Guided Fly Fishing on the Clark Fork River, Montana

The Clark Fork River is one of Montana's premier fly fishing destinations, flowing over 300 miles through western Montana's spectacular mountain country. Riverstone Outfitters offers expert-guided trips on the Clark Fork from St. Regis to Plains to Paradise to Thompson Falls, where excellent trout fishing meets stunning river scenery and authentic Montana hospitality.

Why Fish the Clark Fork River

The Clark Fork is Montana's largest river by volume, offering diverse fishing opportunities from its headwaters near Butte to its confluence with the Pend Oreille River in Idaho. This powerful freestone river has recovered dramatically from historical mining impacts and now supports excellent trout populations, prolific hatches, and world-class fly fishing. The Clark Fork represents one of conservation's greatest success stories.

Clark Fork River Locations & Access

We fish four main sections of the Clark Fork River, each offering unique characteristics and excellent fishing opportunities:

St. Regis, Montana - Upper Clark Fork

St. Regis sits at the confluence of the Clark Fork and St. Regis Rivers along Interstate 90 in western Montana. This historic railroad town provides convenient access to excellent fishing water with a friendly, authentic Montana atmosphere.

St. Regis Area Highlights:

• Convenient I-90 access for travelers
• Rainbow and brown trout populations
• Mix of riffles, runs, and deep pools
• Beautiful mountain scenery
• Good hatches throughout the season
• Easy access from Missoula (1 hour east)

Plains, Montana - Middle Clark Fork

Plains is a charming small town in the heart of the Clark Fork Valley, offering access to some of the river's most productive water. This section provides classic Montana freestone fishing with diverse habitat and excellent trout populations.

Plains Area Highlights:

• Excellent rainbow and brown trout fishing
• Productive water with good fish density
• Diverse habitat and water types
• Less fishing pressure than more famous rivers
• Stunning valley and mountain views
• Friendly small-town Montana hospitality

Paradise, Montana - Lower Middle Clark Fork

Paradise is a tiny community along the Clark Fork River offering access to excellent fishing water in a beautiful valley setting. This section features bigger water and trophy fish potential.

Paradise Area Highlights:

• Larger water with bigger fish
• Trophy brown trout potential
• Excellent drift boat fishing
• Scenic valley with mountain backdrops
• Good hatches and consistent fishing
• Quiet, uncrowded atmosphere

Thompson Falls, Montana - Lower Clark Fork

Thompson Falls sits on the lower Clark Fork River near the Idaho border, offering access to big water with excellent trout fishing. This historic town provides a gateway to the lower river's productive waters.

Thompson Falls Area Highlights:

• Big river fishing with trophy potential
• Rainbow, brown, and cutthroat trout
• Excellent streamer fishing for large trout
• Beautiful lower Clark Fork scenery
• Less pressure than upper sections
• Charming historic town with amenities

Clark Fork River Fly Fishing

Excellent Trout Water

The Clark Fork River offers outstanding fly fishing:

• Rainbow Trout - Abundant populations of hard-fighting rainbows
• Brown Trout - Trophy potential throughout the system
• Cutthroat Trout - Native westslope cutthroat in the system
• Bull Trout - Rare native char in some sections (catch and release only)
• Diverse Habitat - Riffles, runs, pools, pocket water, and deep holes
• Consistent Hatches - Caddis, PMDs, stoneflies, baetis, and terrestrials
• Big Water Character - Montana's largest river by volume

What to Expect on a Clark Fork River Trip:

• Drift Boat Floats - Cover miles of prime water
• Wade Fishing Options - Access to excellent wade fishing spots
• Expert Guides - Experienced anglers who know the Clark Fork
• All Gear Included - Rods, reels, flies, and waders provided
• Full-Day Adventures - 8-10 hours on the water with lunch
• All Skill Levels - From beginners to expert fly fishers
• Multiple Sections - We fish the best water based on conditions

Seasonal Fishing on the Clark Fork

Spring (Late May-June): Runoff season with high water. Fishing improves as runoff subsides in late June. Excellent stonefly hatches.

Summer (July-August): Prime season with lower, clearer water. Excellent dry fly fishing with caddis, PMDs, and terrestrials. Warm weather and great hatches.

Fall (September-October): Outstanding fishing as trout feed aggressively before winter. Beautiful fall colors and fewer anglers. Many consider this the best season for trophy browns.

Winter (November-March): Limited winter fishing opportunities, but some sections offer winter fishing for dedicated anglers.

The Clark Fork River Recovery Story

The Clark Fork River is one of conservation's greatest success stories. Historical mining pollution from Butte and Anaconda severely impacted the river for decades. Through massive cleanup efforts, habitat restoration, and water quality improvements, the Clark Fork has recovered to become an excellent trout fishery. Today's healthy fish populations and thriving aquatic insect life demonstrate what's possible when communities commit to river restoration.

Conservation & Responsible Angling

We practice catch-and-release fishing on the Clark Fork River and encourage all anglers to help protect this recovering fishery. Use barbless hooks, handle fish gently, and follow all regulations. Organizations like the Clark Fork Coalition continue working to protect and restore this watershed for future generations.

Why Fish the Clark Fork with Riverstone Outfitters

• Big River Expertise - We specialize in large freestone rivers
• Multiple Section Access - We fish St. Regis, Plains, Paradise, and Thompson Falls based on conditions
• Quality Equipment - Premium gear suited for big water
• Personalized Service - Trips tailored to conditions and your goals
• Professional Guides - Licensed, experienced, and passionate
• Conservation Minded - We protect the waters we fish

Planning Your Clark Fork River Trip

The Clark Fork River sections we fish are located approximately 2-3 hours from our Kalispell/Whitefish base, depending on which section we choose. We'll select the best section based on current conditions, water levels, seasonal patterns, and your preferences. Many anglers combine a Clark Fork River trip with fishing near Glacier National Park, the Missouri River, or Blackfoot River for a diverse Montana fly fishing experience.

Nearby Towns & Amenities

St. Regis: Historic railroad town with lodging, restaurants, and convenient I-90 access. Perfect for travelers passing through western Montana.

Plains: Charming small town with basic services, friendly locals, and authentic Montana character. Gateway to the Thompson River drainage.

Paradise: Tiny community with limited services but incredible river access and scenery. Quiet and uncrowded.

Thompson Falls: Historic town with full services, lodging, restaurants, and shopping. Beautiful setting on the lower Clark Fork near Idaho.

Combine Clark Fork Fishing with Other Adventures

The Clark Fork River area offers excellent opportunities to combine fishing with other Montana experiences:

• Explore nearby wilderness areas and hiking trails
• Visit historic mining towns and museums
• Combine with Glacier National Park fishing trips
• Fish multiple Montana rivers in one trip (Clark Fork, Blackfoot, Missouri)
• Enjoy small-town Montana hospitality and culture

Book Your Clark Fork River Trip

Ready to experience the Clark Fork River? Browse our guided fly fishing trips or contact us to plan your Montana fishing adventure. Whether you're fishing near St. Regis, Plains, Paradise, or Thompson Falls, the Clark Fork River offers excellent fly fishing, stunning scenery, and an authentic Montana experience.

Fish the Clark Fork River - where conservation success meets world-class fly fishing in western Montana.