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About this water
Upper Stillwater Reservoir is a reservoir in Duchesne County, Utah. State records show it stocked 9 times between 2014 and 2026. The most-stocked species are brook trout, rainbow trout and tiger trout. 23,605 brook trout have gone in across 7 releases.
Stocking history
9 recorded stockings
| Date | Species | Number | Size | Hatchery |
|---|---|---|---|---|
| Aug 12, 2026 | Brook trout | 761 | 5.1" | — |
| Jul 16, 2026 | Brook trout | 7,319 | 3.5" | — |
| Jun 2, 2026 | Brook trout | 3,004 | 3.1" | — |
| Jun 13, 2025 | Brook trout | 3,001 | 3.6" | — |
| Aug 19, 2024 | Brook trout | 3,036 | 4.7" | — |
| Jul 19, 2023 | Brook trout | 3,004 | 3.1" | — |
| Jul 29, 2020 | Brook trout | 3,480 | 3.7" | — |
| Jul 31, 2015 | Tiger trout · Trout, Tiger Bn-F*Bk-M | 5,984 | 4.6" | — |
| May 16, 2014 | Rainbow trout · Rainbow, Eagle Lake | 848 | 9.2" | — |
Stocking records for Upper Stillwater Reservoir published by Utah Division of Wildlife Resources. Stocking does not guarantee fish are present. Check current regulations and access before you go. See the full Utah stocking report.
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