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MCHATTEN RESERVOIR
Structure dossier · WDID 4303652 · 3 · COAL CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 21:28 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.
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 1896-07-06 — 621st most senior of the 3293 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: NEW ARCHER WARNER DITCH (1888-10-18). Immediately behind: MEEKER BRIDGE DITCH (1887-12-11).
Decreed rights (1)
| 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 |
|---|---|---|---|---|---|---|---|
| 19638.16989 | 1896-07-06 | 1904-02-15 | 64.2 | 0.0 | A | STOFIS | NONE |
Recorded use (last 8 years on record)
In a median year this structure has a recorded diversion of 63 AF. Its most recent year on record, 2010, came in at 60 AF — 95% of that, and 1st 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) |
|---|---|---|---|---|---|
| 2006 | 63 | 3rd lowest of 5 · 100% of median | — | 17 | 2.0 |
| 2007 | 63 | 3rd lowest of 5 · 100% of median | — | 26 | 1.5 |
| 2008 | 60 | 1st lowest of 5 · 95% of median | 60 | 31 | 1.0 |
| 2009 | 63 | 3rd lowest of 5 · 100% of median | — | 33 | 1.0 |
| 2010 | 60 | 1st lowest of 5 · 95% of median | 60 | 31 | 1.0 |
| 2011 | — | no recorded volume | 75 | 0 | — |
| 2012 | — | no recorded volume | 127 | 0 | — |
| 2017 | — | no recorded volume | 57 | 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.