Idaho ·
Henrys Fork Fly Fishing Report - November 8, 2026
HENRYS FORK
ReportNOV 8 — 15, 2026
🌊
Flow
83CFS
HENRYS FORK NR ISLAND PARK ID
🌡️
Water Temp
—
Updated 2026-11-07
☀️
Weather
26–50°F
Mostly Cloudy
💧
Clarity
Clear
Check post-storm
Flow is running a very low 82.6 CFS at the Island Park gauge with a gauge height of 2.08 ft — expect gin-clear water and spooky fish that demand precise presentations and fine tippet. Temperatures will climb to a pleasant 49°F Sunday under mostly sunny skies before clouds return Monday, setting up a classic late-fall BWO window both afternoons.
What's Working — Hot Flies
Parachute - Blue Wing Olive #22
22
Barr's Flashback Emerger - BWO #22
22
Juju Baetis Tungsten #22
22
BWO WD-40 #22
22
Lil Bit Craven - Dark Olive #22
22
Olsen's Peacock Blowtorch Barbless #22 - 24
22-24
Olsen's Hare's Ear Blowtorch Barbless #20 - 28
20-22
Olsen's Quilldigon - Olive - Barbless #22 - 24
22-24
Black Zebra Midge(TBH) #20
20
Roza's World Spain Perdigon Barbless #18 - 32
18-20
Pheasant Tail Tungsten #20
20
Corn-fed Caddis (CDC) Olive #20
20
Hatch Chart
| Insect | Size | Activity | Prime Time |
|---|---|---|---|
| Blue-Winged Olive (Baetis) | 20-22 | Heavy | 11 AM - 3 PM |
| Midge | 20-24 | Moderate | 9 AM - 12 PM |
| Caddis | 18-20 | Light | 1 PM - 4 PM |
| Pale Morning Dun | 18-20 | Light | 12 PM - 2 PM |
Best Time Window
- 8 AM - 10:30 AM: Morning midge nymph fishing in the deeper pools and soft seams before the sun hits the water; use small Blowtorch and Zebra Midge patterns tight to the bottom.
- 11 AM - 3 PM: Prime BWO hatch window under the midday sun; switch to dry flies and emergers on the flat water and target actively rising fish with long, fine leaders.
- 3 PM - 4:30 PM: Afternoon caddis and trailing BWO activity; work the riffles-to-flat transitions with a CDC caddis or olive dry before light fades and temperatures drop sharply.
Guide's Tip
From the benchWith flows at just 82.6 CFS the Henrys Fork is running low and crystal clear — stealth is everything today. Approach rising fish from downstream, stay low, and make your first cast count; these trout have seen pressure all season and will spook at a bad drift or a heavy footfall. Use a 12- to 14-foot leader tapered to 6X or 7X fluorocarbon and position yourself to achieve a drag-free drift of at least 4 to 6 feet. The best dry-fly action will concentrate in the 11 AM to 3 PM window both days as temperatures peak and BWOs emerge — look for fish sipping in the slower, glassy flats and tailouts rather than the faster riffles.
Main Species
Rainbow Trout
Brown Trout
Yellowstone Cutthroat Trout
