Bitterroot River Fishing Report, May 10, 2026

Snowmelt v3 has the entire Missoula-area system high and off-color. Nymphing and streamers are the play across all four rivers; dry fly action is limited but improving on the Bitterroot, where fish are starting to look up in the evenings. Stay safe wading or floating — log jams and tree hazards remain a real concern, especially on the Bitterroot.

Conditions at-a-glance: Mainstem near Missoula at ~6,000 cfs · Water condition: high, off-color to muddy on the mainstem · Daytime water temps climbing into the 50s · Visibility: poor on the main; better on tributaries.

Floaters beware — known obstructions. Lots of trees down again this spring; the obstruction near Poker Joe is still in the way. Call a Missoula fly shop before launching, scout from the bank, and have a plan for portage or pull-out at known hazards.

This is the third "runoff" the Bitterroot has seen this spring — high-water business as usual, but the system is fishing better than its neighbors right now, particularly by boat. Hatches are building: BWOs and midges through the day, Mothers Day Caddis starting to show, increasingly strong March Browns, and late-straggling skwalas and nemoras popping on certain stretches. Evening dry fly action is the highlight, with BWOs, March Browns, and the occasional midge cluster bringing fish up.

Best techniques

• Nymph deeper runs, seams, and transition water — get bugs down quick with heavy rigs.
• Dry fly windows are real this week, especially evenings; keep a dry box handy.
• Streamers slow and tight to structure with small-to-medium flashy patterns that sink fast.
• East Fork and West Fork (Freestone tip) are often clearer than the mainstem when the main is blown.

The Fly Box

Nymphs: Pat's Rubber Legs, TJ Hookers, Pheasant Tails, Frenchies, Blowtorches, Duracells, Hare's Ears, San Juans

Dries: Plan B (Black/UV Black, Black/Purple), MFC Hot Spot Para-Wulff (Brindle), Rio's Film Critic (BWO), Stranahan's Brindle Chute, On Point Para Wulff (BWO), Carlson's Olive Haze

Streamers: Sparkle Minnow, Goldie, Kreelex, Mini Dungeons

Outlook: Mostly cloudy today with a high of 70°F, warming to 83°F by Wednesday. A 35% chance of light rain mid-week before partly sunny conditions return Thursday. Expect runoff to remain the dominant story for another week or two; clarity windows on tributaries and side channels are the bridge to peak season.