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GURLEY RESERVOIR
Structure dossier · WDID 6003507 · 3 · MAVERICK DRAW · DWR record
Where this page's figures come from
Generated 2026-08-27 22:28 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 1888-05-30 — 80th most senior of the 2893 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: SAN JUAN VISTA WELL NO. (1887-06-20). Immediately behind: EAGLE DITCH (1888-06-05).
Decreed rights (8)
| 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 |
|---|---|---|---|---|---|---|---|
| 14030.0 | 1888-05-30 | 1897-06-11 | 199.0 | 0.0 | A | IRR | 1 |
| 23681.20603 | 1906-05-30 | 1916-09-30 | 702.0 | 0.0 | A | IRR | 5 |
| 23681.23298 | 1913-10-15 | 1916-09-30 | 2298.0 | 0.0 | A | IRR | 6 |
| 32811.31726 | 1936-11-11 | 1952-07-10 | 5801.0 | 0.0 | A | IRRSTK | 393 |
| 40861.0 | 1961-11-15 | 1967-01-16 | 1216.0 | 0.0 | A | IRRDOMSTK | 512 |
| 42251.0 | 1965-09-05 | 1967-01-16 | 1216.0 | 0.0 | A | IRRDOMSTK | 530 |
| 52595.43251 | 1968-06-01 | 1994-12-31 | 11532.0 | 0.0 | A | REC | |
| 53325.52412 | 1993-07-01 | 1996-12-31 | 10039.0 | 0.0 | A | IRRSTK |
Legal record & documents
9 decreed actions on record across
7 court cases:
96CW0263, 94CW0214, CA9042, 81CW0088, CA5882, CA2207, CA0898.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
96CW0263 | 1 | 1996-12-31 | S |
94CW0214 | 1 | 1994-12-31 | S |
CA9042 | 2 | 1967-01-16 | S |
81CW0088 | 1 | 1967-01-16 | S |
CA5882 | 1 | 1952-07-10 | S |
CA2207 | 2 | 1916-09-30 | S |
CA0898 | 1 | 1897-06-11 | 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 3,346 AF. Its most recent year on record, 2024, came in at 834 AF — 25% of that, and 3rd lowest of the 15 years with a recorded volume.
This structure records both diversions and reservoir releases — they are separate water movements and are accounted separately below.
| 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 | Released (AF) | Days recorded | Peak (cfs) |
|---|---|---|---|---|---|
| 2010 | 21,092 | 15th lowest of 15 · 630% of median | — | 162 | 185.0 |
| 2011 | 7,474 | 11th lowest of 15 · 223% of median | 23,425 | 212 | 208.0 |
| 2012 | 5,191 | 9th lowest of 15 · 155% of median | 14,118 | 118 | 161.0 |
| 2013 | 10,505 | 13th lowest of 15 · 314% of median | 10,392 | 273 | 171.0 |
| 2014 | 780 | 2nd lowest of 15 · 23% of median | 25,290 | 93 | 143.0 |
| 2015 | 8,198 | 12th lowest of 15 · 245% of median | 26,305 | 223 | 98.0 |
| 2016 | 17,050 | 14th lowest of 15 · 510% of median | 8,632 | 184 | 264.0 |
| 2017 | 3,346 | 8th lowest of 15 · 100% of median | 29,114 | 127 | 120.0 |
| 2018 | 48 | 1st lowest of 15 · 1% of median | 6,020 | 43 | 19.0 |
| 2019 | 2,172 | 5th lowest of 15 · 65% of median | 8,674 | 139 | 107.2 |
| 2020 | 1,401 | 4th lowest of 15 · 42% of median | 6,555 | 175 | 245.3 |
| 2021 | 2,701 | 6th lowest of 15 · 81% of median | 4,081 | 230 | 46.8 |
| 2022 | 7,294 | 10th lowest of 15 · 218% of median | 5,344 | 352 | 130.8 |
| 2023 | 2,728 | 7th lowest of 15 · 82% of median | 9,287 | 247 | 99.9 |
| 2024 | 834 | 3rd lowest of 15 · 25% of median | 4,229 | 69 | 76.0 |
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 | 8 right(s), seniority decoded |
| diversion record | present | 6397 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | patchy | 65% of the irrigation seasons in 1978-2024 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.