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IRONSTONE CANAL
Structure dossier · WDID 4100534 · 1 · UNCOMPAHGRE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 21:05 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 1882-01-05 — 8th most senior of the 1104 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: BOLES & MANNEY D (1881-12-27). Immediately behind: HOMESTAKE DITCH (1882-01-05).
Decreed rights (7)
| 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 |
|---|---|---|---|---|---|---|---|
| 11693.0 | 1882-01-05 | 1890-06-30 | 4.897 | 0.0 | C | IRRDOMSTK | 5 |
| 11962.0 | 1882-10-01 | 1890-06-30 | 2.5 | 0.0 | C | IRR | 21 |
| 11999.0 | 1882-11-07 | 1890-06-30 | 37.5 | 0.0 | C | IRR | 20, 25 |
| 12013.0 | 1882-11-21 | 1890-06-30 | 1.83 | 0.0 | C | IRR | 26 |
| 12655.0 | 1884-08-24 | 1890-06-30 | 21.0 | 0.0 | C | IRRDOMSTK | 53 |
| 13239.0 | 1886-03-31 | 1890-06-30 | 76.0 | 0.0 | C | IRRDOMSTK | 47, 72 |
| 14198.0 | 1888-11-14 | 1890-06-30 | 59.0 | 0.0 | C | IRRDOMSTK | 112, 69, 9 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 124,340 AF. Its most recent year on record, 2025, came in at 124,340 AF — 100% of that, and 8th 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) |
|---|---|---|---|---|
| 2011 | 131,345 | 10th lowest of 15 · 106% of median | 214 | 427.0 |
| 2012 | 103,818 | 3rd lowest of 15 · 84% of median | 214 | 364.0 |
| 2013 | 100,302 | 2nd lowest of 15 · 81% of median | 214 | 354.0 |
| 2014 | 122,134 | 7th lowest of 15 · 98% of median | 216 | 405.0 |
| 2015 | 104,708 | 4th lowest of 15 · 84% of median | 215 | 360.0 |
| 2016 | 152,304 | 14th lowest of 15 · 122% of median | 306 | 410.0 |
| 2017 | 154,652 | 15th lowest of 15 · 124% of median | 365 | 383.0 |
| 2018 | 94,270 | 1st lowest of 15 · 76% of median | 365 | 292.0 |
| 2019 | 121,713 | 6th lowest of 15 · 98% of median | 334 | 419.0 |
| 2020 | 117,678 | 5th lowest of 15 · 95% of median | 245 | 374.0 |
| 2021 | 131,548 | 11th lowest of 15 · 106% of median | 285 | 378.0 |
| 2022 | 127,072 | 9th lowest of 15 · 102% of median | 365 | 398.0 |
| 2023 | 136,625 | 13th lowest of 15 · 110% of median | 365 | 445.0 |
| 2024 | 134,519 | 12th lowest of 15 · 108% of median | 366 | 505.0 |
| 2025 | 124,340 | 8th lowest of 15 · 100% of median | 304 | 395.0 |
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.