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HAYDEN LAKE RES
Structure dossier · WDID 0604177 · RESERVOIR · BOULDER CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 20:39 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (96d5528) — every figure regenerates from this named code version and data image.
Which of its rights get called out?
Not computable for this structure: no administrative call record for this basin.
Where it sits in line
Priority 1905-07-21 — 304th most senior of the 1867 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: L F SPICER DITCH (1898-10-01). Immediately behind: 0600656 (1906-05-01).
On MAINSTEM at river mile 13.1, it is 19th of 78 down the reach. Immediately upstream: BUTTE MILL DITCH. Immediately downstream: GREEN DITCH.
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 (3)
| 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 |
|---|---|---|---|---|---|---|---|
| 27930.2029 | 1905-07-21 | 1953-09-28 | 190.1 | 0.0 | A | IRR | |
| 29391.0 | 1930-06-21 | 1953-09-28 | 311.7 | 0.0 | A | IRR | |
| 32385.0 | 1938-09-01 | 1953-09-28 | 501.8 | 0.0 | A | IRR |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 143 AF. Its most recent year on record, 2019, came in at 119 AF — 83% of that, and 6th 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) |
|---|---|---|---|---|
| 1976 | 395 | 15th lowest of 15 · 276% of median | 39 | 10.0 |
| 1977 | 121 | 7th lowest of 15 · 85% of median | 8 | 11.0 |
| 1978 | 317 | 14th lowest of 15 · 222% of median | 10 | 20.0 |
| 1980 | 61 | 4th lowest of 15 · 43% of median | 20 | 10.0 |
| 2009 | 143 | 8th lowest of 15 · 100% of median | 17 | 5.0 |
| 2010 | 260 | 13th lowest of 15 · 182% of median | 40 | 4.0 |
| 2011 | 198 | 11th lowest of 15 · 138% of median | 11 | 10.0 |
| 2012 | 48 | 1st lowest of 15 · 34% of median | 6 | 5.0 |
| 2013 | 198 | 11th lowest of 15 · 138% of median | 13 | 10.0 |
| 2014 | 50 | 2nd lowest of 15 · 35% of median | 10 | 3.0 |
| 2015 | 60 | 3rd lowest of 15 · 42% of median | 7 | 5.0 |
| 2016 | 192 | 10th lowest of 15 · 134% of median | 15 | 8.0 |
| 2017 | 159 | 9th lowest of 15 · 111% of median | 17 | 5.0 |
| 2018 | 99 | 5th lowest of 15 · 69% of median | 6 | 10.0 |
| 2019 | 119 | 6th lowest of 15 · 83% of median | 13 | 5.0 |
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.