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QUARRY NO 1 DITCH

Structure dossier · WDID 7100582 · 1 · DOLORES RIVER · DWR record

Where this page's figures come from

Generated 2026-08-27 20:39 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (f6d7fdc) — 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 1882-03-21 — 31st most senior of the 279 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: RED ROCK DITCH (1881-03-21). Immediately behind: KOENIG DITCH (1883-06-01).

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. UnitsUsesWhat the court said this water may be used for -- irrigation, municipal supply, augmentation and so on.Case
15372.117681882-03-211933-12-18 6.50.0 CIRR D-30

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 494 AF. Its most recent year on record, 2025, came in at 494 AF — 100% of that, and 8th lowest of the 15 years with a recorded volume.

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 recordDays recordedPeak (cfs)
2011 738 14th lowest of 15 · 149% of median 116 6.0
2012 439 6th lowest of 15 · 89% of median 118 4.0
2013 715 12th lowest of 15 · 145% of median 119 6.0
2014 274 3rd lowest of 15 · 56% of median 123 2.0
2015 198 1st lowest of 15 · 40% of median 94 1.9
2016 369 5th lowest of 15 · 75% of median 102 3.2
2017 726 13th lowest of 15 · 147% of median 131 6.9
2018 656 10th lowest of 15 · 133% of median 153 3.4
2019 693 11th lowest of 15 · 140% of median 129 6.3
2020 852 15th lowest of 15 · 172% of median 172 5.7
2021 585 9th lowest of 15 · 118% of median 139 5.8
2022 326 4th lowest of 15 · 66% of median 121 2.8
2023 443 7th lowest of 15 · 90% of median 105 6.2
2024 269 2nd lowest of 15 · 54% of median 147 3.7
2025 494 8th lowest of 15 · 100% of median 163 5.4

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.