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WEST GRAVEL LAKES COMBINED
Structure dossier · WDID 0203699 · RESERVOIR SYSTEM · SOUTH PLATTE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 22:15 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
● Junior rights called out — call at LOWER LATHAM DITCH (SOUTH PLATTE RIVER, priority 1877-11-14).
● Junior rights called out — call at WESTERN MUTUAL DITCH (SOUTH PLATTE RIVER, priority 1871-08-09).
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 1861-11-01 — 48th 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: 0806096 (1861-08-30). Immediately behind: TANI LAKES COMBINED (1861-11-01).
Decreed rights (20)
| 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 |
|---|---|---|---|---|---|---|---|
| 4323.0 | 1861-11-01 | 1884-10-04 | 0.0 | 0.0 | A | MUN | |
| 4323.0 | 1861-11-01 | 1884-10-04 | 0.0 | 0.0 | C | MUN | |
| 5057.0 | 1863-11-05 | 1884-10-04 | 0.0 | 0.0 | C | MUN | |
| 5205.0 | 1864-04-01 | 1883-04-28 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISFIRDOMAUGWLD | |
| 6273.0 | 1867-03-05 | 1884-10-04 | 0.0 | 0.0 | C | MUN | |
| 8861.0 | 1874-04-05 | 1884-10-04 | 0.0 | 0.0 | C | MUN | |
| 11841.07184 | 1869-09-01 | 1900-12-19 | 0.0 | 0.0 | A | IRRMUNCOMINDRECDOMAUGWLDALL | |
| 13108.0 | 1885-11-20 | 1893-07-08 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISDOMWLD | |
| 13393.0 | 1886-09-01 | 1893-07-08 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISFIRDOMAUGWLD | |
| 13468.0 | 1886-11-15 | 1893-07-08 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISFIRDOMAUGWLD | |
| 13772.0 | 1887-09-15 | 1893-07-08 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISFIRDOMAUGWLD | |
| 15895.07184 | 1869-09-01 | 1918-08-02 | 0.0 | 0.0 | A | IRRMUNCOMINDRECDOMAUGWLDALL | |
| 16718.14945 | 1890-12-01 | 1936-05-13 | 0.0 | 0.0 | A | IRRMUNCOMINDRECFISDOMAUGWLD | |
| 19055.0 | 1902-03-04 | 1936-05-13 | 0.0 | 0.0 | A | IRRMUNCOMINDRECFISFIRDOMSTKAUG | |
| 20890.19055 | 1902-03-04 | 1926-06-21 | 0.0 | 0.0 | A | IRRMUNCOMINDRECDOMAUGWLDALL | |
| 22614.0 | 1911-12-01 | 1936-05-13 | 0.0 | 0.0 | A | IRRMUNCOMINDRECFISDOMAUGWLD | |
| 43829.42304 | 1965-10-28 | 1970-12-31 | 0.0 | 0.0 | A | IRRMUNCOMINDRECFIRDOMAUGPWRRCH | |
| 48198.0 | 1981-12-17 | 1981-12-31 | 2825.0 | 775.0 | A | IRRMUNCOMINDRECFISDOMSTKAUGWLD | |
| 50477.0 | 1988-03-14 | 1988-12-31 | 521.34 | 423.66 | A | IRRMUNCOMINDRECFISDOMAUGWLD | |
| 61322.0 | 2017-11-22 | 2017-12-31 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFIRDOMAUGRCH |
Legal record & documents
68 decreed actions on record across
19 court cases:
17CW3177, 97CW0142, 88CW0270, 21CW3009, 95CW0204, 81CW0448, 88CW0206, 96CW1117, 90CW0211, 88CW0268 and 9 more below.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
17CW3177 | 1 | 2017-12-31 | S |
97CW0142 | 1 | 1988-12-31 | S |
88CW0270 | 4 | 1988-12-31 | S |
21CW3009 | 1 | 1988-12-31 | S |
95CW0204 | 1 | 1981-12-31 | S |
81CW0448 | 1 | 1981-12-31 | S |
88CW0206 | 2 | 1970-12-31 | S |
96CW1117 | 2 | 1936-05-13 | S |
90CW0211 | 5 | 1936-05-13 | S |
88CW0268 | 1 | 1936-05-13 | S |
00CW0262 | 7 | 1936-05-13 | S |
90CW0229 | 9 | 1922-06-21 | O, S |
87CW0107 | 10 | 1922-06-21 | O, S |
88CW0263 | 4 | 1913-05-22 | O, S |
88CW0262 | 3 | 1913-05-22 | O, S |
W9242-78B | 7 | 1889-10-18 | O |
W9242-78A | 3 | 1889-10-18 | O |
84CW0065 | 2 | 1889-10-18 | O |
19CW3240 | 4 | 1884-10-04 | 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 6,137 AF. Its most recent year on record, 2025, came in at 4,084 AF — 66% of that, and 4th 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 | 1,190 | 2nd lowest of 15 · 19% of median | 1,503 | 109 | 11.3 |
| 2012 | 164 | 1st lowest of 15 · 3% of median | 963 | 61 | 4.5 |
| 2013 | 9,935 | 15th lowest of 15 · 162% of median | 9,849 | 365 | 38.5 |
| 2014 | 9,267 | 14th lowest of 15 · 151% of median | 9,235 | 365 | 46.0 |
| 2015 | 6,895 | 11th lowest of 15 · 112% of median | 6,707 | 365 | 51.1 |
| 2016 | 8,272 | 13th lowest of 15 · 135% of median | 8,049 | 366 | 38.8 |
| 2017 | 6,995 | 12th lowest of 15 · 114% of median | 10,006 | 365 | 46.6 |
| 2018 | 6,137 | 8th lowest of 15 · 100% of median | 8,469 | 365 | 44.6 |
| 2019 | 5,168 | 6th lowest of 15 · 84% of median | 6,584 | 365 | 30.1 |
| 2020 | 4,902 | 5th lowest of 15 · 80% of median | 5,125 | 366 | 29.5 |
| 2021 | 6,443 | 9th lowest of 15 · 105% of median | 6,433 | 365 | 32.4 |
| 2022 | 6,628 | 10th lowest of 15 · 108% of median | 7,184 | 365 | 27.9 |
| 2023 | 3,767 | 3rd lowest of 15 · 61% of median | 5,553 | 365 | 33.7 |
| 2024 | 5,316 | 7th lowest of 15 · 87% of median | 6,404 | 366 | 37.8 |
| 2025 | 4,084 | 4th lowest of 15 · 66% of median | 4,419 | 304 | 36.2 |
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 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 | 20 right(s), seniority decoded |
| diversion record | present | 7542 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | continuous | 100% of the irrigation seasons in 1991-2026 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.