Hydrohistorian
← My Water · Print / save as PDF
CASTLE ROCK W 203
Structure dossier · WDID 0809581 · WELL · GROUNDWATER: SOUTH PLATTE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-28 01:18 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 LAST CHANCE DITCH 2 (SOUTH PLATTE RIVER, priority 1863-12-30).
● Fully called out — call at NEVADA DITCH (SOUTH PLATTE RIVER, priority 1865-12-30).
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 1985-11-14 — 9341st 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: 0802214 (1985-11-14). Immediately behind: 0809582 (1985-11-14).
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 |
|---|---|---|---|---|---|---|---|
| 49626.0 | 1985-11-14 | 1985-12-31 | 0.09 | 0.467 | C | IRRMUNCOMINDRECFISFIRDOMSTKAUG |
Legal record & documents
2 decreed actions on record across
2 court cases:
85CW0480, 19CW3078.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
85CW0480 | 1 | 1985-12-31 | S |
19CW3078 | 1 | 1985-12-31 | 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 7 years on record)
In a median year this structure has a recorded diversion of 40 AF. Its most recent year on record, 2024, came in at 25 AF — 62% of that, and 2nd lowest of the 7 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) |
|---|---|---|---|---|
| 2018 | 9 | 1st lowest of 7 · 22% of median | 61 | 0.1 |
| 2019 | 60 | 6th lowest of 7 · 150% of median | 303 | 4.6 |
| 2020 | 119 | 7th lowest of 7 · 298% of median | 299 | 4.7 |
| 2021 | 40 | 4th lowest of 7 · 100% of median | 365 | 0.1 |
| 2022 | 43 | 5th lowest of 7 · 108% of median | 365 | 0.1 |
| 2023 | 34 | 3rd lowest of 7 · 85% of median | 365 | 0.1 |
| 2024 | 25 | 2nd lowest of 7 · 62% of median | 213 | 0.1 |
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 | 1971 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | continuous | 100% of the irrigation seasons in 2018-2024 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.