Grebe Lake is a 156 acres (0.63 km2) backcountry lake in Yellowstone National Park most noted for it population of Arctic Grayling. Grebe Lake comprises the headwaters of the Gibbon River. Grebe Lake is located approximately 3.1 miles (5.0 km) north of the Norris-Canyon section of the Grand Loop Road. The trail to the lake passes through mostly level Lodgepole Pine forest and open meadows. There are four backcountry campsites located on the lake.