The Clark Fork River, stretching approximately 310 miles through western Montana and into Idaho, is the state's largest river by volume. Originating near Butte, Montana, it flows northwest, offering diverse fly fishing opportunities amidst stunning landscapes. The river has undergone significant environmental restoration, transforming it into a thriving habitat for various trout species and a prime destination for anglers.
The Clark Fork River can be divided into several distinct sections, each offering unique fishing experiences:
- **Upper Clark Fork**: From its headwaters near Butte to Missoula, this section features meandering bends and is known for brown trout fishing.
- **Middle Clark Fork**: Flowing through Missoula, this stretch benefits from tributaries like the Blackfoot and Bitterroot Rivers, increasing its size and fish diversity.
- **Lower Clark Fork**: Extending from Missoula to the Idaho border, this section is characterized by larger water and abundant rainbow trout populations.
Anglers can target a variety of fish species in the Clark Fork River, including:
- **Rainbow Trout**: Abundant throughout the river, especially in the lower sections.
- **Brown Trout**: Common in the upper reaches and known for their elusive nature.
- **Westslope Cutthroat Trout**: Native to the region and often found in tributaries and cooler sections.
- **Bull Trout**: An endangered species requiring catch-and-release practices.
- **Mountain Whitefish**: Present throughout the river and provide year-round fishing opportunities.
Understanding the behavior and diet of the river's fish enhances angling success:
- **Rainbow and Brown Trout**: Feed on a variety of aquatic insects, including mayflies, caddisflies, and stoneflies. Terrestrial insects like grasshoppers become important in late summer.
- **Westslope Cutthroat Trout**: Prefer cooler waters and are often found near tributaries. They feed on smaller insects and are more likely to rise to dry flies.
- **Bull Trout**: Predatory and primarily feed on smaller fish. They are more active during low-light conditions.
Effective fishing methods vary by season and river section:
- **Spring (March-May)**: Nymphing with stonefly and mayfly patterns is productive. Streamer fishing can entice aggressive pre-spawn brown trout.
- **Summer (June-August)**: Dry fly fishing excels during hatches of caddisflies, mayflies, and terrestrials. Early mornings and late evenings are prime times.
- **Fall (September-November)**: Streamer fishing targets aggressive brown trout. Blue-winged olive hatches provide dry fly opportunities.
- **Winter (December-February)**: Midge hatches can offer limited dry fly action. Nymphing remains the most consistent method.
Notable fishing locations along the Clark Fork include:
- **Kelly Island**: Accessible from the west end of Spurgin Road, known for spring fly fishing opportunities.
- **Tower Street Conservation Area**: Located just below the confluence of the Bitterroot and Clark Fork Rivers, offering excellent hatches.
- **Turah Bridge**: Near I-90, provides ample space for wade fishing.
- **Rock Creek Confluence**: Just off I-90, a prime spot for catching brown and rainbow trout.
Key access points along the river include:
- **Johnsrud Park**: Located 12 miles east of Missoula, featuring a boat ramp and fishing access site.
- **Sha-Ron Fishing Access Site**: Approximately 8 miles east of Missoula, known for shallow, swift waters.
- **Bonner Town Bridge**: At the east end of Bonner, providing spacious areas for fly-casting.
- **Turah Bridge**: Just off I-90, offering access to several prime fishing spots.
A versatile setup is essential for the Clark Fork:
- **Rod and Reel**: A 9-foot, 5-weight rod is suitable for most conditions. For larger streamers or windy days, a 6-weight rod is beneficial.
- **Lines**: Floating lines cover most scenarios. Sink-tip lines are useful for streamer fishing in deeper sections.
- **Flies**: Carry a selection of dry flies (e.g., caddis, mayflies), nymphs (e.g., stoneflies, hare's ear), and streamers (e.g., woolly buggers).
The Clark Fork has a history of environmental challenges due to past mining activities. Ongoing restoration efforts aim to improve water quality and habitat. Anglers are encouraged to practice catch-and-release, minimize streambed disturbance, and participate in local conservation initiatives to support the river's health.
Safety is paramount when fishing the Clark Fork:
- **Water Levels**: Be aware of seasonal fluctuations, especially during spring runoff, which can create hazardous conditions.
- **Weather**: Montana's weather can change rapidly; dress in layers and be prepared for sudden shifts.
- **Wildlife**: The area is home to bears and other wildlife; carry bear spray and know how to use it.
- **Navigation**: Some sections have challenging rapids; ensure you have the necessary skills and equipment if floating the river.
Local fly shops provide valuable resources and up-to-date information:
- **Grizzly Hackle Fly Shop**: Located in Missoula, offering gear, guides, and lodging.
- **Missoulian Angler Fly Shop**: The oldest fly shop in Missoula, providing a range of services and products.
Several organizations are dedicated to the conservation of the Clark Fork River:
- **Clark Fork Coalition**: Focused on protecting and restoring the Clark Fork River basin.
- **Trout Unlimited**: Engages in conservation efforts across Montana, including the Clark Fork watershed.