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WELCH RES
Structure dossier · WDID 0404146 · 3 · BIG THOMPSON RIVER · DWR record
Where this page's figures come from
Generated 2026-08-28 02:57 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 1881-10-01 — 108th most senior of the 1296 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: CEMETERY LAKE RES (1881-07-15). Immediately behind: 0404118 (1882-07-10).
Decreed rights (6)
| 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 |
|---|---|---|---|---|---|---|---|
| 24286.11597 | 1881-10-01 | 1931-04-01 | 1901.16 | 0.0 | A | STOIRRMUNFISAUGCURWLD | |
| 24286.14209 | 1888-11-25 | 1931-04-01 | 688.52 | 0.0 | A | STOIRRMUNFISAUGCURWLD | |
| 24286.19099 | 1902-04-17 | 1931-04-01 | 1262.63 | 0.0 | A | STOIRRMUNFISAUGCURWLD | |
| 24286.19754 | 1904-02-01 | 1931-04-01 | 472.1 | 0.0 | A | STOIRRMUNFISAUGCURWLD | |
| 26084.0 | 1921-06-01 | 1931-04-01 | 630.83 | 0.0 | A | STOIRRMUNFISAUGCURWLD | |
| 29675.26828 | 1923-06-15 | 1939-11-14 | 4955.2 | 0.0 | A | STOIRRMUNFISAUGCURWLD |
Legal record & documents
57 decreed actions on record across
6 court cases:
CA10077, 14CW3016, 01CW0182, 00CW0110, W7439, CA9079.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA10077 | 1 | 1939-11-14 | S |
14CW3016 | 14 | 1939-11-14 | S |
01CW0182 | 12 | 1939-11-14 | S |
00CW0110 | 14 | 1939-11-14 | S |
W7439 | 10 | 1931-04-01 | S |
CA9079 | 6 | 1931-04-01 | 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 3,394 AF. Its most recent year on record, 2024, came in at 2,324 AF — 68% of that, and 4th 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) |
|---|---|---|---|---|---|
| 2008 | 1,464 | 2nd lowest of 15 · 43% of median | — | 36 | 63.0 |
| 2009 | 4,550 | 11th lowest of 15 · 134% of median | — | 38 | 132.0 |
| 2010 | 2,180 | 3rd lowest of 15 · 64% of median | — | 53 | 125.0 |
| 2011 | 6,979 | 14th lowest of 15 · 206% of median | — | 45 | 161.0 |
| 2013 | 4,142 | 9th lowest of 15 · 122% of median | — | 38 | 90.0 |
| 2014 | 2,353 | 5th lowest of 15 · 69% of median | — | 28 | 150.0 |
| 2016 | 3,394 | 8th lowest of 15 · 100% of median | — | 20 | 157.0 |
| 2017 | 8,753 | 15th lowest of 15 · 258% of median | 112 | 93 | 157.7 |
| 2018 | 5,507 | 12th lowest of 15 · 162% of median | 717 | 66 | 184.9 |
| 2019 | 4,293 | 10th lowest of 15 · 126% of median | 7,926 | 83 | 160.7 |
| 2020 | 1,161 | 1st lowest of 15 · 34% of median | 3,992 | 15 | 110.7 |
| 2021 | 5,561 | 13th lowest of 15 · 164% of median | 8,832 | 95 | 149.7 |
| 2022 | 3,042 | 7th lowest of 15 · 90% of median | 7,764 | 85 | 144.7 |
| 2023 | 2,979 | 6th lowest of 15 · 88% of median | 1,161 | 70 | 139.3 |
| 2024 | 2,324 | 4th lowest of 15 · 68% of median | 3,193 | 89 | 81.1 |
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 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 | 6 right(s), seniority decoded |
| diversion record | present | 1050 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 16% of the irrigation seasons in 1994-2024 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.