River guide · Idaho
Fly Fishing the Henry's Fork
The Henry's Fork of the Snake at Last Chance and Harriman Park is hallowed dry-fly water for its green drake and PMD hatches.
- 1 shops nearby
- spring creek
- June–September (Harriman opens mid-June)
- Idaho
- 5 key hatches
The best time to fly fish the Henry's Fork is June–September (Harriman opens mid-June). Key hatches include Green Drake, Pale Morning Dun, Brown Drake, Trico. 1 fly shop near the Henry's Fork can outfit your trip.
Fly shops near the Henry's Fork
Shops and guides that fish the Henry's Fork. See all 37 Idaho shops →
Species on this water
Nearby towns
Hatches & seasons
When & what to fish on the Henry's Fork
River typespring creek
Best seasonJune–September (Harriman opens mid-June)
AccessThe Last Chance / Harriman State Park stretch off US-20 is the famous flat-water dry-fly section; wading is allowed, and the river has well-marked public access.
Key hatches
- Green Drake (mid–late June)
- Pale Morning Dun (June–July)
- Brown Drake (June, evenings)
- Trico (Aug–Sept)
- Blue-winged Olive (fall)
Gear up on the Henry's Fork
Everything you need before the next trip — rods, lines, leaders, and fly-tying materials.
Shop the gear Flies that workThe flies that work on the Henry's Fork
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Find your fliesUpdated June 2026