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WILSON RESERVOIR
Structure dossier · WDID 1203817 · 3 · WEST BEAVER CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 19:50 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 1890-06-10 — 309th most senior of the 1967 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: BIGHORN RESERVOIR (1890-06-10). Immediately behind: TATMAN DITCH (1891-03-01).
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 |
|---|---|---|---|---|---|---|---|
| 14771.0 | 1890-06-10 | 1916-02-14 | 668.7323 | 0.0 | A | MUNINDFIRDOMALL | NI25.25 |
Recorded use (last 10 years on record)
In a median year this structure has a recorded diversion of 121 AF. Its most recent year on record, 2025, came in at 23,809 AF — 19677% of that, and 10th lowest of the 10 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) |
|---|---|---|---|---|---|
| 2015 | 41 | 2nd lowest of 10 · 34% of median | — | 14 | 10.4 |
| 2016 | 35 | 1st lowest of 10 · 29% of median | — | 92 | 3.6 |
| 2018 | 80 | 4th lowest of 10 · 66% of median | 68 | 43 | 1.3 |
| 2019 | 205 | 7th lowest of 10 · 169% of median | 58 | 61 | 9.2 |
| 2020 | 155 | 6th lowest of 10 · 128% of median | 217 | 39 | 8.0 |
| 2021 | 87 | 5th lowest of 10 · 72% of median | 87 | 13 | 6.2 |
| 2022 | 49 | 3rd lowest of 10 · 40% of median | — | 154 | 1.3 |
| 2023 | 281 | 8th lowest of 10 · 232% of median | 110 | 365 | 15.1 |
| 2024 | 355 | 9th lowest of 10 · 293% of median | 5,380 | 365 | 50.4 |
| 2025 | 23,809 | 10th lowest of 10 · 19677% of median | 2,609 | 304 | 182.8 |
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.