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This release of information serves as an updated summary of U.S. Geological Survey information as it relates to the current understanding of the South...

Yesterday at 3:20 AM local time, the northern San Francisco Bay Area was struck by the largest earthquake to impact the Bay Area since the 1989 M6.9...

Natural methane leakage from the seafloor is far more widespread on the U.S. Atlantic margin than previously thought, according to a study by...

U.S. Geological Survey field crews are measuring flooding after heavy rainfall occurred in northern portions of Maricopa County, Arizona.  

About 38 billion gallons per day (42,000,000 acre-feet per year) of water were withdrawn from groundwater and surface-water sources in California in...

As of Wednesday afternoon, August 13, all power issues were resolved and the U.S. Geological Survey Hawaiian Volcano Observatory resumed monitoring...

For the past decade, scientists from the U.S. Geological Survey have shared their expertise with the Afghanistan Geological Survey (AGS) in efforts to...

For the past decade, scientists from the U.S. Geological Survey have shared their expertise with the Afghanistan Geological Survey (AGS) in efforts to...

Groundwater is the sole source for agricultural, domestic and municipal water use in California’s Cuyama Valley, located primarily in Santa Barbara...

Despite the magnitude 8.2 earthquake that hit northern Chile in April 2014, the plate boundary in that region is still capable of hosting shocks of...