Island Park Reservoir
Island Park Reservoir on the Henrys Fork Snake River covers about 7,280 acres. IDFG lists Kokanee and Rainbow Trout as its recommended game fish, and anglers ice fish near the dam in winter.
Species
Fishery rating out of 5.
Kokanee
IDFG recommended game fish
Rainbow Trout
IDFG recommended game fish; 18,720 catchables stocked 2026
Cutthroat Trout
Observed in surveys
Boat launches
2 launch sites. Fees and hours change, so confirm before you go.
- Boat rampsRampIDFG lists a boat ramp, dock, toilet and ADA access; several developed campgrounds and launches nearby, no names givenDirections ↗
- More public accessPublicSee the state agency or lake website for all ramps and feesDirections ↗
Size & creel limits
Special rules for this lake, confirmed from official state regulations. Minimum size and daily limit.
| Species | Min size | Daily limit |
|---|---|---|
| Rainbow Trout | See Idaho rules book ↗ | 6 (trout combined) |
| Cutthroat Trout | See Idaho rules book ↗ | 6 (trout combined) |
| Kokanee | See Idaho rules book ↗ | 15 |
Other species in this lake: look up the limits at Idaho Department of Fish and Game ↗
Bait & tackle nearby
No shops listed yet for this lake. Use the search link below.
Search more bait shops near Island Park Reservoir ↗Local tips
- Summer fishing is best from a boat; bank fishing can be good in fall and spring.
- Kokanee limit 15; trout limit 6 combined.
- Ice anglers target kokanee and rainbows near the dam.
View on interactive map
Zoom and pan on a street, satellite or terrain map. Red pins are boat launches.
More Idaho lakes
Coeur d'Alene Lake Lake Cascade Priest Lake Dworshak Reservoir Blackfoot Reservoir Palisades Reservoir Brownlee Reservoir Lake Lowell All Idaho lakes →
Always wear a life jacket and check your state's current regulations before you fish.