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ONECO PUMP NO 2
Structure dossier · WDID 5500509 · 8 · LITTLE SNAKE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 20:47 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.
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 1890-05-01 — 5th 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: MAJORS PUMP NO 2 (1890-05-01). Immediately behind: MAJORS DITCH (1890-05-01).
Decreed rights (6)
| 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 |
|---|---|---|---|---|---|---|---|
| 14731.0 | 1890-05-01 | 1972-05-27 | 0.85 | 0.0 | C | IRR | 1 |
| 15080.0 | 1891-04-15 | 1972-05-27 | 1.75 | 0.0 | C | IRR | 2 |
| 18171.0 | 1899-10-01 | 1972-05-27 | 3.0 | 0.0 | C | IRR | 3 |
| 18746.0 | 1901-04-29 | 1972-05-27 | 3.58 | 0.0 | C | IRR | 5 |
| 19050.0 | 1902-02-27 | 1972-05-27 | 2.16 | 0.0 | C | IRR | 4 |
| 42155.0 | 1965-06-01 | 1972-05-27 | 4.0 | 0.0 | C | IRR | 16C |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 1,230 AF. Its most recent year on record, 2025, came in at 662 AF — 54% of that, and 2nd 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) |
|---|---|---|---|---|
| 2004 | 1,051 | 6th lowest of 15 · 85% of median | 60 | 10.0 |
| 2005 | 1,170 | 7th lowest of 15 · 95% of median | 61 | 10.0 |
| 2006 | 992 | 5th lowest of 15 · 81% of median | 55 | 10.0 |
| 2007 | 1,726 | 13th lowest of 15 · 140% of median | 92 | 10.0 |
| 2008 | 1,507 | 11th lowest of 15 · 122% of median | 82 | 10.0 |
| 2009 | 1,289 | 9th lowest of 15 · 105% of median | 71 | 10.0 |
| 2010 | 1,230 | 8th lowest of 15 · 100% of median | 68 | 10.0 |
| 2011 | 1,944 | 14th lowest of 15 · 158% of median | 102 | 10.0 |
| 2012 | 1,646 | 12th lowest of 15 · 134% of median | 88 | 10.0 |
| 2013 | 1,418 | 10th lowest of 15 · 115% of median | 74 | 10.0 |
| 2014 | 2,316 | 15th lowest of 15 · 188% of median | 146 | 15.0 |
| 2015 | 584 | 1st lowest of 15 · 48% of median | 60 | 5.3 |
| 2016 | 687 | 3rd lowest of 15 · 56% of median | 78 | 4.7 |
| 2020 | 797 | 4th lowest of 15 · 65% of median | 50 | 10.3 |
| 2025 | 662 | 2nd lowest of 15 · 54% of median | 44 | 8.9 |
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.