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MATHISON RES
Structure dossier · WDID 0203919 · RESERVOIR · BIG DRY CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 20:38 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (e70d0b5) — every figure regenerates from this named code version and data image.
Current administration
● In priority — no active call senior to this structure's rights affects its district (23 active call(s) checked).
Which of its rights get called out?
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 1965-06-01 — 19964th most senior of the 21881 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: 0800536 (2012-12-18). Immediately behind: THOMPSON RES (1965-06-01).
Decreed rights (2)
| 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 |
|---|---|---|---|---|---|---|---|
| 59535.42155 | 1965-06-01 | 2013-12-31 | 64.8 | 53.52 | A | IRRRECSTKWLD | |
| 59535.42155 | 1965-06-01 | 2013-12-31 | 7.45 | 12.55 | C | IRRRECSTKWLD |
Recorded use (last 9 years on record)
In a median year this structure has a recorded diversion of 129 AF. Its most recent year on record, 2024, came in at 154 AF — 119% of that, and 6th lowest of the 9 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) |
|---|---|---|---|---|
| 2016 | 212 | 7th lowest of 9 · 164% of median | 117 | 3.5 |
| 2017 | 240 | 8th lowest of 9 · 186% of median | 121 | 3.3 |
| 2018 | 282 | 9th lowest of 9 · 219% of median | 84 | 4.4 |
| 2019 | 54 | 3rd lowest of 9 · 42% of median | 18 | 7.4 |
| 2020 | 41 | 2nd lowest of 9 · 32% of median | 25 | 2.1 |
| 2021 | 129 | 5th lowest of 9 · 100% of median | 51 | 2.9 |
| 2022 | 10 | 1st lowest of 9 · 8% of median | 5 | 2.1 |
| 2023 | 126 | 4th lowest of 9 · 98% of median | 33 | 5.7 |
| 2024 | 154 | 6th lowest of 9 · 119% of median | 54 | 4.3 |
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.