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ST MICHAELS RESERVOIR
Structure dossier · WDID 0203408 · RESERVOIR · ASHCROFT DRAW · DWR record
Where this page's figures come from
Generated 2026-08-27 22:21 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (0576005) — 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.
Current administration
● Fully called out — call at LOWER LATHAM DITCH (SOUTH PLATTE RIVER, priority 1877-11-14).
● Fully called out — call at WESTERN MUTUAL DITCH (SOUTH PLATTE RIVER, priority 1871-08-09).
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 2017-08-03 — 21516th most senior of the 21881 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: CONSOL ROCK WELL 3-12537 (2012-12-12). Immediately behind: 8005826 (2019-06-07).
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 |
|---|---|---|---|---|---|---|---|
| 62457.61211 | 2017-08-03 | 2021-12-31 | 0.0 | 285.0 | A | IRRRECFISSTKAUGWLD | |
| 62457.61211 | 2017-08-03 | 2021-12-31 | 0.0 | 10.0 | C | IRRRECFISSTKAUGWLD |
Legal record & documents
10 decreed actions on record across
2 court cases:
21CW3225, 00CW0052.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
21CW3225 | 2 | 2021-12-31 | S |
00CW0052 | 8 | 2003-12-31 | 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 12 years on record)
In a median year this structure has a recorded diversion of 13 AF. Its most recent year on record, 2015, came in at 18 AF — 138% of that, and 2nd lowest of the 2 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) |
|---|---|---|---|---|---|
| 2012 | — | no recorded volume | 127 | 0 | — |
| 2013 | 8 | 1st lowest of 2 · 62% of median | 634 | 14 | 0.5 |
| 2014 | — | no recorded volume | 1,164 | 0 | — |
| 2015 | 18 | 2nd lowest of 2 · 138% of median | 1,821 | 8 | 3.8 |
| 2016 | — | no recorded volume | 1,223 | 0 | — |
| 2017 | — | no recorded volume | 1,838 | 0 | — |
| 2018 | — | no recorded volume | 1,759 | 0 | — |
| 2019 | — | no recorded volume | 3,135 | 0 | — |
| 2020 | — | no recorded volume | 1,402 | 0 | — |
| 2021 | — | no recorded volume | 579 | 0 | — |
| 2022 | — | no recorded volume | 703 | 0 | — |
| 2023 | — | no recorded volume | 545 | 0 | — |
How good is our record of it?
Grade B (7/10 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 | fragment | 22 measured day(s) on file (under 180 -- a season, not a history) |
| record continuity | unknown | record too short to assess continuity (needs 2+ years of span and 180+ 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.