Hydrohistorian
← My Water · Print / save as PDF
MCCOY DITCH
Structure dossier · WDID 1100799 · 1 · SOUTH ARKANSAS RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 23:45 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 1890-08-06 — 307th most senior of the 1489 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: SMYTH WELL NO 1 (1910-12-31). Immediately behind: RICHARDS DITCH (1887-07-01).
Decreed rights (1)
| 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 |
|---|---|---|---|---|---|---|---|
| 22306.14828 | 1890-08-06 | 1911-02-04 | 3.5 | 0.0 | C | IRR |
Legal record & documents
1 decreed actions on record across
1 court case:
CA2202.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA2202 | 1 | 1911-02-04 | 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 9 years on record)
In a median year this structure has a recorded diversion of 243 AF. Its most recent year on record, 2007, came in at 0 AF — 0% of that, and 1st lowest of the 9 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) |
|---|---|---|---|---|
| 1912 | 492 | 7th lowest of 9 · 202% of median | 125 | 2.0 |
| 1926 | 243 | 5th lowest of 9 · 100% of median | 245 | 0.5 |
| 1927 | 726 | 9th lowest of 9 · 299% of median | 245 | 1.7 |
| 1947 | 700 | 8th lowest of 9 · 288% of median | 133 | 4.0 |
| 1948 | 119 | 3rd lowest of 9 · 49% of median | 33 | 2.0 |
| 1970 | 442 | 6th lowest of 9 · 182% of median | 140 | 4.5 |
| 1972 | 194 | 4th lowest of 9 · 80% of median | 96 | 1.5 |
| 2006 | 0 | 1st lowest of 9 · 0% of median | 1 | 0.0 |
| 2007 | 0 | 1st lowest of 9 · 0% of median | 10 | 0.0 |
Trends for this structure
Recorded use is falling over its last 9 recorded years (-5 AF/yr, Mann-Kendall p=0.036).
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 | 1 right(s), seniority decoded |
| diversion record | present | 1028 measured days; currency unknown (no data-coverage date to compare against) |
| record continuity | sparse | 5% of the irrigation seasons in 1912-2007 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.