Ovando to Bonner, Montana

Best Flies For Blackfoot River

Blackfoot River | Ovando to Bonner, Montana | Updated Oct 29, 2026, 7:00 AM MDT | Station: Blackfoot River near Bonner, MT

Fish deep and slow along the bottom where trout are holding in cold water.

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: Blackfoot River near Bonner · 12340000. The forecast point may differ from the gauge location.

Cold water temperatures and overcast skies mean trout will stay deep and feed primarily on subsurface nymphs and midges. Focus your drifts right along the bottom in slower runs.

What's active
Fish this
BWOs, size 16-18, Midday (10:00 AM–2:00 PM)
Pheasant Tail, size 16-18, nymph; Sparkle Baetis, size 16-18; Micro May, size 16-18
Midges, size 18-22, Midday (10:00 AM–2:00 PM)
Zebra Midge, size 18-22, nymph; Disco Midge, size 18-22; Top Secret Midge, size 18-22
Stoneflies, size 10-14, Afternoon (2:00 PM–6:00 PM)
Rubberlegs, size 10-14; Girdle Bug, size 10-14; Twenty Incher, size 10-14
Caddis, size 14-16, Midday (10:00 AM–2:00 PM)
No matching fly supplied
Terrestrials, size 12-14, Evening (6:00 PM–10:00 PM)
No matching fly supplied
  • Fish deep and slow along the bottom where trout are holding in cold water.
  • Use Double nymph rig with heavy split shot.
  • Favor Beadhead, sparse dubbing, and natural coloration.
Flow683 cfs and falling
Water Temp42°F
WeatherOvercast
Rating6/10 · Fair