The Water / Native Trout / Westslope Cutthroat
Headwaters Float · Full Day

Westslope Cutthroat

High, clear headwaters where a well-drifted dry is everything.

4.97 · 210 floats Upper Bitterroot River, Montana Catch & Release · Barbless
Guided By Blackwater Ridge

The most willing native trout in the drainage.

A full day on the wild upper river, walk-and-wade and short-float, chasing the Bitterroot's native westslope cutthroat on dry flies. These are the most honest, most beautiful trout in the West — eager to rise to a well-presented dry in gin-clear water you can only reach with a guide who knows the seams. One captain, two anglers, and a stretch of headwaters that sees almost no pressure. Barbless hooks, every fish returned to the current.

Dry-Fly Heaven
Sight-fishing rising trout in clear, shallow headwater runs.
Two Anglers Max
One captain on the oars, two rods — never a crowd.
Gear Provided
Rods, reels, flies, waders — bring yourself and a license.
Catch & Release
Barbless, low-impact, every native fish returned.
Prime dates booking now
Best dry-fly weeks: July – September
Book Now
The Species

Know your fish.

Oncorhynchus clarkii lewisi Oncorhynchus clarkii lewisi
Common Name Westslope Cutthroat
Scientific Name O. clarkii lewisi
Avg. Length 10–16 in
Trophy Class 18+ in
Avg. Weight 1–2 lb
Diet Mayfly & Stonefly
Native Status Montana Native
Conservation Special Concern
The Hatch Chart · 2026

What's coming off the water.

Mar–Apr
Pre-Runoff
First risers in slow, cold water.
Skwala
Late May–Jun
Salmonfly
The big bugs. Pure chaos.
Salmonfly
Jul–Aug
Summer Dries
Technical risers, long light.
PMD · Caddis
Sep–Oct
Hopper Season
Terrestrials on the banks.
Hopper
Nov–Feb
Winter Midge
Quiet days, careful drifts.
Midge
Water & Region

The river you'll fish.

The upper Bitterroot is a classic freestone — cold, clear, and tumbling out of the Selway-Bitterroot Wilderness. Summer flows drop and clarity climbs, turning the headwaters into a dry-fly dream. We read the river daily and put you where the fish are holding.

Summer Flow
800–1,400 cfs
Wadeable & clear
Water Temp
48–58°F
Cold-water trout
Elevation
3,900–5,200 ft
Headwater country
Clarity
Gin Clear
Sight-fishing water
Best Hours
10am–Dusk
Midday & evening rise
Pressure
Low
Private & remote access
The Float Day

How the day runs.

AM1
Meet & Rig
Coffee at the put-in, rig rods, and a quick read of the day's water and weather before we push off.
Mid2
On the Water
Drift and wade the best runs, swinging dries through holding seams. Streamside lunch packed in, then back at it through the afternoon.
PM3
The Evening Rise
The best light of the day. Work the spinner fall as the river comes alive, then drift to the take-out at dusk.
What's Included

Bring yourself & a license.

Full-day guided float, 2 anglers
Rods, reels & flies for the day
Waders & boots (all sizes)
Streamside lunch & drinks
Shuttle & all river logistics
Casting instruction for all levels
Montana fishing license
Guide gratuity (15–20% customary)
From the River

The Bitterroot, up close.

Westslope Cutthroat — fishing (gallery)
Westslope Cutthroat — fishing (gallery)
Westslope Cutthroat — fishing (gallery)
Before You Book

Common questions.

Not at all. Roughly half our anglers are picking up a fly rod for the first time. Your guide teaches casting, reading water, and presentation as you go — beginners regularly land their first trout on a Bitterroot dry. Seasoned anglers, just tell us and we'll point the boat at the technical stuff.

A valid Montana fishing license, polarized sunglasses, a hat, sunscreen, and layers for changing weather. We supply all rods, reels, flies, waders, and boots. A rain shell is smart any month, and a soft-sided cooler if you want to bring your own drinks.

Yes — every trip is barbless, catch-and-release. The native westslope cutthroat is a fish of special concern, and protecting the fishery is the whole point. We handle every fish wet, photograph fast, and return it to the current.

We fish in light rain — trout often eat best under cloud. If conditions become unsafe (lightning, blowout flows), we'll reschedule or refund the day. Your guide makes the call with your safety first.

Absolutely. This listing is a single full day, but we run multi-day trips and wilderness float camps on request. Tell us your dates and party and we'll build an itinerary around the best water for your week.

Westslope Cutthroat

The river is rising.

Prime dry-fly weeks book a season ahead. Claim your day on the water.

Book Now