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ISLAND AC GRAVEL PIT NO2
Structure dossier · WDID 7205348 · 2 · COLORADO RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 22:06 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 1908-06-05 — 236th most senior of the 2166 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: SMITH STRUTHERS DITCH #2 (1908-06-05). Immediately behind: ISLAND AC GRAVEL PIT NO3 (1908-06-05).
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 |
|---|---|---|---|---|---|---|---|
| 22995.2134 | 1908-06-05 | 1916-06-01 | 0.0 | 0.0 | C | IRR | |
| 51499.50524 | 1988-04-30 | 1991-12-31 | 0.134 | 0.0 | C | RECFISEVPWLD |
Legal record & documents
2 decreed actions on record across
2 court cases:
91CW0219, 96CW0303.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
91CW0219 | 1 | 1991-12-31 | S |
96CW0303 | 1 | 1916-06-01 | 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 24 AF. Its most recent year on record, 2024, came in at 16 AF — 67% of that, and 1st lowest of the 15 years with a recorded volume.
| 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 | Days recorded | Peak (cfs) |
|---|---|---|---|---|
| 1998 | 47 | 15th lowest of 15 · 196% of median | 131 | 0.5 |
| 1999 | 44 | 14th lowest of 15 · 183% of median | 156 | 0.3 |
| 2000 | 40 | 12th lowest of 15 · 167% of median | 154 | 0.2 |
| 2001 | 31 | 11th lowest of 15 · 129% of median | 165 | 0.2 |
| 2002 | 40 | 12th lowest of 15 · 167% of median | 167 | 0.2 |
| 2004 | 24 | 8th lowest of 15 · 100% of median | 159 | 0.2 |
| 2005 | 20 | 5th lowest of 15 · 83% of median | 164 | 0.2 |
| 2006 | 20 | 5th lowest of 15 · 83% of median | 154 | 0.2 |
| 2007 | 21 | 7th lowest of 15 · 88% of median | 162 | 0.2 |
| 2008 | 17 | 2nd lowest of 15 · 71% of median | 144 | 0.2 |
| 2020 | 17 | 2nd lowest of 15 · 71% of median | 158 | 0.9 |
| 2021 | 24 | 8th lowest of 15 · 100% of median | 158 | 0.1 |
| 2022 | 25 | 10th lowest of 15 · 104% of median | 153 | 0.9 |
| 2023 | 17 | 2nd lowest of 15 · 71% of median | 184 | 0.1 |
| 2024 | 16 | 1st lowest of 15 · 67% of median | 184 | 0.1 |
Trends for this structure
Recorded use is falling over its last 15 recorded years (-1 AF/yr, Mann-Kendall p=0.001).
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 | 2 right(s), seniority decoded |
| diversion record | present | 2688 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | patchy | 44% of the irrigation seasons in 1996-2024 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.