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PIONEER DITCH
Structure dossier · WDID 4700835 · 1 · ILLINOIS RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 21:24 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 1886-05-31 — 82nd 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: MICHIGAN HIGHLINE DITCH (1886-05-31). Immediately behind: SAINT FRANCES NO 1 D (1886-05-31).
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 |
|---|---|---|---|---|---|---|---|
| 13300.0 | 1886-05-31 | 1892-09-19 | 10.0 | 0.0 | C | IRR | 57(55) |
| 50403.32771 | 1939-09-22 | 1988-12-31 | 10.0 | 0.0 | C | IRR |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 657 AF. Its most recent year on record, 2025, 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) |
|---|---|---|---|---|
| 2008 | 1,239 | 14th lowest of 15 · 189% of median | 48 | 19.3 |
| 2009 | 924 | 10th lowest of 15 · 141% of median | 47 | 16.0 |
| 2010 | 1,006 | 11th lowest of 15 · 153% of median | 43 | 19.0 |
| 2011 | 1,214 | 13th lowest of 15 · 185% of median | 41 | 17.9 |
| 2012 | 887 | 9th lowest of 15 · 135% of median | 62 | 10.1 |
| 2013 | 657 | 8th lowest of 15 · 100% of median | 37 | 12.4 |
| 2014 | 545 | 7th lowest of 15 · 83% of median | 27 | 13.0 |
| 2015 | 1,077 | 12th lowest of 15 · 164% of median | 67 | 11.4 |
| 2016 | 431 | 4th lowest of 15 · 66% of median | 23 | 10.3 |
| 2018 | 508 | 5th lowest of 15 · 77% of median | 29 | 10.0 |
| 2019 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 2020 | 1,380 | 15th lowest of 15 · 210% of median | 81 | 9.9 |
| 2021 | 523 | 6th lowest of 15 · 80% of median | 37 | 11.6 |
| 2024 | 39 | 3rd lowest of 15 · 6% of median | 8 | 2.8 |
| 2025 | 0 | 1st lowest of 15 · 0% of median | 1 | 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.