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WILLOW DITCH

Structure dossier · WDID 5300879 · 1 · EGERIA CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 22:54 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (a1c9146) — 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 1902-05-31 — 241st most senior of the 1231 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: MACFARLANE DITCH (1901-06-30). Immediately behind: EGERIA RESERVOIR (1902-10-18).

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
25376.191431902-05-311920-11-15 1.60.0 CIRR 263

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 162 AF. Its most recent year on record, 2024, came in at 162 AF — 100% of that, and 7th 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)
2009 252 12th lowest of 15 · 156% of median 79 1.8
2010 217 11th lowest of 15 · 134% of median 72 2.5
2011 410 14th lowest of 15 · 253% of median 52 4.6
2012 164 9th lowest of 15 · 101% of median 82 1.5
2013 181 10th lowest of 15 · 112% of median 69 1.5
2014 276 13th lowest of 15 · 170% of median 68 3.9
2015 148 5th lowest of 15 · 91% of median 31 2.6
2016 130 4th lowest of 15 · 80% of median 46 1.5
2018 100 3rd lowest of 15 · 62% of median 26 2.1
2019 453 15th lowest of 15 · 280% of median 73 3.2
2020 162 7th lowest of 15 · 100% of median 62 1.5
2021 41 1st lowest of 15 · 25% of median 38 1.5
2022 67 2nd lowest of 15 · 41% of median 63 1.3
2023 152 6th lowest of 15 · 94% of median 57 2.5
2024 162 7th lowest of 15 · 100% of median 61 1.9

How good is our record of it?

Grade B (7/10 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 4032 measured days; currency unknown (no data-coverage date to compare against)
record continuity sparse 38% of the irrigation seasons in 1975-2024 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.