Hydrohistorian
← My Water · Print / save as PDF
DUNN PUMP & PL AP1
Structure dossier · WDID 5500557 · 8 · LITTLE SNAKE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-28 05:24 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 1975-10-01 — 263rd most senior of the 477 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: DUNN PUMP & PL (1975-10-01). Immediately behind: SUMMER SPRING 1 (1981-09-14).
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 |
|---|---|---|---|---|---|---|---|
| 48577.45929 | 1975-10-01 | 1983-12-31 | 0.0 | 0.0 | C | IRRSTK |
Legal record & documents
1 decreed actions on record across
1 court case:
16CW0028.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
16CW0028 | 1 | 1983-12-31 | 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 7 years on record)
In a median year this structure has a recorded diversion of 5 AF. Its most recent year on record, 2025, came in at 218 AF — 4360% of that, and 7th lowest of the 7 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) |
|---|---|---|---|---|
| 2018 | 0 | 1st lowest of 7 · 0% of median | 8 | 0.0 |
| 2019 | 0 | 1st lowest of 7 · 0% of median | 4 | 0.0 |
| 2020 | 5 | 4th lowest of 7 · 100% of median | 7 | 2.5 |
| 2021 | 60 | 6th lowest of 7 · 1200% of median | 26 | 2.5 |
| 2022 | 50 | 5th lowest of 7 · 1000% of median | 21 | 2.1 |
| 2023 | 0 | 1st lowest of 7 · 0% of median | 1 | 0.0 |
| 2025 | 218 | 7th lowest of 7 · 4360% of median | 56 | 2.6 |
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 | fragment | 123 measured day(s) on file (under 180 -- a season, not a history) |
| record continuity | unknown | record too short to assess continuity (needs 2+ years of span and 180+ 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.