Grasmere Reservoir Fishing and Stocking
Owyhee County, Idaho. The Idaho Department of Fish and Game lists 2 stockings here in the latest year of its data (Cutthroat Trout - Lahontan), the most recent on Oct 9, 2026. Stocked in October in two or more years.
2026 Stocking
| Date | Species | Fish | Size |
|---|---|---|---|
| Oct 9, 2026 | Cutthroat Trout - Lahontan | 6,263 | Fingerling (3-6 inches) |
| Oct 8, 2026 | Cutthroat Trout - Lahontan | 21,474 | Fingerling (3-6 inches) |
2025 Stocking
| Date | Species | Fish | Size |
|---|---|---|---|
| Oct 2, 2025 | Rainbow Trout | 4,480 | Catchable (6+ inches) |
| Oct 1, 2025 | Rainbow Trout | 6,183 | Catchable (6+ inches) |
2024 Stocking
| Date | Species | Fish | Size |
|---|---|---|---|
| Oct 4, 2024 | Cutthroat Trout - Lahontan | 19,936 | Fingerling (3-6 inches) |
Other Stocked Waters in Owyhee County
About This Data
Every row comes from the stocking information published by the Idaho Department of Fish and Game, checked Oct 20, 2026. The agency lists this water as “Grasmere Reservoir”. Species and sizes are given as the agency names them; a dash means the agency does not say.
More for Idaho Anglers
Stocking dates and places can change without notice; check with the agency before a trip. ReelTourney is not affiliated with the Idaho Department of Fish and Game.