Reservations are also taken via the toll-free telephone number: 1-877-444-6777
The Buttermilk campground is located adjacent to Island Park Reservoir at an elevation of 6300'. From US Hwy 20 go 2 miles west on the Yale/Kilgore Rd. then about 2 1/2 miles south on the Buttermilk Loop Rd.
A boat ramp and large parking area is located between the main campground and the group camping area.
The Group Area and several of the Individual Campsites may be reserved.