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OLYMPUS TUNNEL
Structure dossier · WDID 0401000 · 7 · BIG THOMPSON RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 23:11 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 1861-11-10 — 16th most senior of the 1296 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: VIESTENZ-SMITH PARK PUMP (1861-11-10). Immediately behind: LAKE ESTES (1861-11-10).
Decreed rights (21)
| 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 |
|---|---|---|---|---|---|---|---|
| 4332.0 | 1861-11-10 | 1883-05-28 | 0.0 | 0.0 | A | IRRMUNCOMINDRECFIRDOMAUGOTH | |
| 4332.0 | 1861-11-10 | 1883-05-28 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFIRDOMAUGOTH | |
| 4839.0 | 1863-04-01 | 1883-05-28 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFIRDOMAUGOTH | |
| 5235.0 | 1864-05-01 | 1883-05-28 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFIRDOMAUGOTH | |
| 5772.0 | 1865-10-20 | 1883-05-28 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFIRDOMAUGOTH | |
| 5784.0 | 1865-11-01 | 1883-05-28 | 0.0 | 0.0 | C | MUN | |
| 5923.0 | 1866-03-20 | 1883-05-28 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFIRDOMAUGOTH | |
| 6269.0 | 1867-03-01 | 1883-05-28 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFIRDOMAUGOTH | |
| 6361.0 | 1867-06-01 | 1883-05-28 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFIRDOMAUGOTH | |
| 7598.0 | 1870-10-20 | 1883-05-28 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFIRDOMAUGOTH | |
| 7944.0 | 1871-10-01 | 1883-05-28 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFIRDOMAUGOTH | |
| 8157.0 | 1872-05-01 | 1883-05-28 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFIRDOMAUGOTH | |
| 8522.0 | 1873-05-01 | 1883-05-28 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFIRDOMAUGOTH | |
| 8575.0 | 1873-06-23 | 1883-05-28 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFIRDOMAUGOTH | |
| 8699.0 | 1873-10-25 | 1883-05-28 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFIRDOMAUGOTH | |
| 10167.0 | 1877-11-01 | 1883-05-28 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFIRDOMAUGOTH | |
| 10532.0 | 1878-11-01 | 1883-05-28 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFIRDOMAUGOTH | |
| 11269.0 | 1880-11-07 | 1883-05-28 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFIRDOMAUGOTH | |
| 12313.0 | 1883-09-17 | 1883-05-28 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFIRDOMAUGOTH | |
| 55881.0 | 2002-12-30 | 2002-12-31 | 0.0 | 0.0 | C | MUN | |
| 60630.38873 | 1956-06-06 | 2016-12-31 | 566.0 | 0.0 | C | PWR |
Legal record & documents
66 decreed actions on record across
7 court cases:
16CW3193, 02CW0394, 02CW0393, 89CW0128, 07CW0325, 03CW0354, 02CW0392.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
16CW3193 | 1 | 2016-12-31 | S |
02CW0394 | 8 | 2002-12-31 | S |
02CW0393 | 13 | 2002-12-31 | S |
89CW0128 | 17 | 1883-05-28 | O |
07CW0325 | 1 | 1883-05-28 | O |
03CW0354 | 7 | 1883-05-28 | O |
02CW0392 | 19 | 1883-05-28 | 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 272,711 AF. Its most recent year on record, 2024, came in at 193,366 AF — 71% of that, and 3rd 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 | 69,473 | 1st lowest of 15 · 26% of median | 157 | 559.0 |
| 2011 | 294,576 | 12th lowest of 15 · 108% of median | 306 | 806.0 |
| 2012 | 277,779 | 10th lowest of 15 · 102% of median | 305 | 596.7 |
| 2013 | 73,794 | 2nd lowest of 15 · 27% of median | 192 | 599.4 |
| 2014 | 316,088 | 15th lowest of 15 · 116% of median | 364 | 922.3 |
| 2015 | 212,280 | 5th lowest of 15 · 78% of median | 349 | 901.2 |
| 2016 | 272,711 | 8th lowest of 15 · 100% of median | 333 | 554.0 |
| 2017 | 215,761 | 7th lowest of 15 · 79% of median | 237 | 552.0 |
| 2018 | 276,095 | 9th lowest of 15 · 101% of median | 333 | 553.6 |
| 2019 | 305,737 | 14th lowest of 15 · 112% of median | 355 | 559.0 |
| 2020 | 206,561 | 4th lowest of 15 · 76% of median | 335 | 560.0 |
| 2021 | 296,678 | 13th lowest of 15 · 109% of median | 365 | 553.0 |
| 2022 | 215,544 | 6th lowest of 15 · 79% of median | 338 | 552.0 |
| 2023 | 281,274 | 11th lowest of 15 · 103% of median | 339 | 553.0 |
| 2024 | 193,366 | 3rd lowest of 15 · 71% of median | 216 | 552.0 |
Call-derived yield: senior right divertible 100.0% of a median season / 61.2% dry-year.
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 | 21 right(s), seniority decoded |
| diversion record | present | 4851 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | patchy | 73% of the irrigation seasons in 1993-2024 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.