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MCCOY NO 1 DITCH
Structure dossier · WDID 5200596 · 1 · SHEEPHORN CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 21:09 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 1883-05-01 — 1st most senior of the 562 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 behind: WHEELER DITCH (NEW) (1883-05-01).
Decreed rights (2)
| 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 |
|---|---|---|---|---|---|---|---|
| 12174.0 | 1883-05-01 | 1890-11-20 | 1.2 | 0.0 | C | IRR | 2 |
| 29437.19844 | 1904-05-01 | 1946-08-30 | 1.8 | 0.0 | C | IRR | 127 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 328 AF. Its most recent year on record, 1999, came in at 181 AF — 55% of that, and 3rd 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) |
|---|---|---|---|---|
| 1982 | 517 | 10th lowest of 15 · 158% of median | 52 | 5.1 |
| 1983 | 1,420 | 15th lowest of 15 · 433% of median | 170 | 5.1 |
| 1984 | 993 | 13th lowest of 15 · 303% of median | 119 | 5.1 |
| 1985 | 952 | 12th lowest of 15 · 290% of median | 125 | 4.5 |
| 1986 | 897 | 11th lowest of 15 · 274% of median | 140 | 4.2 |
| 1987 | 451 | 9th lowest of 15 · 138% of median | 96 | 2.8 |
| 1988 | 285 | 4th lowest of 15 · 87% of median | 52 | 2.8 |
| 1989 | 289 | 5th lowest of 15 · 88% of median | 53 | 2.8 |
| 1990 | 107 | 1st lowest of 15 · 33% of median | 123 | 1.0 |
| 1991 | 121 | 2nd lowest of 15 · 37% of median | 124 | 1.5 |
| 1993 | 1,120 | 14th lowest of 15 · 342% of median | 145 | 5.1 |
| 1994 | 327 | 7th lowest of 15 · 100% of median | 78 | 3.0 |
| 1995 | 328 | 8th lowest of 15 · 100% of median | 60 | 2.8 |
| 1996 | 309 | 6th lowest of 15 · 94% of median | 79 | 2.0 |
| 1999 | 181 | 3rd lowest of 15 · 55% of median | 62 | 1.5 |
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.