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REIGAN DITCH NO 1

Structure dossier · WDID 4300897 · 1 · DRY FORK PICEANCE CREEK · DWR record

Where this page's figures come from

Generated 2026-08-28 00:41 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.

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 1888-05-01 — 108th most senior of the 3293 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: UPPER DITCH (1888-04-15). Immediately behind: REIGAN DITCH NO 2 (1888-05-02).

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
14001.01888-05-011889-05-10 1.50.0 CIRR 94

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 0 AF. Its most recent year on record, 2018, came in at 0 AF — —% 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)
1985 259 14th lowest of 15 · —% of median 90 1.5
1986 443 15th lowest of 15 · —% of median 150 1.5
1987 21 9th lowest of 15 · —% of median 10 1.5
1988 30 10th lowest of 15 · —% of median 15 1.5
1992 70 12th lowest of 15 · —% of median 51 0.8
1994 0 1st lowest of 15 · —% of median 5 0.0
1996 0 1st lowest of 15 · —% of median 8 0.0
1997 0 1st lowest of 15 · —% of median 7 0.0
1998 0 1st lowest of 15 · —% of median 9 0.0
1999 85 13th lowest of 15 · —% of median 57 1.0
2000 0 1st lowest of 15 · —% of median 9 0.0
2001 33 11th lowest of 15 · —% of median 32 0.8
2002 0 1st lowest of 15 · —% of median 6 0.0
2016 0 1st lowest of 15 · —% of median 3 0.0
2018 0 1st lowest of 15 · —% of median 1 0.0

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 1325 measured days; currency unknown (no data-coverage date to compare against)
record continuity sparse 12% of the irrigation seasons in 1965-2018 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.