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ATKINSON CANAL
Structure dossier · WDID 3800517 · 1 · ROARING FORK RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 22:49 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (2deb1d7) — 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 1884-12-20 — 303rd most senior of the 4788 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: LIGHT SEEPAGE DITCH (1883-07-04). Immediately behind: SEVENTH ST DIVERSION STR (1884-12-20).
Decreed rights (6)
| 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 |
|---|---|---|---|---|---|---|---|
| 19720.12773 | 1884-12-20 | 1904-03-18 | 4.2 | 0.0 | C | IRRINDDOMAUGPWROTH | 105A |
| 20667.12868 | 1885-03-25 | 1907-02-15 | 1.0 | 0.0 | C | IRRINDDOMAUGPWROTH | 107A, DOM1 |
| 21795.21651 | 1909-04-12 | 1909-10-30 | 7.0 | 0.0 | C | IRRINDDOMAUGPWROTH | 228, DOM6 |
| 30941.22016 | 1910-04-12 | 1936-08-25 | 2.13 | 0.0 | C | IRR | 385 |
| 36602.0 | 1950-03-19 | 1952-10-24 | 12.0 | 0.0 | C | IRRINDDOMAUGPWROTH | 594 |
| 52595.50189 | 1987-05-31 | 1994-12-31 | 0.0 | 5.0 | C | IRRMUNCOMINDRECFIRDOM |
Legal record & documents
34 decreed actions on record across
10 court cases:
94CW0358, W2206, CA4033, 99CW0300, 95CW0180, CA3082, CA1388, 84CW0218, CA1225, CA1056.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
94CW0358 | 1 | 1994-12-31 | S |
W2206 | 8 | 1952-10-24 | S |
CA4033 | 1 | 1952-10-24 | S |
99CW0300 | 8 | 1952-10-24 | S |
95CW0180 | 8 | 1952-10-24 | S |
CA3082 | 1 | 1936-08-25 | S |
CA1388 | 2 | 1909-10-30 | S |
84CW0218 | 2 | 1909-10-30 | S |
CA1225 | 2 | 1907-02-15 | S |
CA1056 | 1 | 1904-03-18 | 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 15 years on record)
In a median year this structure has a recorded diversion of 3,020 AF. Its most recent year on record, 2021, came in at 3,902 AF — 129% of that, and 11th lowest of the 15 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) |
|---|---|---|---|---|---|
| 1991 | 3,020 | 8th lowest of 15 · 100% of median | — | 142 | 13.6 |
| 1992 | 3,541 | 9th lowest of 15 · 117% of median | — | 131 | 16.3 |
| 1993 | 3,815 | 10th lowest of 15 · 126% of median | — | 143 | 18.6 |
| 1994 | 2,828 | 7th lowest of 15 · 94% of median | — | 99 | 14.7 |
| 1995 | 736 | 3rd lowest of 15 · 24% of median | — | 68 | 6.5 |
| 1996 | 1,544 | 4th lowest of 15 · 51% of median | — | 86 | 12.2 |
| 1997 | 617 | 2nd lowest of 15 · 20% of median | — | 62 | 7.0 |
| 1998 | 2,047 | 6th lowest of 15 · 68% of median | — | 104 | 16.0 |
| 1999 | 1,993 | 5th lowest of 15 · 66% of median | — | 153 | 10.0 |
| 2000 | 0 | 1st lowest of 15 · 0% of median | — | 2 | 0.0 |
| 2017 | 3,925 | 12th lowest of 15 · 130% of median | 3,925 | 170 | 11.7 |
| 2018 | 3,925 | 12th lowest of 15 · 130% of median | 3,925 | 170 | 11.7 |
| 2019 | 3,925 | 12th lowest of 15 · 130% of median | 3,925 | 170 | 11.7 |
| 2020 | 4,622 | 15th lowest of 15 · 153% of median | 4,622 | 200 | 11.7 |
| 2021 | 3,902 | 11th lowest of 15 · 129% of median | 3,902 | 169 | 11.7 |
Trends for this structure
Recorded use shows no clear trend over its last 15 recorded years — which is itself worth knowing.
How good is our record of it?
Grade B (8/10 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 | 6 right(s), seniority decoded |
| diversion record | present | 4313 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | patchy | 43% of the irrigation seasons in 1975-2021 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.