Henry's Fork: hatch chart + live conditions
The Railroad Ranch reach through Harriman State Park is among the world's greatest dry-fly fisheries. Giant rainbows rising to PMDs and Green Drakes on flat, clear water. Highly technical; catch-and-release throughout the park section.
Top 3 dry flies for September
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12-month hatch chart
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Frequently asked
What are the best months to fish the Henry's Fork?
Best months: June, July, August, September, October.
What flies hatch on the Henry's Fork in September?
Active hatches this month: blue wing olive, pale morning dun, trico.
What species are in the Henry's Fork?
Primary: rainbow trout, brown trout. The Railroad Ranch reach through Harriman State Park is among the world's greatest dry-fly fisheries. Giant rainbows rising to PMDs and Green Drakes on flat, clear water. Highly technical; catch-and-release throughout the park section.
Are there special fishing regulations on the Henry's Fork?
No special-regulation section is listed here, so standard Idaho trout regulations apply. Check ID F&G before fishing.
How do I check live water conditions on the Henry's Fork?
The live USGS reading is shown at the top of this page (site 13042500). It refreshes hourly.
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