ReelTourney

Holter Reservoir Fishing and Stocking

Montana. Montana Fish, Wildlife & Parks lists 18 stockings here in the latest year of its data (Rainbow Trout), the most recent on Sep 24, 2026. Stocked in June and September in two or more years.

2026 Stocking

DateSpeciesFishSize
Sep 24, 2026Rainbow Trout9,8758.32 in
Sep 23, 2026Rainbow Trout10,2068.44 in
Sep 23, 2026Rainbow Trout10,5658.35 in
Sep 23, 2026Rainbow Trout11,4908.4 in
Sep 22, 2026Rainbow Trout9,8548.43 in
Sep 22, 2026Rainbow Trout10,8358.32 in
Sep 22, 2026Rainbow Trout11,0368.25 in
Sep 21, 2026Rainbow Trout9,5008.43 in
Sep 21, 2026Rainbow Trout8,3848.35 in
Sep 21, 2026Rainbow Trout10,0108.39 in
Jun 25, 2026Rainbow Trout14,4757.32 in
Jun 24, 2026Rainbow Trout14,9507.24 in
Jun 24, 2026Rainbow Trout14,0077.4 in
Jun 24, 2026Rainbow Trout14,6007.3 in
Jun 23, 2026Rainbow Trout15,0007.14 in
Jun 23, 2026Rainbow Trout16,5257.01 in
Jun 23, 2026Rainbow Trout14,3337.3 in
Jun 22, 2026Rainbow Trout14,4727.22 in

2025 Stocking

DateSpeciesFishSize
Sep 17, 2025Rainbow Trout12,9507.6 in
Sep 17, 2025Rainbow Trout12,9297.65 in
Sep 16, 2025Rainbow Trout12,1927.65 in
Sep 16, 2025Rainbow Trout11,6407.77 in
Sep 16, 2025Rainbow Trout12,5467.73 in
Sep 15, 2025Rainbow Trout12,2647.63 in
Sep 15, 2025Rainbow Trout12,3127.62 in
Sep 15, 2025Rainbow Trout12,2757.68 in
Jun 30, 2025Rainbow Trout5,6618.8 in
Jun 30, 2025Rainbow Trout8,6888.56 in
Jun 30, 2025Rainbow Trout9,9718.35 in
Jun 27, 2025Rainbow Trout9,6008.28 in
Jun 27, 2025Rainbow Trout9,2398.36 in
Jun 27, 2025Rainbow Trout9,9498.27 in
Jun 26, 2025Rainbow Trout9,7928.23 in
Jun 26, 2025Rainbow Trout1,0838.57 in
Jun 25, 2025Rainbow Trout9,9718.35 in
Jun 25, 2025Rainbow Trout11,2567.85 in

2024 Stocking

DateSpeciesFishSize
Oct 15, 2024Rainbow Trout8,6888.84 in
Oct 11, 2024Rainbow Trout8,8848.9 in
Oct 11, 2024Rainbow Trout9,1158.85 in
Oct 11, 2024Rainbow Trout8,9258.88 in
Oct 10, 2024Rainbow Trout8,9288.76 in
Oct 10, 2024Rainbow Trout8,4968.91 in
Oct 10, 2024Rainbow Trout9,1258.81 in
Oct 9, 2024Rainbow Trout8,7368.82 in
Oct 9, 2024Rainbow Trout9,0098.79 in
Oct 9, 2024Rainbow Trout9,2868.7 in
Jul 5, 2024Rainbow Trout13,9167.68 in
Jul 3, 2024Rainbow Trout12,8667.86 in
Jul 3, 2024Rainbow Trout13,6957.65 in
Jul 2, 2024Rainbow Trout12,2138.02 in
Jul 2, 2024Rainbow Trout12,3007.98 in
Jul 1, 2024Rainbow Trout13,2087.89 in
Jul 1, 2024Rainbow Trout11,9568 in
Jun 28, 2024Rainbow Trout13,6537.66 in
Jun 28, 2024Rainbow Trout13,2307.74 in
Jun 26, 2024Rainbow Trout14,6887.57 in

About This Data

Every row comes from the stocking information published by Montana Fish, Wildlife & Parks, checked Nov 3, 2026. The agency lists this water as “Holter Reservoir”. Species and sizes are given as the agency names them; a dash means the agency does not say.

More for Montana Anglers

Stocking dates and places can change without notice; check with the agency before a trip. ReelTourney is not affiliated with Montana Fish, Wildlife & Parks.