The map — the first of its kind — provides a visual representation of Earth's groundwater resources and estimates that the planet's total groundwater supply stands at approximately 5.5 million ...

Ecosystems around the world are at risk from declining levels of underground water, a study has found — and protected areas aren’t growing fast enough to stem the losses. A map released ...

The Iowa legislature has set aside $250,000 to start developing accurate maps of Iowa’s underground water resources. State geologist Keith Schilling is director of the Iowa Geological Survey ...

The California Department of Water Resources has spent the last few years trying to gain a better understanding of the state's groundwater basins.

A map released Tuesday offers the first comprehensive map of the world’s underground water sources, as ecosystems around the world are at risk from declining levels of underground water.