Hydrohistorian
← My Water · Print / save as PDF
MCCORMICK WELL 2-10289
Structure dossier · WDID 6405887 · 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 1954-03-17 — 665th 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: FRAKER WELL 1-13119 (1954-03-08). Immediately behind: GRANT WELL 7-10098 (1954-03-31).
Decreed rights (2)
| 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 |
|---|---|---|---|---|---|---|---|
| 38061.0 | 1954-03-17 | 1972-12-31 | 2.0 | 0.0 | C | IRR | |
| 56002.0 | 2003-04-30 | 2003-12-31 | 2.3 | 0.0 | C | IRRMUNCOMFIRSTKAUGRCH |
Legal record & documents
4 decreed actions on record across
3 court cases:
11CW0245, 03CW0209, W2284.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
11CW0245 | 1 | 2003-12-31 | S |
03CW0209 | 2 | 2003-12-31 | S |
W2284 | 1 | 1972-12-31 | 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 611 AF. Its most recent year on record, 2024, came in at 696 AF — 114% of that, and 10th 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) |
|---|---|---|---|---|
| 2010 | 141 | 1st lowest of 15 · 23% of median | 31 | 3.6 |
| 2011 | 468 | 3rd lowest of 15 · 77% of median | 222 | 2.2 |
| 2012 | 401 | 2nd lowest of 15 · 66% of median | 172 | 2.1 |
| 2013 | 611 | 8th lowest of 15 · 100% of median | 137 | 2.8 |
| 2014 | 819 | 13th lowest of 15 · 134% of median | 223 | 2.9 |
| 2015 | 837 | 14th lowest of 15 · 137% of median | 230 | 2.3 |
| 2016 | 537 | 5th lowest of 15 · 88% of median | 184 | 2.0 |
| 2017 | 638 | 9th lowest of 15 · 104% of median | 171 | 2.4 |
| 2018 | 698 | 11th lowest of 15 · 114% of median | 190 | 2.5 |
| 2019 | 752 | 12th lowest of 15 · 123% of median | 218 | 2.2 |
| 2020 | 604 | 7th lowest of 15 · 99% of median | 158 | 2.2 |
| 2021 | 578 | 6th lowest of 15 · 95% of median | 183 | 1.9 |
| 2022 | 498 | 4th lowest of 15 · 82% of median | 145 | 2.6 |
| 2023 | 902 | 15th lowest of 15 · 148% of median | 204 | 2.8 |
| 2024 | 696 | 10th lowest of 15 · 114% of median | 174 | 2.5 |
Trends for this structure
Recorded use shows no clear trend over its last 15 recorded years — which is itself worth knowing.
How good is our record of it?
Grade B (8/10 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 | 2 right(s), seniority decoded |
| diversion record | present | 2750 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | patchy | 74% of the irrigation seasons in 2007-2024 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.