Lake Mead is the largest reservoir in the United States in maximum water capacity. It is located on the Colorado River about 24 mi (39 km) from the Strip southeast of Las Vegas, Nevada, in the states of Nevada and Arizona. Formed by the Hoover Dam, Lake Mead is impressive: 112 miles (180 km) long when the lake is full, 550 miles (890 km) of shoreline, around 500 feet at greatest depth, 247 square miles (640 km) of surface, and when filled to capacity, 28 million acre-feet of water. However, the lake has not reached this capacity in more than a decade, due to increasing droughts. The lake was named after Elwood Mead (January 16, 1858 January 26, 1936), who was the commissioner of the U.S. Bureau of Reclamation from 1924 to 1936 during the planning and construction of the Boulder Canyon Project that created the dam and lake. Lake Mead was established as the Boulder Dam Recreation Area in 1936, administrated by the National Park Service.