Big Sandwash Reservoir Fishing and Stocking
Duchesne County, Utah. The Utah Division of Wildlife Resources lists 6 stockings here in the latest year of its data (Cutbow (cutthroat-rainbow hybrid), Rainbow Trout and Walleye), the most recent on Oct 28, 2026. Stocked in May and October in two or more years.
2026 Stocking
| Date | Species | Fish | Size |
|---|---|---|---|
| Oct 28, 2026 | Rainbow Trout | 5,499 | 10.62 in |
| Oct 28, 2026 | Cutbow (cutthroat-rainbow hybrid) | 3,740 | 8.46 in |
| Jul 16, 2026 | Walleye | 425 | 4.58 in |
| May 21, 2026 | Rainbow Trout | 400 | 13.1 in |
| May 19, 2026 | Rainbow Trout | 948 | 11.75 in |
| May 18, 2026 | Rainbow Trout | 1,120 | 11.6 in |
2025 Stocking
| Date | Species | Fish | Size |
|---|---|---|---|
| Oct 29, 2025 | Cutbow (cutthroat-rainbow hybrid) | 7,453 | 4.55 in |
| Jun 1, 2025 | Rainbow Trout | 4,913 | 9.6 in |
| May 24, 2025 | Rainbow Trout | 4,960 | 9.69 in |
| May 17, 2025 | Rainbow Trout | 3,169 | 9.54 in |
2024 Stocking
| Date | Species | Fish | Size |
|---|---|---|---|
| Nov 18, 2024 | Rainbow Trout | 1,562 | 4.82 in |
| Nov 18, 2024 | Rainbow Trout | 3,977 | 4.56 in |
| Nov 18, 2024 | Rainbow Trout | 315 | 4.15 in |
| Nov 14, 2024 | Rainbow Trout | 2,000 | 9.79 in |
| May 18, 2024 | Rainbow Trout | 4,960 | 9.41 in |
| May 10, 2024 | Rainbow Trout | 5,136 | 9.4 in |
Other Stocked Waters in Duchesne County
About This Data
Every row comes from the stocking information published by the Utah Division of Wildlife Resources, checked Nov 3, 2026. The agency lists this water as “BIG SANDWASH RES”. Species and sizes are given as the agency names them; a dash means the agency does not say.
More for Utah Anglers
Stocking dates and places can change without notice; check with the agency before a trip. ReelTourney is not affiliated with the Utah Division of Wildlife Resources.