Last Chance to Ashton, Idaho

Henry's Fork Fishing Report

Henry's Fork | Last Chance to Ashton, Idaho | Updated Apr 24, 2026, 8:03 AM MDT | Station: Henrys Fork near Island Park

Keep the first part of the day tight and technical with midges and baetis, then look for better afternoon surface feeding if the light stays soft.

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Today's Read

Henry's Fork trout feed in classic technical-water fashion this time of year: steady but selective when the bugs are there, cautious when they are not. Fish hold in slow seams, springy edges, and shallow flats where emergers drift naturally. If you rush the presentation or land too close, you will put them down fast, especially in the Railroad Ranch-style water.

Bugs & Best Matches

What's active
Fish this
Blue-winged olives, size 18-20, midday through afternoon
CDC BWO Emerger, size 18-20, emerger; BWO Sparkle Dun, size 18-20, dry
Midges, size 20-24, morning and calm periods
Zebra Midge, size 20-22, nymph; RS2 gray, size 20-22, emerger
Caddis prep and pupa activity, size 14-16, late afternoon in lower reaches
Pheasant Tail thin, size 18-20, nymph
General subsurface
Griffith's Gnat, size 20-24, dry

What Is Driving The Feed

  • Blue-winged olives, size 18-20, midday through afternoon
  • Midges, size 20-24, morning and calm periods
  • Caddis prep and pupa activity, size 14-16, late afternoon in lower reaches

Current Conditions

FlowTailwater influence keeps some reaches stable, but different sections of the Fork fish very differently on the same day.
Water TempSpring temperatures usually build slow, which puts the most consistent feeding window from late morning into the afternoon.
WeatherFlat light and cloud cover make the best BWO days. Bright sun narrows the surface window.
Rating7/10