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GALLAGHER DITCH
Structure dossier · WDID 4000708 · 1 · DIRTY GEORGE CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 19:17 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 in line
Priority 1886-03-01 — 1081st most senior of the 4661 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: CARBONATE CAMP DITCH (1885-10-31). Immediately behind: WEIR AND JOHNSON DITCH (1886-03-15).
Decreed rights (2)
| 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 |
|---|---|---|---|---|---|---|---|
| 20501.13209 | 1886-03-01 | 1907-09-28 | 0.37 | 0.0 | C | IRR | 20 |
| 21654.0 | 1909-04-15 | 1914-06-23 | 0.5 | 0.0 | C | IRR | A105 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 136 AF. Its most recent year on record, 2023, came in at 443 AF — 326% 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) |
|---|---|---|---|---|
| 2008 | 506 | 14th lowest of 15 · 372% of median | 185 | 1.5 |
| 2009 | 227 | 9th lowest of 15 · 167% of median | 86 | 1.5 |
| 2010 | 16 | 5th lowest of 15 · 12% of median | 10 | 0.9 |
| 2011 | 596 | 15th lowest of 15 · 438% of median | 190 | 1.6 |
| 2012 | 136 | 8th lowest of 15 · 100% of median | 146 | 0.9 |
| 2013 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 2014 | 303 | 11th lowest of 15 · 223% of median | 170 | 1.2 |
| 2015 | 3 | 2nd lowest of 15 · 2% of median | 4 | 1.0 |
| 2016 | 308 | 12th lowest of 15 · 226% of median | 201 | 1.5 |
| 2017 | 292 | 10th lowest of 15 · 215% of median | 127 | 2.0 |
| 2018 | 29 | 6th lowest of 15 · 21% of median | 42 | 0.4 |
| 2020 | 5 | 3rd lowest of 15 · 4% of median | 9 | 0.4 |
| 2021 | 37 | 7th lowest of 15 · 27% of median | 53 | 0.4 |
| 2022 | 5 | 3rd lowest of 15 · 4% of median | 9 | 0.4 |
| 2023 | 443 | 13th lowest of 15 · 326% of median | 149 | 1.5 |
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.