Jefferson River Fly Fishing in Montana

Sourcing from Big Hole and Beaverhead Rivers on the Continental Divide and known for its brown trout, the Jefferson River flows 80 miles through southwest Montana before joining the Missouri River in Montana.

The Jefferson River meets the Gallatin and Madison Rivers to form the Missouri River at Headwaters State Park but before it gets there, it flows about 70 miles through farmland and canyons and offers excellent brown trout fishing opportunities.

Best Place to Fish

The best fly fishing is found in the upper section, between Twin Bridges and Cardwell, accessed along the Jefferson via routes 41, 287, 55, 2 and 10. Floating and wading can both be successful methods here as the Jefferson River flows through farmland.

Best Time to Fish

Jefferson River is cold in the spring, with sparse hatches of mayfly and caddis. After about a 4-6 week snow meltoff (about mid-May to mid-June), the large "salmonflies" come out, offering anglers both a challenging and rewarding experience. Try using large streamers or nymphs to attract large brown trout.

As summer continues, and before the river gets too warm, try fishing with Muddler Minnows, Bitch Creeks, Girdle Bugs, Prince Nymphs, and Matukas. Experienced area guides and outfitters listed here can also assist you in finding the best spot, fly, and perfecting your cast.

In early September, the river is back in prime form offering excellent fishing for big pre-spawn brown trout and spirited rainbows. The same Matuka and Muddler patterns work this time of year, as will sculpins, wooly bugger-style streamers and rubber-leg stonefly nymphs.