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EPPERSON DITCH/PUMP
Structure dossier · WDID 0801015 · PUMP · SOUTH PLATTE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-28 00:06 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
● Junior rights called out — call at LOWER LATHAM DITCH (SOUTH PLATTE RIVER, priority 1877-11-14).
● Junior rights called out — call at WESTERN MUTUAL DITCH (SOUTH PLATTE RIVER, priority 1871-08-09).
● Junior rights called out — call at HARMONY DITCH 1 (SOUTH PLATTE RIVER, priority 1897-05-02).
● Junior rights called out — call at SOUTH PLATTE RIVER COMPACT (SOUTH PLATTE RIVER, priority 1897-06-13).
● Junior rights called out — call at LOWER PLATTE BEAVER D (SOUTH PLATTE RIVER, priority 1888-04-14).
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 1860-05-01 — 2nd 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: BRANTNER DITCH (1860-04-01). Immediately behind: WALTER S WELTON RES (1860-05-15).
Decreed rights (13)
| 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 |
|---|---|---|---|---|---|---|---|
| 3774.0 | 1860-05-01 | 1883-12-10 | 0.34 | 0.0 | C | IRR | |
| 4170.0 | 1861-06-01 | 1884-02-04 | 0.0 | 0.0 | C | MUNALL | |
| 4353.0 | 1861-12-01 | 1884-02-04 | 0.0 | 0.0 | C | MUNALL | |
| 4362.0 | 1861-12-10 | 1884-02-04 | 0.0 | 0.0 | C | MUNALL | |
| 4627.0 | 1862-09-01 | 1884-02-04 | 0.0 | 0.0 | C | MUNALL | |
| 4822.0 | 1863-03-15 | 1883-04-28 | 0.0 | 0.0 | A | MUNAUG | |
| 4822.0 | 1863-03-15 | 1883-04-28 | 0.0 | 0.0 | C | MUNAUG | |
| 5418.0 | 1864-10-31 | 1884-02-04 | 0.0 | 0.0 | C | MUNALL | |
| 5753.0 | 1865-10-01 | 1884-02-04 | 0.0 | 0.0 | C | MUNALL | |
| 7015.0 | 1869-03-16 | 1884-02-04 | 0.0 | 0.0 | C | MUNALL | |
| 7791.0 | 1871-05-01 | 1884-02-04 | 0.0 | 0.0 | C | MUNALL | |
| 11748.0 | 1882-03-01 | 1884-02-04 | 0.0 | 0.0 | C | MUNALL | |
| 51499.39575 | 1958-05-09 | 1991-12-31 | 2.25 | 0.0 | C | IRR |
Legal record & documents
15 decreed actions on record across
11 court cases:
91CW0029, 91CW0109, 91CW0105, 91CW0103, 91CW0102, 91CW0100, CA49298, CA11038, CA1103, 91CW0030 and 1 more below.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
91CW0029 | 1 | 1991-12-31 | S |
91CW0109 | 2 | 1884-02-04 | O |
91CW0105 | 1 | 1884-02-04 | O |
91CW0103 | 3 | 1884-02-04 | O |
91CW0102 | 1 | 1884-02-04 | O |
91CW0100 | 2 | 1884-02-04 | O |
CA49298 | 1 | 1883-12-10 | O |
CA11038 | 1 | 1883-12-10 | O |
CA1103 | 1 | 1883-12-10 | O |
91CW0030 | 1 | 1883-12-10 | O |
09CW0084 | 1 | 1883-04-28 | 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 321 AF. Its most recent year on record, 2023, came in at 202 AF — 63% 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) |
|---|---|---|---|---|
| 1981 | 421 | 12th lowest of 15 · 131% of median | 156 | 2.0 |
| 1982 | 321 | 8th lowest of 15 · 100% of median | 118 | 2.0 |
| 1983 | 250 | 5th lowest of 15 · 78% of median | 85 | 3.0 |
| 1984 | 312 | 7th lowest of 15 · 97% of median | 97 | 2.0 |
| 1985 | 693 | 14th lowest of 15 · 216% of median | 187 | 2.0 |
| 1986 | 698 | 15th lowest of 15 · 217% of median | 198 | 2.0 |
| 1987 | 402 | 11th lowest of 15 · 125% of median | 153 | 2.0 |
| 1988 | 603 | 13th lowest of 15 · 188% of median | 262 | 2.4 |
| 1989 | 384 | 10th lowest of 15 · 120% of median | 214 | 1.3 |
| 1990 | 304 | 6th lowest of 15 · 95% of median | 192 | 1.5 |
| 1991 | 377 | 9th lowest of 15 · 117% of median | 245 | 1.3 |
| 1992 | 145 | 2nd lowest of 15 · 45% of median | 147 | 1.0 |
| 1993 | 40 | 1st lowest of 15 · 12% of median | 40 | 1.0 |
| 2022 | 185 | 3rd lowest of 15 · 58% of median | 184 | 1.3 |
| 2023 | 202 | 4th lowest of 15 · 63% of median | 304 | 1.4 |
Trends for this structure
Recorded use is falling over its last 15 recorded years (-6 AF/yr, Mann-Kendall p=0.038).
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 | 13 right(s), seniority decoded |
| diversion record | present | 4676 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | patchy | 40% of the irrigation seasons in 1969-2023 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.