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EVANS DITCH
Structure dossier · WDID 6900504 · 1 · DISAPPOINTMENT CREEK · DWR record
Where this page's figures come from
Generated 2026-08-28 02:12 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 1915-06-20 — 15th most senior of the 55 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: YOUNG DITCH NO 2 AP (1912-04-01). Immediately behind: THOMAS DITCH (1923-06-01).
Decreed rights (3)
| 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 |
|---|---|---|---|---|---|---|---|
| 23911.0 | 1915-06-20 | 1937-03-08 | 2.0 | 0.0 | C | IRR | |
| 31289.0 | 1935-09-01 | 1937-03-08 | 1.75 | 0.0 | C | IRR | |
| 62395.0 | 2020-10-30 | 2020-12-31 | 0.0 | 1.0 | C | IRRFIRSTK |
Legal record & documents
4 decreed actions on record across
3 court cases:
20CW3043, W0064, CA1528.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
20CW3043 | 1 | 2020-12-31 | S |
W0064 | 1 | 1937-03-08 | S |
CA1528 | 2 | 1937-03-08 | 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 42 AF. Its most recent year on record, 2025, came in at 35 AF — 83% of that, and 5th 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) |
|---|---|---|---|---|---|
| 2011 | 79 | 10th lowest of 15 · 188% of median | — | 71 | 0.6 |
| 2012 | 0 | 1st lowest of 15 · 0% of median | — | 7 | 0.0 |
| 2013 | 68 | 9th lowest of 15 · 162% of median | — | 48 | 0.8 |
| 2014 | 2 | 3rd lowest of 15 · 5% of median | — | 29 | 0.1 |
| 2015 | 36 | 7th lowest of 15 · 86% of median | — | 61 | 0.3 |
| 2016 | 144 | 14th lowest of 15 · 343% of median | — | 42 | 2.1 |
| 2017 | 497 | 15th lowest of 15 · 1183% of median | 427 | 75 | 4.0 |
| 2018 | 82 | 11th lowest of 15 · 195% of median | 54 | 32 | 1.5 |
| 2019 | 90 | 13th lowest of 15 · 214% of median | 0 | 115 | 0.8 |
| 2020 | 87 | 12th lowest of 15 · 207% of median | 87 | 30 | 2.0 |
| 2021 | 42 | 8th lowest of 15 · 100% of median | 42 | 40 | 0.6 |
| 2022 | 0 | 1st lowest of 15 · 0% of median | 0 | 7 | 0.0 |
| 2023 | 21 | 4th lowest of 15 · 50% of median | 0 | 41 | 0.3 |
| 2024 | 35 | 5th lowest of 15 · 83% of median | 0 | 55 | 0.5 |
| 2025 | 35 | 5th lowest of 15 · 83% of median | 0 | 40 | 0.5 |
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 (7/10 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 | 3 right(s), seniority decoded |
| diversion record | present | 3547 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 22% of the irrigation seasons in 1950-2025 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.