Harriman Ranch Area provides access to the Henrys Fork Snake River through multiple entry points including Osborne Bridge (boat ramp on river right) and Last Chance (boat ramp), offering wade and float access to one of America's premier fly-fishing sections.

The area features 11,000 acres of protected wildlife refuge with 24 miles of trails for hiking, biking, and horseback riding, plus historic ranch buildings available for tours during summer months.

Day-use fees apply ($5 per vehicle), and overnight lodging is available in yurts and historic cabins; note that the Henrys Fork through the park is restricted to fly-fishing only with special seasonal regulations (June 15-November 30).