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HORN NO 1 DITCH

Structure dossier · WDID 5200574 · 1 · BIG ALKALI CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 20:31 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.

Which of its rights get called out?

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 1933-04-01 — 174th most senior of the 562 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: HITRLSPGP19 SPRING (1931-12-31). Immediately behind: RAILROAD WTR SUP AT RNGE (1934-06-30).

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
30406.01933-04-011946-08-30 0.640.0 CIRR 182
30455.01933-05-201946-08-30 2.550.0 CIRR 183D

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 112 AF. Its most recent year on record, 2022, came in at 45 AF — 40% of that, and 5th 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)
1994 125 10th lowest of 15 · 112% of median 54 1.4
1995 113 9th lowest of 15 · 101% of median 39 2.0
1996 253 15th lowest of 15 · 226% of median 68 2.3
1997 227 14th lowest of 15 · 203% of median 56 2.1
1998 137 12th lowest of 15 · 122% of median 57 1.4
1999 104 7th lowest of 15 · 93% of median 49 1.2
2000 130 11th lowest of 15 · 116% of median 74 1.2
2001 39 4th lowest of 15 · 35% of median 44 0.6
2008 0 1st lowest of 15 · 0% of median 2 0.0
2014 214 13th lowest of 15 · 191% of median 118 0.9
2016 112 8th lowest of 15 · 100% of median 63 1.1
2017 18 3rd lowest of 15 · 16% of median 27 0.4
2019 69 6th lowest of 15 · 62% of median 63 0.8
2020 12 2nd lowest of 15 · 11% of median 22 0.3
2022 45 5th lowest of 15 · 40% of median 31 1.0

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.