Today's Read
Freezing morning temperatures and very cold water mean trout will hug the bottom in a lethargic state. Subsurface presentations using small nymphs will match the most reliable food sources available right now.
Big Sky to Gallatin Gateway, Montana
Gallatin River Fishing Report
Fish deep pocket water and slow seams where trout hold in cold flows. Dead-drift your flies close to the bottom with minimal drag.
Forecast timing & sources
- Forecast generated
- Oct 29, 2026, 7:00 AM MDT
- Valid until
- Oct 30, 2026, 7:00 AM MDT
- Source updated
- Oct 29, 2026, 7:00 AM MDT
- Flow observation
- Observed Oct 29, 2026, 6:30 AM MDT
- Water temperature observation
- Observed Oct 29, 2026, 6:30 AM MDT
Buggin combines river and weather signals into a fishing forecast. A rating is model guidance, not a catch guarantee. Observation times can differ from forecast generation.
Configured gauge: Gallatin River above Deer Creek, near Big Sky · 06043120. The forecast point may differ from the gauge location.
Bugs & Best Matches
What's active
Fish this
Midges, size 18-22, Afternoon (2:00 PM–6:00 PM)
Zebra Midge, size 18-22, nymph; Disco Midge, size 18-22; Top Secret Midge, size 18-22
BWOs, size 16-20, Afternoon (2:00 PM–6:00 PM)
Pheasant Tail, size 16-20, nymph; BWO RS2, size 16-20; Sparkle Dun, size 16-20, dry
Stoneflies, size 10-14, Midday (10:00 AM–2:00 PM)
Rubberlegs, size 10-14; Girdle Bug, size 10-14; Prince Nymph, size 10-14
Caddis, size 14-18, Afternoon (2:00 PM–6:00 PM)
No matching fly supplied
Scuds, size 14-18, Evening (6:00 PM–10:00 PM)
No matching fly supplied
What Is Driving The Feed
- Midges, size 18-22, Afternoon (2:00 PM–6:00 PM)
- BWOs, size 16-20, Afternoon (2:00 PM–6:00 PM)
- Stoneflies, size 10-14, Midday (10:00 AM–2:00 PM)
- Caddis, size 14-18, Afternoon (2:00 PM–6:00 PM)
- Scuds, size 14-18, Evening (6:00 PM–10:00 PM)
Current Conditions
Flow246 cfs and falling
Water Temp37°F
WeatherClear Night
Rating6/10 · Fair
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