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DERCUM DITCH
Structure dossier · WDID 3600588 · 1 · SNAKE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-28 01:22 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 1914-08-01 — 358th most senior of the 1247 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: MILL CREEK DIVERSION NO 1 (1914-08-01). Immediately behind: TIEZE WELL NO 1 (1914-08-01).
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 |
|---|---|---|---|---|---|---|---|
| 32075.23588 | 1914-08-01 | 1952-03-10 | 2.94 | 0.0 | C | IRRAUG | 317 |
Legal record & documents
9 decreed actions on record across
6 court cases:
W3885, W3875, W2932, CA1805, 81CW0149, 03CW0166.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
W3885 | 2 | 1952-03-10 | S |
W3875 | 2 | 1952-03-10 | S |
W2932 | 2 | 1952-03-10 | S |
CA1805 | 1 | 1952-03-10 | S |
81CW0149 | 1 | 1952-03-10 | S |
03CW0166 | 1 | 1952-03-10 | 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 365 AF. Its most recent year on record, 1989, 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) |
|---|---|---|---|---|
| 1973 | 515 | 13th lowest of 15 · 141% of median | 145 | 3.6 |
| 1975 | 407 | 10th lowest of 15 · 112% of median | 171 | 1.2 |
| 1976 | 893 | 15th lowest of 15 · 245% of median | 150 | 3.5 |
| 1977 | 184 | 5th lowest of 15 · 50% of median | 94 | 1.0 |
| 1978 | 393 | 9th lowest of 15 · 108% of median | 153 | 1.5 |
| 1979 | 331 | 7th lowest of 15 · 91% of median | 139 | 2.0 |
| 1980 | 637 | 14th lowest of 15 · 174% of median | 153 | 3.0 |
| 1981 | 419 | 11th lowest of 15 · 115% of median | 170 | 1.5 |
| 1983 | 365 | 8th lowest of 15 · 100% of median | 123 | 2.5 |
| 1984 | 462 | 12th lowest of 15 · 127% of median | 98 | 2.4 |
| 1985 | 0 | 1st lowest of 15 · 0% of median | 1 | 0.0 |
| 1986 | 83 | 4th lowest of 15 · 23% of median | 43 | 1.0 |
| 1987 | 307 | 6th lowest of 15 · 84% of median | 118 | 2.3 |
| 1988 | 12 | 3rd lowest of 15 · 3% of median | 17 | 0.5 |
| 1989 | 0 | 1st lowest of 15 · 0% of median | 5 | 0.0 |
Trends for this structure
Recorded use is falling over its last 15 recorded years (-32 AF/yr, Mann-Kendall p=0.012).
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 | 1 right(s), seniority decoded |
| diversion record | present | 2808 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | patchy | 54% of the irrigation seasons in 1965-1989 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.