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JAMISON DITCH
Structure dossier · WDID 1500542 · 1 · GREENHORN CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 23:54 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 — 8th 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: HICKLIN DITCH "B" (1859-05-01). Immediately behind: COLD SPRING COLL GALLERY (1859-05-01).
Decreed rights (11)
| 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 | 0.9329 | 0.0 | C | IRR | 38 |
| 7761.0 | 1871-04-01 | 1893-06-26 | 0.0 | 0.0 | C | MUN | 57 |
| 8035.0 | 1871-12-31 | 1893-06-26 | 1.0263 | 0.0 | C | IRR | 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 | 0.0 | 0.0 | C | MUN | 106 |
| 11688.0 | 1881-12-31 | 1893-06-26 | 0.0 | 0.0 | C | MUN | 139 |
| 13514.0 | 1886-12-31 | 1893-06-26 | 0.0 | 0.0 | C | MUN | 169, 173.5 |
Legal record & documents
15 decreed actions on record across
4 court cases:
W4602, CA54865, CA2756, 80CW0044.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
W4602 | 2 | 1893-06-26 | O |
CA54865 | 1 | 1893-06-26 | O |
CA2756 | 2 | 1893-06-26 | O |
80CW0044 | 10 | 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 20 AF. Its most recent year on record, 2025, came in at 0 AF — 0% of that, and 1st 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 | 2 | 0.0 |
| 2010 | 186 | 15th lowest of 15 · 930% of median | 132 | 1.7 |
| 2011 | 25 | 9th lowest of 15 · 125% of median | 22 | 0.8 |
| 2012 | 65 | 12th lowest of 15 · 325% of median | 51 | 0.7 |
| 2013 | 11 | 7th lowest of 15 · 55% of median | 11 | 0.8 |
| 2014 | 20 | 8th lowest of 15 · 100% of median | 30 | 0.6 |
| 2015 | 113 | 14th lowest of 15 · 565% of median | 109 | 0.8 |
| 2016 | 92 | 13th lowest of 15 · 460% of median | 141 | 0.8 |
| 2017 | 42 | 10th lowest of 15 · 210% of median | 35 | 1.9 |
| 2018 | 0 | 1st lowest of 15 · 0% of median | 13 | 0.0 |
| 2021 | 0 | 1st lowest of 15 · 0% of median | 6 | 0.0 |
| 2022 | 0 | 1st lowest of 15 · 0% of median | 4 | 0.0 |
| 2023 | 0 | 1st lowest of 15 · 0% of median | 6 | 0.0 |
| 2024 | 63 | 11th lowest of 15 · 315% of median | 46 | 1.1 |
| 2025 | 0 | 1st lowest of 15 · 0% of median | 6 | 0.0 |
Trends for this structure
Recorded use shows no clear trend over its last 15 recorded years — which is itself worth knowing.
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 | 11 right(s), seniority decoded |
| diversion record | present | 8738 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 36% 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.