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ARCH-TROGILLIO LWR DIV 1

Structure dossier · WDID 2200708 · 1 · CONEJOS RIVER · DWR record

Where this page's figures come from

Generated 2026-08-27 19:17 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 1857-04-01 — 28th most senior of the 1764 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: ARCH-TROGILLIO UPR DIV 1 (1857-04-01). Immediately behind: ARCH-TROGILLIO UPR DIV 2 (1857-04-01).

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
2648.01857-04-011883-10-22 0.00.0 CIRRDOM 19

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 257 AF. Its most recent year on record, 2025, came in at 211 AF — 82% of that, and 5th 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 177 3rd lowest of 15 · 69% of median 51 2.7
2012 248 7th lowest of 15 · 96% of median 70 2.1
2013 146 2nd lowest of 15 · 57% of median 43 2.2
2014 257 8th lowest of 15 · 100% of median 68 2.2
2015 194 4th lowest of 15 · 76% of median 58 2.7
2016 260 10th lowest of 15 · 101% of median 82 2.7
2017 260 10th lowest of 15 · 101% of median 80 2.7
2018 111 1st lowest of 15 · 43% of median 36 2.1
2019 311 13th lowest of 15 · 121% of median 77 2.7
2020 257 8th lowest of 15 · 100% of median 46 3.6
2021 290 12th lowest of 15 · 113% of median 57 3.6
2022 226 6th lowest of 15 · 88% of median 46 3.6
2023 451 15th lowest of 15 · 176% of median 86 3.6
2024 313 14th lowest of 15 · 122% of median 72 3.6
2025 211 5th lowest of 15 · 82% of median 51 3.6

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.