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ERWIN IRRIGATION DITCH
Structure dossier · WDID 5700535 · 1 · YAMPA RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 21:13 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 1895-10-01 — 80th most senior of the 1003 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: WHETSTONE RESERVOIR (1903-05-06). Immediately behind: ERWIN IRR D BURRELL TRAN (1895-10-01).
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 |
|---|---|---|---|---|---|---|---|
| 20350.1671 | 1895-10-01 | 1905-09-26 | 4.014 | 0.0 | C | IRR | A-63 |
| 34139.20319 | 1905-08-19 | 1948-07-12 | 1.84 | 0.0 | C | IRR | 185 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 202 AF. Its most recent year on record, 2020, came in at 0 AF — 0% of that, and 1st 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) |
|---|---|---|---|---|
| 2001 | 317 | 15th lowest of 15 · 157% of median | 42 | 5.0 |
| 2002 | 224 | 9th lowest of 15 · 111% of median | 38 | 5.0 |
| 2003 | 255 | 12th lowest of 15 · 126% of median | 35 | 5.0 |
| 2004 | 286 | 14th lowest of 15 · 142% of median | 75 | 3.5 |
| 2005 | 202 | 8th lowest of 15 · 100% of median | 35 | 3.0 |
| 2006 | 145 | 7th lowest of 15 · 72% of median | 22 | 4.0 |
| 2007 | 254 | 11th lowest of 15 · 126% of median | 34 | 5.0 |
| 2008 | 248 | 10th lowest of 15 · 123% of median | 43 | 3.5 |
| 2009 | 116 | 6th lowest of 15 · 57% of median | 46 | 2.3 |
| 2010 | 278 | 13th lowest of 15 · 138% of median | 42 | 5.0 |
| 2016 | 0 | 1st lowest of 15 · 0% of median | 6 | 0.0 |
| 2017 | 0 | 1st lowest of 15 · 0% of median | 5 | 0.0 |
| 2018 | 0 | 1st lowest of 15 · 0% of median | 3 | 0.0 |
| 2019 | 0 | 1st lowest of 15 · 0% of median | 5 | 0.0 |
| 2020 | 0 | 1st lowest of 15 · 0% of median | 4 | 0.0 |
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.