Hydrohistorian
← My Water · Print / save as PDF
COPPER MTN WEST LAKE PIPELINE 1
Structure dossier · WDID 3601085 · 7 · WEST TENMILE CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 20:46 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 1941-03-10 — 386th most senior of the 1247 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: WEST TENMILE DITCH (1941-03-10). Immediately behind: COPPER MTN WEST LAKE PIPELINE 2 (1941-03-10).
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 |
|---|---|---|---|---|---|---|---|
| 33306.0 | 1941-03-10 | 1952-03-10 | 1.5 | 0.0 | C | IRR | 353 |
| 48212.44803 | 1972-08-31 | 1982-12-31 | 12.9 | 0.0 | C | RCH |
Recorded use (last 9 years on record)
In a median year this structure has a recorded diversion of 2,894 AF. Its most recent year on record, 2024, came in at 1,731 AF — 60% of that, and 2nd 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) |
|---|---|---|---|---|
| 2016 | 589 | 1st lowest of 9 · 20% of median | 61 | 6.4 |
| 2017 | 3,326 | 7th lowest of 9 · 115% of median | 365 | 12.9 |
| 2018 | 4,286 | 9th lowest of 9 · 148% of median | 365 | 12.9 |
| 2019 | 3,128 | 6th lowest of 9 · 108% of median | 365 | 12.9 |
| 2020 | 3,691 | 8th lowest of 9 · 128% of median | 366 | 12.9 |
| 2021 | 2,726 | 4th lowest of 9 · 94% of median | 365 | 12.9 |
| 2022 | 2,894 | 5th lowest of 9 · 100% of median | 362 | 9.7 |
| 2023 | 1,878 | 3rd lowest of 9 · 65% of median | 365 | 9.7 |
| 2024 | 1,731 | 2nd lowest of 9 · 60% of median | 305 | 6.4 |
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.