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GRAND VALLEY PROJECT

Structure dossier · WDID 7200646 · 1 · COLORADO RIVER · DWR record

Where this page's figures come from

Generated 2026-08-27 20:29 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (a1c9146) — 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 1889-10-01 — 165th most senior of the 2166 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: GRAND VALLEY CANAL (1882-08-22). Immediately behind: PALISADE IRR DIST CANAL (1889-10-01).

Decreed rights (7)

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. UnitsUsesWhat the court said this water may be used for -- irrigation, municipal supply, augmentation and so on.Case
22729.145191889-10-011912-07-22 80.00.0 CIRR
22729.185361900-10-011912-07-22 10.20.0 CIRR
22729.195441903-07-061912-07-22 0.00.0 CIRR
22729.211161907-10-251912-07-22 450.00.0 CIRRIND
22729.212411908-02-271912-07-22 730.00.0 CIRR
30895.212411908-02-271941-07-25 1020.00.0 CCOMDOM
30895.249881918-06-011941-07-25 23.50.0 CIRR

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 662,105 AF. Its most recent year on record, 2024, came in at 617,818 AF — 93% of that, and 6th 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.

YearDiverted (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 recordReleased (AF)Days recordedPeak (cfs)
2010 802,331 15th lowest of 15 · 121% of median — 365 1670.0
2011 700,051 9th lowest of 15 · 106% of median — 365 1590.0
2012 705,194 10th lowest of 15 · 106% of median — 366 1755.0
2013 720,027 11th lowest of 15 · 109% of median — 365 1929.1
2014 801,230 14th lowest of 15 · 121% of median — 365 1580.0
2015 792,911 13th lowest of 15 · 120% of median — 365 1610.0
2016 722,651 12th lowest of 15 · 109% of median — 366 1602.0
2017 662,105 8th lowest of 15 · 100% of median 2,864 365 1627.4
2018 613,955 5th lowest of 15 · 93% of median — 365 1580.0
2019 654,607 7th lowest of 15 · 99% of median — 365 1590.0
2020 608,296 3rd lowest of 15 · 92% of median — 366 1570.0
2021 609,362 4th lowest of 15 · 92% of median — 365 1590.0
2022 513,910 1st lowest of 15 · 78% of median — 365 1530.3
2023 528,210 2nd lowest of 15 · 80% of median — 365 1344.2
2024 617,818 6th lowest of 15 · 93% of median — 305 1392.4

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.