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O'HAVER RESERVOIR

Structure dossier · WDID 1103921 · 3 · GRAYS CREEK · DWR record

Where this page's figures come from

Generated 2026-08-27 20:58 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 1869-04-30 — 66th most senior of the 1489 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: MURRAY DITCH (1869-04-30). Immediately behind: MUNDLEIN DITCH NO 1 (1869-11-30).

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
7060.01869-04-301890-06-19 0.00.0 CSTOAUG 28
48464.01982-09-091982-12-31 193.00.0 AIRRMUNINDRECAUG
48555.01982-12-091982-12-31 0.00.0 AMUN
57610.02007-09-242007-12-31 0.00.0 ASTO
57610.02007-09-242007-12-31 0.00.0 CSTO
58401.02009-11-232009-12-31 0.00.0 ASTOMUN

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 19 AF. Its most recent year on record, 2023, came in at 0 AF — 0% 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)
2004 30 11th lowest of 15 · 158% of median — 2 15.1
2009 31 12th lowest of 15 · 163% of median — 13 3.8
2010 5 2nd lowest of 15 · 26% of median — 8 0.9
2011 50 13th lowest of 15 · 263% of median — 23 5.0
2012 74 15th lowest of 15 · 390% of median 46 7 23.2
2013 9 3rd lowest of 15 · 47% of median — 67 3.0
2014 19 8th lowest of 15 · 100% of median — 304 0.1
2015 71 14th lowest of 15 · 374% of median — 214 0.8
2016 18 7th lowest of 15 · 95% of median — 200 0.2
2018 17 6th lowest of 15 · 90% of median — 175 0.1
2019 24 10th lowest of 15 · 126% of median — 142 0.1
2020 16 5th lowest of 15 · 84% of median — 149 1.3
2021 21 9th lowest of 15 · 110% of median — 245 0.1
2022 10 4th lowest of 15 · 53% of median — 365 0.1
2023 0 1st lowest of 15 · 0% of median — 304 0.0

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.