HydrionisGlobal Water Intelligence
Monitored reservoir

Trinidad Lake Near Trinidad, Co.

United States Geological Survey reservoir gauge 07124400 in CO, with published storage from 1989.

Storage record07124400

Storage now, against this reservoir's own record

23.02 Mm³
Stored, October 2019
80th
Percentile among 31 Octs on record
+9.2%
Against the Oct 1991–2020 average
+1.3%
Change over the 12 months to 2019-10

Storage in October 2019 was higher than most Octs on record, ranked against 31 other Octs held for this reservoir.

Storage, 1989–2019

Monthly mean storage
361 monthly values, 1989 to 2019
Monthly mean storageMonthly mean storage: Trinidad Lake Near Trinidad, Co. in Mm³, from 1989.75 to 2019.75.0255075100Mm³1989.751993.58333333333331997.41666666666672001.252005.08333333333332008.91666666666672012.752016.5833333333333Year

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 361 periods, evenly spaced across the record. Every value is in the download and the API; a table of all 361 would be longer than this page and unusable with a screen reader.
PeriodTrinidad Lake Near Trinidad, Co. (Mm³)
October 19897.84
December 198910.0
January 199011.1
March 199013.0
April 199013.4
June 19908.56
July 19908.15
September 19906.31
October 19908.77
December 199013.3
January 199114.7
March 199116.7
April 199116.8
June 19918.36
July 19917.75
September 19919.30
October 199113.3
December 199117.7
January 199219.4
March 199222.0
April 199223.4
June 199212.0
July 199210.3
September 19929.84
October 19926.08
December 19929.73
January 199311.9
March 199314.9
April 199321.3
June 199327.9
July 199326.4
September 199326.7
October 199322.0
December 199325.5
January 199426.9
March 199429.9
April 199433.5
June 199438.4
July 199428.8
September 199414.3
October 199413.3
December 199415.7
January 199516.8
March 199519.3
April 199520.4
June 199526.8
July 199545.6
September 199528.4
October 199528.3
December 199532.5
January 199634.0
March 199636.9
April 199637.4
June 199613.6
July 199611.6
September 199610.1
October 199610.2
December 199612.7
January 199713.9
March 199716.4
April 199718.1
June 199727.2
July 199724.0
September 199722.9
October 199718.8
December 199723.8
January 199826.2
March 199829.9
April 199833.4
June 199827.1
July 199822.6
September 199819.2
October 199817.7
December 199823.2
January 199924.8
March 199927.0
April 199928.7
June 199986.5
July 199988.6
September 199981.2
November 199978.4
December 199980.6
February 200084.3
March 200086.1
May 200084.1
June 200074.1
August 200049.1
September 200038.9
November 200036.0
December 200037.1
February 200139.4
March 200140.9
May 200142.8
June 200137.4
August 200122.0
September 200118.9
November 200118.8
December 200119.6
February 200221.4
March 200222.2
May 200220.6
June 200217.5
August 200215.9
September 200215.8
November 200217.6
December 200218.3
February 200320.0
March 200320.9
May 200322.3
June 200317.6
August 200315.0
September 200314.3
November 200317.2
December 200318.6
February 200421.3
March 200422.8
May 200436.9
June 200431.5
August 200425.6
September 200423.5
November 200423.6
December 200426.1
February 200530.9
March 200533.7
May 200538.6
June 200538.8
August 200527.4
September 200521.9
November 200519.5
December 200521.5
February 200624.1
March 200625.4
May 200625.2
June 200622.1
August 200618.5
September 200617.6
November 200620.9
December 200623.7
February 200730.6
March 200736.1
May 200739.0
June 200739.2
August 200730.5
September 200725.6
November 200723.3
December 200725.6
February 200829.8
March 200832.2
May 200835.7
June 200830.0
August 200822.1
September 200820.8
November 200820.0
December 200822.8
February 200927.5
March 200929.1
May 200932.9
June 200930.3
August 200920.6
September 200917.2
November 200919.2
January 201022.4
February 201023.8
April 201035.3
May 201037.0
July 201027.1
August 201024.2
October 201016.7
November 201018.0
January 201121.2
February 201122.6
April 201125.4
May 201123.4
July 201118.6
August 201116.5
October 201115.5
November 201115.0
January 201218.3
February 201219.4
April 201222.8
May 201223.3
July 201215.2
August 201213.4
October 201212.3
November 201213.0
January 201314.6
February 201315.4
April 201315.6
May 201313.9
July 201311.9
August 201314.7
October 201313.2
November 201315.8
January 201419.3
February 201420.6
April 201422.4
May 201418.5
July 201415.8
August 201415.0
October 201414.5
November 201416.4
January 201519.2
February 201520.8
April 201525.8
May 201530.3
July 201541.3
August 201538.1
October 201526.4
November 201528.4
January 201631.9
February 201633.5
April 201635.8
May 201641.1
July 201637.4
August 201631.3
October 201626.0
November 201626.5
January 201729.2
February 201730.6
April 201737.7
May 201746.6
July 201744.6
August 201742.7
October 201738.3
November 201742.7
January 201848.1
February 201848.4
April 201847.2
May 201841.3
July 201828.0
August 201824.7
October 201822.7
November 201823.7
January 201925.5
February 201926.4
April 201929.1
May 201929.5
July 201930.8
August 201928.3
October 201923.0

The reservoir's year

Seasonal storage profile
Each calendar month's reference average, against the most recent year
Seasonal storage profileSeasonal storage profile: 1991–2020 average, Most recent 12 months in Mm³, from 1 to 12.010203040Mm³123456789101112Month1991–2020 average 1: 25.9 Mm³1991–2020 average 2: 27.3 Mm³1991–2020 average 3: 28.8 Mm³1991–2020 average 4: 31.2 Mm³1991–2020 average 5: 32.7 Mm³1991–2020 average 6: 30.9 Mm³1991–2020 average 7: 28.4 Mm³1991–2020 average 8: 25.9 Mm³1991–2020 average 9: 22.6 Mm³1991–2020 average 10: 21.1 Mm³1991–2020 average 11: 22.8 Mm³1991–2020 average 12: 24.6 Mm³Most recent 12 months 1: 25.5 Mm³Most recent 12 months 2: 26.4 Mm³Most recent 12 months 3: 27.4 Mm³Most recent 12 months 4: 29.1 Mm³Most recent 12 months 5: 29.5 Mm³Most recent 12 months 6: 29.2 Mm³Most recent 12 months 7: 30.8 Mm³Most recent 12 months 8: 28.3 Mm³Most recent 12 months 9: 24.7 Mm³Most recent 12 months 10: 23.0 Mm³Most recent 12 months 11: 23.7 Mm³Most recent 12 months 12: 24.8 Mm³
  • 1991–2020 average
  • Most recent 12 months

Twelve separate averages, one per calendar month. A January average describes Januaries only. Months are plotted 1–12.

View the data behind this chart
Underlying data
Period1991–2020 average (Mm³)Most recent 12 months (Mm³)
Jan25.925.5
Feb27.326.4
Mar28.827.4
Apr31.229.1
May32.729.5
Jun30.929.2
Jul28.430.8
Aug25.928.3
Sep22.624.7
Oct21.123.0
Nov22.823.7
Dec24.624.8

Why this page shows a volume and not a percentage

Rate and persistence

+0.02 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

Trinidad Lake Near Trinidad, Co.
Gauge location
Trinidad Lake Near Trinidad, Co.Trinidad Lake Near Trinidad, Co. — 23.02 Mm³Trinidad Lake Near Trinidad, Co. — 23.02 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 held1989–2019
Completeness97.0% 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.
Continuity97% of the months between 1989 and 2019 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), Trinidad Lake Near Trinidad, Co. reservoir records, accessed 2026-10-05, hydrionis.com/reservoirs/reservoir-usgs-07124400/

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 Trinidad Lake Near Trinidad, 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

361 monthly observations 1989–2019 Mm³
Spatially aggregatedHigh confidenceOctober 2019

Source: USGS — National Water Information System, 07124400. 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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