Hydrohistorian
← My Water · Print / save as PDF
DUNCAN DITCH NO 2
Structure dossier · WDID 5400520 · 1 · ROARING FORK SLATER CREE · DWR record
Where this page's figures come from
Generated 2026-08-27 23:23 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (a1c9146) — 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 1902-07-02 — 138th most senior of the 724 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: DUNCAN DITCH NO 1 (1902-07-02). Immediately behind: RODEWALD WELL NO 2 (1920-06-07).
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 |
|---|---|---|---|---|---|---|---|
| 25490.19175 | 1902-07-02 | 1920-06-25 | 5.0 | 0.0 | C | IRR | 29AAA, NON |
| 37433.29371 | 1930-06-01 | 1964-06-23 | 4.0 | 0.0 | C | IRRDOM | 16 |
Legal record & documents
3 decreed actions on record across
3 court cases:
CA1598, W0464-73, 91CW0083.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA1598 | 1 | 1964-06-23 | S |
W0464-73 | 1 | 1920-06-25 | S |
91CW0083 | 1 | 1920-06-25 | 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 386 AF. Its most recent year on record, 2025, came in at 0 AF — 0% of that, and 1st 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 | 386 | 8th lowest of 15 · 100% of median | 61 | 4.6 |
| 2012 | 394 | 9th lowest of 15 · 102% of median | 68 | 3.4 |
| 2013 | 557 | 10th lowest of 15 · 144% of median | 71 | 5.7 |
| 2014 | 580 | 11th lowest of 15 · 150% of median | 60 | 7.0 |
| 2015 | 1,230 | 13th lowest of 15 · 319% of median | 111 | 10.0 |
| 2016 | 345 | 7th lowest of 15 · 89% of median | 55 | 5.1 |
| 2017 | 2,005 | 15th lowest of 15 · 519% of median | 125 | 9.8 |
| 2018 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 2019 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 2020 | 52 | 5th lowest of 15 · 14% of median | 12 | 2.4 |
| 2021 | 139 | 6th lowest of 15 · 36% of median | 21 | 3.7 |
| 2022 | 678 | 12th lowest of 15 · 176% of median | 56 | 7.9 |
| 2023 | 1,936 | 14th lowest of 15 · 502% of median | 123 | 8.0 |
| 2024 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 2025 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
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 (8/10 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 | 6079 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | patchy | 44% of the irrigation seasons in 1960-2025 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.