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Southwest Montana, Montana
Big Hole River Fly Fishing Report
Latest Big Hole 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
Big Hole River Fishing Report: May 25, 2026
Big Hole River is good today with 1,430 cfs at 7:15 am, a stable flow trend, and a best window of late morning through afternoon, with clouds extending the window.
- Status
- good
- Best window
- Late morning through afternoon, with clouds extending the window
- Best methods
- nymphs, dry flies
- Wadeability
- good
Latest official sources checked: USGS Water Data, National Weather Service.
Recent reports
7 dated Big Hole River reports, newest first.
May 25, 2026
| Water | Best window | Methods | Wadeability | Status | Report |
|---|---|---|---|---|---|
| Big Hole RiverSouthwest Montana, MontanaBig Hole River is good today with 1,430 cfs at 7:15 am, a stable 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 | good | good | Read report |
May 21, 2026
| Water | Best window | Methods | Wadeability | Status | Report |
|---|---|---|---|---|---|
| Big Hole RiverSouthwest Montana, MontanaBig Hole River is good today with 1,900 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 | limited | good | Read report |
May 20, 2026
| Water | Best window | Methods | Wadeability | Status | Report |
|---|---|---|---|---|---|
| Big Hole RiverSouthwest Montana, MontanaBig Hole River is good today with 2,130 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 |
|---|---|---|---|---|---|
| Big Hole RiverSouthwest Montana, MontanaBig Hole 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 |
|---|---|---|---|---|---|
| Big Hole RiverSouthwest Montana, MontanaBig Hole River is fishable but mixed today. | Late morning through evening as clarity allows | nymphs, streamers, dry flies | limited | fair | Read report |