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MCDONALD CUDDIGAN DITCH
Structure dossier · WDID 6800655 · 1 · UNCOMPAHGRE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-28 03:36 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 1876-05-10 — 5th most senior of the 1293 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: MORRISON DITCH (1876-05-05). Immediately behind: CHARLEY LOGAN DITCH (1876-06-01).
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 |
|---|---|---|---|---|---|---|---|
| 9627.0 | 1876-05-10 | 1897-05-15 | 0.62 | 0.0 | C | IRRAUG | 6 |
| 29554.09658 | 1876-06-10 | 1942-05-11 | 2.375 | 0.0 | C | IRR | 4 |
Legal record & documents
4 decreed actions on record across
3 court cases:
CA1959, CA0939, 19CW3034.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA1959 | 1 | 1942-05-11 | S |
CA0939 | 1 | 1897-05-15 | O |
19CW3034 | 2 | 1897-05-15 | 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 1,007 AF. Its most recent year on record, 2025, came in at 1,549 AF — 154% of that, and 11th 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 | 789 | 5th lowest of 15 · 78% of median | 50 | 8.1 |
| 2012 | 193 | 1st lowest of 15 · 19% of median | 113 | 5.8 |
| 2013 | 1,219 | 10th lowest of 15 · 121% of median | 53 | 16.6 |
| 2014 | 2,112 | 13th lowest of 15 · 210% of median | 89 | 13.5 |
| 2015 | 748 | 3rd lowest of 15 · 74% of median | 64 | 9.4 |
| 2016 | 1,047 | 9th lowest of 15 · 104% of median | 115 | 7.4 |
| 2017 | 2,036 | 12th lowest of 15 · 202% of median | 106 | 14.5 |
| 2018 | 564 | 2nd lowest of 15 · 56% of median | 148 | 5.6 |
| 2019 | 2,264 | 14th lowest of 15 · 225% of median | 121 | 15.5 |
| 2020 | 952 | 7th lowest of 15 · 94% of median | 171 | 8.0 |
| 2021 | 911 | 6th lowest of 15 · 90% of median | 155 | 6.3 |
| 2022 | 1,007 | 8th lowest of 15 · 100% of median | 163 | 13.2 |
| 2023 | 2,516 | 15th lowest of 15 · 250% of median | 195 | 20.8 |
| 2024 | 766 | 4th lowest of 15 · 76% of median | 105 | 9.3 |
| 2025 | 1,549 | 11th lowest of 15 · 154% of median | 167 | 9.2 |
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 | 4600 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 28% of the irrigation seasons in 1950-2025 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.