How much water does the United States have underground? After years of research, scientists have an answer, with a new, detailed national map of groundwater.

How much water does the United States have underground? After years of research, scientists have an answer, with a new, detailed national map of groundwater.

As much of the Mountain West faces another dry winter, researchers are turning their attention underground to the water many communities rely on but rarely see.

Researchers used 1 million data points and a machine learning algorithm to estimate groundwater stores with higher resolution than ever before.

Researchers used 1 million data points and a machine learning algorithm to estimate groundwater stores with higher resolution than ever before.