island-park-dam
Island Park Dam is a feature on Henrys Fork, Idaho.
It is fishable.
Top of Box Canyon; flows reported as 'Island Park Dam' by shops.
It is on the stretch Box Canyon.
It is upstream of Box Canyon Boat Ramp.
Sourced from 3 sites.
Sources: bigskyanglers.com, threeriversranch.com (retrieved 2026-10-20) and worldcastanglers.com.
Access, closures and rules change; check with the state agency before you go.