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LITTLE DORA DITCH
Structure dossier · WDID 4700727 · 1 · EAST BRANCH WILLOW CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 20:32 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 get called out?
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 1897-05-01 — 530th most senior of the 1262 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: BOCK DITCH (1896-06-01). Immediately behind: AKERS DITCH (1897-05-01).
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 |
|---|---|---|---|---|---|---|---|
| 30280.17288 | 1897-05-01 | 1939-06-20 | 10.0 | 0.0 | C | IRR | 683 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 479 AF. Its most recent year on record, 2025, came in at 32 AF — 7% 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) |
|---|---|---|---|---|
| 2007 | 479 | 8th lowest of 15 · 100% of median | 52 | 5.8 |
| 2008 | 298 | 6th lowest of 15 · 62% of median | 50 | 5.1 |
| 2009 | 211 | 5th lowest of 15 · 44% of median | 37 | 4.0 |
| 2010 | 875 | 12th lowest of 15 · 183% of median | 58 | 13.6 |
| 2013 | 1,385 | 15th lowest of 15 · 289% of median | 40 | 23.0 |
| 2014 | 691 | 10th lowest of 15 · 144% of median | 42 | 10.6 |
| 2015 | 1,128 | 14th lowest of 15 · 236% of median | 61 | 11.2 |
| 2016 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 2019 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 2020 | 369 | 7th lowest of 15 · 77% of median | 62 | 3.0 |
| 2021 | 0 | 1st lowest of 15 · 0% of median | 2 | 0.0 |
| 2022 | 850 | 11th lowest of 15 · 178% of median | 54 | 16.0 |
| 2023 | 1,118 | 13th lowest of 15 · 233% of median | 47 | 14.5 |
| 2024 | 592 | 9th lowest of 15 · 124% of median | 36 | 8.5 |
| 2025 | 32 | 4th lowest of 15 · 7% of median | 8 | 4.5 |
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.