Island in the Sky Campground (Willow Flat) has 12 sites, first-come, first-served. The campground is open year-round. The spectacular Green River Overlook is nearby. Nightly camping fee is $15 per site. Sites fill quickly spring through fall. There are toilets, picnic tables, and fire rings in the campground. There is no water at the campground. You can get drinking water outside the visitor center spring through fall.