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WASSEN D
Structure dossier · WDID 2000894 · 1 · WILLOW CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 21:01 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 1879-05-31 — 166th most senior of the 8016 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: W1253 WELL NO 03 (1879-03-31). Immediately behind: CHARLESWORTH D 1R (1879-06-01).
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 |
|---|---|---|---|---|---|---|---|
| 10743.0 | 1879-05-31 | 1896-05-01 | 6.0 | 0.0 | C | IRR | 169 |
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 1,580 AF. Its most recent year on record, 2025, came in at 1,818 AF — 115% of that, and 13th 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) |
|---|---|---|---|---|
| 2011 | 1,288 | 2nd lowest of 15 · 82% of median | 149 | 6.0 |
| 2012 | 1,580 | 8th lowest of 15 · 100% of median | 208 | 6.0 |
| 2013 | 1,533 | 7th lowest of 15 · 97% of median | 192 | 5.9 |
| 2014 | 1,647 | 9th lowest of 15 · 104% of median | 215 | 6.0 |
| 2015 | 1,516 | 6th lowest of 15 · 96% of median | 210 | 6.0 |
| 2016 | 1,914 | 15th lowest of 15 · 121% of median | 203 | 5.9 |
| 2017 | 1,772 | 11th lowest of 15 · 112% of median | 181 | 6.3 |
| 2018 | 888 | 1st lowest of 15 · 56% of median | 111 | 5.7 |
| 2019 | 1,481 | 5th lowest of 15 · 94% of median | 163 | 6.0 |
| 2020 | 1,456 | 4th lowest of 15 · 92% of median | 157 | 6.0 |
| 2021 | 1,319 | 3rd lowest of 15 · 84% of median | 133 | 6.5 |
| 2022 | 1,684 | 10th lowest of 15 · 107% of median | 215 | 6.0 |
| 2023 | 1,804 | 12th lowest of 15 · 114% of median | 215 | 5.8 |
| 2024 | 1,901 | 14th lowest of 15 · 120% of median | 203 | 6.0 |
| 2025 | 1,818 | 13th lowest of 15 · 115% of median | 187 | 6.0 |
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.