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GREENHORN VALLEY DITCH
Structure dossier · WDID 1500536 · 1 · GREENHORN CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 22:20 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 1859-05-01 — 3rd most senior of the 704 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: CUERNA VERDE ASSOCIATION (1859-05-01). Immediately behind: HAYDEN SUPPLY DITCH (1859-05-01).
Decreed rights (14)
| 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 |
|---|---|---|---|---|---|---|---|
| 3408.0 | 1859-05-01 | 1893-06-26 | 0.0 | 0.0 | C | MUN | 3 |
| 5599.0 | 1865-04-30 | 1893-06-26 | 0.0 | 0.0 | C | MUN | 15 |
| 5965.0 | 1866-05-01 | 1893-06-26 | 0.0 | 0.0 | C | MUN | 23 |
| 6666.0 | 1868-04-01 | 1893-06-26 | 0.0 | 0.0 | C | MUN | 38 |
| 7761.0 | 1871-04-01 | 1893-06-26 | 0.9 | 0.0 | C | IRR | 57 |
| 7792.0 | 1871-05-02 | 1893-06-26 | 0.0 | 0.0 | C | MUN | 60 |
| 8553.0 | 1873-06-01 | 1893-06-26 | 0.0 | 0.0 | C | MUN | 88 |
| 9496.0 | 1875-12-31 | 1893-06-26 | 0.0 | 0.0 | C | MUN | 99 |
| 9862.0 | 1876-12-31 | 1893-06-26 | 0.25 | 0.0 | C | IRR | 106 |
| 11688.0 | 1881-12-31 | 1893-06-26 | 1.0 | 0.0 | C | IRR | 139 |
| 12510.0 | 1884-04-01 | 1893-06-26 | 1.5 | 0.0 | C | STOIRR | 161 |
| 13514.0 | 1886-12-31 | 1893-06-26 | 0.0 | 0.0 | C | MUN | 169, 173.5 |
| 13879.0 | 1887-12-31 | 1893-06-26 | 0.2 | 0.0 | C | STOIRR | 178 |
| 14610.0 | 1889-12-31 | 1893-06-26 | 0.3 | 0.0 | C | STOIRR | 190 |
Legal record & documents
15 decreed actions on record across
2 court cases:
CA2756, 80CW0044.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA2756 | 6 | 1893-06-26 | O |
80CW0044 | 9 | 1893-06-26 | O |
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 15 years on record)
In a median year this structure has a recorded diversion of 9 AF. Its most recent year on record, 2025, came in at 216 AF — 2400% of that, and 12th 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) |
|---|---|---|---|---|
| 2009 | 0 | 1st lowest of 15 · 0% of median | 3 | 0.0 |
| 2010 | 0 | 1st lowest of 15 · 0% of median | 4 | 0.0 |
| 2011 | 0 | 1st lowest of 15 · 0% of median | 4 | 0.0 |
| 2013 | 9 | 8th lowest of 15 · 100% of median | 8 | 1.0 |
| 2014 | 39 | 9th lowest of 15 · 433% of median | 26 | 1.6 |
| 2015 | 0 | 1st lowest of 15 · 0% of median | 12 | 0.0 |
| 2017 | 0 | 1st lowest of 15 · 0% of median | 5 | 0.0 |
| 2018 | 67 | 10th lowest of 15 · 744% of median | 56 | 1.4 |
| 2019 | 217 | 13th lowest of 15 · 2411% of median | 99 | 1.9 |
| 2020 | 3 | 7th lowest of 15 · 33% of median | 7 | 0.5 |
| 2021 | 177 | 11th lowest of 15 · 1967% of median | 173 | 1.1 |
| 2022 | 2 | 6th lowest of 15 · 22% of median | 26 | 0.1 |
| 2023 | 225 | 14th lowest of 15 · 2500% of median | 63 | 3.2 |
| 2024 | 315 | 15th lowest of 15 · 3500% of median | 110 | 3.0 |
| 2025 | 216 | 12th lowest of 15 · 2400% of median | 70 | 2.1 |
Trends for this structure
Recorded use is rising over its last 15 recorded years (+14 AF/yr, Mann-Kendall p=0.003).
How good is our record of it?
Grade B (8/10 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 | 14 right(s), seniority decoded |
| diversion record | present | 10549 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | patchy | 43% of the irrigation seasons in 1911-2025 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.