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A T ROBB DITCH

Structure dossier · WDID 3400500 · 1 · WEBER CANYON · DWR record

Where this page's figures come from

Generated 2026-08-27 22:29 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (f6d7fdc) — 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 1898-12-31 — 352nd most senior of the 495 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: A T ROBB NORTH DITCH (1885-12-31). Immediately behind: DOERFER DITCH (1900-12-31).

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
30667.178971898-12-311963-03-22 2.50.0 CIRRDOM 62-21

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 164 AF. Its most recent year on record, 2003, came in at 257 AF — 157% 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)
1988 168 9th lowest of 15 · 102% of median 120 1.0
1989 134 5th lowest of 15 · 82% of median 138 0.6
1990 164 8th lowest of 15 · 100% of median 134 0.8
1991 305 14th lowest of 15 · 186% of median 96 2.0
1992 231 11th lowest of 15 · 141% of median 132 1.3
1993 177 10th lowest of 15 · 108% of median 105 1.0
1994 106 2nd lowest of 15 · 65% of median 99 0.7
1995 153 7th lowest of 15 · 93% of median 134 0.7
1996 146 6th lowest of 15 · 89% of median 122 0.7
1997 125 4th lowest of 15 · 76% of median 103 0.7
1998 289 13th lowest of 15 · 176% of median 147 1.8
1999 318 15th lowest of 15 · 194% of median 112 2.0
2000 111 3rd lowest of 15 · 68% of median 119 0.8
2001 54 1st lowest of 15 · 33% of median 91 0.3
2003 257 12th lowest of 15 · 157% of median 162 1.0

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 2672 measured days; currency unknown (no data-coverage date to compare against)
record continuity patchy 44% of the irrigation seasons in 1975-2003 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.