A major, 7.1-magnitude earthquake struck in the South China Sea on Sunday, according to the United States Geological Survey.

A pair of earthquakes struck near Healdsburg on Saturday morning, according to the United States Geological Survey.

A 4.3 magnitude earthquake struck 15 miles north of Healdsburg, according to the United States Geological Survey.

A minor earthquake was reported throughout part of southwestern Ohio on Sunday.

For years, the United States Geological Survey stream gauges have been a part of fishing in Pennsylvania streams and rivers. With over 580 such gauges Commonwealth-wide, there is a good chance there ...

In August, the United States Geological Survey (USGS) released its most extensive geological map to date. It's called The Cooperative National Geologic Map, and it provides an interactive look at the ...

The US Geological Survey released its assessment of potential for undiscovered oil and gas in the Niobrara formation in southwest Wyoming and northwest Colorado. The assessment determined that there ...