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COOPER NO 2 D
Structure dossier · WDID 6200569 · 1 · GUNNISON RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 21:15 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.
Where it sits
Location as DWR records it. Faint dots are the neighbouring water; click any to open it.
Which of its rights are out of priority?
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 1887-09-01 — 54th most senior of the 1980 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: PASSTIME NO 1 DITCH (1887-06-15). Immediately behind: COLLIER DITCH (1889-09-01).
Decreed rights (4)
| 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 |
|---|---|---|---|---|---|---|---|
| 13758.0 | 1887-09-01 | 1904-03-28 | 4.3 | 0.0 | C | IRR | 60 |
| 27585.13758 | 1887-09-01 | 1941-04-21 | 12.2 | 0.0 | C | IRR | 201 |
| 27585.14062 | 1888-07-01 | 1941-04-21 | 6.5 | 0.0 | C | IRR | 204 |
| 27585.19811 | 1904-03-29 | 1941-04-21 | 3.5 | 0.0 | C | IRR | 248 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 935 AF. Its most recent year on record, 2025, came in at 3 AF — 0% of that, and 1st lowest of the 15 years with a recorded volume.
| 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 | Days recorded | Peak (cfs) |
|---|---|---|---|---|
| 2010 | 1,094 | 10th lowest of 15 · 117% of median | 44 | 16.5 |
| 2011 | 935 | 8th lowest of 15 · 100% of median | 73 | 15.0 |
| 2012 | 874 | 6th lowest of 15 · 94% of median | 92 | 5.2 |
| 2013 | 1,404 | 12th lowest of 15 · 150% of median | 73 | 14.1 |
| 2014 | 868 | 5th lowest of 15 · 93% of median | 59 | 10.1 |
| 2015 | 523 | 2nd lowest of 15 · 56% of median | 26 | 13.5 |
| 2017 | 1,242 | 11th lowest of 15 · 133% of median | 46 | 19.6 |
| 2018 | 884 | 7th lowest of 15 · 94% of median | 94 | 10.2 |
| 2019 | 1,887 | 15th lowest of 15 · 202% of median | 108 | 44.0 |
| 2020 | 1,514 | 14th lowest of 15 · 162% of median | 110 | 13.3 |
| 2021 | 783 | 3rd lowest of 15 · 84% of median | 69 | 16.0 |
| 2022 | 799 | 4th lowest of 15 · 86% of median | 76 | 9.5 |
| 2023 | 940 | 9th lowest of 15 · 100% of median | 70 | 12.6 |
| 2024 | 1,432 | 13th lowest of 15 · 153% of median | 62 | 16.5 |
| 2025 | 3 | 1st lowest of 15 · 0% of median | 27 | 0.1 |
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.