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WESTALL DITCH

Structure dossier · WDID 1200853 · 1 · FOURMILE CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 20:32 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 1875-06-30 — 195th most senior of the 1967 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: TERRY DITCH (1875-06-30). Immediately behind: SOUTH DITCH (1875-07-01).

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
9312.01875-06-301894-02-03 0.50.0 CIRR 158
13665.01887-05-311894-02-03 0.50.0 CIRR 348
14396.01889-05-311894-02-03 0.50.0 CIRR 378

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 111 AF. Its most recent year on record, 2025, came in at 55 AF — 50% 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)
2010 484 15th lowest of 15 · 436% of median 142 1.8
2011 113 9th lowest of 15 · 102% of median 58 1.5
2013 115 10th lowest of 15 · 104% of median 62 1.0
2014 146 11th lowest of 15 · 132% of median 58 1.5
2015 42 6th lowest of 15 · 38% of median 67 0.5
2016 111 8th lowest of 15 · 100% of median 101 1.0
2017 147 12th lowest of 15 · 132% of median 83 2.1
2018 0 1st lowest of 15 · 0% of median 18 0.0
2019 25 5th lowest of 15 · 22% of median 46 1.4
2020 0 1st lowest of 15 · 0% of median 22 0.0
2021 6 4th lowest of 15 · 5% of median 10 1.0
2022 2 3rd lowest of 15 · 2% of median 9 0.5
2023 200 14th lowest of 15 · 180% of median 148 1.0
2024 149 13th lowest of 15 · 134% of median 131 0.7
2025 55 7th lowest of 15 · 50% of median 60 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.