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WM L YOAST RESERVOIR 1
Structure dossier · WDID 5703587 · 3 · YOAST CREEK · DWR record
Where this page's figures come from
Generated 2026-08-28 02:16 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (a1c9146) — 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 1904-09-04 — 85th most senior of the 1003 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: WM L YOAST D 1,2 ALT PT (1904-09-04). Immediately behind: WM L YOAST RESERVOIR 2 (1904-09-04).
Decreed rights (2)
| 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 |
|---|---|---|---|---|---|---|---|
| 21092.1997 | 1904-09-04 | 1908-09-23 | 2.056 | 0.0 | A | IRR | 78.5 |
| 57343.1997 | 1904-09-04 | 2007-12-31 | 17.44 | 0.0 | A | IRRSTK | 78.5 |
Legal record & documents
4 decreed actions on record across
3 court cases:
07CW0060, 84CW0071, 09/23/1908.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
07CW0060 | 1 | 2007-12-31 | S |
84CW0071 | 1 | 1908-09-23 | S |
09/23/1908 | 2 | 1908-09-23 | S |
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 9 years on record)
In a median year this structure has a recorded diversion of 6 AF. Its most recent year on record, 2015, came in at 6 AF — 100% of that, and 2nd lowest of the 5 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) |
|---|---|---|---|---|---|
| 2007 | — | no recorded volume | 29 | 0 | — |
| 2008 | — | no recorded volume | 46 | 0 | — |
| 2009 | — | no recorded volume | 20 | 0 | — |
| 2010 | — | no recorded volume | 29 | 0 | — |
| 2011 | 0 | 1st lowest of 5 · 0% of median | — | 31 | 0.0 |
| 2012 | 6 | 2nd lowest of 5 · 100% of median | — | 365 | 0.0 |
| 2013 | 6 | 2nd lowest of 5 · 100% of median | — | 365 | 0.0 |
| 2014 | 6 | 2nd lowest of 5 · 100% of median | — | 365 | 0.0 |
| 2015 | 6 | 2nd lowest of 5 · 100% of median | — | 304 | 0.0 |
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 | 2 right(s), seniority decoded |
| diversion record | present | 1430 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | continuous | 80% of the irrigation seasons in 2007-2015 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.