Hydrohistorian
← My Water · Print / save as PDF
SNOWMASS DITCH
Structure dossier · WDID 3801011 · 1 · SNOWMASS CREEK · DWR record
Where this page's figures come from
Generated 2026-08-28 02:16 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 1887-05-15 — 220th 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: ROBINSON AND HARRIS D (1887-04-20). Immediately behind: SNOWMASS CREEK PIPELINE (1887-05-15).
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 |
|---|---|---|---|---|---|---|---|
| 13649.0 | 1887-05-15 | 1889-05-11 | 3.2 | 0.0 | C | IRR | 176 |
| 30941.23257 | 1913-09-04 | 1936-08-25 | 5.475 | 0.0 | C | IRR | 393 |
Legal record & documents
7 decreed actions on record across
7 court cases:
W0564, W0490, W0427, CA3082, 03CW0321, CA0132, 81CW0029.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
W0564 | 1 | 1936-08-25 | S |
W0490 | 1 | 1936-08-25 | S |
W0427 | 1 | 1936-08-25 | S |
CA3082 | 1 | 1936-08-25 | S |
03CW0321 | 1 | 1936-08-25 | S |
CA0132 | 1 | 1889-05-11 | O |
81CW0029 | 1 | 1889-05-11 | O |
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 2,444 AF. Its most recent year on record, 2024, came in at 2,664 AF — 109% of that, and 12th 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) |
|---|---|---|---|---|
| 2009 | 2,307 | 6th lowest of 15 · 94% of median | 161 | 9.1 |
| 2011 | 2,212 | 3rd lowest of 15 · 90% of median | 160 | 9.1 |
| 2012 | 2,632 | 10th lowest of 15 · 108% of median | 191 | 9.0 |
| 2013 | 339 | 1st lowest of 15 · 14% of median | 39 | 5.5 |
| 2014 | 2,444 | 8th lowest of 15 · 100% of median | 156 | 10.5 |
| 2015 | 2,236 | 4th lowest of 15 · 92% of median | 196 | 9.3 |
| 2016 | 2,150 | 2nd lowest of 15 · 88% of median | 163 | 9.1 |
| 2017 | 2,416 | 7th lowest of 15 · 99% of median | 169 | 9.4 |
| 2018 | 2,823 | 14th lowest of 15 · 116% of median | 174 | 10.5 |
| 2019 | 2,660 | 11th lowest of 15 · 109% of median | 171 | 9.1 |
| 2020 | 2,270 | 5th lowest of 15 · 93% of median | 165 | 9.3 |
| 2021 | 2,846 | 15th lowest of 15 · 116% of median | 182 | 9.1 |
| 2022 | 2,675 | 13th lowest of 15 · 110% of median | 174 | 9.1 |
| 2023 | 2,532 | 9th lowest of 15 · 104% of median | 163 | 9.1 |
| 2024 | 2,664 | 12th lowest of 15 · 109% of median | 169 | 9.1 |
Trends for this structure
Recorded use is rising over its last 15 recorded years (+30 AF/yr, Mann-Kendall p=0.048).
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 | 5864 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | patchy | 40% of the irrigation seasons in 1956-2024 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.