Gallatin River Fly Fishing Report
Bozeman, Gallatin County, Montana · Last Updated: May 28, 2026
A swift, freestone river flowing through a dramatic canyon near Bozeman, the Gallatin is a fantastic wade fishery for wild brown and rainbow trout. Its proximity to Yellowstone National Park and consistent dry fly action make it a perennial favorite.
Today's Fishability
Conditions at a Glance
The Gallatin River near Bozeman is running very high at 2200 cfs, 206% above average and near the top of the historical range.
- High water - consider safety
- No reliable water temp data
- Flow significantly off optimal
How Do You Fish a 3.7/10 Day?
See the fly patterns built for today's conditions, where the fish are holding, and how to work the 7:00 AM - 11:00 AM, 4:00 PM - 7:00 PM window. The full read takes 10 seconds to unlock.
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USGS Water Monitoring
Real-time data from 3 monitoring stations
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Gallatin River Fly Fishing — FAQ
Is the Gallatin River fishing well right now?
DriftWise scores the Gallatin River every morning on a 0–10 fishability scale that weighs real-time USGS flow and water temperature, National Weather Service forecasts, and lunar data. Check the live fishability score and condition summary above for today's rating before you head out.
What is the current water flow on the Gallatin River?
The Gallatin River's flow is tracked by USGS streamflow gauges near Bozeman, Gallatin County, Montana and refreshed daily in the condition summary above. Flow is reported in cubic feet per second (cfs) and compared against the seasonal average so you can see whether the river is running high, low, or normal.
What is a good water temperature for trout on the Gallatin River?
Trout feed most actively when water temperatures sit roughly between 48°F and 62°F. DriftWise reads live Gallatin River water temperature from USGS sensors near Bozeman, Gallatin County, Montana — see the summary above for the current value.
When is the best time of day to fish the Gallatin River?
The most productive windows shift with the season: cold months fish best around midday (10 AM–2 PM) once the water warms, while summer rewards early mornings and evenings. Each Gallatin River report factors in the current season.
Do I need a fishing license to fly fish the Gallatin River?
Yes. A valid Montana fishing license is required to fish the Gallatin River. Check current Montana regulations for seasons, limits, and any special catch-and-release or fly-fishing-only sections before you go.
Is the DriftWise Gallatin River fishing report free?
Yes. The daily Gallatin River condition summary — flow, water temperature, weather, and fishability score — is free. A free account (3 reports per month) unlocks the full AI analysis with fly-pattern recommendations and a detailed hatch forecast.
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