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SEBASTIAN TAM DITCH
Structure dossier · WDID 7100595 · 1 · DOLORES RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 20:29 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.
Which of its rights get called out?
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 1883-05-31 — 21st most senior of the 279 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: ROYCE AND RISLEY DITCH (1882-07-22). Immediately behind: MONUMENT ROCK DITCH (1885-06-01).
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 |
|---|---|---|---|---|---|---|---|
| 12204.0 | 1883-05-31 | 1892-02-01 | 1.0 | 0.0 | C | IRR | D-14 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 122 AF. Its most recent year on record, 2025, came in at 71 AF — 58% of that, and 4th 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) |
|---|---|---|---|---|
| 2007 | 115 | 7th lowest of 15 · 94% of median | 105 | 1.0 |
| 2012 | 621 | 11th lowest of 15 · 509% of median | 183 | 5.1 |
| 2013 | 1,008 | 12th lowest of 15 · 826% of median | 246 | 5.0 |
| 2014 | 1,108 | 13th lowest of 15 · 908% of median | 365 | 4.3 |
| 2015 | 1,911 | 15th lowest of 15 · 1566% of median | 365 | 6.4 |
| 2016 | 1,497 | 14th lowest of 15 · 1227% of median | 366 | 4.6 |
| 2017 | 491 | 10th lowest of 15 · 402% of median | 304 | 2.2 |
| 2018 | 91 | 6th lowest of 15 · 75% of median | 247 | 0.6 |
| 2019 | 166 | 9th lowest of 15 · 136% of median | 133 | 1.2 |
| 2020 | 122 | 8th lowest of 15 · 100% of median | 151 | 2.5 |
| 2021 | 71 | 4th lowest of 15 · 58% of median | 123 | 0.5 |
| 2022 | 45 | 1st lowest of 15 · 37% of median | 105 | 0.5 |
| 2023 | 45 | 1st lowest of 15 · 37% of median | 77 | 0.4 |
| 2024 | 57 | 3rd lowest of 15 · 47% of median | 77 | 0.5 |
| 2025 | 71 | 4th lowest of 15 · 58% of median | 141 | 0.7 |
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.