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Mackay Reservoir Fishing and Stocking

Custer County, Idaho. The Idaho Department of Fish and Game lists 10 stockings here in the latest year of its data (Rainbow Trout), the most recent on Jun 9, 2026. Stocked in March, May, June, July and October in two or more years.

2026 Stocking

DateSpeciesFishSize
Jun 9, 2026Rainbow Trout2,075Catchable (12-14 inches)
May 22, 2026Rainbow Trout168,042Fingerling (3-6 inches)
May 19, 2026Rainbow Trout4,218Catchable (12-14 inches)
May 11, 2026Rainbow Trout4,195Catchable (6+ inches)
May 1, 2026Rainbow Trout1,200Adults
Jan 22, 2026Rainbow Trout62Adults
Jan 15, 2026Rainbow Trout460Adults
Jan 13, 2026Rainbow Trout272Adults

2025 Stocking

DateSpeciesFishSize
Dec 4, 2025Rainbow Trout169Adults
Nov 7, 2025Rainbow Trout2,690Catchable (6+ inches)
Oct 2, 2025Rainbow Trout7,134Fry (0-3 inches)
Jul 8, 2025Cutthroat Trout - Yellowstone14,660Fry (0-3 inches)
Jun 13, 2025Rainbow Trout174,073Fry (0-3 inches)
Jun 4, 2025Rainbow Trout4,216Catchable (12-14 inches)
May 14, 2025Rainbow Trout4,200Catchable (12-14 inches)
Apr 29, 2025Rainbow Trout562Adults
Apr 23, 2025Rainbow Trout41,113Fingerling (3-6 inches)
Apr 17, 2025Rainbow Trout690Adults
Mar 28, 2025Rainbow Trout4,171Catchable (6+ inches)

2024 Stocking

DateSpeciesFishSize
Oct 24, 2024Rainbow Trout111Adults
Sep 12, 2024Rainbow Trout20,016Fingerling (3-6 inches)
Jul 18, 2024Rainbow Trout157,123Fingerling (3-6 inches)
Jul 11, 2024Rainbow Trout154Catchable (12-14 inches)
May 9, 2024Rainbow Trout2,306Catchable (12-14 inches)
Mar 25, 2024Rainbow Trout400Adults
Mar 18, 2024Rainbow Trout400Adults
Mar 15, 2024Rainbow Trout401Adults
Mar 12, 2024Rainbow Trout400Adults
Mar 11, 2024Rainbow Trout360Adults

Other Stocked Waters in Custer 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 “Mackay 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.