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OURAY DITCH
Structure dossier · WDID 1100578 · 1 · SOUTH ARKANSAS RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 19:54 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 in line
Priority 1887-03-31 — 227th most senior of the 1489 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: MICHIGAN DITCH (1887-03-17). Immediately behind: HENDERSON & DELAPPE (1887-05-01).
Decreed rights (3)
| 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 |
|---|---|---|---|---|---|---|---|
| 13604.0 | 1887-03-31 | 1890-06-19 | 1.0 | 0.0 | C | IRR | 157 |
| 14396.0 | 1889-05-31 | 1890-06-19 | 3.2 | 0.0 | C | IRR | 178 |
| 14400.0 | 1889-06-04 | 1890-06-19 | 9.0 | 0.0 | C | IRR | 179 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 305 AF. Its most recent year on record, 2023, came in at 34 AF — 11% of that, and 4th 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) |
|---|---|---|---|---|
| 2008 | 401 | 9th lowest of 15 · 132% of median | 58 | 8.0 |
| 2009 | 621 | 14th lowest of 15 · 204% of median | 59 | 7.0 |
| 2010 | 305 | 8th lowest of 15 · 100% of median | 40 | 5.7 |
| 2011 | 572 | 10th lowest of 15 · 188% of median | 54 | 11.0 |
| 2012 | 0 | 1st lowest of 15 · 0% of median | 15 | 0.0 |
| 2013 | 56 | 5th lowest of 15 · 18% of median | 41 | 1.0 |
| 2014 | 611 | 13th lowest of 15 · 200% of median | 42 | 12.0 |
| 2015 | 258 | 6th lowest of 15 · 85% of median | 62 | 3.5 |
| 2016 | 585 | 12th lowest of 15 · 192% of median | 51 | 11.1 |
| 2017 | 959 | 15th lowest of 15 · 314% of median | 79 | 9.7 |
| 2018 | 0 | 1st lowest of 15 · 0% of median | 11 | 0.0 |
| 2019 | 574 | 11th lowest of 15 · 188% of median | 76 | 12.0 |
| 2020 | 0 | 1st lowest of 15 · 0% of median | 16 | 0.0 |
| 2021 | 298 | 7th lowest of 15 · 98% of median | 21 | 13.1 |
| 2023 | 34 | 4th lowest of 15 · 11% of median | 31 | 2.2 |
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.