Hydrohistorian
← My Water · Print / save as PDF
HAMILTON DITCH
Structure dossier · WDID 3800728 · 1 · COLLINS CREEK · DWR record
Where this page's figures come from
Generated 2026-08-28 02:10 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 1907-12-15 — 433rd most senior of the 4788 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: CERISE DITCH (1907-12-15). Immediately behind: BIONAZ DITCH (1915-06-01).
Decreed rights (3)
| 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 |
|---|---|---|---|---|---|---|---|
| 27687.21167 | 1907-12-15 | 1925-10-27 | 0.0 | 0.0 | C | IRR | 241 |
| 27687.23819 | 1915-03-20 | 1925-10-27 | 0.0 | 0.0 | C | IRR | 242 |
| 36794.0 | 1950-09-27 | 1952-10-24 | 5.0 | 0.0 | C | IRRFISDOMOTH | 619 |
Legal record & documents
3 decreed actions on record across
2 court cases:
CA4033, 90CW0230.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA4033 | 1 | 1952-10-24 | S |
90CW0230 | 2 | 1925-10-27 | 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 15 years on record)
In a median year this structure has a recorded diversion of 363 AF. Its most recent year on record, 2003, came in at 42 AF — 12% of that, and 4th 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) |
|---|---|---|---|---|
| 1977 | 87 | 5th lowest of 15 · 24% of median | 74 | 0.6 |
| 1978 | 363 | 8th lowest of 15 · 100% of median | 62 | 3.0 |
| 1979 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 1980 | 1,349 | 15th lowest of 15 · 372% of median | 170 | 4.0 |
| 1981 | 484 | 11th lowest of 15 · 133% of median | 62 | 4.0 |
| 1982 | 413 | 10th lowest of 15 · 114% of median | 53 | 4.0 |
| 1983 | 785 | 13th lowest of 15 · 216% of median | 100 | 4.0 |
| 1984 | 865 | 14th lowest of 15 · 238% of median | 110 | 4.0 |
| 1985 | 571 | 12th lowest of 15 · 157% of median | 74 | 4.0 |
| 1986 | 363 | 8th lowest of 15 · 100% of median | 62 | 3.0 |
| 1989 | 0 | 1st lowest of 15 · 0% of median | 2 | 0.0 |
| 1990 | 31 | 3rd lowest of 15 · 8% of median | 21 | 1.0 |
| 1991 | 90 | 6th lowest of 15 · 25% of median | 38 | 1.8 |
| 1992 | 188 | 7th lowest of 15 · 52% of median | 83 | 1.5 |
| 2003 | 42 | 4th lowest of 15 · 12% of median | 13 | 1.8 |
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 | 3 right(s), seniority decoded |
| diversion record | present | 1060 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 18% of the irrigation seasons in 1975-2003 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.