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BRANNAN LAKES
Structure dossier · WDID 0703339 · RESERVOIR · CLEAR CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 22:44 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (4ab2507) — 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
● Fully called out — call at SWADLEY LONGAN DITCH (RALSTON CREEK, priority 1861-04-09).
● Junior rights called out — call at CLEAR CR PLATTE RIVER D (CLEAR CREEK, priority 1861-11-01).
● Junior rights called out — call at FARMERS INDEPENDENT DITCH (SOUTH PLATTE RIVER, priority 1865-11-20).
Which of its rights are out of priority?
Not computable for this structure: no gage record for this year at this date, so there is nothing to find analogs for.
Where it sits in line
Priority 1861-11-01 — 50th most senior of the 1815 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: COLO AGRICULTURAL D (1861-11-01). Immediately behind: SLATER DITCH (1862-05-16).
On MAINSTEM at river mile 62.2, it is 104th of 107 down the reach. Immediately upstream: COLO AGRICULTURAL D. Immediately downstream: SAVERY PONDS 1,2.
Position on the modelled network, not a claim about whose water this is — a stream carries water from many rights at once, and diverted water returns to it.
Decreed rights (10)
| 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 | |
| 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 | IRRMUNCOMINDRECDOMAUGWLD | |
| 15895.07184 | 1869-09-01 | 1918-08-02 | 0.0 | 0.0 | A | IRRMUNCOMINDRECDOMAUGWLD | |
| 19055.0 | 1902-03-04 | 1936-05-13 | 0.0 | 0.0 | A | IRRMUNCOMINDRECDOMAUGWLDALL | |
| 20890.19055 | 1902-03-04 | 1926-06-21 | 0.0 | 0.0 | A | IRRMUNCOMINDRECDOMAUGWLD | |
| 51216.0 | 1990-03-23 | 1990-12-31 | 227.3 | 1272.7 | A | IRRMUNCOMINDRECFISFIRDOMAUGOTH |
Legal record & documents
16 decreed actions on record across
7 court cases:
98CW0381, 90CW0230, 90CW0211, 88CW0268, 18CW3090, 00CW0262, 19CW3240.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
98CW0381 | 1 | 1990-12-31 | S |
90CW0230 | 1 | 1990-12-31 | S |
90CW0211 | 5 | 1936-05-13 | S |
88CW0268 | 1 | 1936-05-13 | S |
18CW3090 | 2 | 1936-05-13 | S |
00CW0262 | 2 | 1936-05-13 | S |
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 67 AF. Its most recent year on record, 2025, came in at 232 AF — 346% of that, and 11th lowest of the 11 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) |
|---|---|---|---|---|---|
| 2002 | — | no recorded volume | 405 | 0 | — |
| 2003 | — | no recorded volume | 179 | 0 | — |
| 2005 | — | no recorded volume | 59 | 0 | — |
| 2006 | — | no recorded volume | 407 | 0 | — |
| 2009 | 5 | 1st lowest of 11 · 8% of median | — | 3 | 1.6 |
| 2010 | 76 | 7th lowest of 11 · 113% of median | — | 25 | 2.7 |
| 2012 | 9 | 2nd lowest of 11 · 13% of median | — | 2 | 4.8 |
| 2013 | 57 | 5th lowest of 11 · 85% of median | 54 | 5 | 10.0 |
| 2017 | 167 | 9th lowest of 11 · 249% of median | — | 21 | 9.6 |
| 2018 | 41 | 4th lowest of 11 · 61% of median | — | 3 | 9.2 |
| 2019 | 21 | 3rd lowest of 11 · 31% of median | 21 | 6 | 2.9 |
| 2020 | 67 | 6th lowest of 11 · 100% of median | 67 | 6 | 9.0 |
| 2021 | 169 | 10th lowest of 11 · 252% of median | — | 25 | 6.5 |
| 2022 | 146 | 8th lowest of 11 · 218% of median | 146 | 25 | 4.9 |
| 2025 | 232 | 11th lowest of 11 · 346% of median | 232 | 122 | 9.4 |
Trends for this structure
Recorded use is rising over its last 11 recorded years (+11 AF/yr, Mann-Kendall p=0.029).
Its reference gage, BRANNAN LAKES INLET: no clear flow trend.
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 | 10 right(s), seniority decoded |
| diversion record | current | 243 measured days, newest 313 day(s) before the data's end (DWR publishes ~1 year in arrears) |
| record continuity | sparse | 4% of the irrigation seasons in 1998-2025 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.