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LONSWAY DITCH

Structure dossier · WDID 6000674 · 1 · SAN MIGUEL RIVER · DWR record

Where this page's figures come from

Generated 2026-08-27 23:21 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 1903-07-01 — 816th most senior of the 2893 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: WEST SEEVERS DITCH (1902-07-01). Immediately behind: GLENCOE DITCH (1903-11-16).

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
30604.195391903-07-011939-11-01 1.50.0 CIRR 253

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 569 AF. Its most recent year on record, 1994, came in at 710 AF — 125% 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)
1980 758 14th lowest of 15 · 133% of median 142 3.5
1981 569 8th lowest of 15 · 100% of median 114 3.0
1982 754 13th lowest of 15 · 132% of median 155 2.5
1983 283 1st lowest of 15 · 50% of median 63 2.5
1984 367 4th lowest of 15 · 64% of median 79 2.5
1985 419 5th lowest of 15 · 74% of median 113 2.5
1986 354 2nd lowest of 15 · 62% of median 121 1.5
1987 366 3rd lowest of 15 · 64% of median 127 1.5
1988 426 6th lowest of 15 · 75% of median 139 2.5
1989 630 10th lowest of 15 · 111% of median 132 2.5
1990 888 15th lowest of 15 · 156% of median 181 2.5
1991 686 11th lowest of 15 · 121% of median 174 2.0
1992 543 7th lowest of 15 · 95% of median 140 2.0
1993 571 9th lowest of 15 · 100% of median 146 2.0
1994 710 12th lowest of 15 · 125% of median 180 2.0

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 2424 measured days; currency unknown (no data-coverage date to compare against)
record continuity patchy 61% of the irrigation seasons in 1976-1994 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.