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O'REGAN NO 2 DITCH
Structure dossier · WDID 2800664 · 1 · QUARTZ CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 21:17 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 1897-06-01 — 179th 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: RAUSIS DITCH (1897-05-01). Immediately behind: O'REGAN NO 1 DITCH (1897-06-01).
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 |
|---|---|---|---|---|---|---|---|
| 17319.0 | 1897-06-01 | 1904-04-29 | 0.9 | 0.0 | C | IRR | 121 |
| 18740.0 | 1901-04-23 | 1904-04-29 | 0.0 | 0.0 | C | IRR | 127 |
| 28311.17319 | 1897-06-01 | 1943-04-19 | 3.6 | 0.0 | C | IRR | 272 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 709 AF. Its most recent year on record, 2025, came in at 1,264 AF — 178% of that, and 13th 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 | 626 | 7th lowest of 15 · 88% of median | 117 | 4.6 |
| 2012 | 286 | 1st lowest of 15 · 40% of median | 107 | 3.0 |
| 2013 | 318 | 2nd lowest of 15 · 45% of median | 85 | 2.9 |
| 2014 | 709 | 8th lowest of 15 · 100% of median | 48 | 9.3 |
| 2015 | 833 | 10th lowest of 15 · 118% of median | 56 | 12.0 |
| 2016 | 1,408 | 14th lowest of 15 · 199% of median | 135 | 9.3 |
| 2017 | 554 | 5th lowest of 15 · 78% of median | 54 | 6.8 |
| 2018 | 961 | 12th lowest of 15 · 136% of median | 150 | 5.0 |
| 2019 | 729 | 9th lowest of 15 · 103% of median | 89 | 7.0 |
| 2020 | 1,638 | 15th lowest of 15 · 231% of median | 152 | 8.0 |
| 2021 | 372 | 3rd lowest of 15 · 52% of median | 59 | 4.8 |
| 2022 | 839 | 11th lowest of 15 · 118% of median | 148 | 6.1 |
| 2023 | 482 | 4th lowest of 15 · 68% of median | 57 | 5.9 |
| 2024 | 563 | 6th lowest of 15 · 79% of median | 75 | 7.0 |
| 2025 | 1,264 | 13th lowest of 15 · 178% of median | 154 | 5.9 |
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.