Wild Rainbows, Thick Hatches, and Legendary Tailwater Fishing on the Bighorn
The Bighorn River in Montana is one of the most productive tailwater fisheries in the West — and a bucket-list destination for serious trout anglers. Flowing from Yellowtail Dam near Fort Smith, Montana, the Bighorn offers consistent water temperatures, stable flows, and an incredible density of wild trout.
With an estimated 2,500–6,000+ trout per mile, this river is known for healthy populations of strong, hard-fighting rainbow and brown trout, commonly measuring 16–20 inches, with true trophies mixed in.
Whether you’re sight-casting to rising fish, running precise nymph rigs through deep seams, or stripping streamers along cutbanks, Bighorn River fly fishing delivers opportunity on every drift.
Why Fish the Bighorn River
The Bighorn River below Yellowtail Dam is a classic Montana tailwater — wide, steady, and loaded with structure. Its nutrient-rich flows create prolific insect life, resulting in consistent hatches and aggressive feeding behavior.
Anglers choose Bighorn River guided fly fishing trips for:
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High trout numbers per mile
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Strong average fish size (16–20″)
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Reliable year-round fishing
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Technical but rewarding dry fly opportunities
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Excellent nymphing and streamer action
From early spring through late fall, the Bighorn produces steady fishing. March through November is especially productive, with heavy midge, blue-wing olive, caddis, and PMD hatches driving dry fly activity.
Summer brings long days and blanket hatches. Fall delivers aggressive streamer eats and less pressure. Even winter can offer quality nymphing on stable tailwater flows.
Few rivers in Montana combine density, size, and consistency the way the Bighorn does.
Full Day Guided Trip
Enjoy a full-day, 8-hour guided float trip on the Bighorn River.
- Target 16–20” rainbow and brown trout
- Perfect for beginners and experienced anglers alike.
$700 — price for 1–2 anglers
Group rates available — contact us for details.
Why Book With Us?
Experienced Montana Fly Fishing Guides on the Bighorn River
We live and breathe Montana fly fishing, and every Bighorn River guided trip is built around one goal — putting you on fish while delivering a relaxed, professional experience on one of the best trout rivers in the West.
• 15+ years guiding Montana tailwaters and freestone rivers
• Licensed Montana Fishing Outfitter
• Deep knowledge of the Bighorn River below Yellowtail Dam
• Customized trips for beginners, families, and experienced anglers
• Focused on productive, enjoyable, and educational days on the water
When you book a Bighorn River fly fishing guide, you’re getting more than a boat ride — you’re getting local knowledge of seasonal hatches, holding water, pressure patterns, and proven techniques that consistently produce 16–20” rainbow and brown trout.
What to Expect on Your Trip
Our Bighorn River guided fly fishing trips are designed to maximize your time on productive water. We float prime sections near Fort Smith, Montana, targeting trout using techniques matched to current river conditions.
Depending on the season, your day may include:
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Indicator nymphing deep seams and tailouts
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Technical dry fly fishing during midge, BWO, caddis, or PMD hatches
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Streamer fishing for aggressive brown trout
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Sight fishing in clear tailwater flows
Whether you’re a seasoned angler or brand new to fly fishing, your guide adapts the day to your experience level — offering instruction when needed and stepping back when you’re dialed in.
What’s Included:
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Full-day guided float trip (approximately 8 hours)
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Licensed, experienced Montana fly fishing guide
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Rods, reels, flies, and terminal tackle (or bring your own favorites)
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Transportation between meeting point and river put-ins
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Cooler with water, sodas, and light snacks
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Streamside lunch available upon request
What You’ll Need for Your Trip
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Montana Fishing License (Required for anyone 12 and older) [Purchase Your MT License Here ➔] https://ols.fwp.mt.gov/
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Guide Gratuity (Cash preferred, tipping is appreciated)
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Appropriate Clothing (Layers recommended — Montana weather changes fast!)
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Sunglasses and Hat (Polarized sunglasses strongly recommended)
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Beverages and Snacks (We provide water, but feel free to bring extras)
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Good Attitude (Let’s make it a great day on the water!)
Ready to Fish Montana’s Legendary Bighorn River?Dates fill fast during prime season.
Frequently Asked Questions
Guide gratuities are standard practice left to the discretion of the client. Guides typically average 20% ($150+/day) per guide for a full day trip. Our guides will work hard for you and appreciate your gratuity in return.
Our fishing trips are suitable for both beginners and experienced anglers, and our guides can provide assistance and tips to help you improve your fishing skills.
Yes, all Buglife guided trips practice catch and release fishing.
Montana – Craig is conveniently located less than 40 minutes from the Great Falls International Airport AND less than 40 minutes from the Helena Regional Airport.
There is also something to see and do in Big Sky Country! With 2 state parks less than 20 minutes away, you have access to hiking trails at Tower Rock State Park and First People’s Buffalo Jump State Park. A short 45-minute drive will take you to Helena, MT where you can find lots of local shops as well as Broadwater Hot Springs.