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COBB LAKE RES
Structure dossier · WDID 0303730 · 3 · CACHE LA POUDRE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 23:24 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 1861-06-01 — 26th most senior of the 2961 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: DOUGLAS RES (1861-06-01). Immediately behind: WATER SUPPLY & STORAGE RES 2&3 (1861-06-01).
Decreed rights (29)
| 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 |
|---|---|---|---|---|---|---|---|
| 4170.0 | 1861-06-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 4179.0 | 1861-06-10 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 6026.0 | 1866-07-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 6483.0 | 1867-10-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 6727.0 | 1868-06-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 7092.0 | 1869-06-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 7184.0 | 1869-09-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 7599.0 | 1870-10-21 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 7761.0 | 1871-04-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 7953.0 | 1871-10-10 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 8218.0 | 1872-07-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 8237.0 | 1872-07-20 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 8492.0 | 1873-04-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 8645.0 | 1873-09-01 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 8659.0 | 1873-09-15 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 9236.0 | 1875-04-15 | 1882-04-11 | 0.0 | 0.0 | A | MUN | |
| 10788.0 | 1879-07-15 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 11003.0 | 1880-02-15 | 1882-04-11 | 0.0 | 0.0 | C | MUN | |
| 15716.0 | 1893-01-10 | 1882-04-11 | 0.0 | 0.0 | A | MUN | |
| 18879.0 | 1901-09-09 | 1904-12-09 | 400.0 | 0.0 | A | IRR | |
| 21392.0 | 1908-07-27 | 1922-04-22 | 0.0 | 0.0 | A | MUN | |
| 26409.25397 | 1919-07-15 | 1930-05-03 | 9113.0 | 0.0 | A | IRR | |
| 35050.08218 | 1872-07-01 | 1953-09-10 | 0.0 | 0.0 | C | MUN | |
| 35050.08492 | 1873-04-01 | 1953-09-10 | 0.0 | 0.0 | C | MUN | |
| 35050.10736 | 1879-05-24 | 1953-09-10 | 0.0 | 0.0 | C | MUNDOM | |
| 35050.11003 | 1880-02-15 | 1953-09-10 | 0.0 | 0.0 | C | MUN | |
| 35050.32506 | 1938-12-31 | 1953-09-10 | 11320.0 | 0.0 | A | IRR | |
| 46751.20669 | 1906-08-04 | 1978-12-31 | 0.0 | 0.0 | A | MUN | |
| 52218.0 | 1992-12-19 | 1992-12-31 | 0.0 | 22300.0 | A | IRRMUNCOMINDRECFISFIRDOMSTKAUG |
Legal record & documents
52 decreed actions on record across
8 court cases:
92CW0158, 92CW0129, 05CW0323, W0137, CA11217, CA2031, 92CW0032, 08CW0277.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
92CW0158 | 1 | 1992-12-31 | S |
92CW0129 | 21 | 1978-12-31 | O, S |
05CW0323 | 21 | 1978-12-31 | O, S |
W0137 | 1 | 1953-09-10 | S |
CA11217 | 2 | 1953-09-10 | S |
CA2031 | 1 | 1930-05-03 | S |
92CW0032 | 1 | 1904-12-09 | O |
08CW0277 | 4 | 1882-04-11 | 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 3,458 AF. Its most recent year on record, 2011, came in at 3,457 AF — 100% of that, and 1st lowest of the 2 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 | 3,458 | 2nd lowest of 2 · 100% of median | 3,758 | 144 | 81.0 |
| 2011 | 3,457 | 1st lowest of 2 · 100% of median | 2,071 | 292 | 103.1 |
| 2012 | — | no recorded volume | 5,390 | 0 | — |
| 2013 | — | no recorded volume | 4,681 | 0 | — |
| 2014 | — | no recorded volume | 985 | 0 | — |
| 2015 | — | no recorded volume | 2,244 | 0 | — |
| 2016 | — | no recorded volume | 2,947 | 0 | — |
| 2017 | — | no recorded volume | 2,430 | 0 | — |
| 2018 | — | no recorded volume | 4,147 | 0 | — |
| 2019 | — | no recorded volume | 2,921 | 0 | — |
| 2020 | — | no recorded volume | 4,272 | 0 | — |
| 2021 | — | no recorded volume | 3,102 | 0 | — |
| 2022 | — | no recorded volume | 3,173 | 0 | — |
| 2023 | — | no recorded volume | 1,598 | 0 | — |
| 2024 | — | no recorded volume | 2,932 | 0 | — |
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 | 29 right(s), seniority decoded |
| diversion record | present | 2224 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 20% of the irrigation seasons in 1972-2024 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.