Fishing Season: Year round; some tributaries closed December 1-third week of May. Check regulations before fishing.

Bitterroot River - MT

Fishing Outlook & Conditions

Water Temp:

38

Blackfoot River Outfitters's Tip of the Week

While temps in our area are warming up, water temperatures have stayed relatively cold (sub 40F). This is often due to melting snow and shelf ice lowering the water temperatures. Be sure to bring a thermometer with you while fishing so you can monitor water temps. This will help determine the best approach for fishing.

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Map of Bitterroot River

Water Flow Data

Orvis-Endorsed guides nearby

Blackfoot River Outfitters
Blue Damsel Lodge
Montana Hunting and Fishing Adventures
Triple Creek Ranch

5-Day Outlook as of 3/11/26

The 'Root is setting up for a gorgeous week, boasting afternoon highs climbing comfortably into the low 50s as we head toward the weekend. A quick mix of rain and snow mid-week will clear out quickly, leaving mostly sunny skies and light breezes in its wake. Water conditions are holding steady with classic low winter flows, and the valley warmth should be actively deteriorating any remaining shelf ice on the lower river. *There are currently MANY obstructions on the Bitterroot. When In Doubt, Eddy Out! As always, we want anglers to know that they are responsible for their own wellbeing when they are on the water. As an outfitter, we will try our best to bring known dangers to light, but conditions and obstructions are always changing and we can't possibly keep up with every danger that may present itself. When in doubt, eddy out and walk downstream to get a good look at what you're dealing with!

Techniques & Tips as of 3/11/26

Nymphs are going to be your best option for fishing the Bitterroot over the next week. With colder water temps you’ll want to focus your fishing on deep slow runs and pools. Avoid the faster water and riffles. Slowly swinging a streamer could prove effective as well.

Local Species Available Year round; some tributaries closed December 1-third week of May. Check regulations before fishing.

  • Fish Icon

    Trout - rainbows

  • Fish Icon

    browns and cutties - whitefish

Blackfoot River Outfitters's Recommended Fly Patterns

"Must-have" fly fishing patterns in descending order of importance:

Name: Colors: Size(s):
Midge N/A #18-22
Birchell's Hatching Midge N/A #18-20
Vernille San Juan Worm red/pink #8-12
Fly Formerly Known As Prince N/A #12-14
TJ Hooker N/A #08-12
Sparkle Minnow N/A #04-08
Bead Head Hare's Ear Nymph N/A #12-16
Tunghead Soft Hackle Pheasant Tail N/A #14-18
Zebra Midge N/A #18
Kreelex N/A #6

Midge

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Item #0836

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Blackfoot River Outfitters's Recommended Gear

Description: About Bitterroot River

The panoramic mountains of the Selway-Bitterroot Wilderness towering above this river make for an unforgettable setting. The Bitterroot affords anglers over 80 miles of varied freestone trout water ranging from riffles and runs to undercuts and deadfalls. This river's largest fish often rise to dry flies even in non-hatch conditions. One of our guides claims that "If you catch a fish on the Bitterroot, you could have caught it with a dry fly!" This probably isn't far from the truth in light of our fishing dries here 90% of the time (often with an additional bead head dropper). Renowned hatches of stone and may flies are in full force by March, providing the state's best early season surface action and Bitterroot river fish tend to look up for the rest of the season. Expect to catch native westslope cutthroat, rainbows and browns on any outing.

Nearest Airport:

Missoula International Airport (MSO)

Hatches:

Midges and winter stones.

Best Time to Fish:

The warmest hours of the day

Best Stretch:

Most of the river is looking good. Keep an eye out for potential jams and portages.

Best Access:

Multiple fishing access sites throughout the river.