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WESTERN UNION AUG RES
Structure dossier · WDID 2304009 · RESERVOIR · BUFFALO CREEK · DWR record
Where this page's figures come from
Generated 2026-08-28 03:02 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (0576005) — 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.
Current administration
● Fully called out — call at LAST CHANCE DITCH 2 (SOUTH PLATTE RIVER, priority 1863-12-30).
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 1867-07-01 — 233rd most senior of the 21881 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: 2303978 (1867-07-01). Immediately behind: 2304010 (1867-07-01).
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 |
|---|---|---|---|---|---|---|---|
| 6391.0 | 1867-07-01 | 1889-10-18 | 76.4 | 0.0 | A | AUG | |
| 13635.0 | 1887-05-01 | 1889-10-18 | 36.72 | 0.0 | A | AUG | |
| 50038.45898 | 1975-08-31 | 1987-12-31 | 180.0 | 0.0 | A | IRRCOMRECFISDOMAUGWLD |
Legal record & documents
10 decreed actions on record across
6 court cases:
94CW0166, 86CW0287, 15CW3136, 08CW0057, 01CW0093, W8109.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
94CW0166 | 2 | 1987-12-31 | S |
86CW0287 | 1 | 1987-12-31 | S |
15CW3136 | 2 | 1987-12-31 | S |
08CW0057 | 1 | 1987-12-31 | S |
01CW0093 | 2 | 1987-12-31 | S |
W8109 | 2 | 1889-10-18 | 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 23 AF. Its most recent year on record, 2000, came in at 3 AF — 13% of that, and 3rd lowest of the 14 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) |
|---|---|---|---|---|---|
| 1987 | 75 | 14th lowest of 14 · 326% of median | — | 32 | 2.0 |
| 1988 | 36 | 10th lowest of 14 · 156% of median | 2 | 10 | 2.0 |
| 1989 | 28 | 8th lowest of 14 · 122% of median | 2 | 31 | 1.2 |
| 1990 | 36 | 10th lowest of 14 · 156% of median | 2 | 19 | 1.0 |
| 1991 | 18 | 7th lowest of 14 · 78% of median | 2 | 10 | 1.0 |
| 1992 | 30 | 9th lowest of 14 · 130% of median | 3 | 59 | 1.0 |
| 1993 | 40 | 13th lowest of 14 · 174% of median | 2 | 11 | 2.0 |
| 1994 | 2 | 1st lowest of 14 · 9% of median | 2 | 2 | 1.0 |
| 1995 | 4 | 4th lowest of 14 · 17% of median | 2 | 3 | 1.0 |
| 1996 | 2 | 1st lowest of 14 · 9% of median | 2 | 2 | 1.0 |
| 1997 | 38 | 12th lowest of 14 · 165% of median | 2 | 20 | 1.0 |
| 1998 | 4 | 4th lowest of 14 · 17% of median | 4 | 10 | 0.2 |
| 1999 | 5 | 6th lowest of 14 · 22% of median | 5 | 10 | 0.3 |
| 2000 | 3 | 3rd lowest of 14 · 13% of median | 9 | 7 | 0.2 |
| 2001 | — | no recorded volume | 20 | 0 | — |
Trends for this structure
Recorded use is falling over its last 14 recorded years (-3 AF/yr, Mann-Kendall p=0.042).
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 | 1191 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 29% of the irrigation seasons in 1982-2001 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.