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Gallatin River Fishing Report

Date: 05/15/2026
Posted by: Toby Swank

Current Conditions

The Gallatin River is high and dirty right now and firmly in runoff conditions. Flows have continued to rise with the warmer weather, and most sections of the river have very limited visibility.

Fishing is difficult and most fish are pushed tight to the banks and into the slowest water available. Softer seams, inside bends, and flooded edges are really the only places worth spending time.

Heavier nymph rigs are the best option right now. Worm patterns, rubberlegs, and larger attractor-style flies fished deep along the banks have been the most productive setup. It’s more about slowing down and thoroughly fishing softer water than covering ground.

Dry fly fishing is pretty much off the table with the current conditions, and streamer fishing has been inconsistent with the amount of water moving through the system.

Unless temperatures cool off significantly, expect the Gallatin to keep rising as runoff continues to build.

Addtional Gallatin River Fly Fishing Resources:

Bozeman Fly Fishing Guide To May

Stream Flows

Gallatin River Fishing Report Streamflow

Flows

Recommended Flies

				  Flashback Pheasant Tail TNG G Bd PT

Pheasant Tail

				  Pats rubberleg bronw

Brown Pat's Rubberleg

				  Jiggy Caddis Pupa Mercer Amber14 064

Amber Jiggy Caddis Pupa

				  Purple lite brite perdigon nymph

Purple Lite Brite Perdigon

				  Prince Nymph

Prince Nymph

				  Use a Pats' Rubberleg for Madison River fishing in high-water.

Black Pat's Rubberleg

				  Great attractor pattern when fishing Yellowstone River in Montana.

Purple Psycho Prince

				  Rainbow spanish bullet

Rainbow Spanish Bullet

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


Montana River Shuttles

Post Date: 03/29/2025

River shuttle services are an integral part of the Montana fly fishing scene as floating these legendary western rivers is the standard way to fish and experience them. Be sure...

Learn More

Montana Fly Fishing Trip Photo Galleries

Post Date: 03/29/2025

Get a glimpse into a day of guided fly fishing in Montana from the viewpoint of the guides and guests with Bozeman fly fishing outfitter, Fins and Feathers Guide Service...

Learn More

Gallatin River Guided Fly Fishing Trips

Post Date: 03/29/2025

Montana fly fishing trips on the Gallatin River with the team at Fins and Feathers Guide Service includes wading the canyon sections south of Bozeman and floating the lower river...

Learn More

Gallatin River Fly Fishing Area Map



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