Fly fishing · MT · Big Hole Valley · Blue Ribbon

Big Hole River: hatch chart + live conditions

One of the last wild arctic grayling rivers in the lower 48. Blue Ribbon trout water with massive salmonfly and golden stonefly hatches. Float or wade the upper valley for grayling.

Current conditions: Checking USGS… USGS site 06024580

Top 3 dry flies for September

1
Parachute Adams fly pattern
Size 14-20 · dry
Matches active hatch: blue wing olive.
2
Elk Hair Caddis fly pattern
Size 12-16 · dry
Matches active hatch: caddis.
3
Blue Wing Olive (Comparadun) fly pattern
Size 18-22 · dry
Matches active hatch: blue wing olive.

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12-month hatch chart

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Frequently asked

What are the best months to fish the Big Hole River?

Best months: June, July, August, September.

What flies hatch on the Big Hole River in September?

Active hatches this month: blue wing olive, caddis, october caddis, terrestrial.

What species are in the Big Hole River?

Primary: brown trout, rainbow trout, arctic grayling. One of the last wild arctic grayling rivers in the lower 48. Blue Ribbon trout water with massive salmonfly and golden stonefly hatches. Float or wade the upper valley for grayling.

Are there special fishing regulations on the Big Hole River?

No special-regulation section is listed here, so standard Montana trout regulations apply. Check MT FWP before fishing.

How do I check live water conditions on the Big Hole River?

The live USGS reading is shown at the top of this page (site 06024580). It refreshes hourly.

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