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GRANT WELL 12-28615-F
Structure dossier · WDID 6405580 · 2 · SOUTH PLATTE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 22:11 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 1895-04-28 — 92nd most senior of the 2052 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: HARMONY DITCH 1 (1895-04-28). Immediately behind: LAUER W 1-AD-7232(26530) (1895-04-28).
Decreed rights (9)
| 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 |
|---|---|---|---|---|---|---|---|
| 16554.0 | 1895-04-28 | 1896-07-20 | 0.0 | 0.0 | C | IRR | |
| 19490.0 | 1903-05-13 | 1911-01-05 | 0.0 | 0.0 | C | IRR | |
| 19765.0 | 1904-02-12 | 1908-12-08 | 0.0 | 0.0 | C | IRR | |
| 31226.0 | 1935-06-30 | 1971-12-31 | 0.0 | 0.0 | C | IRR | |
| 38831.0 | 1956-04-25 | 1971-12-31 | 0.0 | 0.0 | C | IRR | |
| 38867.0 | 1956-05-31 | 1971-12-31 | 0.0 | 0.0 | C | IRR | |
| 41101.0 | 1962-07-13 | 1971-12-31 | 0.0 | 0.0 | C | IRR | |
| 44292.0 | 1971-04-08 | 1971-12-31 | 0.0 | 0.0 | C | IRR | |
| 44558.0 | 1971-12-30 | 1971-12-31 | 0.0 | 0.0 | C | IRR |
Legal record & documents
21 decreed actions on record across
2 court cases:
W8704, 84CW0117.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
W8704 | 6 | 1971-12-31 | O |
84CW0117 | 15 | 1971-12-31 | O, 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 13 years on record)
In a median year this structure has a recorded diversion of 143 AF. Its most recent year on record, 2024, came in at 116 AF — 81% of that, and 4th lowest of the 13 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) |
|---|---|---|---|---|
| 2012 | 143 | 7th lowest of 13 · 100% of median | 68 | 1.5 |
| 2013 | 201 | 12th lowest of 13 · 141% of median | 78 | 1.7 |
| 2014 | 97 | 3rd lowest of 13 · 68% of median | 68 | 1.0 |
| 2015 | 171 | 10th lowest of 13 · 120% of median | 79 | 1.2 |
| 2016 | 126 | 6th lowest of 13 · 88% of median | 66 | 1.1 |
| 2017 | 274 | 13th lowest of 13 · 192% of median | 95 | 1.7 |
| 2018 | 161 | 9th lowest of 13 · 113% of median | 55 | 3.4 |
| 2019 | 93 | 2nd lowest of 13 · 65% of median | 21 | 4.0 |
| 2020 | 152 | 8th lowest of 13 · 106% of median | 44 | 2.5 |
| 2021 | 66 | 1st lowest of 13 · 46% of median | 41 | 1.2 |
| 2022 | 125 | 5th lowest of 13 · 87% of median | 78 | 0.9 |
| 2023 | 187 | 11th lowest of 13 · 131% of median | 122 | 0.9 |
| 2024 | 116 | 4th lowest of 13 · 81% of median | 81 | 0.9 |
Trends for this structure
Recorded use shows no clear trend over its last 13 recorded years — which is itself worth knowing.
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 | 9 right(s), seniority decoded |
| diversion record | present | 896 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 34% of the irrigation seasons in 2012-2024 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.