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HORSEFLY DITCH
Structure dossier · WDID 4100656 · 1 · HORSEFLY CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 21:00 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 1889-04-01 — 171st most senior of the 1104 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: FANSHER HORSEFLY NO 1D (1889-04-01). Immediately behind: SILVER PLUME SPRING D (1910-05-01).
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 |
|---|---|---|---|---|---|---|---|
| 33575.14336 | 1889-04-01 | 1954-01-29 | 1.25 | 0.0 | C | IRR | 206 |
Recorded use (last 14 years on record)
In a median year this structure has a recorded diversion of 388 AF. Its most recent year on record, 2019, came in at 36 AF — 9% of that, and 3rd lowest of the 14 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) |
|---|---|---|---|---|
| 1962 | 488 | 10th lowest of 14 · 126% of median | 124 | 2.0 |
| 1963 | 406 | 8th lowest of 14 · 104% of median | 116 | 10.0 |
| 1964 | 371 | 7th lowest of 14 · 96% of median | 113 | 2.0 |
| 1965 | 530 | 11th lowest of 14 · 136% of median | 130 | 3.0 |
| 1966 | 584 | 13th lowest of 14 · 150% of median | 155 | 2.0 |
| 1967 | 327 | 6th lowest of 14 · 84% of median | 140 | 1.5 |
| 1968 | 454 | 9th lowest of 14 · 117% of median | 123 | 2.3 |
| 1969 | 772 | 14th lowest of 14 · 199% of median | 157 | 3.5 |
| 1972 | 11 | 2nd lowest of 14 · 3% of median | 14 | 0.6 |
| 1973 | 87 | 5th lowest of 14 · 22% of median | 42 | 1.1 |
| 1974 | 54 | 4th lowest of 14 · 14% of median | 29 | 1.0 |
| 2006 | 0 | 1st lowest of 14 · 0% of median | 2 | 0.0 |
| 2018 | 583 | 12th lowest of 14 · 150% of median | 149 | 2.0 |
| 2019 | 36 | 3rd lowest of 14 · 9% of median | 14 | 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.