Lake Mead, the source of almost 90 percent of Southern Nevada’s water, is expected to near 2022’s historic low by the end of 2025, this month’s Bureau of Reclamation projection shows.

Lake Mead, located on the Colorado River, is the largest reservoir in the United States by capacity and a critical water source for millions of people across Nevada, Arizona, California ...

An enormous water reservoir — likely the largest aquifer ... A hidden reservoir of groundwater more than twice the size of Lake Mead is buried inside the Oregon Cascades, a new study reports.

North of the California border, scientists just found 21 trillion gallons of water hiding in the cracks of volcanic rock.

California has conserved enough water in the past two years to return up to 16 feet to Lake Mead, Southern Nevada’s water source that reached a record low two years ago. “We are not slowing ...