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WILLIAMSON DITCH

Structure dossier · WDID 3001267 · 1 · COTTONWOOD GULCH · DWR record

Where this page's figures come from

Generated 2026-08-27 20:28 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (a1c9146) — 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 1902-05-15 — 619th most senior of the 2277 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: PURGATORY WELL NO. 6 (1965-08-15). Immediately behind: HOTTER BROS SPG D NO 1 (1910-12-31).

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
42448.191271902-05-151968-05-03 1.00.0 CIRR 68-2

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 79 AF. Its most recent year on record, 2025, came in at 78 AF — 99% of that, and 7th 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 120 12th lowest of 15 · 152% of median 100 1.1
2012 82 11th lowest of 15 · 104% of median 98 0.8
2013 18 4th lowest of 15 · 23% of median 45 0.4
2014 79 8th lowest of 15 · 100% of median 90 1.1
2015 46 5th lowest of 15 · 58% of median 119 0.4
2016 75 6th lowest of 15 · 95% of median 102 0.8
2017 134 13th lowest of 15 · 170% of median 128 0.8
2018 7 2nd lowest of 15 · 9% of median 42 0.2
2019 80 10th lowest of 15 · 101% of median 131 0.7
2020 14 3rd lowest of 15 · 18% of median 64 0.2
2021 3 1st lowest of 15 · 4% of median 32 0.2
2022 79 8th lowest of 15 · 100% of median 93 1.1
2023 152 15th lowest of 15 · 192% of median 142 0.9
2024 138 14th lowest of 15 · 175% of median 136 0.6
2025 78 7th lowest of 15 · 99% of median 123 0.5

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.