Fort Smith, Montana

Bighorn River Fishing Report

Bighorn River | Fort Smith, Montana | Updated Sep 14, 2026, 7:00 AM MDT | Station: Bighorn River below Yellowtail Afterbay Dam near St. Xavier, MT

Maintain a drag-free drift bouncing along gravel seams and tailout edges where trout feed reliably in steady tailwater flows.

Forecast timing & sources
Forecast generated
Sep 14, 2026, 7:00 AM MDT
Valid until
Sep 15, 2026, 7:00 AM MDT
Source updated
Sep 14, 2026, 7:00 AM MDT
Flow observation
Observed Sep 14, 2026, 6:15 AM MDT
Water temperature observation
Observed Sep 14, 2026, 6:15 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: Bighorn River at Bighorn, Montana · 06287000. The forecast point may differ from the gauge location.

The Bighorn River at 1840 cfs under overcast skies creates stable tailwater feeding lanes. With scuds and sowbugs present and Baetis showing seasonal potential, subsurface presentations will dominate trout activity.

What's active
Fish this
Scuds, size 14-18, Morning (6:00 AM–10:00 AM)
Olive Scud, size 14-18, dry; Tan Ray Charles, size 14-18, dry; Sparkle Scud, size 14-18, dry
Sowbugs, size 16-20, Morning (6:00 AM–10:00 AM)
Cottage Cheese Sowbug, size 16-20, dry; Tailwater Sowbug, size 16-20, dry; Grey Soft Hackle, size 16-20, dry
Baetis, size 16-20, Morning (6:00 AM–10:00 AM)
Pheasant Tail Nymph, size 16-20, dry; RS2, size 16-20, dry; Baetis Sparkle Dun, size 16-20, dry
Midges, size 18-22, Variable
No matching fly supplied
Caddis, size 14-18, Variable
No matching fly supplied
  • Scuds, size 14-18, Morning (6:00 AM–10:00 AM)
  • Sowbugs, size 16-20, Morning (6:00 AM–10:00 AM)
  • Baetis, size 16-20, Morning (6:00 AM–10:00 AM)
  • Midges, size 18-22, Variable
  • Caddis, size 14-18, Variable
Flow1,840 cfs and steady
Water TempUnavailable
WeatherOvercast
Rating8/10 · Good