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

YELLOWSTONE RIVER
ReportNOV 8 — 15, 2026
🌊
Flow
1060CFS
Yellowstone River at Corwin Springs MT
🌡️
Water Temp
44.8°F
Updated 2026-11-07
☀️
Weather
34–58°F
Mostly Cloudy
💧
Clarity
Clear
Check post-storm
Flow is running 1,060 CFS at Corwin Springs — down slightly from last week and holding clear — with water temps at 44.8°F, keeping trout active and feeding hard through the warmest part of the day. Sunday's high near 58°F with mostly sunny skies sets up an excellent afternoon window for both nymphs and streamers.
What's Working — Hot Flies

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

Juju Baetis Tungsten #22
22

Black Zebra Midge(TBH) #20
20

Olsen's Peacock Blowtorch Barbless #22 - 24
22

Tungsten Tailwater Sowbug - Rainbow #10
10

Egan's Silver Bullet - Baetis #14
14

Coffey's CH Sparkle Minnow Sculpin #6
6

Tungsten Jig Bugger - Olive - Barbless #14
14

Egan's Frenchie #12
12

Top Secret Baetis #16
16

Egan's CDC Rainbow Warrior #22
22
Hatch Chart
| Insect | Size | Activity | Prime Time |
|---|---|---|---|
| Blue-Winged Olive (Baetis) | 20-22 | Moderate | 11 AM - 3 PM |
| Midge | 20-24 | Heavy | 10 AM - 2 PM |
| Caddis | 18-20 | Light | 12 PM - 2 PM |
| Sculpin / Baitfish | 4-6 | Moderate | 9 AM - 11 AM |
| Sowbug / Scud | 10 | Moderate | All Day |
Best Time Window
- 8 AM - 10 AM: Streamer hour — work Sparkle Minnows and Jig Buggers tight to structure before the sun hits the water.
- 10 AM - 2 PM: Prime nymph and hatch window — BWOs and midges come off as temps peak; tight-line nymphs and CDC emergers shine.
- 2 PM - 4 PM: Afternoon dry fly opportunity — look for late BWO risers in slower tailouts and back eddies before the light fades and temps drop.
Guide's Tip
From the benchWith water temps at 44.8°F, trout metabolism is slower in the morning — don't rush to the river at first light. Instead, start with streamers like the Sparkle Minnow along undercut banks and boulder gardens while waiting for the water to warm. Once temps nudge toward the mid-to-upper 40s around late morning, transition to a tight-line nymph rig with a Juju Baetis or Sowbug as your anchor fly, set at 1.5x the water depth, and focus on the seams flanking the main current at 1,060 CFS. If you see BWOs popping between 11 AM and 2 PM — and with Sunday's sunny skies you likely will — switch to a CDC emerger or Parachute BWO and target rising fish in the slower water just off the main flow.
Main Species
Yellowstone Cutthroat Trout
Brown Trout
Rainbow Trout
