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SUPPLY DITCH

Structure dossier · WDID 4100569 · 1 · UNCOMPAHGRE RIVER · DWR record

Where this page's figures come from

Generated 2026-08-27 21:05 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 1882-05-07 — 31st most senior of the 1104 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: EAST CANAL (1882-05-01). Immediately behind: S E DILLON DITCH (1882-10-01).

Decreed rights (2)

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
11815.01882-05-071890-06-30 2.00.0 CIRR 16, 17
14198.01888-11-141890-06-30 1.310.0 CIRR 65, 95

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 1,260 AF. Its most recent year on record, 2000, came in at 1,260 AF — 100% of that, and 8th 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)
1986 2,741 15th lowest of 15 · 218% of median 173 11.5
1987 1,421 9th lowest of 15 · 113% of median 130 12.1
1988 2,096 13th lowest of 15 · 166% of median 166 13.0
1989 1,655 10th lowest of 15 · 131% of median 149 8.2
1990 2,029 12th lowest of 15 · 161% of median 175 8.5
1991 1,819 11th lowest of 15 · 144% of median 189 12.2
1992 1,119 6th lowest of 15 · 89% of median 168 6.5
1993 2,317 14th lowest of 15 · 184% of median 163 15.8
1994 1,073 5th lowest of 15 · 85% of median 139 7.1
1995 1,165 7th lowest of 15 · 92% of median 186 6.8
1996 866 4th lowest of 15 · 69% of median 156 5.8
1997 815 3rd lowest of 15 · 65% of median 200 4.2
1998 406 1st lowest of 15 · 32% of median 111 2.2
1999 699 2nd lowest of 15 · 56% of median 148 4.8
2000 1,260 8th lowest of 15 · 100% of median 172 6.0

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.