Located on the 11,000-acre Harriman Wildlife Refuge in Fremont County, Harriman State Park is a state park and recreation area within the geological feature called Henry's Fork Caldera in the Greater Yellowstone Ecosystem. Once owned by Union Pacific Railroad investors and used as a cattle ranch and private retreat for the Harriman and Guggenheim families, today the park provides visitors with a spectacular landscape and setting in which to soak up the natural beauty and unique history of the area. Situated three miles south of Island Park in eastern Idaho, the park is home to an abundance of wildlife, including elk, moose, black or grizzly bears, sandhill cranes, and trumpeter swans. The Henrys Fork meanders for eight miles through the park and offers some of the best fly-fishing in the region. Other activities in the park include 24-miles of groomed trails for skate and classic skiing, snowshoeing and fat bike riding.

Harriman State Park, 3489 Green Canyon Rd, Island Park, ID 83429, Phone: 208-558-7368

Plan Your Trip

Get Ready to Go!

Need some more help?


Read our Reservations & Travel Planning Tips guide.