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ALLEN MESA DITCH
Structure dossier · WDID 4000914 · 1 · LEROUX CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 19:53 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 in line
Priority 1887-04-29 — 156th 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: HORSESHOE DITCH (1887-04-11). Immediately behind: CF&I WELL NO. 5 (1887-05-01).
Decreed rights (4)
| 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 |
|---|---|---|---|---|---|---|---|
| 13633.0 | 1887-04-29 | 1889-06-17 | 3.6 | 0.0 | C | IRR | 10 |
| 21089.14413 | 1889-06-17 | 1908-03-20 | 10.62 | 0.0 | C | IRR | 13 |
| 21089.19814 | 1904-04-01 | 1908-03-20 | 1.5 | 0.0 | C | IRR | 27 |
| 25807.21264 | 1908-03-21 | 1930-02-10 | 17.25 | 0.0 | C | IRR | G53 |
Recorded use (last 10 years on record)
In a median year this structure has a recorded diversion of 912 AF. Its most recent year on record, 1980, came in at 837 AF — 92% of that, and 5th lowest of the 10 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) |
|---|---|---|---|---|
| 1970 | 1,143 | 7th lowest of 10 · 125% of median | 53 | 15.0 |
| 1971 | 1,828 | 9th lowest of 10 · 200% of median | 81 | 14.0 |
| 1972 | 818 | 4th lowest of 10 · 90% of median | 51 | 13.0 |
| 1973 | 1,863 | 10th lowest of 10 · 204% of median | 75 | 15.0 |
| 1974 | 988 | 6th lowest of 10 · 108% of median | 51 | 12.7 |
| 1975 | 1,719 | 8th lowest of 10 · 188% of median | 77 | 14.0 |
| 1976 | 636 | 3rd lowest of 10 · 70% of median | 47 | 8.0 |
| 1978 | 339 | 2nd lowest of 10 · 37% of median | 32 | 7.0 |
| 1979 | 103 | 1st lowest of 10 · 11% of median | 15 | 5.0 |
| 1980 | 837 | 5th lowest of 10 · 92% of median | 92 | 6.0 |
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.