Horsethief Reservoir Fishing and Stocking
Valley County, Idaho. The Idaho Department of Fish and Game lists 8 stockings here in the latest year of its data (Brown Trout, Kokanee and Rainbow Trout), the most recent on Sep 30, 2026. Stocked in April, May, June and September in two or more years.
2026 Stocking
| Date | Species | Fish | Size |
|---|---|---|---|
| Sep 30, 2026 | Rainbow Trout | 33,394 | Fry (0-3 inches) |
| Sep 29, 2026 | Rainbow Trout | 6,990 | Fingerling (3-6 inches) |
| Sep 16, 2026 | Rainbow Trout | 7,526 | Catchable (12-14 inches) |
| Jun 17, 2026 | Kokanee | 10,588 | Fry (0-3 inches) |
| Jun 16, 2026 | Brown Trout | 13,456 | Fingerling (3-6 inches) |
| Jun 9, 2026 | Rainbow Trout | 7,528 | Catchable (6+ inches) |
| Jun 3, 2026 | Rainbow Trout | 9,672 | Fingerling (3-6 inches) |
| Apr 23, 2026 | Rainbow Trout | 14,385 | Catchable (6+ inches) |
2025 Stocking
| Date | Species | Fish | Size |
|---|---|---|---|
| Sep 16, 2025 | Rainbow Trout | 7,560 | Catchable (6+ inches) |
| Jun 23, 2025 | Brown Trout | 10,070 | Fingerling (3-6 inches) |
| Jun 19, 2025 | Kokanee | 10,699 | Fry (0-3 inches) |
| Jun 3, 2025 | Rainbow Trout | 7,710 | Catchable (6+ inches) |
| May 19, 2025 | Rainbow Trout | 7,983 | Catchable (12-14 inches) |
| May 9, 2025 | Rainbow Trout | 52,608 | Fingerling (3-6 inches) |
2024 Stocking
| Date | Species | Fish | Size |
|---|---|---|---|
| Sep 18, 2024 | Rainbow Trout | 7,496 | Catchable (12-14 inches) |
| Jun 20, 2024 | Rainbow Trout | 7,557 | Catchable (12-14 inches) |
| Jun 18, 2024 | Brown Trout | 14,400 | Fingerling (3-6 inches) |
| Jun 13, 2024 | Kokanee | 8,481 | Fry (0-3 inches) |
| May 29, 2024 | Rainbow Trout | 6,400 | Catchable (12-14 inches) |
| May 29, 2024 | Rainbow Trout | 9,815 | Fingerling (3-6 inches) |
| May 28, 2024 | Rainbow Trout | 5,120 | Catchable (12-14 inches) |
| Apr 25, 2024 | Rainbow Trout | 3,560 | Catchable (12-14 inches) |
Other Stocked Waters in Valley 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 “Horsethief 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.