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COOLEY NO 1 DITCH

Structure dossier · WDID 4500554 · 1 · BALDY CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 21:08 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 1890-04-13 — 87th most senior of the 1378 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: COOLEY NO 3 DITCH (1890-03-25). Immediately behind: COOLEY NO 2 DITCH (1890-07-18).

Decreed rights (3)

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
15804.147131890-04-131893-12-20 2.00.0 CIRRAUG 109B
54056.487371983-06-091998-12-31 0.330.0 CIRR
54786.483591982-05-272000-12-31 1.50.0 CIRR

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 134 AF. Its most recent year on record, 2024, came in at 182 AF — 136% of that, and 13th 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)
2007 90 4th lowest of 15 · 67% of median 59 1.0
2008 154 9th lowest of 15 · 115% of median 58 2.3
2009 154 9th lowest of 15 · 115% of median 58 2.3
2011 134 8th lowest of 15 · 100% of median 39 1.8
2013 162 12th lowest of 15 · 121% of median 27 5.3
2014 294 14th lowest of 15 · 219% of median 57 3.4
2015 354 15th lowest of 15 · 264% of median 89 2.8
2016 158 11th lowest of 15 · 118% of median 46 2.8
2017 59 2nd lowest of 15 · 44% of median 30 1.4
2019 122 7th lowest of 15 · 91% of median 62 1.4
2020 115 6th lowest of 15 · 86% of median 55 1.4
2021 63 3rd lowest of 15 · 47% of median 18 2.4
2022 17 1st lowest of 15 · 13% of median 12 0.9
2023 109 5th lowest of 15 · 81% of median 34 1.8
2024 182 13th lowest of 15 · 136% of median 53 1.8

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.