Lake Mead

Lake Mead is a reservoir formed by the Hoover Dam on the Colorado River. It is in the states of Nevada and Arizona. It is the largest reservoir in the US. It provides water to the states of Arizona, California, and Nevada as well as some of Mexico, supporting nearly 20 million people and large areas of farmland.
When it is full, Lake Mead is 112 miles (180 km) long and 532 feet (162 m) at its greatest depth. It is 1,229 feet (375 m) above sea level, has a surface area of 247 square miles (640 km2), and contains 28.23 million acre-feet (34.82 km3) of water.
It has not been full since 1983. In 2023 it was 29% full.