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WALTER ROBERTS DITCH
Structure dossier · WDID 0200889 · DITCH · ASHCROFT DRAW · DWR record
Where this page's figures come from
Generated 2026-08-28 00:57 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (0576005) — 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.
Current administration
● Fully called out — call at LOWER LATHAM DITCH (SOUTH PLATTE RIVER, priority 1877-11-14).
● Fully called out — call at WESTERN MUTUAL DITCH (SOUTH PLATTE RIVER, priority 1871-08-09).
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 1895-03-25 — 857th most senior of the 21881 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: 0801644 (1895-03-09). Immediately behind: 0205990 (1895-03-31).
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 |
|---|---|---|---|---|---|---|---|
| 16520.0 | 1895-03-25 | 1918-08-02 | 21.0 | 0.0 | C | IRR |
Legal record & documents
1 decreed actions on record across
1 court case:
CA54658.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA54658 | 1 | 1918-08-02 | 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 12 years on record)
In a median year this structure has a recorded diversion of 119 AF. Its most recent year on record, 2024, came in at 51 AF — 43% of that, and 2nd lowest of the 12 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) |
|---|---|---|---|---|
| 1972 | 1,666 | 12th lowest of 12 · 1400% of median | 141 | 6.0 |
| 1973 | 1,369 | 11th lowest of 12 · 1150% of median | 169 | 5.0 |
| 2014 | 175 | 9th lowest of 12 · 147% of median | 152 | 1.1 |
| 2015 | 221 | 10th lowest of 12 · 186% of median | 183 | 1.0 |
| 2016 | 162 | 7th lowest of 12 · 136% of median | 134 | 1.7 |
| 2018 | 168 | 8th lowest of 12 · 141% of median | 104 | 2.3 |
| 2019 | 58 | 4th lowest of 12 · 49% of median | 141 | 0.8 |
| 2020 | 76 | 6th lowest of 12 · 64% of median | 82 | 0.7 |
| 2021 | 36 | 1st lowest of 12 · 30% of median | 83 | 0.5 |
| 2022 | 58 | 4th lowest of 12 · 49% of median | 151 | 0.7 |
| 2023 | 55 | 3rd lowest of 12 · 46% of median | 345 | 0.3 |
| 2024 | 51 | 2nd lowest of 12 · 43% of median | 305 | 0.4 |
Trends for this structure
Recorded use is falling over its last 12 recorded years (-23 AF/yr, Mann-Kendall p=0.000).
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 | 1990 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 18% of the irrigation seasons in 1972-2024 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.