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HIGHLAND CANAL

Structure dossier · WDID 1700615 · 1 · PURGATOIRE RIVER · DWR record

Where this page's figures come from

Generated 2026-08-27 20:40 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.

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 1866-05-31 — 2nd most senior of the 1909 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: 1700542 (1861-12-31). Immediately behind: 1700541 (1867-09-21).

Decreed rights (3)

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
5995.01866-05-311903-08-10 16.60.0 CSTOIRRAUG
12510.01884-04-011903-08-10 7.40.0 CSTOIRRAUG
21609.01909-03-011922-08-30 38.50.0 CSTOIRRAUG 120

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 756 AF. Its most recent year on record, 2024, came in at 33 AF — 4% of that, and 1st 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)
2006 856 13th lowest of 15 · 113% of median — 138 3.9
2007 836 12th lowest of 15 · 111% of median — 123 4.0
2008 829 11th lowest of 15 · 110% of median — 139 6.7
2009 920 14th lowest of 15 · 122% of median — 134 4.2
2010 943 15th lowest of 15 · 125% of median — 138 4.6
2011 519 6th lowest of 15 · 69% of median — 134 4.5
2012 253 3rd lowest of 15 · 34% of median — 54 4.3
2013 358 5th lowest of 15 · 47% of median — 52 4.4
2014 756 8th lowest of 15 · 100% of median — 118 6.1
2015 268 4th lowest of 15 · 35% of median — 50 4.5
2016 772 9th lowest of 15 · 102% of median — 116 4.8
2017 796 10th lowest of 15 · 105% of median — 113 4.1
2020 224 2nd lowest of 15 · 30% of median — 67 4.9
2021 565 7th lowest of 15 · 75% of median — 112 23.9
2024 33 1st lowest of 15 · 4% of median — 34 1.8

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.