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CASTLE NO 1 DITCH

Structure dossier · WDID 3700534 · 1 · EBY CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 21:12 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 1889-03-15 — 82nd most senior of the 2162 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: SKIFF AND SCHLIFF DITCH (1888-03-15). Immediately behind: CASTLE NO 2 DITCH (1889-03-15).

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
14319.01889-03-151889-12-17 0.00.0 CIRR 74
20427.190831902-04-011907-06-04 6.20.0 CIRR 238
30894.241971916-04-011936-10-03 1.580.0 CIRR 429
30894.268141923-06-011936-10-03 2.640.0 CIRR 453B
54279.535791996-09-101999-08-11 3.00.0 CIRR
58439.578612008-06-012010-12-31 1.3370.0 CSTO

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 116 AF. Its most recent year on record, 2024, came in at 230 AF — 198% of that, and 15th 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)
2010 51 3rd lowest of 15 · 44% of median 108 1.3
2011 179 14th lowest of 15 · 154% of median 169 2.1
2012 68 4th lowest of 15 · 59% of median 174 2.0
2013 143 12th lowest of 15 · 123% of median 176 1.3
2014 114 7th lowest of 15 · 98% of median 168 0.5
2015 122 9th lowest of 15 · 105% of median 136 0.9
2016 89 5th lowest of 15 · 77% of median 130 1.3
2017 152 13th lowest of 15 · 131% of median 149 0.8
2018 45 2nd lowest of 15 · 39% of median 72 0.6
2019 123 10th lowest of 15 · 106% of median 155 0.7
2020 116 8th lowest of 15 · 100% of median 152 0.9
2021 126 11th lowest of 15 · 109% of median 194 0.8
2022 0 1st lowest of 15 · 0% of median 61 0.0
2023 102 6th lowest of 15 · 88% of median 365 0.8
2024 230 15th lowest of 15 · 198% of median 305 2.2

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.