At 1.5 million acres, Lake Mead National Recreation Area is twice ... A vast thin-grass prairie stretches for miles until it suddenly breaks apart against a cluster of inhospitable badlands ...

Beneath the volcanic peaks of the Cascade Range, a surprising discovery has revealed a massive water reservoir. This reserve, ...

An enormous underground water store containing three times the volume of Lake Mead has been discovered ... contains some 19.4 cubic miles of water, or roughly 21,400,000,000,000 gallons, according ...

From Grand Canyon to Petrified Forest to Saguaro National Park, here are the best things to do in Arizona's most beautiful places.

The subterranean aquifer lurking in the mountains contains three times as much water as Lake Mead at full capacity.

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

Concerns are mounting about the water supply in the Southwest as snowpack levels in key regions plummet. The snowpack in the Rockies and Sierra Nevada, which feed vital reservoirs like Lake Mead and ...

The devastating wildfires consuming Los Angeles have driven home to the world the intensity of the water crisis in California ...

Sitting about 35 miles southeast of Las Vegas ... The immense concrete structure – which confines Lake Mead, the largest reservoir in the United States by volume – has helped provide power ...

Researchers discovered the aquifer to be nearly three times the capacity of Lake Mead, a reservoir that covers ... So, what does it mean to have 19 cubic miles of water running under the crest ...