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Greater Yellowstone, Montana
Gallatin River Fly Fishing Report
Latest Gallatin River conditions, hatch notes, wadeability, best fishing windows, and recommended flies. Reports are updated from current official gauge and weather data when useful, with dated archive links below.
Latest report: May 25, 2026
Gallatin River Fishing Report: May 25, 2026
Gallatin River is fair today with 1,330 cfs at 7:00 am, a rising flow trend, and a best window of late morning through afternoon, with clouds extending the window.
- Status
- fair
- Best window
- Late morning through afternoon, with clouds extending the window
- Best methods
- nymphs, dry flies, streamers
- Wadeability
- limited
Latest official sources checked: USGS Water Data, National Weather Service.
Recent reports
7 dated Gallatin River reports, newest first.
May 25, 2026
| Water | Best window | Methods | Wadeability | Status | Report |
|---|---|---|---|---|---|
| Gallatin RiverGreater Yellowstone, MontanaGallatin River is fair today with 1,330 cfs at 7:00 am, a rising flow trend, and a best window of late morning through afternoon, with clouds extending the window. | Late morning through afternoon, with clouds extending the window | nymphs, dry flies, streamers | limited | fair | Read report |
May 21, 2026
| Water | Best window | Methods | Wadeability | Status | Report |
|---|---|---|---|---|---|
| Gallatin RiverGreater Yellowstone, MontanaGallatin River is good today with 1,140 cfs at the primary gauge and morning, then adjust around showers, storms, and wind as the best window. | Morning, then adjust around showers, storms, and wind | nymphs, streamers, dry flies | good | good | Read report |
May 20, 2026
| Water | Best window | Methods | Wadeability | Status | Report |
|---|---|---|---|---|---|
| Gallatin RiverGreater Yellowstone, MontanaGallatin River is good today with 1,180 cfs at the primary gauge and morning, then watch storms and showers as the best window. | Morning, then watch storms and showers | nymphs, streamers, dry flies | good | good | Read report |
May 19, 2026
| Water | Best window | Methods | Wadeability | Status | Report |
|---|---|---|---|---|---|
| Gallatin RiverGreater Yellowstone, MontanaGallatin River is in a useful fishing window today. | Late morning through afternoon | nymphs, streamers, dry flies | limited | good | Read report |
May 18, 2026
| Water | Best window | Methods | Wadeability | Status | Report |
|---|---|---|---|---|---|
| Gallatin RiverGreater Yellowstone, MontanaGallatin River is fishable but mixed today. | Late morning through evening as clarity allows | nymphs, streamers, dry flies | limited | fair | Read report |