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GREEN MOUNTAIN RESERVOIR
Structure dossier · WDID 3603543 · 3 · BLUE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-27 21:19 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 1935-08-01 — 316th 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: GREEN MTN HYDRO-ELECTRIC (1935-08-01). Immediately behind: GREEN MOUNTAIN RESERVOIR EXCHANGE (1935-08-01).
Decreed rights (6)
| 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 |
|---|---|---|---|---|---|---|---|
| 31258.0 | 1935-08-01 | 1955-10-12 | 160961.0 | 0.0 | A | AUGPWROTH | 4A&74A |
| 38635.0 | 1955-10-12 | 2013-12-31 | 0.0 | 0.0 | A | AUGPWROTH | |
| 50038.49309 | 1985-01-01 | 1987-12-31 | 48238.0 | 106407.0 | A | AUGPWROTH | |
| 57997.0 | 2008-10-15 | 2010-12-31 | 0.0 | 0.0 | A | IRRMUNCOMINDRECFISDOMSTKEVPPWR | |
| 57997.0 | 2008-10-15 | 2010-12-31 | 0.0 | 0.0 | C | IRRMUNCOMINDRECFISDOMSTKEVPPWR | |
| 58804.58705 | 2010-09-23 | 2011-12-31 | 0.0 | 0.0 | A | RECAUGMINPWROTH |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 97,987 AF. Its most recent year on record, 2024, came in at 93,675 AF — 96% of that, and 4th lowest of the 15 years with a recorded volume.
This structure records both diversions and reservoir releases — they are separate water movements and are accounted separately below.
| 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 | Released (AF) | Days recorded | Peak (cfs) |
|---|---|---|---|---|---|
| 2010 | 84,623 | 3rd lowest of 15 · 86% of median | 64,367 | 365 | 2195.6 |
| 2011 | 117,656 | 14th lowest of 15 · 120% of median | 90,547 | 365 | 2016.5 |
| 2012 | 38,458 | 1st lowest of 15 · 39% of median | 139,178 | 366 | 449.6 |
| 2013 | 99,949 | 9th lowest of 15 · 102% of median | 126,164 | 365 | 1308.7 |
| 2014 | 106,978 | 13th lowest of 15 · 109% of median | 184,775 | 365 | 1546.1 |
| 2015 | 97,609 | 6th lowest of 15 · 100% of median | 180,964 | 365 | 1545.3 |
| 2016 | 105,190 | 12th lowest of 15 · 107% of median | 92,786 | 306 | 1753.2 |
| 2017 | 101,313 | 10th lowest of 15 · 103% of median | 95,033 | 365 | 1668.9 |
| 2018 | 94,716 | 5th lowest of 15 · 97% of median | 110,454 | 365 | 1416.3 |
| 2019 | 118,655 | 15th lowest of 15 · 121% of median | 96,703 | 306 | 1987.6 |
| 2020 | 97,749 | 7th lowest of 15 · 100% of median | 90,447 | 335 | 1757.6 |
| 2021 | 62,142 | 2nd lowest of 15 · 63% of median | 105,673 | 365 | 904.1 |
| 2022 | 102,100 | 11th lowest of 15 · 104% of median | 90,447 | 365 | 1766.5 |
| 2023 | 97,987 | 8th lowest of 15 · 100% of median | 74,790 | 365 | 1250.1 |
| 2024 | 93,675 | 4th lowest of 15 · 96% of median | 95,388 | 305 | 1521.5 |
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.