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VINAL HAYWARD PIPELINE
Structure dossier · WDID 4500805 · 7 · COLORADO RIVER · DWR record
Where this page's figures come from
Generated 2026-08-28 05:24 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 1940-07-15 — 296th most senior of the 1378 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: ESHE PUMP AND DITCH (1930-05-01). Immediately behind: VALLEY FARMS WELL NO 1 (1945-12-31).
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 |
|---|---|---|---|---|---|---|---|
| 34825.33068 | 1940-07-15 | 1953-03-02 | 2.5 | 0.0 | C | IRRINDDOM | 198 |
Legal record & documents
3 decreed actions on record across
2 court cases:
W0073, CA4072.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
W0073 | 1 | 1953-03-02 | S |
CA4072 | 2 | 1953-03-02 | 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 7 years on record)
In a median year this structure has a recorded diversion of 40 AF. Its most recent year on record, 1987, came in at 0 AF — 0% of that, and 1st lowest of the 7 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) |
|---|---|---|---|---|
| 1975 | 153 | 7th lowest of 7 · 382% of median | 34 | 2.3 |
| 1976 | 75 | 6th lowest of 7 · 188% of median | 20 | 2.0 |
| 1977 | 48 | 5th lowest of 7 · 120% of median | 13 | 2.0 |
| 1978 | 40 | 4th lowest of 7 · 100% of median | 11 | 2.0 |
| 1979 | 7 | 2nd lowest of 7 · 18% of median | 3 | 1.9 |
| 1980 | 8 | 3rd lowest of 7 · 20% of median | 3 | 1.9 |
| 1987 | 0 | 1st lowest of 7 · 0% of median | 1 | 0.0 |
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 | 1 right(s), seniority decoded |
| diversion record | fragment | 85 measured day(s) on file (under 180 -- a season, not a history) |
| record continuity | unknown | record too short to assess continuity (needs 2+ years of span and 180+ 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.