All waters · Idaho · Henrys Fork
Henrys Fork, ID
River in Fremont County, Idaho. A world-famous spring-creek-fed branch of the Snake River in eastern Idaho near Island Park and St. Anthony, renowned for technical dry-fly fishing for wild rainbow trout. Brown trout, brook trout, and mountain whitefish are also present. Cold, stable spring flows (Big Springs and Box Canyon) keep water temperatures cool and trout-friendly nearly year-round.
Overall bite score
Scored 17 min ago · recomputed every 30 minutes
Each instrument reads 0 to 100. The score is their weighted blend, tuned for rivers and streams. No black box: every reading names its source.
What swims here
6 tracked species in Henrys Fork, with the months each fishes best.
Water facts
Access at Harriman State Park (Railroad Ranch), Box Canyon, Last Chance, and the St. Anthony area. The USGS gauge (Henrys Fork at St. Anthony) reports discharge only; water temperature uses the seasonal baseline. Many reaches are fly-fishing-only with reduced or catch-and-release trout limits; check posted rules before keeping fish.
See the full forecast for Henrys Fork in the app: best windows, 7-day outlook, what to bring, and offline regulations. The score and essentials are free.
Not legal advice. Always verify with official state regulations.