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CARL AND WEBB DITCH
Structure dossier · WDID 7800523 · 1 · PAGOSA CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 22:48 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (f6d7fdc) — 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 1900-06-06 — 71st most senior of the 366 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: BIG PAGOSA DITCH (1900-06-06). Immediately behind: RALPH L RENO DITCH (1900-06-06).
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 |
|---|---|---|---|---|---|---|---|
| 19012.18419 | 1900-06-06 | 1912-11-13 | 0.5 | 0.0 | C | IRR | #144 |
| 19012.1842 | 1900-06-07 | 1912-11-13 | 3.0 | 0.0 | C | IRR | #146 |
| 19158.0 | 1902-06-15 | 1912-11-13 | 0.5 | 0.0 | C | IRR | #147 |
| 22962.22785 | 1912-05-20 | 1928-06-05 | 2.5 | 0.0 | C | IRR | #203 |
| 24241.0 | 1916-05-15 | 1928-06-05 | 0.5 | 0.0 | C | IRR | #209 |
Legal record & documents
5 decreed actions on record across
2 court cases:
CA0308, CA0689.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA0308 | 3 | 1928-06-05 | S |
CA0689 | 2 | 1912-11-13 | 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 222 AF. Its most recent year on record, 2025, came in at 222 AF — 100% of that, and 8th 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) |
|---|---|---|---|---|
| 2011 | 29 | 4th lowest of 15 · 13% of median | 37 | 0.7 |
| 2012 | 49 | 5th lowest of 15 · 22% of median | 36 | 1.8 |
| 2013 | 92 | 6th lowest of 15 · 41% of median | 135 | 1.4 |
| 2014 | 0 | 1st lowest of 15 · 0% of median | 14 | 0.0 |
| 2015 | 4 | 3rd lowest of 15 · 2% of median | 21 | 0.2 |
| 2016 | 0 | 1st lowest of 15 · 0% of median | 10 | 0.0 |
| 2017 | 204 | 7th lowest of 15 · 92% of median | 150 | 2.6 |
| 2018 | 313 | 11th lowest of 15 · 141% of median | 168 | 1.6 |
| 2019 | 444 | 14th lowest of 15 · 200% of median | 116 | 5.4 |
| 2020 | 356 | 13th lowest of 15 · 160% of median | 163 | 2.2 |
| 2021 | 345 | 12th lowest of 15 · 155% of median | 167 | 3.4 |
| 2022 | 239 | 9th lowest of 15 · 108% of median | 97 | 4.4 |
| 2023 | 863 | 15th lowest of 15 · 389% of median | 162 | 7.0 |
| 2024 | 246 | 10th lowest of 15 · 111% of median | 75 | 5.2 |
| 2025 | 222 | 8th lowest of 15 · 100% of median | 120 | 1.5 |
Trends for this structure
Recorded use is rising over its last 15 recorded years (+28 AF/yr, Mann-Kendall p=0.026).
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 | 5 right(s), seniority decoded |
| diversion record | present | 6688 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | patchy | 51% of the irrigation seasons in 1964-2025 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.