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COZENS DITCH
Structure dossier · WDID 5100592 · 1 · VASQUEZ CREEK · DWR record
Where this page's figures come from
Generated 2026-08-28 02:55 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 1888-10-31 — 71st 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: PEAVEY NO 2 DITCH (1888-06-25). Immediately behind: COZENS DITCH AP WEST (1888-10-31).
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 |
|---|---|---|---|---|---|---|---|
| 14184.0 | 1888-10-31 | 1906-08-11 | 3.125 | 0.0 | C | IRRMUNDOMAUG | 66 |
| 54778.0 | 1999-12-23 | 1999-12-31 | 1.76 | 1.34 | C | IRRCOMINDFIRDOMSTKOTH |
Legal record & documents
5 decreed actions on record across
4 court cases:
99CW0314, 18CW3144, CA0112, 86CW0258.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
99CW0314 | 1 | 1999-12-31 | S |
18CW3144 | 1 | 1999-12-31 | S |
CA0112 | 1 | 1906-08-11 | O |
86CW0258 | 2 | 1906-08-11 | 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 187 AF. Its most recent year on record, 2024, came in at 447 AF — 239% of that, and 12th 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) |
|---|---|---|---|---|
| 2010 | 180 | 7th lowest of 15 · 96% of median | 56 | 2.0 |
| 2011 | 147 | 2nd lowest of 15 · 79% of median | 65 | 1.5 |
| 2012 | 488 | 13th lowest of 15 · 261% of median | 168 | 3.0 |
| 2013 | 187 | 8th lowest of 15 · 100% of median | 115 | 3.0 |
| 2014 | 390 | 11th lowest of 15 · 209% of median | 92 | 4.5 |
| 2015 | 152 | 3rd lowest of 15 · 81% of median | 75 | 3.0 |
| 2016 | 154 | 4th lowest of 15 · 82% of median | 46 | 4.0 |
| 2017 | 289 | 10th lowest of 15 · 154% of median | 56 | 4.2 |
| 2018 | 163 | 5th lowest of 15 · 87% of median | 50 | 3.1 |
| 2019 | 65 | 1st lowest of 15 · 35% of median | 38 | 5.0 |
| 2020 | 1,494 | 15th lowest of 15 · 799% of median | 82 | 16.9 |
| 2021 | 277 | 9th lowest of 15 · 148% of median | 53 | 6.3 |
| 2022 | 167 | 6th lowest of 15 · 89% of median | 51 | 6.5 |
| 2023 | 557 | 14th lowest of 15 · 298% of median | 58 | 9.8 |
| 2024 | 447 | 12th lowest of 15 · 239% of median | 77 | 6.7 |
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 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 | 2 right(s), seniority decoded |
| diversion record | present | 2335 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 22% of the irrigation seasons in 1975-2024 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.