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GRAHAM DITCH
Structure dossier · WDID 6700572 · 1 · ARKANSAS RIVER · DWR record
Where this page's figures come from
Generated 2026-08-28 05:26 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 1891-08-24 — 42nd most senior of the 2116 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: M R MCCAULEY IRRIGATING (1891-08-15). Immediately behind: XY RANCH WELL NO 1 (1891-08-24).
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 |
|---|---|---|---|---|---|---|---|
| 15211.0 | 1891-08-24 | 1895-07-01 | 61.0 | 0.0 | C | IRR | 17 |
Legal record & documents
1 decreed actions on record across
1 court case:
07/01/1895.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
07/01/1895 | 1 | 1895-07-01 | 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 948 AF. Its most recent year on record, 1964, 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) |
|---|---|---|---|---|
| 1949 | 1,121 | 10th lowest of 15 · 118% of median | 121 | 10.0 |
| 1950 | 506 | 4th lowest of 15 · 53% of median | 365 | 5.0 |
| 1951 | 1,626 | 13th lowest of 15 · 172% of median | 365 | 10.0 |
| 1952 | 1,111 | 9th lowest of 15 · 117% of median | 354 | 20.0 |
| 1953 | 744 | 7th lowest of 15 · 78% of median | 365 | 15.0 |
| 1954 | 357 | 3rd lowest of 15 · 38% of median | 365 | 15.0 |
| 1955 | 1,767 | 14th lowest of 15 · 186% of median | 365 | 12.0 |
| 1956 | 948 | 8th lowest of 15 · 100% of median | 366 | 10.0 |
| 1957 | 1,553 | 12th lowest of 15 · 164% of median | 331 | 11.0 |
| 1958 | 1,466 | 11th lowest of 15 · 155% of median | 364 | 10.0 |
| 1959 | 2,575 | 15th lowest of 15 · 272% of median | 334 | 18.0 |
| 1960 | 730 | 6th lowest of 15 · 77% of median | 305 | 15.0 |
| 1962 | 0 | 1st lowest of 15 · 0% of median | 4 | 0.0 |
| 1963 | 670 | 5th lowest of 15 · 71% of median | 224 | 20.0 |
| 1964 | 0 | 1st lowest of 15 · 0% of median | 20 | 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 A (9/10 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 | 4370 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | continuous | 100% of the irrigation seasons in 1946-1964 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.