Gallatin River Fishing Report

Date: 10/26/2026

Posted by: Toby Swank

Current Conditions

The Gallatin River continues to fish well as we get into the last week of October. With the colder nights and cooler water temperatures, trout are beginning to settle into some of the deeper runs. There isn't much reason to get out particularly early right now, with late morning through the afternoon providing some of the better fishing.

Nymphing has been one of the most consistent approaches, particularly through the Gallatin Canyon. Pat's rubberlegs, pheasant tails, zebra midges, and smaller perdigons have all been good options. Fish can still be found in some of the faster pocket water, but spending more time fishing the deeper runs and slower water has been worthwhile. Dry-dropper rigs are also producing fish, especially during the warmer parts of the day.

There have been some blue-winged olives coming off, particularly on cloudy afternoons, giving anglers opportunities to catch fish on dry flies. Small BWO patterns in size 18 are worth having, although surface activity has been inconsistent. Streamer fishing has also been improving, especially in the lower stretches of the river. Smaller olive, black, and brown streamers are good options around deeper water and structure.

Overall, the Gallatin remains a good option for anglers fishing around Bozeman. Brown trout are entering their spawning season, so be mindful of redds and avoid disturbing spawning fish.

Addtional Gallatin River Fly Fishing Resources:

- October Fly Fishing in Bozeman, MT.

Stream Flows

View stream flow graph on USGS

Recommended Flies