Lake Mead is the largest reservoir in the United States. It is located on the Colorado River about 30 miles southeast of Las Vegas, Nevada, in the states of Nevada and Arizona. Formed by water impounded by the Hoover Dam. Jagged mountain ranges surround the lake, offering somewhat of a startling but beautiful backdrop, especially at sunset. Lake Mead offers many types of recreation to locals and visitors. Boating is the most popular. Additional activities include fishing, water skiing, swimming and sunbathing.