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ALTEN DITCH
Structure dossier · WDID 4000505 · 1 · ALUM GULCH · DWR record
Where this page's figures come from
Generated 2026-08-27 20:47 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.
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 1895-04-01 — 1388th most senior of the 4661 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: COMBINATION DITCH (1894-04-01). Immediately behind: MILLER WASTE DITCH (1895-04-01).
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 |
|---|---|---|---|---|---|---|---|
| 25807.16527 | 1895-04-01 | 1930-02-10 | 0.125 | 0.0 | C | IRR | G20 |
| 25807.20544 | 1906-04-01 | 1930-02-10 | 0.175 | 0.0 | C | IRR | G44 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 106 AF. Its most recent year on record, 2024, came in at 107 AF — 101% of that, and 9th 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 | 109 | 10th lowest of 15 · 103% of median | 136 | 0.9 |
| 2011 | 256 | 15th lowest of 15 · 242% of median | 152 | 1.2 |
| 2012 | 106 | 8th lowest of 15 · 100% of median | 179 | 0.6 |
| 2013 | 122 | 12th lowest of 15 · 115% of median | 186 | 1.2 |
| 2014 | 111 | 11th lowest of 15 · 105% of median | 167 | 1.1 |
| 2015 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 2016 | 47 | 3rd lowest of 15 · 44% of median | 169 | 0.3 |
| 2017 | 90 | 6th lowest of 15 · 85% of median | 191 | 0.4 |
| 2018 | 27 | 2nd lowest of 15 · 26% of median | 193 | 0.1 |
| 2019 | 89 | 5th lowest of 15 · 84% of median | 167 | 0.4 |
| 2020 | 63 | 4th lowest of 15 · 59% of median | 152 | 0.5 |
| 2021 | 105 | 7th lowest of 15 · 99% of median | 169 | 0.5 |
| 2022 | 142 | 13th lowest of 15 · 134% of median | 175 | 1.0 |
| 2023 | 146 | 14th lowest of 15 · 138% of median | 164 | 1.0 |
| 2024 | 107 | 9th lowest of 15 · 101% of median | 165 | 0.6 |
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.