Montana ·
Bitterroot River Fly Fishing Report - November 8, 2026

BITTERROOT RIVER
ReportNOV 8 — 15, 2026
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Flow
857CFS
Bitterroot River near Missoula MT
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Water Temp
—
Updated 2026-11-07
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Weather
31–53°F
Mostly Cloudy
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Clarity
Clear
Check post-storm
The Bitterroot is running at 857 cfs with a gauge height of 3.3 ft near Missoula — solid winter-transition flows with good clarity expected; Sunday brings partly sunny skies and a high of 53°F, ideal for triggering the midday BWO hatch that has been the story of early November.
What's Working — Hot Flies

Parachute - Blue Wing Olive #22
#22
Barr's Flashback Emerger - BWO #22
#22

Juju Baetis Tungsten #22
#22

Top Secret Baetis #16
#16
BWO WD-40 #22
#22
Lil Bit Craven - Dark Olive #22
#22

Black Zebra Midge(TBH) #20
#20

Olsen's Peacock Blowtorch Barbless #22 - 24
#22-24

Olsen's Straggle Stone Brown Barbless #12 - 32
#12

Tungsten Pat's Rubber Legs - Tan & Brown #6
#6

Coffey's CH Sparkle Minnow Sculpin #6
#6

Egan's Frenchie #12
#12
Hatch Chart
| Insect | Size | Activity | Prime Time |
|---|---|---|---|
| Blue-Winged Olive (Baetis) | 20-22 | Heavy | 11 AM - 3 PM |
| Midge | 20-24 | Moderate | 10 AM - 2 PM |
| Stonefly (Little Brown) | 12-16 | Light | 12 PM - 3 PM |
| Caddis | 16-18 | Light | 1 PM - 4 PM |
Best Time Window
- 8 AM - 10 AM: Pre-hatch nymphing with stoneflies and Frenchies in the deeper runs before the sun hits the water.
- 11 AM - 3 PM: Prime BWO hatch window — watch for rising fish in tailouts and switch to dry or emerger presentations.
- 4 PM - Dusk: Streamer hour along undercut banks and woody debris targeting aggressive brown trout.
Guide's Tip
From the benchWith the Bitterroot settling into early-winter flows at 857 cfs, focus your nymphing in the 2-4 foot depth range through the classic runs and tailouts — set your indicator so your flies are ticking the bottom. The midday BWO hatch (11 AM to 3 PM) is the highlight of the day; when you see fish rising in the flat water, downsize to a 6X tippet and switch to a dry or emerger presentation. Streamers are worth a serious look in the first and last hour of light — work the Sparkle Minnow tight to the bank with short, aggressive strips to target the big browns that are actively feeding ahead of winter. Keep an eye on the fog Monday morning; once it burns off, the cloud cover should keep the BWO hatch going strong.
Main Species
Westslope Cutthroat Trout
Brown Trout
Rainbow Trout
