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O'NEILL RESERVOIR
Structure dossier · WDID 3803513 · 3 · ROARING FORK RIVER · DWR record
Where this page's figures come from
Generated 2026-08-28 00:06 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 1950-12-31 — 3268th most senior of the 4788 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: ASPEN MOUNTAIN DITCH (1890-06-01). Immediately behind: PRINCE DITCH (1982-05-15).
Decreed rights (2)
| 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 |
|---|---|---|---|---|---|---|---|
| 51499.36889 | 1950-12-31 | 1991-12-31 | 6.84 | 0.0 | A | RECFISSTKWLD | |
| 51499.5148 | 1990-12-12 | 1991-12-31 | 4.24 | 2.6 | A | IRRFIR |
Legal record & documents
10 decreed actions on record across
7 court cases:
97CW0236, 12CW0138, 99CW0023, 91CW0119, 18CW3062, 93CW0050, 90CW0146.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
97CW0236 | 1 | 1997-12-31 | S |
12CW0138 | 1 | 1997-12-31 | S |
99CW0023 | 1 | 1991-12-31 | S |
91CW0119 | 2 | 1991-12-31 | S |
18CW3062 | 1 | 1991-12-31 | S |
93CW0050 | 2 | 1990-12-31 | S |
90CW0146 | 2 | 1990-12-31 | 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 →
How good is our record of it?
Grade C (6/10 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 | 2 right(s), seniority decoded |
| diversion record | absent | no diversion records cached |
| record continuity | unknown | no record span to measure against |
| 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.