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ROCK CREEK DITCH
Structure dossier · WDID 2800887 · 1 · ROCK CREEK · DWR record
Where this page's figures come from
Generated 2026-08-28 01:25 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 1911-06-10 — 765th most senior of the 1505 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 (1910-05-15). Immediately behind: ERNEST VOUGA DITCH (1918-06-12).
Decreed rights (1)
| 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 |
|---|---|---|---|---|---|---|---|
| 35168.2244 | 1911-06-10 | 1956-04-16 | 15.0 | 0.0 | C | IRR | 342 |
Legal record & documents
3 decreed actions on record across
2 court cases:
CA5266, 17CW0048.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA5266 | 1 | 1956-04-16 | S |
17CW0048 | 2 | 1956-04-16 | 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 11 years on record)
In a median year this structure has a recorded diversion of 510 AF. Its most recent year on record, 2019, came in at 342 AF — 67% of that, and 3rd lowest of the 11 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) |
|---|---|---|---|---|
| 1973 | 493 | 5th lowest of 11 · 97% of median | 72 | 3.5 |
| 1974 | 849 | 10th lowest of 11 · 166% of median | 98 | 8.0 |
| 1989 | 510 | 6th lowest of 11 · 100% of median | 177 | 2.0 |
| 1990 | 684 | 8th lowest of 11 · 134% of median | 191 | 2.5 |
| 1991 | 793 | 9th lowest of 11 · 156% of median | 178 | 3.0 |
| 1992 | 994 | 11th lowest of 11 · 195% of median | 144 | 6.0 |
| 1993 | 611 | 7th lowest of 11 · 120% of median | 173 | 3.5 |
| 1994 | 251 | 1st lowest of 11 · 49% of median | 144 | 2.7 |
| 2015 | 337 | 2nd lowest of 11 · 66% of median | 86 | 2.0 |
| 2017 | 424 | 4th lowest of 11 · 83% of median | 94 | 3.0 |
| 2019 | 342 | 3rd lowest of 11 · 67% of median | 56 | 5.4 |
Trends for this structure
Recorded use shows no clear trend over its last 11 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 | 1 right(s), seniority decoded |
| diversion record | present | 1413 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 14% of the irrigation seasons in 1973-2019 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.