How much fresh water is in the United States? It's a tough question, since most of the water is underground, accessible at varying depths. In previous decades, it's been answered indirectly from data ...

Until now, groundwater -- a critical water resource around the globe, especially in dry regions -- has been largely unstudied in its importance and role in sustaining ecosystems. New groundbreaking ...

Combining direct measurements with artificial intelligence methods, a new map estimates groundwater depth across the continental United States at a resolution of around 30 meters (98 feet). How much ...