USGS released its most detailed national geologic map, offering layered views of geology beneath the Earth’s surface across the lower 48 states. The Cooperative National Geologic Map integrates data ...

USGS water resources/watershed regions map are shown. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for ...

Chloride and nitrate concentrations are rising and arsenic levels are holding steady or falling. Those are two of the conclusions from a U.S. Geological Survey assessment of changes in the nation’s ...

Damaging earthquakes could strike nearly 75 percent of the U.S, new research from the U.S. Geological Survey (USGS) found. Scientists using the USGS National Seismic Hazard Model,created a color-coded ...

New maps released by the U.S. Geological Survey reveal that 7 million people are now living in areas at high risk for earthquakes. Not naturally occurring earthquakes but man-made – induced by oil and ...

For the first time, the U.S. Geological Survey released maps identifying potential ground-shaking hazards from both human-induced and natural earthquakes. In the past, USGS maps only identified ...