AAA Editor Notes
Yellowstone Lake is e. and s. of the park road between West Thumb and Fishing Bridge. Covering 132 square miles at 7,733 feet above sea level, this lake is the largest body of water in North America at so high an altitude. It is also home to the continent's largest population of wild cutthroat trout. The mountain lake has 110 miles of shoreline and a maximum depth of more than 400 feet. Boating and fishing are popular summer sports, but because the water stays so cold, swimming is not advised; the lake freezes over completely in winter.