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ISLAND DITCH
Structure dossier · WDID 4300713 · 1 · WHITE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 21:01 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.
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 1938-05-15 — 1109th most senior of the 3293 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: FULTON IRR & FEEDER D (1933-05-15). Immediately behind: AL WHITE DOM WTR PL (1939-07-01).
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 |
|---|---|---|---|---|---|---|---|
| 35679.32276 | 1938-05-15 | 1958-11-26 | 2.0 | 0.0 | C | IRR | 531 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 48 AF. Its most recent year on record, 2025, came in at 40 AF — 83% of that, and 7th 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) |
|---|---|---|---|---|
| 2009 | 32 | 5th lowest of 15 · 67% of median | 14 | 2.0 |
| 2010 | 80 | 11th lowest of 15 · 167% of median | 25 | 3.5 |
| 2011 | 889 | 15th lowest of 15 · 1852% of median | 55 | 12.0 |
| 2012 | 56 | 9th lowest of 15 · 117% of median | 21 | 2.0 |
| 2013 | 0 | 1st lowest of 15 · 0% of median | 10 | 0.0 |
| 2014 | 0 | 1st lowest of 15 · 0% of median | 5 | 0.0 |
| 2016 | 57 | 10th lowest of 15 · 119% of median | 23 | 1.5 |
| 2017 | 48 | 8th lowest of 15 · 100% of median | 19 | 1.8 |
| 2018 | 169 | 14th lowest of 15 · 352% of median | 63 | 2.2 |
| 2020 | 39 | 6th lowest of 15 · 81% of median | 26 | 1.4 |
| 2021 | 99 | 12th lowest of 15 · 206% of median | 23 | 2.6 |
| 2022 | 28 | 4th lowest of 15 · 58% of median | 17 | 1.0 |
| 2023 | 162 | 13th lowest of 15 · 338% of median | 96 | 2.0 |
| 2024 | 20 | 3rd lowest of 15 · 42% of median | 7 | 2.0 |
| 2025 | 40 | 7th lowest of 15 · 83% of median | 12 | 2.0 |
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.