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PETERSON DITCH
Structure dossier · WDID 3700754 · 1 · EAGLE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 22:12 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 1946-05-06 — 444th most senior of the 2162 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: COOPER HILL SPRING (1944-12-13). Immediately behind: W YATES RESERVOIR (1949-12-02).
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 |
|---|---|---|---|---|---|---|---|
| 35189.0 | 1946-05-06 | 1956-02-07 | 1.0 | 0.0 | C | IRRMUNCOMIND | 505 |
Legal record & documents
3 decreed actions on record across
2 court cases:
CA1128, 81CW0195.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA1128 | 1 | 1956-02-07 | S |
81CW0195 | 2 | 1956-02-07 | 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 292 AF. Its most recent year on record, 1990, 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) |
|---|---|---|---|---|
| 1976 | 324 | 11th lowest of 15 · 111% of median | 147 | 1.6 |
| 1977 | 327 | 12th lowest of 15 · 112% of median | 165 | 1.0 |
| 1978 | 245 | 6th lowest of 15 · 84% of median | 141 | 1.0 |
| 1979 | 278 | 7th lowest of 15 · 95% of median | 141 | 1.0 |
| 1980 | 323 | 10th lowest of 15 · 111% of median | 164 | 1.0 |
| 1981 | 296 | 9th lowest of 15 · 101% of median | 150 | 1.0 |
| 1982 | 421 | 15th lowest of 15 · 144% of median | 158 | 1.8 |
| 1983 | 402 | 14th lowest of 15 · 138% of median | 152 | 1.6 |
| 1984 | 371 | 13th lowest of 15 · 127% of median | 176 | 1.1 |
| 1985 | 292 | 8th lowest of 15 · 100% of median | 129 | 1.5 |
| 1986 | 109 | 4th lowest of 15 · 37% of median | 58 | 1.0 |
| 1987 | 198 | 5th lowest of 15 · 68% of median | 105 | 1.0 |
| 1988 | 0 | 1st lowest of 15 · 0% of median | 14 | 0.0 |
| 1989 | 0 | 1st lowest of 15 · 0% of median | 10 | 0.0 |
| 1990 | 0 | 1st lowest of 15 · 0% of median | 13 | 0.0 |
Trends for this structure
Recorded use is falling over its last 15 recorded years (-24 AF/yr, Mann-Kendall p=0.019).
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 | 1 right(s), seniority decoded |
| diversion record | present | 2202 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 30% of the irrigation seasons in 1956-1990 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.