Last Chance to Ashton, Idaho

Henry's Fork Fishing Report

Henry's Fork | Last Chance to Ashton, Idaho | Updated Oct 28, 2026, 7:00 AM MDT | Station: Henrys Fork near Island Park, ID

Drift through slow runs and deeper weed beds with a long, dead-drift setup.

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, 6:45 AM MDT
Water temperature observation
Observed Oct 28, 2026, 6:45 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: Henrys Fork near Island Park · 13039000. The forecast point may differ from the gauge location.

Cold overcast conditions and low October flows keep trout focused near the bottom. Technical subsurface presentations offer the most consistent action.

What's active
Fish this
BWOs, size 16-20, Midday (10:00 AM–2:00 PM)
Juju Baetis, size 16-20; Sparkle Dun, size 16-20, dry; RS2, size 16-20, emerger
Midges, size 18-22, Midday (10:00 AM–2:00 PM)
Zebra Midge, size 18-22, nymph; Griffiths Gnat, size 18-22, dry; Disco Midge, size 18-22
Caddis, size 16-18, Midday (10:00 AM–2:00 PM)
Pearl And Elk, size 16-18; Elk Hair Caddis, size 16-18, dry; Caddis Pupa, size 16-18, nymph
Scuds, size 14-18, Morning (6:00 AM–10:00 AM)
No matching fly supplied
Terrestrials, size 14-16, Afternoon (2:00 PM–6:00 PM)
No matching fly supplied
  • BWOs, size 16-20, Midday (10:00 AM–2:00 PM)
  • Midges, size 18-22, Midday (10:00 AM–2:00 PM)
  • Caddis, size 16-18, Midday (10:00 AM–2:00 PM)
  • Scuds, size 14-18, Morning (6:00 AM–10:00 AM)
  • Terrestrials, size 14-16, Afternoon (2:00 PM–6:00 PM)
Flow86 cfs and steady
Water TempUnavailable
WeatherOvercast
Rating6/10 · Fair