Fly Fishing the Clark Fork River

The Clark Fork River is one of Montana’s most impressive freestone rivers, flowing over 300 miles through western Montana before joining the Columbia River system. Known for its stunning mountain scenery, diverse fish populations, and excellent float fishing opportunities, the Clark Fork offers a classic Montana fly fishing experience in the shadow of the Cabinet Mountains and Bitterroot Range.

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BOOK YOUR CLARK FORK RIVER TRIP

$700 per boat (1-2 anglers) • Full day guided float
Includes: Professional guide, drift boat, all gear, lunch

CALL (406) 465-1688]
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A Premier Western Montana Fishery

The Clark Fork is home to healthy populations of rainbow trout, brown trout, cutthroat trout, and mountain whitefish. Fish average 10-14 inches, with opportunities for trout in the 18-20 inch range, especially during fall streamer season. The river’s character changes dramatically throughout its length—from faster pocket water in the upper stretches to broader, boulder-studded runs downstream near Missoula.

What sets the Clark Fork apart is its diverse structure. The river features deep pools, long riffles, undercut banks, and complex boulder gardens that hold fish year-round. This variety creates excellent habitat and keeps fishing interesting throughout the day. Unlike smaller freestone streams, the Clark Fork maintains fishable flows even during late summer, making it one of western Montana’s most reliable warm-weather fisheries.

Why Float the Clark Fork

We highly recommend float trips on the Clark Fork River. The river’s size and character make it ideally suited for drift boat fishing, allowing access to productive water that’s difficult or impossible to reach on foot. Many of the best runs, pools, and bank structures are located in remote sections accessible only by boat.

Floating allows you to cover significant water throughout the day, fishing diverse habitat types from pocket water to deep runs. Your guide will position the boat for optimal casting angles while reading the water ahead, putting you on fish consistently. The Clark Fork has some challenging sections with technical water—rapids, boulder fields, and tight channels—that experienced guides navigate safely while maximizing your fishing time.

Whether you’re fishing with dry flies during hatch activity, nymphing deep runs, or swinging streamers along undercut banks, the drift boat provides the perfect platform. Float trips on the Clark Fork typically run 8-10 hours, covering 10-12 miles of river depending on the section and time of year.

Why Fish the Clark Fork River

The Clark Fork offers everything Montana fly fishing should be: stunning scenery, diverse water types, excellent hatches, and quality wild trout. It’s a river where you can experience the thrill of salmonfly season, the technical challenge of matching PMDs, the excitement of hopper fishing along banks, and the raw aggression of streamer fishing for fall browns.

For anglers wanting classic western Montana freestone fishing with reliable conditions and diverse opportunities, the Clark Fork delivers. It’s big enough to hold substantial fish but not so large that it becomes intimidating. The variety of water types means there’s always something productive to fish, regardless of conditions.

Whether you’re new to fly fishing or a seasoned angler, the Clark Fork provides an authentic Montana experience. Combined with professional guide service, it’s a trip that showcases western Montana fly fishing at its finest.

Hatches on the Clark Fork

1. Skwala Stoneflies: This is the first big hatch of the season on the Clark Fork, usually occurring in late March or early April. These stoneflies are big and easy to spot, making them a favorite among fly fishermen.
2. Salmon flies: These large stoneflies are a favorite among fly fishermen. These big flies. are known to create some of the most exciting fishing we see. The hatch typically occurs in late June or early July and can last for several weeks.
3. Blue-Winged Olives: This hatch occurs throughout the season, but is particularly abundant in the fall. These small, delicate mayflies are a favorite food source for trout on this river system.
4. Pale Morning Duns: An important hatch on the Clark Fork, occurring from June to early July. These mayflies are larger than the Blue-Winged Olives and create a lot of surface activity, making for some exciting fishing.
5. Salmon flies: A favorite among dry fly fishermen and are known to create some of the most exciting fishing . The hatch typically occurs in late June or early July and can last for several weeks.

Fly fishing the Clark Fork is an experience that every angler should have at least once in their lifetime. When you’re planning your fly fishing trip to Montana, be sure to add the Clark Fork River to your itinerary.

Rates & Booking Information

Clark Fork Float Trip: $700 per boat (1-2 anglers, full day)

What’s Included:

• Professional Orvis-endorsed guide and drift boat
• All fishing gear, flies, and equipment
• Riverside lunch and beverages
• Instruction for all skill levels
• 8-10 hours on the water covering 8-12 miles

(406) 465-1688