SONOMA COUNTY, CA - Saturday night, a preliminary 2.3 magnitude quake was detected near The Geysers, according to the U.S.

Mapping out geology across the U.S. is surprisingly difficult, but the USGS has managed just that, and its map is more ...

KERN COUNTY, CA - Friday morning, a preliminary 2.3 magnitude quake was recorded near Johannesburg, according to the U.S.

Two weekend earthquakes rattled southeast Missouri, though neither was strong enough for residents to report feeling them.

Local emergency agencies say they are monitoring the seismic activity but have not issued any tsunami warnings.

Two earthquakes were recorded within hours of each other near Marion, North Carolina, and witnesses report they felt shaking ...

A 3.0 magnitude earthquake shook parts of northeast San Diego County shortly after 8 p.m. on Wednesday, according to the U.S.

A 3.2-magnitude earthquake struck Northern California, just near Sonoma County, early Friday morning, according to the U.S.

A U.S. Geological Survey representative told the Little Calumet River Basin Development Commission in August that arsenic ...

Suffolk County is doubling down on protecting its most vital resource, clean water. The U.S. Geological Survey will monitor ...