Hydrohistorian
← My Water · Print / save as PDF
OLIGARCHY DITCH
Structure dossier · WDID 0500547 · 1 · SAINT VRAIN CREEK · DWR record
Where this page's figures come from
Generated 2026-08-28 02:35 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 1861-03-08 — 21st most senior of the 1289 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: SMEAD DITCH (1861-03-08). Immediately behind: BECKWITH DITCH (1861-03-08).
Decreed rights (30)
| 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 |
|---|---|---|---|---|---|---|---|
| 4085.0 | 1861-03-08 | 1882-06-02 | 0.0 | 0.0 | C | MUNAUGPWRWLDALL | |
| 4462.0 | 1862-03-20 | 1882-06-02 | 0.0 | 0.0 | C | MUNAUGPWRWLDALL | |
| 4488.0 | 1862-04-15 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISFIRDOMAUGPWR | |
| 4518.0 | 1862-05-15 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISFIRDOMAUGPWR | |
| 4657.0 | 1862-10-01 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISFIRDOMAUGPWR | |
| 4853.0 | 1863-04-15 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISFIRDOMAUGPWR | |
| 4883.0 | 1863-05-15 | 1882-06-02 | 0.0 | 0.0 | C | MUNAUGPWRWLDALL | |
| 5295.0 | 1864-06-30 | 1882-06-02 | 0.0 | 0.0 | C | MUNAUGPWRWLDALL | |
| 5600.0 | 1865-05-01 | 1882-06-02 | 0.0 | 0.0 | C | MUNAUGPWRWLDALL | |
| 5631.0 | 1865-06-01 | 1882-06-02 | 0.0 | 0.0 | C | MUNAUGPWRWLDALL | |
| 5996.0 | 1866-06-01 | 1882-06-02 | 43.95 | 0.0 | C | IRRMUNCOMINDRECFISDOMAUGPWRWLD | |
| 6339.0 | 1867-05-10 | 1882-06-02 | 0.0 | 0.0 | A | MUN | |
| 6339.0 | 1867-05-10 | 1882-06-02 | 0.0 | 0.0 | C | MUN | |
| 6756.0 | 1868-06-30 | 1882-06-02 | 0.0 | 0.0 | C | MUN | |
| 7012.0 | 1869-03-13 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNAUGPWRWLDALL | |
| 7092.0 | 1869-06-01 | 1882-06-02 | 0.0 | 0.0 | C | MUNAUGPWRWLDALL | |
| 7640.0 | 1870-12-01 | 1882-06-02 | 98.65 | 0.0 | C | IRRMUNCOMINDRECFISDOMAUGPWRWLD | |
| 7822.0 | 1871-06-01 | 1883-02-21 | 0.0 | 0.0 | C | ALL | |
| 8034.0 | 1871-12-30 | 1882-06-02 | 0.0 | 0.0 | C | MUN | |
| 8096.0 | 1872-03-01 | 1882-06-02 | 36.84 | 0.0 | C | IRR | |
| 8464.0 | 1873-03-04 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNAUGPWRWLDALL | |
| 8553.0 | 1873-06-01 | 1882-06-02 | 0.0 | 0.0 | C | MUNAUGPWRWLDALL | |
| 8857.0 | 1874-04-01 | 1882-06-02 | 58.07 | 0.0 | C | IRR | |
| 9953.0 | 1877-04-01 | 1882-06-02 | 0.0 | 0.0 | C | MUN | |
| 19271.0 | 1902-10-06 | 1907-03-13 | 84.2 | 0.0 | C | STO | |
| 19273.0 | 1902-10-08 | 1907-03-13 | 171.2 | 0.0 | C | STO | |
| 20890.19756 | 1904-02-03 | 1926-06-01 | 0.0 | 0.0 | C | ALL | |
| 29219.0 | 1929-12-31 | 1951-07-23 | 171.2 | 0.0 | C | STO | |
| 49974.0 | 1986-10-28 | 1986-12-31 | 0.0 | 1000.0 | C | STOMUN | |
| 56977.0 | 2005-12-30 | 2005-12-31 | 0.0 | 0.0 | C | AUGCURRCH |
Legal record & documents
66 decreed actions on record across
23 court cases:
05CW0331, 86CW0395, 86CW0394, CA11715, 87CW0231, CA4790, CA1335, 87CW0221, 87CW0220, 87CW0219 and 13 more below.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
05CW0331 | 18 | 2005-12-31 | S |
86CW0395 | 2 | 1986-12-31 | S |
86CW0394 | 1 | 1986-12-31 | S |
CA11715 | 1 | 1951-07-23 | S |
87CW0231 | 2 | 1926-06-01 | O, S |
CA4790 | 2 | 1907-03-13 | S |
CA1335 | 4 | 1882-06-02 | O |
87CW0221 | 1 | 1882-06-02 | O |
87CW0220 | 1 | 1882-06-02 | O |
87CW0219 | 1 | 1882-06-02 | O |
87CW0218 | 2 | 1882-06-02 | O |
87CW0216 | 1 | 1882-06-02 | O |
87CW0215 | 1 | 1882-06-02 | O |
87CW0214 | 4 | 1882-06-02 | O |
87CW0213 | 2 | 1882-06-02 | O |
87CW0212 | 1 | 1882-06-02 | O |
81CW0361 | 4 | 1882-06-02 | O |
07CW0330 | 1 | 1882-06-02 | O |
02CW0334 | 4 | 1882-06-02 | O |
01CW0188 | 4 | 1882-06-02 | O |
00CW0241 | 2 | 1882-06-02 | O |
00CW0240 | 4 | 1882-06-02 | O |
00CW0239 | 3 | 1882-06-02 | 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 6,476 AF. Its most recent year on record, 2024, came in at 6,476 AF — 100% of that, and 8th 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) |
|---|---|---|---|---|---|
| 2010 | 3,661 | 1st lowest of 15 · 56% of median | 2,033 | 149 | 52.8 |
| 2011 | 5,312 | 3rd lowest of 15 · 82% of median | — | 183 | 35.1 |
| 2012 | 3,904 | 2nd lowest of 15 · 60% of median | — | 160 | 48.1 |
| 2013 | 10,785 | 13th lowest of 15 · 166% of median | — | 184 | 82.9 |
| 2014 | 5,829 | 5th lowest of 15 · 90% of median | — | 192 | 39.4 |
| 2015 | 5,692 | 4th lowest of 15 · 88% of median | — | 155 | 74.6 |
| 2016 | 6,092 | 7th lowest of 15 · 94% of median | — | 200 | 57.7 |
| 2017 | 11,616 | 14th lowest of 15 · 179% of median | — | 167 | 110.5 |
| 2018 | 5,950 | 6th lowest of 15 · 92% of median | — | 203 | 45.2 |
| 2019 | 9,995 | 11th lowest of 15 · 154% of median | — | 265 | 71.4 |
| 2020 | 10,012 | 12th lowest of 15 · 155% of median | — | 252 | 68.1 |
| 2021 | 12,005 | 15th lowest of 15 · 185% of median | — | 212 | 93.4 |
| 2022 | 9,468 | 10th lowest of 15 · 146% of median | — | 179 | 80.9 |
| 2023 | 7,982 | 9th lowest of 15 · 123% of median | — | 190 | 71.3 |
| 2024 | 6,476 | 8th lowest of 15 · 100% of median | — | 179 | 34.7 |
Call-derived yield: senior right divertible 100.0% of a median season / 84.1% dry-year.
Trends for this structure
Recorded use is rising over its last 15 recorded years (+286 AF/yr, Mann-Kendall p=0.029).
How good is our record of it?
Grade A (9/10 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 | 30 right(s), seniority decoded |
| diversion record | present | 14211 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | continuous | 89% of the irrigation seasons in 1950-2024 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.