An enormous water reservoir — likely the largest aquifer of its kind in on Earth — sits inside the volcanic rocks of the ...

The hidden water reservoir is shockingly larger than previously thought—holding more than half the volume of Lake Tahoe.

Oregon's Cascade Range mountains might not hold gold, but they store another precious resource in abundance: water.

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

Mt. Shasta is a stratovolcano and part of the Ring of Fire, a horseshoe-shaped collection of volcanoes that line the Pacific ...

The previously unmapped aquifer is estimated to be more than three times the size of the Lake Mead reservoir in Nevada.