Fly Fishing Bitterroot River - Missoula

The Bitterroot River near Missoula represents the lower section of this excellent freestone fishery, flowing through open ranchland and agricultural areas while maintaining excellent trout populations and diverse fishing opportunities. This section is wider and more open than the upper Darby section, providing excellent wade and float fishing opportunities. The combination of good water quality, abundant insect life, and consistent fishing makes this a popular destination for both local and visiting anglers seeking a classic Montana fly fishing experience.

The Missoula 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 agricultural fields, providing essential cover and shade. The water clarity is typically good, though it can become slightly off-color during high flows or agricultural runoff. This section is wider and more open than the upper section, making it ideal for float fishing while still maintaining excellent wade fishing opportunities.

This section supports excellent 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 large and aggressive, often responding well to streamers, hoppers, and large attractor patterns. Rainbow trout add variety and are known for their acrobatic fights. Native westslope cutthroat trout are present and add to the diversity of the fishery. Trophy fish exceeding 20 inches are common, with fish over 24 inches possible. Mountain whitefish are also abundant and provide consistent action.

Hatch activity is good throughout the season, with a variety of mayflies, caddis, and stoneflies providing consistent dry fly opportunities. The section benefits from excellent mayfly and caddis hatches during summer, with active hatches including Blue-Winged Olives (BWOs), March Browns, Grey Drakes, and Skwalas providing consistent opportunities. 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 Missoula section range from 400 to 1200 CFS, with flows above 2000 CFS becoming challenging for safe wading. Typical flows vary dramatically by season, with spring runoff peaks and lower flows in fall/winter. The river is excellent for float fishing in drift boats and rafts, with numerous access points making it easy to plan multi-day floats or shorter day trips. Access is excellent along local roads, with numerous public access points, fishing access sites, and pullouts throughout the section. The city of Missoula provides excellent services, including fly shops (Kingfisher Fly Shop, Grizzly Hackle, Missoulian Angler), guides, and accommodations. The nearest major commercial airport is Missoula International (MSO), approximately 15-30 minutes away.

The Bitterroot River near Missoula offers excellent fly fishing opportunities in a more accessible setting than the upper Darby section. Its combination of healthy wild trout populations, diverse water types, and excellent float and wade fishing opportunities makes it an ideal destination for anglers seeking a classic Montana fly fishing experience. The section's reputation for consistent fishing and excellent hatches makes it a popular choice for both local and visiting anglers.