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HAY GULCH DITCH

Structure dossier · WDID 3300504 · 1 · LA PLATA RIVER · 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 (f6d7fdc) — 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 1888-02-08 — 153rd most senior of the 364 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: P M DAVIS DITCH (1886-07-24). Immediately behind: GCC RESERVOIR (1888-02-08).

Decreed rights (6)

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
13918.01888-02-081898-01-12 10.470.0 CSTOIRRCOMINDDOMAUG #5
14431.01889-07-051898-01-12 2.00.0 CIRR #9
17544.172971897-05-101915-06-23 3.750.0 CIRR #35
25371.01919-06-191966-03-21 2.00.0 CIRRDOM 65-19
57708.02007-12-312007-12-31 0.01.7 CSTOCOMINDDOMAUG
60538.02015-09-302015-12-31 1.70.0 CSTO

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 4,778 AF. Its most recent year on record, 2025, came in at 3,315 AF — 69% of that, and 1st lowest of the 15 years with a recorded volume.

This structure records both diversions and reservoir releases — they are separate water movements and are accounted separately below.

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 recordReleased (AF)Days recordedPeak (cfs)
2011 5,480 13th lowest of 15 · 115% of median 3 365 18.3
2012 4,781 9th lowest of 15 · 100% of median 186 366 16.8
2013 5,177 11th lowest of 15 · 108% of median 224 365 16.4
2014 5,286 12th lowest of 15 · 111% of median 15 365 16.3
2015 5,885 15th lowest of 15 · 123% of median 17 365 18.0
2016 4,902 10th lowest of 15 · 103% of median 16 366 18.8
2017 5,746 14th lowest of 15 · 120% of median 34 365 17.1
2018 3,826 2nd lowest of 15 · 80% of median 31 365 14.5
2019 4,584 7th lowest of 15 · 96% of median 33 342 18.4
2020 3,831 3rd lowest of 15 · 80% of median 37 366 17.4
2021 3,996 5th lowest of 15 · 84% of median 34 365 13.5
2022 3,969 4th lowest of 15 · 83% of median 37 365 16.5
2023 4,060 6th lowest of 15 · 85% of median 25 365 15.0
2024 4,778 8th lowest of 15 · 100% of median 33 366 16.8
2025 3,315 1st lowest of 15 · 69% of median 32 304 16.5

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.