Henry's Lake State Park

Located in Fremont County in southeastern Idaho, Henry's Lake State Park sits on the northern shore of the 6,600-acre Henry's Lake, a large alpine lake fed by multiple streams and springs from the surrounding Yellowstone Plateau. The park covers about 585 acres of grasslands, wetlands, and shoreline, providing important habitat for waterfowl, moose, deer, and a rich diversity of bird species. Henry's Lake itself is known regionally for its trout fishing, including cutthroat, rainbow, and lake trout, making it a popular destination for anglers year-round. The park's terrain includes open grassy fields, dense willow thickets, and scenic views of nearby mountains such as the Centennial and Henrys Peak. Henry's Lake has cultural significance dating back to Native American use of the lake and surrounding area for fishing and hunting. Today, visitors enjoy a range of recreational activities including camping, boating, kayaking, wildlife viewing, and hiking along trails adjacent to the lake. The Henry's Lake Lookout Trail provides panoramic views of the lake and surrounding mountains. The park is also a key stopover for migratory birds, attracting bird watchers and photographers keen on spotting species such as trumpeter swans, great blue herons, and bald eagles. Winter brings opportunities for cross-country skiing and snowshoeing in the region. The park is accessible from U.S. Highway 20 and is located about 40 miles west of West Yellowstone, Montana, making it a convenient alternative for visitors exploring the Greater Yellowstone Ecosystem.