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RILEY DITCH \ UPPER HUERFANO NO 1
Structure dossier · WDID 7900593 · 1 · HUERFANO RIVER · 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 1897-03-15 — 161st most senior of the 930 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: HALLOWAY RESERVOIR DITCH (1895-05-31). Immediately behind: J D MONTEZ RESERVOIR NO 5 (1899-12-31).
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. | Units | UsesWhat the court said this water may be used for -- irrigation, municipal supply, augmentation and so on. | Case |
|---|---|---|---|---|---|---|---|
| 18915.17241 | 1897-03-15 | 1921-10-03 | 4.0 | 0.0 | C | IRR | 286.25 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 0 AF. Its most recent year on record, 2025, came in at 0 AF — —% of that, and 1st lowest of the 15 years with a recorded volume.
| Year | Diverted (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 record | Days recorded | Peak (cfs) |
|---|---|---|---|---|
| 2008 | 0 | 1st lowest of 15 · —% of median | 23 | 0.0 |
| 2009 | 0 | 1st lowest of 15 · —% of median | 24 | 0.0 |
| 2010 | 0 | 1st lowest of 15 · —% of median | 18 | 0.0 |
| 2011 | 0 | 1st lowest of 15 · —% of median | 24 | 0.0 |
| 2012 | 0 | 1st lowest of 15 · —% of median | 11 | 0.0 |
| 2013 | 0 | 1st lowest of 15 · —% of median | 15 | 0.0 |
| 2014 | 0 | 1st lowest of 15 · —% of median | 5 | 0.0 |
| 2016 | 110 | 13th lowest of 15 · —% of median | 36 | 1.9 |
| 2017 | 448 | 15th lowest of 15 · —% of median | 139 | 5.9 |
| 2020 | 0 | 1st lowest of 15 · —% of median | 23 | 0.0 |
| 2021 | 107 | 12th lowest of 15 · —% of median | 75 | 1.0 |
| 2022 | 0 | 1st lowest of 15 · —% of median | 3 | 0.0 |
| 2023 | 0 | 1st lowest of 15 · —% of median | 8 | 0.0 |
| 2024 | 131 | 14th lowest of 15 · —% of median | 38 | 2.0 |
| 2025 | 0 | 1st lowest of 15 · —% of median | 4 | 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.