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DUNSTON DITCH
Structure dossier · WDID 4400601 · 1 · EAST FORK WILLIAMS FORK · DWR record
Where this page's figures come from
Generated 2026-08-27 21:13 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (a1c9146) — 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 1889-05-15 — 68th most senior of the 3562 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: 8 F DITCH NO 2 (1889-04-30). Immediately behind: CRAIG IRR DITCH (1890-03-31).
Decreed rights (3)
| 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 |
|---|---|---|---|---|---|---|---|
| 14380.0 | 1889-05-15 | 1894-09-22 | 1.33 | 0.0 | C | IRR | 52 |
| 19250.1438 | 1889-05-15 | 1902-09-18 | 1.42 | 0.0 | C | IRR | 52 |
| 36295.25353 | 1919-06-01 | 1960-09-01 | 3.38 | 0.0 | C | IRR | 36B |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 582 AF. Its most recent year on record, 2025, came in at 745 AF — 128% of that, and 11th 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) |
|---|---|---|---|---|
| 2008 | 765 | 12th lowest of 15 · 131% of median | 120 | 5.0 |
| 2009 | 463 | 7th lowest of 15 · 80% of median | 166 | 2.0 |
| 2010 | 724 | 10th lowest of 15 · 124% of median | 178 | 5.0 |
| 2011 | 272 | 4th lowest of 15 · 47% of median | 79 | 3.0 |
| 2012 | 1,177 | 15th lowest of 15 · 202% of median | 198 | 6.0 |
| 2013 | 930 | 13th lowest of 15 · 160% of median | 181 | 5.0 |
| 2014 | 582 | 8th lowest of 15 · 100% of median | 170 | 3.9 |
| 2015 | 1,077 | 14th lowest of 15 · 185% of median | 182 | 5.8 |
| 2016 | 232 | 3rd lowest of 15 · 40% of median | 153 | 2.0 |
| 2018 | 408 | 6th lowest of 15 · 70% of median | 52 | 4.0 |
| 2019 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 2020 | 614 | 9th lowest of 15 · 106% of median | 66 | 7.2 |
| 2022 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 2024 | 298 | 5th lowest of 15 · 51% of median | 32 | 5.0 |
| 2025 | 745 | 11th lowest of 15 · 128% of median | 94 | 6.7 |
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.