Lake Mead

Lake Mead is the largest man made lake in the United States of America: 110 miles long, 500 feet deep, 822 miles of shoreline, and 28.5 million acre-feet of water (that's just over nine trillion gallons).

The reservoir can store two year's worth of Colorado River water, irrigates two and a quarter million acres of land in the U.S. and Mexico, and supplies water for over 14 million people.