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GRAYBEAL DITCH NO 1

Structure dossier · WDID 1500583 · 1 · SOUTH MUDDY CREEK · DWR record

Where this page's figures come from

Generated 2026-08-28 02:57 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

Location as DWR records it. Faint dots are the neighbouring water; click any to open it.

Which of its rights are out of priority?

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 1871-05-10 — 66th most senior of the 704 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: ASHBAUGH DITCH (1871-05-01). Immediately behind: CARTER DITCH (1871-05-16).

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
7800.01871-05-101895-10-28 0.60.0 CIRR 60.5

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 54 AF. Its most recent year on record, 2025, came in at 139 AF — 257% of that, and 15th 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 25 3rd lowest of 15 · 46% of median 128 0.2
2012 22 2nd lowest of 15 · 41% of median 89 0.2
2013 26 4th lowest of 15 · 48% of median 109 0.2
2014 39 5th lowest of 15 · 72% of median 46 0.6
2015 76 13th lowest of 15 · 141% of median 73 0.6
2016 66 11th lowest of 15 · 122% of median 104 0.4
2017 71 12th lowest of 15 · 132% of median 113 0.4
2018 51 7th lowest of 15 · 94% of median 210 0.2
2019 50 6th lowest of 15 · 93% of median 80 0.6
2020 21 1st lowest of 15 · 39% of median 103 0.2
2021 63 10th lowest of 15 · 117% of median 77 0.6
2022 55 9th lowest of 15 · 102% of median 104 0.6
2023 54 8th lowest of 15 · 100% of median 125 0.6
2024 91 14th lowest of 15 · 168% of median 154 0.6
2025 139 15th lowest of 15 · 257% of median 192 0.6

How good is our record of it?

Grade B (8/10 points) — the components below are the finding; the letter alone is not.

The rubric, component by component
CheckStateDetail
identity complete name, type, and water source all on file
decreed rights on file 1 right(s), seniority decoded
diversion record present 17437 measured days; currency unknown (no data-coverage date to compare against)
record continuity patchy 71% of the irrigation seasons in 1911-2025 carry measured days
published-record stability stable no upstream revisions recorded against this structure

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.