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ALAMO DITCH
Structure dossier · WDID 7800502 · 1 · PIEDRA RIVER · DWR record
Where this page's figures come from
Generated 2026-08-28 03:52 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (f6d7fdc) — 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 1899-05-16 — 104th most senior of the 366 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: TISHNER PUMPSITE AP (1920-07-01). Immediately behind: MCWHIRTERS POND & PUMP (1899-05-16).
Decreed rights (1)
| 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 |
|---|---|---|---|---|---|---|---|
| 28645.18033 | 1899-05-16 | 1962-04-19 | 2.0 | 0.0 | C | IRRDOM | #229 |
Legal record & documents
2 decreed actions on record across
2 court cases:
CA0308, 84CW0108.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA0308 | 1 | 1962-04-19 | S |
84CW0108 | 1 | 1962-04-19 | S |
DWR's own records for this structure: net amounts · transactions & adjudication history · scanned decrees (search a case number there for the imaged document). On this site: the district's full legal picture →
Recorded use (last 12 years on record)
In a median year this structure has a recorded diversion of 79 AF. Its most recent year on record, 1982, came in at 22 AF — 28% of that, and 3rd lowest of the 12 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) |
|---|---|---|---|---|
| 1965 | 264 | 11th lowest of 12 · 334% of median | 61 | 2.5 |
| 1966 | 685 | 12th lowest of 12 · 867% of median | 139 | 6.1 |
| 1968 | 151 | 10th lowest of 12 · 191% of median | 95 | 1.9 |
| 1969 | 28 | 4th lowest of 12 · 35% of median | 15 | 1.8 |
| 1970 | 139 | 9th lowest of 12 · 176% of median | 81 | 1.8 |
| 1974 | 121 | 8th lowest of 12 · 153% of median | 70 | 1.2 |
| 1977 | 83 | 7th lowest of 12 · 105% of median | 45 | 1.0 |
| 1978 | 75 | 6th lowest of 12 · 95% of median | 72 | 1.0 |
| 1979 | 0 | 1st lowest of 12 · 0% of median | 32 | 0.0 |
| 1980 | 0 | 1st lowest of 12 · 0% of median | 36 | 0.0 |
| 1981 | 30 | 5th lowest of 12 · 38% of median | 55 | 1.0 |
| 1982 | 22 | 3rd lowest of 12 · 28% of median | 49 | 1.0 |
Trends for this structure
Recorded use is falling over its last 12 recorded years (-13 AF/yr, Mann-Kendall p=0.002).
How good is our record of it?
Grade B (7/10 points) — the components below are the finding; the letter alone is not.
The rubric, component by component
| Check | State | Detail |
|---|---|---|
| identity | complete | name, type, and water source all on file |
| decreed rights | on file | 1 right(s), seniority decoded |
| diversion record | present | 750 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 20% of the irrigation seasons in 1965-1982 carry measured days |
| published-record stability | stable | no upstream revisions recorded against this structure |
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.