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RIO GRANDE D 1
Structure dossier · WDID 2000810 · 1 · RIO GRANDE · DWR record
Where this page's figures come from
Generated 2026-08-28 02:51 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 1870-08-01 — 12th most senior of the 8016 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: MONTOYA D 4 (1870-04-30). Immediately behind: W0808 WELL NO 03 (1870-12-31).
Decreed rights (4)
| 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 |
|---|---|---|---|---|---|---|---|
| 7518.0 | 1870-08-01 | 1896-05-01 | 12.8 | 0.0 | C | STOIRRCOMRECFISDOMAUGWLD | 8 |
| 13301.0 | 1886-06-01 | 1896-05-01 | 12.0 | 0.0 | C | IRR | 285 |
| 16923.16617 | 1895-06-30 | 1903-04-09 | 1.2 | 0.0 | C | IRR | 1903-41I |
| 19456.13514 | 1886-12-31 | 1916-09-13 | 10.0 | 0.0 | C | IRR | 1916-16 |
Legal record & documents
6 decreed actions on record across
3 court cases:
84CW0104, 99CW0034, 05/01/1896.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
84CW0104 | 3 | 1916-09-13 | O, S |
99CW0034 | 2 | 1896-05-01 | O |
05/01/1896 | 1 | 1896-05-01 | O |
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 4,789 AF. Its most recent year on record, 2025, came in at 5,505 AF — 115% of that, and 13th 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) |
|---|---|---|---|---|
| 2011 | 4,789 | 8th lowest of 15 · 100% of median | 210 | 22.9 |
| 2012 | 4,149 | 3rd lowest of 15 · 87% of median | 211 | 21.9 |
| 2013 | 4,173 | 5th lowest of 15 · 87% of median | 197 | 23.6 |
| 2014 | 4,919 | 11th lowest of 15 · 103% of median | 199 | 24.0 |
| 2015 | 4,163 | 4th lowest of 15 · 87% of median | 215 | 22.8 |
| 2016 | 3,315 | 1st lowest of 15 · 69% of median | 223 | 15.2 |
| 2017 | 4,896 | 10th lowest of 15 · 102% of median | 217 | 22.8 |
| 2018 | 3,541 | 2nd lowest of 15 · 74% of median | 215 | 22.8 |
| 2019 | 4,281 | 7th lowest of 15 · 89% of median | 212 | 28.9 |
| 2020 | 4,799 | 9th lowest of 15 · 100% of median | 210 | 22.8 |
| 2021 | 4,932 | 12th lowest of 15 · 103% of median | 275 | 22.8 |
| 2022 | 4,276 | 6th lowest of 15 · 89% of median | 365 | 22.8 |
| 2023 | 6,131 | 15th lowest of 15 · 128% of median | 365 | 26.7 |
| 2024 | 5,545 | 14th lowest of 15 · 116% of median | 315 | 23.9 |
| 2025 | 5,505 | 13th lowest of 15 · 115% of median | 225 | 23.6 |
Trends for this structure
Recorded use is rising over its last 15 recorded years (+89 AF/yr, Mann-Kendall p=0.038).
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 | 4 right(s), seniority decoded |
| diversion record | present | 15869 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | continuous | 98% of the irrigation seasons in 1950-2025 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.