Gallatin River Fishing Report

Date: 10/19/2026

Posted by: Toby Swank

Current Conditions

The Gallatin River has been fishing well lately. The recent snow and warmer weather have caused some changes in water clarity, but overall, the river remains a good option for anglers fishing around Bozeman. With the cooler mornings, there isn't much reason to get out particularly early right now. The better fishing has been from late morning through the afternoon as water temperatures begin to warm up.

Nymphing has been the most consistent way to catch fish, particularly in the Gallatin Canyon. Pat's rubberlegs, zebra midges, pheasant tails, and smaller perdigons have all been good options. As water temperatures continue to cool, fish are starting to move out of the faster pocket water and into some of the slower runs. Streamer fishing has also been productive, especially in the lower stretches of the river.

There have been some blue-winged olives coming off, particularly on overcast afternoons, and anglers are finding a few fish feeding on the surface. Small parachute mayflies in sizes 18–22 are worth having, but nymphing is still going to be the better option when fish aren't rising. Overall, the Gallatin is fishing well for the middle of October, and the afternoons should continue to provide some of the better opportunities.

Addtional Gallatin River Fly Fishing Resources:

- October Fly Fishing in Bozeman, MT.

Stream Flows

View stream flow graph on USGS

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