The Gallatin River is exactly where it should be for August. The canyon has been fishing the best, with cool water, good dry fly action, and plenty of fish willing to eat a well-presented hopper or spruce moth.
The lower river is much tougher during the afternoon and remains under hoot owl restrictions from Cameron Bridge to the Missouri River. Smoke has settled into the valley this week, making for hazy mornings and poor visibility, but it hasn't changed the fishing.
This is a river where it pays to keep moving. Cover water with a tan chubby chernobyl or spruce moth and trail an olive or black perdigon underneath. Most fish are sitting in the faster pocket water, and there's usually no reason to stand in one spot very long.
The surface bite has been better than it was a couple of weeks ago. Spruce moths are still around in the canyon, and hoppers are becoming more important every day. Fish are spread out, so if one run doesn't produce, the next one usually will.
Addtional Gallatin River Fly Fishing Resources:
- Bozeman Fly Fishing Report | August 2026 Montana Conditions
View stream flow graph on USGS
Royal Chubby Chernobyl
Yellow Sally Stimi
Rainbow Spanish Bullet
X caddis
Pheasant Tail
Purple Psycho Prince
Brown Pat's Rubberleg
Purple Lite Brite Perdigon
Read our "Gallatin River Fishing Guide" to learn more about fly fishing in Montana on the Gallatin River. It is a great resource for anglers fishing near Bozeman Montana and details the various river stretches and seasonal hatches with tips from our Bozeman fly fishing guides.
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