A hidden reservoir of groundwater more than twice the size of Lake Mead is buried inside the Oregon Cascades, a new study reports. Scientists found that the underground aquifer holds at least 19.4 ...

An enormous underground water store containing three times the volume of Lake Mead has been discovered hidden underneath the Oregon Cascades. This huge aquifer, stored underneath volcanic rocks ...

An enormous water reservoir — likely the largest aquifer of its kind in on Earth — sits inside the volcanic rocks of the Oregon Cascades, scientists have revealed.