Based on the facts provided and my knowledge of Henrys Lake State Park, here’s the description:

Henrys Lake State Park

Tucked into the high country of Island Park at nearly 6,500 feet elevation, Henrys Lake State Park sits at the doorstep of the Greater Yellowstone Ecosystem — just 15 miles from the west entrance to Yellowstone National Park. The 585-acre park wraps around the southwestern shore of Henrys Lake, one of Idaho’s most celebrated trophy trout fisheries.

Anglers come from across the country to pursue the lake’s hybrid cutthroat-rainbow trout (known locally as “cutbows”), brook trout, and yellowstone cutthroat, many reaching 5 pounds or more. Whether you fish from shore, a float tube, or a small motorboat, the lake delivers. A boat ramp provides easy access to the water.

Beyond fishing, the park offers hiking trails with sweeping views of the Continental Divide and the Centennial Mountains. Wildlife watching is rewarding here — moose, sandhill cranes, osprey, and white pelicans are common sights around the marshy inlets. The surrounding area also serves as a gateway for mountain biking, horseback riding, and snowmobiling in winter.

The campground features 45 sites with electric hookups, restrooms, and a dump station, making it comfortable for both tent campers and RV travelers. Sites fill quickly in peak season, so reservations are recommended.

The best time to visit is late June through September, when the lake’s fishing peaks and wildflowers blanket the surrounding meadows. Nights run cool even in summer at this elevation, so pack layers. If you’re planning a Yellowstone trip, Henrys Lake is the quieter, uncrowded basecamp you didn’t know you needed.

Explore Nearby

• Gallatin National Forest — National Forest in Montana
• St. Anthony Sand Dunes — Public Land in Idaho
• Axolotl Lakes — Public Land
• Caribou–Targhee National Forest — National Forest in Idaho, Wyoming, Utah