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KEYSTONE-ARAPAHOE BASIN DEPLETION REACH
Structure dossier · WDID 3609021 · R · SNAKE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 19:16 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 in line
Priority 1984-01-23 — 762nd 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: KEYSTONE-ARAPAHOE LMT EXCHANGE (1984-01-23). Immediately behind: SILVERTHORNE WELLS EXCHANGE (1984-03-06).
Decreed rights (5)
| 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 |
|---|---|---|---|---|---|---|---|
| 48965.0 | 1984-01-23 | 1955-10-12 | 0.0 | 0.0 | A | SNO | , 4A&74A |
| 48965.0 | 1984-01-23 | 1955-10-12 | 0.0 | 0.0 | C | SNO | , 4A&74A |
| 52067.0 | 1992-07-21 | 1972-05-30 | 0.0 | 0.0 | A | SNO | |
| 52067.0 | 1992-07-21 | 1972-05-30 | 0.0 | 0.0 | C | SNO | |
| 53935.0 | 1997-09-01 | 2002-06-28 | 0.0 | 0.0 | A | COMDOMSNO |
Recorded use (last 12 years on record)
In a median year this structure has a recorded diversion of 480 AF. Its most recent year on record, 2024, came in at 66 AF — 14% of that, and 3rd lowest of the 12 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) |
|---|---|---|---|---|
| 2013 | 24 | 1st lowest of 12 · 5% of median | 37 | 3.5 |
| 2014 | 551 | 7th lowest of 12 · 115% of median | 61 | 8.2 |
| 2015 | 70 | 4th lowest of 12 · 15% of median | 23 | 4.8 |
| 2016 | 558 | 8th lowest of 12 · 116% of median | 61 | 10.3 |
| 2017 | 410 | 6th lowest of 12 · 85% of median | 140 | 6.9 |
| 2018 | 624 | 10th lowest of 12 · 130% of median | 153 | 6.8 |
| 2019 | 894 | 12th lowest of 12 · 186% of median | 365 | 10.4 |
| 2020 | 114 | 5th lowest of 12 · 24% of median | 366 | 6.9 |
| 2021 | 725 | 11th lowest of 12 · 151% of median | 365 | 12.2 |
| 2022 | 573 | 9th lowest of 12 · 119% of median | 365 | 8.3 |
| 2023 | 35 | 2nd lowest of 12 · 7% of median | 122 | 1.7 |
| 2024 | 66 | 3rd lowest of 12 · 14% of median | 61 | 7.2 |
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.