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UNDERHILL ATKINSON DITCH

Structure dossier · WDID 7200917 · 1 · GROVE CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 20:38 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 1885-06-01 — 182nd most senior of the 2166 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: LITTLE CREEK DITCH (1889-04-01). Immediately behind: MASQUATO DITCH (1886-01-01).

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
22995.129361885-06-011916-06-01 0.7920.0 CIRR

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 197 AF. Its most recent year on record, 2024, came in at 223 AF — 113% of that, and 12th 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)
2005 274 14th lowest of 15 · 139% of median 185 0.9
2006 204 10th lowest of 15 · 104% of median 142 1.2
2007 278 15th lowest of 15 · 141% of median 188 0.8
2008 197 8th lowest of 15 · 100% of median 128 1.0
2009 211 11th lowest of 15 · 107% of median 123 1.2
2010 45 1st lowest of 15 · 23% of median 92 0.2
2012 99 2nd lowest of 15 · 50% of median 200 0.2
2015 225 13th lowest of 15 · 114% of median 164 0.8
2016 201 9th lowest of 15 · 102% of median 184 0.8
2017 185 7th lowest of 15 · 94% of median 125 1.0
2018 148 4th lowest of 15 · 75% of median 143 0.8
2019 165 5th lowest of 15 · 84% of median 131 1.0
2020 174 6th lowest of 15 · 88% of median 170 0.8
2021 105 3rd lowest of 15 · 53% of median 139 0.8
2024 223 12th lowest of 15 · 113% of median 164 0.8

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.