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EIGHT MILE DITCH NO 1
Structure dossier · WDID 5100617 · 1 · EIGHTMILE CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 20:35 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.
Which of its rights get called out?
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 1880-12-31 — 8th most senior of the 2208 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: MCQUEARY DITCH 6 (1880-06-05). Immediately behind: TILLOTSON WELL NO 1 (1880-12-31).
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 |
|---|---|---|---|---|---|---|---|
| 11323.0 | 1880-12-31 | 1906-08-11 | 0.875 | 0.0 | C | IRR | 7 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 60 AF. Its most recent year on record, 2024, came in at 45 AF — 75% of that, and 5th 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) |
|---|---|---|---|---|
| 1995 | 154 | 13th lowest of 15 · 257% of median | 134 | 1.5 |
| 1996 | 159 | 14th lowest of 15 · 265% of median | 41 | 2.0 |
| 1997 | 100 | 12th lowest of 15 · 167% of median | 62 | 1.5 |
| 1998 | 60 | 8th lowest of 15 · 100% of median | 21 | 1.5 |
| 1999 | 45 | 5th lowest of 15 · 75% of median | 31 | 1.0 |
| 2000 | 61 | 9th lowest of 15 · 102% of median | 32 | 1.0 |
| 2001 | 37 | 4th lowest of 15 · 62% of median | 32 | 0.8 |
| 2004 | 67 | 10th lowest of 15 · 112% of median | 42 | 1.5 |
| 2005 | 82 | 11th lowest of 15 · 137% of median | 47 | 1.2 |
| 2016 | 244 | 15th lowest of 15 · 407% of median | 57 | 3.0 |
| 2020 | 57 | 7th lowest of 15 · 95% of median | 56 | 1.5 |
| 2021 | 24 | 3rd lowest of 15 · 40% of median | 50 | 0.3 |
| 2022 | 19 | 2nd lowest of 15 · 32% of median | 47 | 0.3 |
| 2023 | 7 | 1st lowest of 15 · 12% of median | 13 | 0.5 |
| 2024 | 45 | 5th lowest of 15 · 75% of median | 50 | 1.0 |
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.