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UNION DITCH
Structure dossier · WDID 0100688 · 1 · SOUTH PLATTE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 21:02 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
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 1901-02-16 — 360th most senior of the 7705 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: WEINMEISTER WELL 1 (1900-12-31). Immediately behind: CRISWELL WELL 1-04013-F (1901-03-01).
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 |
|---|---|---|---|---|---|---|---|
| 18674.0 | 1901-02-16 | 1914-01-15 | 34.7 | 0.0 | C | IRR | |
| 59900.5911 | 2011-11-02 | 2014-12-31 | 26.0 | 0.0 | C | RECWLD |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 4,842 AF. Its most recent year on record, 2024, came in at 3,344 AF — 69% of that, and 5th 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) |
|---|---|---|---|---|
| 2010 | 7,643 | 14th lowest of 15 · 158% of median | 179 | 35.2 |
| 2011 | 6,870 | 13th lowest of 15 · 142% of median | 126 | 38.4 |
| 2012 | 5,097 | 10th lowest of 15 · 105% of median | 97 | 35.6 |
| 2013 | 2,764 | 2nd lowest of 15 · 57% of median | 67 | 35.1 |
| 2014 | 10,811 | 15th lowest of 15 · 223% of median | 174 | 39.5 |
| 2015 | 4,952 | 9th lowest of 15 · 102% of median | 114 | 38.1 |
| 2016 | 5,190 | 12th lowest of 15 · 107% of median | 161 | 45.2 |
| 2017 | 2,801 | 3rd lowest of 15 · 58% of median | 46 | 38.7 |
| 2018 | 3,619 | 7th lowest of 15 · 75% of median | 56 | 36.1 |
| 2019 | 4,842 | 8th lowest of 15 · 100% of median | 86 | 37.3 |
| 2020 | 3,496 | 6th lowest of 15 · 72% of median | 54 | 36.1 |
| 2021 | 2,387 | 1st lowest of 15 · 49% of median | 44 | 34.9 |
| 2022 | 3,280 | 4th lowest of 15 · 68% of median | 55 | 35.3 |
| 2023 | 5,182 | 11th lowest of 15 · 107% of median | 142 | 35.9 |
| 2024 | 3,344 | 5th lowest of 15 · 69% of median | 305 | 35.8 |
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.