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CORNISH PLAINS RES

Structure dossier · WDID 0103009 · 3 · CACHE LA POUDRE RIVER · DWR record

Where this page's figures come from

Generated 2026-08-27 21:16 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 1870-10-25 — 9th most senior of the 7705 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: GREELEY WELL 7-7109 (1870-04-01). Immediately behind: 70 RANCH STORAGE RESERVOIR (1870-10-25).

Decreed rights (8)

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
7603.01870-10-251882-04-11 0.00.0 CMUNAUG
7928.01871-09-151882-04-11 0.00.0 CMUNAUG
9080.01874-11-101882-04-11 0.00.0 CMUNAUG
10120.01877-09-151882-04-11 0.00.0 CMUNAUG
45655.454371974-05-271975-12-31 0.00.0 CMUNAUG
55412.02001-09-172001-12-31 2470.0530.0 AIRRCOMINDRECFISAUGRCHWLD
56247.55872002-12-192004-12-31 700.0700.0 AIRRCOMINDRECFISAUGRCHWLD
56611.02004-12-292004-12-31 455.0455.0 AIRRCOMINDRECFISAUGRCHWLD

Recorded use (last 11 years on record)

In a median year this structure has a recorded diversion of 5,175 AF. Its most recent year on record, 2024, came in at 3,083 AF — 60% of that, and 4th lowest of the 11 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)
2007 3,067 3rd lowest of 11 · 59% of median — 65 94.8
2011 2,648 2nd lowest of 11 · 51% of median — 73 44.2
2014 4,813 5th lowest of 11 · 93% of median — 154 97.8
2015 6,692 10th lowest of 11 · 129% of median — 245 135.5
2016 5,791 7th lowest of 11 · 112% of median — 256 88.2
2017 8,521 11th lowest of 11 · 165% of median — 344 94.6
2018 6,021 8th lowest of 11 · 116% of median — 351 49.3
2019 6,436 9th lowest of 11 · 124% of median 491 306 70.6
2020 2,204 1st lowest of 11 · 43% of median 1,718 184 39.1
2023 5,175 6th lowest of 11 · 100% of median 368 64 58.0
2024 3,083 4th lowest of 11 · 60% of median 1,452 64 31.8

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.