519932007.66666666666672010.16666666666672012.66666666666672020.08333333333332024.1666666666667Year

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
Underlying data
PeriodPaonia Reservoir Near Bardine, CO (Mm³)
November 198719.7
December 198721.6
January 198822.9
April 19884.62
May 198811.9
June 198823.0
July 198821.4
August 198812.0
September 19883.99
October 19884.49
November 19885.01
December 19885.45
January 19895.86
February 19896.29
March 19895.34
April 19894.05
May 198918.5
June 198923.0
July 198920.6
August 198912.7
September 19892.78
October 19891.14
November 19891.83
December 19892.18
January 19902.64
February 19903.73
March 19905.74
April 199012.0
May 199020.6
June 199020.8
July 199018.3
August 19907.63
September 19900.768
October 19901.86
November 19903.20
December 19904.18
January 19915.11
February 19915.92
March 19917.35
April 19916.46
May 19913.76
June 199118.8
July 199120.5
August 199115.2
September 19915.37
October 19911.21
November 19912.17
December 19913.11
January 19923.65
February 19924.09
March 19925.32
April 19923.54
May 199217.0
June 199220.8
July 199220.4
August 199214.9
September 19927.55
October 19922.59
November 19922.44
December 19921.72
January 19932.62
February 19933.56
March 19933.48
April 19932.03
May 199317.5
June 199321.1
July 199320.6
August 199320.1
September 199316.6
October 20054.53
November 20053.85
January 20063.28
February 20063.65
April 20063.82
May 200618.8
June 200621.0
July 200619.8
August 200612.2
September 20062.94
October 20063.71
November 20061.70
December 20062.70
January 20071.80
February 20071.80
March 20072.82
April 20079.07
May 200719.4
June 200719.4
July 200717.0
August 20079.81
September 20071.78
October 20072.23
November 20071.29
December 20071.86
January 20081.85
February 20081.73
March 20081.72
April 20081.14
May 20085.51
June 200817.1
July 200819.4
August 200817.7
September 20089.59
October 20085.78
November 20085.38
December 20085.75
January 20094.93
February 20092.86
March 20092.29
April 20093.57
May 20098.84
June 200919.5
July 200919.0
August 200912.1
September 20092.02
October 20090.769
November 20091.27
December 20091.34
January 20101.71
February 20101.58
March 20101.41
April 20101.99
May 20106.85
June 201019.3
July 201018.0
August 201013.3
September 20103.98
October 20100.803
November 20100.763
December 20101.23
January 20111.25
February 20110.877
March 20111.62
April 20110.995
May 20111.28
June 201111.3
July 201119.5
August 201116.9
September 20117.57
October 20111.10
November 20110.724
December 20110.656
January 20120.736
February 20120.748
March 20121.17
April 20128.02
May 201218.6
June 201217.6
July 20127.52
August 20120.380
September 20120.015
October 20120.025
October 20170.298
November 20171.57
December 20172.12
January 20182.79
February 20183.73
March 20185.33
April 20189.88
May 201818.2
June 201818.5
July 20188.97
August 20181.06
September 20180.925
October 20181.16
November 20181.95
December 20182.72
January 20193.55
February 20194.45
March 20195.36
April 20194.55
May 20197.99
June 201916.5
July 201919.4
August 201918.0
September 20199.06
October 20190.837
November 20190.681
December 20192.23
January 20203.86
February 20205.46
March 20207.76
April 202012.0
May 202018.1
June 202019.3
August 20202.20
September 20200.572
October 20200.844
March 20215.77
April 20219.38
May 202118.0
June 202119.1
July 202113.0
August 20212.91
September 20211.15
June 202219.3
July 202216.9
August 20227.28
September 20220.576
October 20220.720
May 202316.7
June 202319.5
July 202319.2
August 202315.3
September 20235.35
October 20230.697
November 20231.61
December 20231.89
January 20241.93
February 20242.85
March 20244.19
April 20246.62
May 202417.1
June 202419.3
July 202418.3
August 20249.89
October 20240.646
November 20241.94
December 20241.65
January 20251.62
February 20252.95
March 20255.68
April 202512.9
May 202519.2
June 202519.1
July 202512.6
August 20251.16
September 20250.195
December 20253.26
January 20264.06
May 202619.0
June 202618.1
July 20267.25
August 20260.318
September 20260.315

Why this page shows a volume and not a percentage

Rate and persistence

10 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

Paonia Reservoir Near Bardine, CO
Gauge location
Paonia Reservoir Near Bardine, COPaonia Reservoir Near Bardine, CO — 0.32 Mm³Paonia Reservoir Near Bardine, CO — 0.32 Mm³

About this data

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 existMeasured
Period held1987–2026
Completeness49.0% 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.
Continuity49% of the months between 1987 and 2026 are held. Monthly means of the publisher's own daily record.
Last read from the publisher2026-10-01
RedistributionPermitted by the upstream licences
Commercial reusePermitted by the upstream licences. No Hydrionis access tier can widen this.
MethodologyHow this was produced

Use this data

Use this data

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), Paonia Reservoir Near Bardine, CO reservoir records, accessed 2026-10-05, hydrionis.com/reservoirs/reservoir-usgs-09131495/

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 Paonia Reservoir Near Bardine, CO 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

235 monthly observations 1987–2026 Mm³
Spatially aggregatedHigh confidenceSeptember 2026

Source: USGS — National Water Information System, 09131495. 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.

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