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YAMCOLO RESERVOIR
Structure dossier · WDID 5804240 · 3 · BEAR RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 20:28 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.
Which of its rights get called out?
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 1963-02-26 — 812th most senior of the 3097 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: GUIDO DITCH (1962-10-04). Immediately behind: SANDELIN RES NO3 (1963-03-25).
Decreed rights (5)
| 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 |
|---|---|---|---|---|---|---|---|
| 41329.0 | 1963-02-26 | 1964-03-30 | 6531.9 | 0.0 | A | STOIRRINDDOMEXB | 56A |
| 41727.39991 | 1959-06-29 | 1972-05-30 | 0.0 | 0.0 | A | STOIRRMUNINDDOMSTKEXBPWR | 39A |
| 47481.37136 | 1951-09-04 | 1980-12-31 | 1000.0 | 0.0 | A | STOIRRINDDOMEXBALL | |
| 47905.0 | 1981-02-27 | 1981-12-31 | 914.0 | 7086.0 | A | IRRMUNINDDOMSTKEXBALL | |
| 50769.50653 | 1988-09-06 | 1989-12-31 | 525.0 | 0.0 | A | IRRMUNINDRECFISDOMEXB |
Recorded use (last 13 years on record)
In a median year this structure has a recorded diversion of 4,551 AF. Its most recent year on record, 2017, came in at 3,138 AF — 69% of that, and 2nd lowest of the 6 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) |
|---|---|---|---|---|---|
| 2006 | — | no recorded volume | 1,497 | 0 | — |
| 2007 | — | no recorded volume | 25,536 | 0 | — |
| 2008 | — | no recorded volume | 24,793 | 0 | — |
| 2009 | — | no recorded volume | 29,035 | 0 | — |
| 2010 | — | no recorded volume | 23,194 | 0 | — |
| 2011 | — | no recorded volume | 1,648 | 0 | — |
| 2012 | 776 | 1st lowest of 6 · 17% of median | 6,806 | 61 | 6.4 |
| 2013 | 4,877 | 4th lowest of 6 · 107% of median | 5,991 | 274 | 48.0 |
| 2014 | 5,766 | 5th lowest of 6 · 127% of median | 1,829 | 279 | 62.4 |
| 2015 | 4,225 | 3rd lowest of 6 · 93% of median | 1,767 | 304 | 30.5 |
| 2016 | 5,999 | 6th lowest of 6 · 132% of median | 4,289 | 331 | 39.8 |
| 2017 | 3,138 | 2nd lowest of 6 · 69% of median | 4,387 | 177 | 23.2 |
| 2019 | — | no recorded volume | 1,244 | 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.