Today's Read
Clear, cold autumn morning conditions on the Gallatin River point to slow, methodical subsurface feeding as trout hold in deep, quiet water waiting for midday warmth.
Big Sky to Gallatin Gateway, Montana
Gallatin River Hatch Report
Fish slow, deep runs and seams with a long, dead-drift presentation close to the river bottom.
Forecast timing & sources
- Forecast generated
- Oct 28, 2026, 7:00 AM MDT
- Valid until
- Oct 29, 2026, 7:00 AM MDT
- Source updated
- Oct 28, 2026, 7:00 AM MDT
- Flow observation
- Observed Oct 28, 2026, 6:30 AM MDT
- Water temperature observation
- Observed Oct 28, 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 to 22, Midday (10:00 AM–2:00 PM)
Zebra Midge, size 18 to 22, nymph; Disco Midge, size 18 to 22; Top Secret Midge, size 18 to 22
BWOs, size 16 to 20, Midday (10:00 AM–2:00 PM)
Pheasant Tail, size 16 to 20, nymph; Sparkle Minnow, size 16 to 20; RS2, size 16 to 20, emerger
Stoneflies, size 8 to 12, Morning (6:00 AM–10:00 AM)
Pat's Rubber Legs, size 8 to 12, nymph; Girdle Bug, size 8 to 12; Twenty Incher, size 8 to 12
Caddis, size 14 to 18, Midday (10:00 AM–2:00 PM)
No matching fly supplied
Terrestrials, size 14 to 16, Afternoon (2:00 PM–6:00 PM)
No matching fly supplied
How Fish Respond To This Hatch
- Clear, cold autumn morning conditions on the Gallatin River point to slow, methodical subsurface feeding as trout hold in deep, quiet water waiting for midday warmth.
- Fish slow, deep runs and seams with a long, dead-drift presentation close to the river bottom.
Current Conditions
Flow264 cfs and falling
Water Temp40°F
WeatherClear Night
Rating7/10 · Good
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