How To Fish It
- Dead-drift tight against riffle seams and drop-offs with a subtle micro-strike indicator.
- Use Technical Nymphing.
- Favor Sparse, weighted profiles matching small nymphs and pupae.
Bugs & Best Matches
What's active
Fish this
Baetis, size 16-20, Midday (10:00 AM–2:00 PM)
Pheasant Tail, size 16-20, dry; Sparkle Dun, size 16-20, dry; RS2, size 16-20, dry
Midges, size 18-22, Midday (10:00 AM–2:00 PM)
Zebra Midge, size 18-22, dry; Griffiths Gnat, size 18-22, dry; Midge Pupa, size 18-22, dry
Caddis, size 16-18, Midday (10:00 AM–2:00 PM)
Elk Hair Caddis, size 16-18, dry; Caddis Pupa, size 16-18, dry; Deep Sparkle Pupa, size 16-18, dry
Terrestrials, size 14-16, Variable
No matching fly supplied
Stoneflies, size 10-14, Variable
No matching fly supplied
Current Conditions
Flow241 cfs and falling
Water Temp49°F
WeatherClear Night
Rating6/10 · Fair
Today's Feeding Pattern
Clear, low autumn water on the Gallatin requires delicate presentations and realistic subsurface imitations as trout key on active nymphs and midges.
Forecast Location
Related Rivers
About The Gallatin River
The Gallatin starts in Yellowstone National Park and fishes through a long canyon corridor near Big Sky before flattening out toward the valley. Most anglers know it for easy roadside access, cold clear water, and technical pocket-water trout fishing.
Rainbow and brown trout make up most of the catch, with cutthroat higher in the system. It is a wading river first, and reading short feeding lanes matters more here than covering huge flats.
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