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REGAN RESERVOIR
Structure dossier · WDID 2003553 · 3 · HOUSE CANYON CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 20:25 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.
Which of its rights get called out?
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 1906-09-12 — 826th most senior of the 8016 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: W0148 WELL NO ART 04 (1906-08-31). Immediately behind: 80CW100 WELL FWS 12-2A (1906-12-31).
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 |
|---|---|---|---|---|---|---|---|
| 20708.0 | 1906-09-12 | 1916-09-13 | 515.58 | 0.0 | A | IRR | 1916-67A |
| 51499.50641 | 1988-08-25 | 1991-12-31 | 200.9871 | 0.0 | A | IRR |
Recorded use (last 5 years on record)
In a median year this structure has a recorded diversion of 263 AF. Its most recent year on record, 1992, came in at 309 AF — 118% of that, and 3rd lowest of the 4 years with a recorded volume.
This structure records both diversions and reservoir releases — they are separate water movements and are accounted separately below.
| 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 | Released (AF) | Days recorded | Peak (cfs) |
|---|---|---|---|---|---|
| 1984 | 89 | 1st lowest of 4 · 34% of median | — | 61 | 1.2 |
| 1985 | 217 | 2nd lowest of 4 · 82% of median | — | 304 | 0.4 |
| 1986 | 338 | 4th lowest of 4 · 128% of median | — | 87 | 20.0 |
| 1988 | — | no recorded volume | 159 | 0 | — |
| 1992 | 309 | 3rd lowest of 4 · 118% of median | — | 61 | 4.0 |
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.