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LAMAR CANAL

Structure dossier · WDID 6700614 · 1 · ARKANSAS 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 1875-11-30 — 2nd most senior of the 2116 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: JOHN MARTIN RESERVOIR (1871-03-13). Immediately behind: LAMAR FEEDER NO 1 (1875-11-30).

Decreed rights (4)

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
9465.01875-11-301895-07-01 15.750.0 CIRRAUG 3
13457.01886-11-041895-07-01 72.090.0 CIRRAUG 6.5
13620.01887-04-161895-07-01 13.640.0 CIRRAUG 7.5
14807.01890-07-161895-07-01 184.270.0 CIRRAUG 13

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 38,603 AF. Its most recent year on record, 2025, came in at 43,140 AF — 112% of that, and 9th 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)
2011 38,603 8th lowest of 15 · 100% of median — 365 252.9
2012 13,035 1st lowest of 15 · 34% of median — 306 95.2
2013 35,346 6th lowest of 15 · 92% of median — 365 230.2
2014 46,340 12th lowest of 15 · 120% of median — 365 223.9
2015 59,813 15th lowest of 15 · 155% of median — 302 247.2
2016 33,809 5th lowest of 15 · 88% of median — 304 147.8
2017 33,209 4th lowest of 15 · 86% of median — 306 209.7
2018 48,524 14th lowest of 15 · 126% of median — 334 154.0
2019 43,603 10th lowest of 15 · 113% of median — 236 189.4
2020 33,181 3rd lowest of 15 · 86% of median — 216 168.3
2021 44,597 11th lowest of 15 · 116% of median — 288 377.8
2022 29,577 2nd lowest of 15 · 77% of median 1,223 365 206.6
2023 36,974 7th lowest of 15 · 96% of median — 306 237.0
2024 46,927 13th lowest of 15 · 122% of median — 248 256.5
2025 43,140 9th lowest of 15 · 112% of median — 234 144.6

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.