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TRINIDAD RESERVOIR
Structure dossier · WDID 1903935 · 3 · PURGATOIRE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 20:42 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (2deb1d7) — every figure regenerates from this named code version and data image.
Which of its rights get called out?
Not computable for this structure: this structure is not on the modelled flow network, so no reference gage can honestly stand in for it.
Where it sits in line
Priority 1861-05-31 — 6th most senior of the 735 structures with decreed rights in this water districtDWR's administrative subdivision of a river basin; the unit calls are usually stated in..
Under prior appropriationColorado's rule for sharing water: first in time, first in right. Age decides, not proximity or need., everything ahead of it in this line is satisfied in full before it receives any water. Immediately ahead: WHISKEY CREEK DIVERSION (1861-05-31). Immediately behind: MAXWELL DITCH NO 10 (1861-11-01).
Decreed rights (21)
| Admin noDWR's numeric encoding of a water right's seniority. Smaller is more senior; the integer part counts days from 1849-12-31 to the date that ranks the right. | AppropriatedWhen water was first put to beneficial use. It sets seniority unless a prior adjudication date is later. | AdjudicatedWhen the water court confirmed the right. A use decreed in 1975 was not a decreed use in 1955, however old the appropriation is. | AbsoluteA right actually put to use, as opposed to conditional -- a placeholder for a use not yet made. | ConditionalA right reserving a place in line for a use not yet made; it must be diligently pursued or it lapses. | Units | UsesWhat the court said this water may be used for -- irrigation, municipal supply, augmentation and so on. | Case |
|---|---|---|---|---|---|---|---|
| 4169.0 | 1861-05-31 | 1903-08-10 | 0.0 | 0.0 | C | IRRMUNCOM | 1 |
| 4323.0 | 1861-11-01 | 1903-08-10 | 0.0 | 0.0 | C | RECFISWLD | 2 |
| 4352.0 | 1861-11-30 | 1903-08-10 | 0.0 | 0.0 | C | IRRMUNCOM | 3 |
| 4384.0 | 1862-01-01 | 1903-08-10 | 0.0 | 0.0 | C | IRRMUNCOM | 4 |
| 4462.0 | 1862-03-20 | 1903-08-10 | 0.0 | 0.0 | C | IRRMUNINDRECFIS | 5 |
| 4474.0 | 1862-04-01 | 1903-08-10 | 0.0 | 0.0 | C | IRRMUNCOM | 6 |
| 4749.0 | 1863-01-01 | 1903-08-10 | 0.0 | 0.0 | C | STOIRRMUNCOMINDRECFISFIRDOMAUG | 9 |
| 5114.0 | 1864-01-01 | 1903-08-10 | 0.712 | 0.0 | C | STOIRRMUNCOMINDRECFISFIRAUGWLD | 13 |
| 5214.0 | 1864-04-10 | 1903-08-10 | 0.0 | 0.0 | C | STOIRRMUNCOMINDRECFISFIRDOMAUG | 15 |
| 5759.0 | 1865-10-07 | 1903-08-10 | 1.14 | 0.0 | C | STOIRRMUNCOMINDRECFISFIRDOMAUG | 20 |
| 5994.0 | 1866-05-30 | 1903-08-10 | 0.0 | 0.0 | C | ALL | 26 |
| 5995.0 | 1866-05-31 | 1903-08-10 | 0.0 | 0.0 | C | STOIRRMUNCOMINDRECFISFIRDOMAUG | 27 |
| 6149.0 | 1866-11-01 | 1903-08-10 | 0.0 | 0.0 | C | ALL | 28 |
| 6391.0 | 1867-07-01 | 1903-08-10 | 0.0 | 0.0 | C | ALL | 36 |
| 6635.0 | 1868-03-01 | 1903-08-10 | 0.0 | 0.0 | C | STOIRRMUNIND | 38 |
| 8825.0 | 1874-02-28 | 1903-08-10 | 0.0 | 0.0 | C | ALL | 68 |
| 10866.0 | 1879-10-01 | 1903-08-10 | 0.0 | 0.0 | A | STOIRRMUNIND | R1 |
| 19579.19285 | 1902-10-20 | 1925-01-12 | 0.0 | 0.0 | C | STOIRRMUNCOMINDRECFISFIRDOMAUG | 145 |
| 21205.0 | 1908-01-22 | 1925-01-12 | 20000.0 | 0.0 | A | STOIRRMUNINDRECFISDOMSTKEVP | 0, 168 |
| 21205.0 | 1908-01-22 | 1925-01-12 | 728.0 | 0.0 | C | STOIRRMUNINDRECFISDOMSTKEVP | 0, 168 |
| 51864.50895 | 1989-05-06 | 1992-12-31 | 72378.06 | 5621.94 | A | STOIRRMUNINDRECFISDOMSTKEVP |
Recorded use (last 10 years on record)
In a median year this structure has a recorded diversion of 12,872 AF. Its most recent year on record, 2024, came in at 8,782 AF — 68% of that, and 3rd lowest of the 7 years with a recorded volume.
This structure records both diversions and reservoir releases — they are separate water movements and are accounted separately below.
| Year | Diverted (AFA volume: one acre covered a foot deep, about 326,000 gallons -- roughly a suburban household's outdoor use for a year.) | Compared with its own record | Released (AF) | Days recorded | Peak (cfs) |
|---|---|---|---|---|---|
| 2011 | — | no recorded volume | 0 | 0 | — |
| 2012 | — | no recorded volume | 186 | 0 | — |
| 2013 | — | no recorded volume | 4 | 0 | — |
| 2018 | 1,911 | 1st lowest of 7 · 15% of median | — | 61 | 32.5 |
| 2019 | 75,338 | 7th lowest of 7 · 585% of median | 714 | 364 | 825.4 |
| 2020 | 13,933 | 5th lowest of 7 · 108% of median | 20,731 | 346 | 77.0 |
| 2021 | 39,129 | 6th lowest of 7 · 304% of median | 28,786 | 304 | 1396.4 |
| 2022 | 2,832 | 2nd lowest of 7 · 22% of median | 484 | 61 | 41.0 |
| 2023 | 12,872 | 4th lowest of 7 · 100% of median | 11,280 | 365 | 174.2 |
| 2024 | 8,782 | 3rd lowest of 7 · 68% of median | 9,861 | 305 | 245.5 |
Advisory reading aid on public data — not an administrative or legal conclusion, not a title opinion, and not a substitute for DWR administration or an engineer's analysis. Methodology review status is disclosed at hydrohistorian's basin pages.