Lake Mead, in the Colorado River system, is an important supplier of water to the Golden State. It is the largest U.S.

Despite historic holiday storms resulting in reservoirs to overflow in California, Lake Mead’s water level declines in 2025.

"Currently, the water-in-storage situation for the Colorado River system is not good," one expert told Newsweek.

Water levels at Hoover Dam stayed below 1,070 feet for the entirety of 2025. Levels were at their highest in February, at ...

Lake Mead, along the Nevada-Arizona border, the largest reservoir in the U.S. by capacity, could hit worryingly low levels in the coming years, according to officials. Lake Mead, capable of storing ...