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GUNNISON AND TOMICHI VALLEY DITCH ASSOCI
Structure dossier · WDID 5900571 · 1 · GUNNISON RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 23:49 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 1879-02-06 — 20th most senior of the 2360 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: PIONEER DITCH (1878-06-01). Immediately behind: KELMEL OWENS NO 1 DITCH (1879-06-01).
Decreed rights (8)
| 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 |
|---|---|---|---|---|---|---|---|
| 10629.0 | 1879-02-06 | 1906-09-14 | 14.0 | 0.0 | C | IRRMUNCOMINDRECFISAUGWLD | 11 |
| 14397.0 | 1889-06-01 | 1906-09-14 | 1.75 | 0.0 | C | IRRMUNCOMINDRECFISAUGWLD | 76 |
| 15493.0 | 1892-06-01 | 1906-09-14 | 1.375 | 0.0 | C | IRRMUNCOMINDRECFISAUGWLD | 94 |
| 20710.20574 | 1906-05-01 | 1921-10-25 | 2.0 | 0.0 | C | IRR | 198 |
| 30667.10629 | 1879-02-06 | 1941-04-29 | 37.0 | 0.0 | C | IRRMUNCOMINDRECFISAUGWLD | 283 |
| 38284.0 | 1954-10-26 | 1957-06-20 | 5.0 | 30.0 | C | IRR | 571 |
| 41052.0 | 1962-05-25 | 1965-10-28 | 0.0 | 5.0 | C | IRR | 637 |
| 57109.0 | 2006-05-11 | 2006-12-31 | 0.0 | 2.5 | C | RECFISWLD |
Legal record & documents
22 decreed actions on record across
9 court cases:
06CW0123, CA5782, 94CW0172, 13CW3051, 05CW0074, CA2021, 83CW0127, CA1635, CA1325.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
06CW0123 | 9 | 2006-12-31 | O, S |
CA5782 | 1 | 1965-10-28 | S |
94CW0172 | 1 | 1957-06-20 | S |
13CW3051 | 1 | 1957-06-20 | S |
05CW0074 | 1 | 1957-06-20 | S |
CA2021 | 1 | 1941-04-29 | S |
83CW0127 | 4 | 1941-04-29 | O, S |
CA1635 | 1 | 1921-10-25 | S |
CA1325 | 3 | 1906-09-14 | O |
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 7,535 AF. Its most recent year on record, 2025, came in at 7,124 AF — 94% of that, and 5th lowest of the 15 years with a recorded volume.
| 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 | Days recorded | Peak (cfs) |
|---|---|---|---|---|
| 2011 | 7,792 | 9th lowest of 15 · 103% of median | 200 | 42.2 |
| 2012 | 13,259 | 15th lowest of 15 · 176% of median | 210 | 46.4 |
| 2013 | 9,560 | 14th lowest of 15 · 127% of median | 177 | 42.2 |
| 2014 | 7,535 | 8th lowest of 15 · 100% of median | 168 | 43.0 |
| 2015 | 6,145 | 2nd lowest of 15 · 82% of median | 213 | 30.3 |
| 2016 | 7,895 | 11th lowest of 15 · 105% of median | 209 | 43.9 |
| 2017 | 7,298 | 6th lowest of 15 · 97% of median | 197 | 43.9 |
| 2018 | 8,446 | 12th lowest of 15 · 112% of median | 206 | 43.8 |
| 2019 | 6,760 | 4th lowest of 15 · 90% of median | 140 | 42.2 |
| 2020 | 7,396 | 7th lowest of 15 · 98% of median | 226 | 36.1 |
| 2021 | 7,829 | 10th lowest of 15 · 104% of median | 247 | 40.5 |
| 2022 | 8,675 | 13th lowest of 15 · 115% of median | 196 | 43.7 |
| 2023 | 6,541 | 3rd lowest of 15 · 87% of median | 140 | 40.1 |
| 2024 | 5,867 | 1st lowest of 15 · 78% of median | 137 | 30.3 |
| 2025 | 7,124 | 5th lowest of 15 · 94% of median | 201 | 37.7 |
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 | 8 right(s), seniority decoded |
| diversion record | present | 9226 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | continuous | 85% of the irrigation seasons in 1975-2025 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.