
Montana · freestone
120 miles
Hatch-chart nymphs, dries, and streamers for this river. Not a crowdsourced catch report.
Open the Gallatin River fly list →3 listed points. Map is Vellum land and Teal water — a desk chart, not a satellite.
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Upper canyon access with good pocket water. Campground parking and short walks to prime water.
Mid-canyon access point. Excellent wade fishing in a section with a good mix of pools and riffles.
Lower canyon access at Storm Castle Creek (formerly Squaw Creek). Good water for both dry flies and nymphs. Easy roadside parking.
Check Montana FWP for current regulations. Some sections have catch-and-release restrictions. The section within Yellowstone National Park requires a separate park fishing permit.
Verify with Montana Fish, Wildlife & Parks. Retrieved 2026-08-31. Seasons and gear rules change.
The Gallatin River is a fly fishing gem that carves its way through one of Montana's most dramatic canyons before emerging into the broad Gallatin Valley near Bozeman. Originating in Yellowstone National Park at Gallatin Lake, the river flows northwest through the Gallatin Canyon, a steep-walled corridor flanked by towering peaks where the rushing water tumbles over boulders and through pocket water that holds eager cutthroat, rainbow, and brown trout. This canyon section is almost exclusively wade-fishing water, and the intimate scale of the river makes it an outstanding dry fly stream where a well-placed Elk Hair Caddis or Stimulator dropped into the foam line behind a boulder can produce explosive strikes from trout that have only a split second to decide before the current sweeps the fly away.
Below the canyon, the Gallatin enters a broad agricultural valley where the river slows, widens, and takes on a different character. The lower Gallatin holds larger brown trout that are best targeted with nymphs and streamers, particularly during the fall months when spawning browns become more aggressive. The river's proximity to Big Sky Resort and Bozeman makes it one of the most accessible quality trout streams in Montana, yet the canyon section's roadside access means that anglers who hike even a short distance from pullouts can find themselves fishing in relative solitude with stunning mountain scenery as their backdrop.

Tailwater
Brown Trout · Rainbow Trout

Freestone
Brown Trout · Rainbow Trout · Brook Trout

Tailwater
Brown Trout · Rainbow Trout

Freestone
Cutthroat Trout · Rainbow Trout · Brown Trout

Freestone
Rainbow Trout · Brown Trout · Westslope Cutthroat Trout

Freestone
Rainbow Trout · Brown Trout · Cutthroat Trout
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