Fly Fishing Blackfoot River - Bonner

The Blackfoot River near Bonner is one of Montana's most iconic fly fishing destinations, immortalized in Norman Maclean's "A River Runs Through It" and the subsequent film. This lower section flows through open terrain before converging with the Clark Fork River, offering excellent fly fishing for wild brown, rainbow, and cutthroat trout in a setting rich with literary and cinematic history. The combination of excellent water quality, abundant wild trout, and legendary status makes this a bucket-list destination for fly anglers from around the world.

The Bonner section flows through relatively flat terrain, creating a mix of fast riffles, deep runs, and classic freestone pools. The river bottom consists of cobble, gravel, and some sand, providing diverse habitat for trout and aquatic insects. The gradient is moderate to gentle, creating excellent holding water throughout the section. The banks are lined with cottonwoods, willows, and conifers, providing essential cover and shade. The water clarity is typically excellent, with cold, highly oxygenated water that supports healthy trout populations. The section from Landers Fork mouth downstream to the confluence with the Clark Fork River is particularly productive, with excellent holding water and diverse structure.

This section supports healthy populations of wild brown trout, rainbow trout, and native westslope cutthroat trout, with fish typically ranging from 12 to 16 inches. The brown trout are particularly aggressive and opportunistic, often responding well to attractor patterns, streamers, and terrestrials. Rainbow trout add variety and are known for their acrobatic fights. Native westslope cutthroat trout are present and are protected by catch-and-release regulations. Brook trout are very rare in this section (bull trout are common and may be misidentified as brook trout, which is why brook trout are catch-and-release only). Trophy fish exceeding 20 inches are possible, with fish over 22 inches occasionally caught. Mountain whitefish are also abundant and provide consistent action.

Hatch activity is good throughout the season, beginning after spring runoff subsides, typically in late May or early June. The section benefits from excellent mayfly and caddis hatches during summer, with various patterns producing exciting dry fly action. Blue-winged Olives emerge in spring and fall, PMDs appear in mid-summer, and various caddis species provide excellent evening fishing. Terrestrial patterns become extremely effective from mid-summer through early fall, with hoppers, ants, and beetles producing excellent results when fished tight to the banks. Streamer fishing can be particularly productive, especially during higher flows or when targeting larger brown trout. Nymphing remains productive year-round, with various mayfly, caddis, and stonefly patterns being effective.

Optimal wading flows for the Bonner section range from 300 to 1000 CFS, with flows above 1500 CFS becoming challenging for safe wading. Typical flows vary dramatically by season, with spring runoff peaks and lower flows in fall/winter. Historical discharge records are available dating back to 1898, providing excellent data for understanding flow patterns. The river is excellent for float fishing in drift boats and rafts, with numerous access points making it easy to plan day trips. Access is excellent along local roads, with numerous public access points, fishing access sites, and pullouts throughout the section. The town of Bonner provides limited services, with additional services available in Missoula. The nearest major commercial airport is Missoula International (MSO), approximately 15-30 minutes away.

The Blackfoot River near Bonner is a legendary fly fishing destination that offers excellent fishing opportunities in a setting rich with literary and cinematic history. Its combination of healthy wild trout populations, diverse water types, and iconic status makes it a bucket-list destination for fly anglers from around the world. The section's reputation for consistent fishing and its connection to "A River Runs Through It" makes it one of the most sought-after destinations in Montana.