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COWAN GULCH DITCH

Structure dossier · WDID 4000965 · 1 · NORTH FORK GUNNISON RIVE · DWR record

Where this page's figures come from

Generated 2026-08-27 19:49 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 1905-05-15 — 2075th most senior of the 4661 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: ERIKSON DITCH (1905-05-05). Immediately behind: IRVING DITCH NO 2 (1910-06-10).

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
41668.202231905-05-151969-08-11 0.250.0 CIRR L3

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 31 AF. Its most recent year on record, 2024, came in at 44 AF — 142% of that, and 10th 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)
2007 19 5th lowest of 15 · 61% of median 107 0.1
2008 31 8th lowest of 15 · 100% of median 99 0.2
2009 17 4th lowest of 15 · 55% of median 85 0.1
2010 25 6th lowest of 15 · 81% of median 111 0.2
2011 31 8th lowest of 15 · 100% of median 33 1.0
2012 7 2nd lowest of 15 · 23% of median 67 0.1
2013 72 11th lowest of 15 · 232% of median 154 0.3
2014 127 15th lowest of 15 · 410% of median 177 0.5
2015 96 13th lowest of 15 · 310% of median 183 0.5
2016 89 12th lowest of 15 · 287% of median 165 0.3
2017 103 14th lowest of 15 · 332% of median 140 0.5
2019 8 3rd lowest of 15 · 26% of median 47 0.1
2020 29 7th lowest of 15 · 94% of median 133 0.2
2023 0 1st lowest of 15 · 0% of median 2 0.0
2024 44 10th lowest of 15 · 142% of median 90 0.2

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.