Gallatin River Fishing Report
Date: 09/11/2026
Posted by: Toby SwankCurrent Conditions
The Gallatin River has been in good shape this week, and the cooler weather has kept the fishing consistent. The river has cleared up from the recent storms, and the canyon continues to be the best stretch, although the valley has been improving every day. Dry fly fishing has been picking back up, especially during the afternoon and evening when fish are looking for hoppers, ants, caddis, and the first blue-winged olives on cloudy days.
When the wind is down, fish a hopper or attractor dry and cover plenty of water. If the surface bite slows, a beadhead pat's rubberlegs with a size 16–18 black or olive Spanish bullet underneath has been a dependable setup. Streamers have also been worth fishing on overcast days, especially in the Gallatin Valley where browns are starting to get more aggressive.
The Gallatin is shaping up nicely for September. Cooler nights have kept the river in good condition, and anglers willing to adjust to the weather each day are finding consistent fishing from the canyon all the way into the valley.
Addtional Gallatin River Fly Fishing Resources:
Stream Flows
View stream flow graph on USGS
Recommended Flies
Tan Morrish Hopper
Royal Chubby Chernobyl
Rainbow Spanish Bullet
X caddis
Pheasant Tail
Brown Pat's Rubberleg
Purple Lite Brite Perdigon
Spruce Moth Almighty
Gallatin River Fishing
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.
Additional Gallatin River Fly Fishing Resources
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