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GRAND VALLEY PIPELINE
Structure dossier · WDID 3900719 · 7 · COLORADO RIVER · DWR record
Where this page's figures come from
Generated 2026-08-28 02:35 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 1885-03-15 — 63rd most senior of the 1758 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: DIAMOND DITCH (1885-03-15). Immediately behind: PARACHUTE PUMPING PLANT (1885-03-15).
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 |
|---|---|---|---|---|---|---|---|
| 12858.0 | 1885-03-15 | 1889-05-11 | 0.0 | 0.0 | C | MUN | 35 |
| 37681.21438 | 1908-09-11 | 1965-07-09 | 0.0 | 0.0 | C | MUN | 228 |
| 37681.22431 | 1911-06-01 | 1965-07-09 | 0.0 | 0.0 | C | MUN | 232 |
| 38885.0 | 1956-06-18 | 1966-11-10 | 0.78 | 29.22 | C | MUNFIRDOM | 321 |
Legal record & documents
5 decreed actions on record across
4 court cases:
CA4914, 94CW0100, W3894, 83CW0052.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA4914 | 1 | 1966-11-10 | S |
94CW0100 | 1 | 1966-11-10 | S |
W3894 | 2 | 1965-07-09 | S |
83CW0052 | 1 | 1889-05-11 | O |
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 71 AF. Its most recent year on record, 2024, came in at 93 AF — 131% 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) |
|---|---|---|---|---|
| 1997 | 2 | 1st lowest of 15 · 3% of median | 6 | 0.7 |
| 1998 | 2 | 1st lowest of 15 · 3% of median | 2 | 0.8 |
| 2000 | 11 | 4th lowest of 15 · 16% of median | 9 | 0.8 |
| 2002 | 22 | 5th lowest of 15 · 31% of median | 61 | 0.2 |
| 2003 | 130 | 15th lowest of 15 · 183% of median | 321 | 0.5 |
| 2004 | 95 | 14th lowest of 15 · 134% of median | 121 | 0.5 |
| 2016 | 7 | 3rd lowest of 15 · 10% of median | 61 | 0.2 |
| 2017 | 94 | 13th lowest of 15 · 132% of median | 365 | 0.6 |
| 2018 | 93 | 11th lowest of 15 · 131% of median | 365 | 0.6 |
| 2019 | 78 | 10th lowest of 15 · 110% of median | 365 | 0.4 |
| 2020 | 42 | 6th lowest of 15 · 59% of median | 366 | 0.4 |
| 2021 | 50 | 7th lowest of 15 · 70% of median | 365 | 0.5 |
| 2022 | 71 | 8th lowest of 15 · 100% of median | 365 | 0.6 |
| 2023 | 74 | 9th lowest of 15 · 104% of median | 365 | 1.0 |
| 2024 | 93 | 11th lowest of 15 · 131% of median | 305 | 0.7 |
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 B (7/10 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 | 4 right(s), seniority decoded |
| diversion record | present | 5046 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 32% of the irrigation seasons in 1950-2024 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.