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MOFFAT WATER TUNNEL
Structure dossier · WDID 5104655 · 7 · FRASER RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 19:54 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 in line
Priority 1921-07-04 — 409th 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: WILLIAMS FORK TUNNEL (1921-07-04). Immediately behind: GAINS NO 1 DITCH (1922-06-10).
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 | 928.0 | 352.0 | C | MUNFIRDOM |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 42,268 AF. Its most recent year on record, 2024, came in at 30,603 AF — 72% of that, and 6th 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 | 29,453 | 5th lowest of 15 · 70% of median | 365 | 505.6 |
| 2011 | 53,637 | 14th lowest of 15 · 127% of median | 365 | 863.0 |
| 2012 | 41,936 | 7th lowest of 15 · 99% of median | 366 | 272.7 |
| 2013 | 56,223 | 15th lowest of 15 · 133% of median | 365 | 715.2 |
| 2014 | 23,595 | 1st lowest of 15 · 56% of median | 365 | 132.7 |
| 2015 | 23,716 | 2nd lowest of 15 · 56% of median | 365 | 144.0 |
| 2016 | 24,959 | 3rd lowest of 15 · 59% of median | 366 | 194.1 |
| 2017 | 42,268 | 8th lowest of 15 · 100% of median | 365 | 325.0 |
| 2018 | 49,208 | 11th lowest of 15 · 116% of median | 365 | 696.0 |
| 2019 | 49,539 | 12th lowest of 15 · 117% of median | 365 | 624.0 |
| 2020 | 53,327 | 13th lowest of 15 · 126% of median | 366 | 654.0 |
| 2021 | 43,397 | 9th lowest of 15 · 103% of median | 365 | 606.0 |
| 2022 | 49,113 | 10th lowest of 15 · 116% of median | 365 | 299.0 |
| 2023 | 27,203 | 4th lowest of 15 · 64% of median | 365 | 244.0 |
| 2024 | 30,603 | 6th lowest of 15 · 72% of median | 305 | 296.0 |
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.