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RIEVA DITCH

Structure dossier · WDID 7100586 · 1 · WEST DOLORES RIVER · DWR record

Where this page's figures come from

Generated 2026-08-27 21:22 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (f6d7fdc) — 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 1900-03-21 — 56th most senior of the 279 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: PUMP PASTURE WELL (1899-12-31). Immediately behind: RIEVA DITCH AP2 (1900-03-21).

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
18342.01900-03-211933-12-18 5.00.0 CIRR D-41

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 112 AF. Its most recent year on record, 2025, came in at 172 AF — 154% of that, and 12th 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)
2011 112 8th lowest of 15 · 100% of median — 101 1.2
2012 49 3rd lowest of 15 · 44% of median — 148 0.5
2013 155 9th lowest of 15 · 138% of median 40 155 1.1
2014 19 1st lowest of 15 · 17% of median 41 49 0.3
2015 37 2nd lowest of 15 · 33% of median 35 95 0.3
2016 51 4th lowest of 15 · 46% of median 24 87 0.6
2017 81 7th lowest of 15 · 72% of median 27 125 0.6
2018 167 11th lowest of 15 · 149% of median 30 181 1.1
2019 165 10th lowest of 15 · 147% of median 3 87 1.4
2020 211 14th lowest of 15 · 188% of median 39 167 1.2
2021 79 5th lowest of 15 · 70% of median 18 158 0.5
2022 174 13th lowest of 15 · 155% of median 23 147 1.4
2023 79 5th lowest of 15 · 70% of median 9 152 0.6
2024 255 15th lowest of 15 · 228% of median 0 142 1.9
2025 172 12th lowest of 15 · 154% of median 12 194 0.9

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.