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WILLIAMS FORK RESERVOIR
Structure dossier · WDID 5103709 · 3 · WILLIAMS FORK · DWR record
Where this page's figures come from
Generated 2026-08-28 00:22 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 1935-11-10 — 439th most senior of the 2208 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: HENDERSON MINE DEPLETION REACH (1932-07-02). Immediately behind: WILLIAMS FORK RESERVOIR EXCHANGE - MOFFA (1935-11-10).
Decreed rights (5)
| 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 |
|---|---|---|---|---|---|---|---|
| 31359.0 | 1935-11-10 | 1937-11-05 | 93637.0 | 0.0 | A | MUNFIRDOMPWR | RES17 |
| 39095.38998 | 1956-10-09 | 1972-05-30 | 93637.0 | 0.0 | A | IRRMUNINDDOMPWR | |
| 58804.48692 | 1983-04-25 | 2011-12-31 | 0.0 | 0.0 | A | IRRMUNFIRDOM | |
| 58804.48692 | 1983-04-25 | 2011-12-31 | 0.0 | 0.0 | C | IRRMUNFIRDOM | |
| 58804.58705 | 2010-09-23 | 2011-12-31 | 0.0 | 1000.0 | A | RECAUGMINPWROTH |
Legal record & documents
10 decreed actions on record across
5 court cases:
11CW0152, 11CW0021, CA1430, CA0657, 82CW0125.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
11CW0152 | 2 | 2011-12-31 | S |
11CW0021 | 1 | 2011-12-31 | S |
CA1430 | 1 | 1972-05-30 | S |
CA0657 | 5 | 1937-11-05 | S |
82CW0125 | 1 | 1937-11-05 | 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 15 years on record)
In a median year this structure has a recorded diversion of 32,266 AF. Its most recent year on record, 2024, came in at 22,823 AF — 71% of that, and 2nd lowest of the 15 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) |
|---|---|---|---|---|---|
| 2010 | 29,222 | 6th lowest of 15 · 91% of median | 24,607 | 365 | 726.0 |
| 2011 | 33,009 | 9th lowest of 15 · 102% of median | 34,244 | 365 | 814.5 |
| 2012 | 18,527 | 1st lowest of 15 · 57% of median | 55,133 | 366 | 175.9 |
| 2013 | 102,950 | 15th lowest of 15 · 319% of median | 33,256 | 365 | 21194.9 |
| 2014 | 32,266 | 8th lowest of 15 · 100% of median | 35,807 | 335 | 984.1 |
| 2015 | 25,296 | 3rd lowest of 15 · 78% of median | 118,218 | 294 | 534.3 |
| 2016 | 27,710 | 4th lowest of 15 · 86% of median | 22,516 | 335 | 431.0 |
| 2017 | 29,966 | 7th lowest of 15 · 93% of median | 30,816 | 334 | 568.5 |
| 2018 | 40,430 | 11th lowest of 15 · 125% of median | 40,031 | 335 | 2328.2 |
| 2019 | 40,903 | 12th lowest of 15 · 127% of median | 27,880 | 306 | 501.3 |
| 2020 | 27,782 | 5th lowest of 15 · 86% of median | 22,953 | 335 | 403.5 |
| 2021 | 34,411 | 10th lowest of 15 · 107% of median | 35,765 | 365 | 538.8 |
| 2022 | 44,981 | 13th lowest of 15 · 139% of median | 58,343 | 365 | 642.1 |
| 2023 | 62,003 | 14th lowest of 15 · 192% of median | 4,241 | 365 | 709.8 |
| 2024 | 22,823 | 2nd lowest of 15 · 71% of median | 12,067 | 305 | 385.7 |
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 A (9/10 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 | 5 right(s), seniority decoded |
| diversion record | present | 12403 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | continuous | 100% of the irrigation seasons in 1984-2024 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.