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WILLIAMS FORK TUNNEL
Structure dossier · WDID 5104603 · 7 · WILLIAMS FORK · DWR record
Where this page's figures come from
Generated 2026-08-28 00:10 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 1921-07-04 — 408th most senior of the 2208 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: FRASER RIVER DIVERSION PROJECT - VASQUEZ (1921-07-04). Immediately behind: MOFFAT WATER TUNNEL (1921-07-04).
Decreed rights (1)
| 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 |
|---|---|---|---|---|---|---|---|
| 30870.26117 | 1921-07-04 | 1937-11-05 | 254.0 | 366.0 | C | MUNFIRDOM |
Legal record & documents
3 decreed actions on record across
2 court cases:
CA0657, 07CW0031.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA0657 | 2 | 1937-11-05 | S |
07CW0031 | 1 | 1937-11-05 | S |
DWR's own records for this structure: net amounts · transactions & adjudication history · scanned decrees (search a case number there for the imaged document). On this site: the district's full legal picture →
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 4,171 AF. Its most recent year on record, 2024, came in at 2,476 AF — 59% of that, and 3rd 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 | 2,738 | 4th lowest of 15 · 66% of median | 365 | 97.6 |
| 2011 | 4,171 | 8th lowest of 15 · 100% of median | 365 | 64.9 |
| 2012 | 8,099 | 14th lowest of 15 · 194% of median | 366 | 72.1 |
| 2013 | 3,585 | 7th lowest of 15 · 86% of median | 365 | 60.4 |
| 2014 | 644 | 1st lowest of 15 · 15% of median | 365 | 9.9 |
| 2015 | 3,491 | 5th lowest of 15 · 84% of median | 296 | 45.5 |
| 2016 | 1,906 | 2nd lowest of 15 · 46% of median | 259 | 41.0 |
| 2017 | 6,356 | 11th lowest of 15 · 152% of median | 365 | 54.8 |
| 2018 | 6,597 | 12th lowest of 15 · 158% of median | 365 | 138.0 |
| 2019 | 6,691 | 13th lowest of 15 · 160% of median | 365 | 113.2 |
| 2020 | 10,165 | 15th lowest of 15 · 244% of median | 366 | 153.0 |
| 2021 | 4,327 | 9th lowest of 15 · 104% of median | 365 | 148.1 |
| 2022 | 4,449 | 10th lowest of 15 · 107% of median | 365 | 50.1 |
| 2023 | 3,552 | 6th lowest of 15 · 85% of median | 365 | 41.6 |
| 2024 | 2,476 | 3rd lowest of 15 · 59% of median | 305 | 32.6 |
Trends for this structure
Recorded use shows no clear trend over its last 15 recorded years — which is itself worth knowing.
How good is our record of it?
Grade A (9/10 points) — the components below are the finding; the letter alone is not.
The rubric, component by component
| Check | State | Detail |
|---|---|---|
| identity | complete | name, type, and water source all on file |
| decreed rights | on file | 1 right(s), seniority decoded |
| diversion record | present | 12162 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | continuous | 100% of the irrigation seasons in 1984-2024 carry measured days |
| published-record stability | stable | no upstream revisions recorded against this structure |
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.