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CANNON DITCH

Structure dossier · WDID 6800516 · 1 · COAL CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 22:53 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 1896-06-01 — 141st most senior of the 1293 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: ARMLIN DITCH (1892-05-13). Immediately behind: PRIVATE DITCH MARTIN (1896-10-10).

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
16954.01896-06-011897-05-15 4.50.0 CIRR 143

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 122 AF. Its most recent year on record, 2025, came in at 34 AF — 28% of that, and 1st 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 170 10th lowest of 15 · 139% of median 159 0.9
2012 104 6th lowest of 15 · 85% of median 156 0.5
2013 62 3rd lowest of 15 · 51% of median 108 0.4
2014 106 7th lowest of 15 · 87% of median 65 1.4
2015 312 14th lowest of 15 · 256% of median 202 1.1
2016 290 12th lowest of 15 · 238% of median 179 2.3
2017 290 12th lowest of 15 · 238% of median 169 1.8
2018 142 9th lowest of 15 · 116% of median 184 0.6
2019 341 15th lowest of 15 · 280% of median 180 2.2
2020 122 8th lowest of 15 · 100% of median 180 0.6
2021 55 2nd lowest of 15 · 45% of median 69 0.6
2022 74 5th lowest of 15 · 61% of median 68 0.9
2023 178 11th lowest of 15 · 146% of median 89 1.7
2024 69 4th lowest of 15 · 57% of median 96 1.2
2025 34 1st lowest of 15 · 28% of median 30 0.8

How good is our record of it?

Grade B (7/10 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 5785 measured days; currency unknown (no data-coverage date to compare against)
record continuity sparse 36% of the irrigation seasons in 1950-2025 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.