Montana Fish Stocking: What FWP Plants, Where, and When
Montana FWP stocks fish in select waters across the state — not the famous wild trout rivers, but hundreds of lakes and ponds where hatchery fish improve access. Here's how the program works.
By StockedWaters team
Montana is famous for wild trout — the Yellowstone, the Madison, the Missouri. But Montana Fish, Wildlife and Parks (FWP) also operates a substantial fish stocking program in waters that wouldn't otherwise support quality fishing. Understanding what gets stocked — and where — helps you plan trips to some of Montana's lesser-known but highly productive fisheries.
How Montana's Stocking Program Works
Montana FWP operates hatcheries at Fort Peck, Miles City, Lewistown, Washoe, Anaconda, and several other locations. These facilities produce rainbow trout, brown trout, rainbow-cutthroat hybrids (cutbows), and other species for distribution across the state.
Montana's stocking philosophy differs from states like California or Washington. FWP does not stock the world-class wild trout rivers — the Madison, Gallatin, Big Hole, Bitterroot, and others sustain themselves through natural reproduction. Stocking targets lakes, ponds, reservoirs, and smaller streams that lack self-sustaining wild populations.
Species Stocked in Montana
Rainbow trout are the primary stocked species statewide. FWP also plants brown trout in reservoirs and some larger lakes where they can grow to trophy sizes. Brook trout go into high-mountain lakes in the Rockies, Cabinet, and Beartooth ranges. Westslope cutthroat and Yellowstone cutthroat are planted in some lakes to restore native species presence.
Montana also stocks kokanee salmon in several large reservoirs, including Noxon, Lake Koocanusa, and Swan Lake. These landlocked sockeye are a popular target and can provide fast action when located. Some eastern Montana reservoirs receive walleye and northern pike stocking as well.
Which Waters Get Stocked in Montana
FWP prioritizes public access waters that provide fishing opportunities to local communities and visitors who can't access the famous private-access rivers. Community ponds in smaller towns receive regular rainbow plantings. Reservoirs near population centers — like Hauser Lake, Canyon Ferry, and Noxon Rapids — receive larger-scale stocking programs.
Remote mountain lakes are stocked by air — FWP coordinates aerial fish drops into lakes inaccessible by road. These backcountry lakes offer solitude and fishing for brook trout and cutthroat in some of the most spectacular country in the lower 48. Stocking schedules for these lakes are published in FWP's annual stocking report.
Montana Stocking Season
Montana's stocking season runs primarily from late April through June as lowland waters warm up enough for comfortable transport, and again in September and October for fall plantings. High-elevation lakes get their fish in July and August after ice-out. Winter stocking is limited to a few year-round fisheries.
Finding Montana Stocking Reports
Montana FWP publishes stocking records through their online portal, updated periodically throughout the year. StockedWaters aggregates Montana stocking data so you can browse by region — see Montana stocked waters for a searchable view of recent plants.
Frequently Asked Questions
Does Montana stock the Madison or Yellowstone Rivers?
No. FWP does not stock fish in the premier wild trout rivers. Waters like the Madison, Gallatin, Bitterroot, and upper Yellowstone sustain wild populations through natural spawning. Stocking them would compete with and potentially harm native and wild fish.
When is the best time to fish stocked waters in Montana?
May and June are peak times for lowland stocked lakes after spring planting. Fall plantings in September and October offer another window before ice-up. High-elevation lakes are best July through September after ice-out and before early fall freezes.
Are there trophy trout stocked in Montana?
FWP stocks larger trout in some designated waters, particularly certain reservoirs that are managed for trophy rainbow or brown trout. Check the FWP stocking report for size data — waters receiving 2 lb and larger fish are noted separately from standard catchable plantings.
Can I catch kokanee in Montana lakes?
Yes. Several large western Montana reservoirs have productive kokanee populations established from stocking programs. Lake Koocanusa, Noxon Rapids, and Swan Lake are among the most consistent producers. Kokanee fishing peaks in summer when the fish school near the thermocline, typically 30 to 60 feet deep.