News

Ozette Lake, on Washington State’s Olympic Peninsula, is the largest unaltered lake in the state. Glacially carved to depths of about 100 meters (328...

In September 2025, USGS Research Geophysicist Guy Cochrane served as a technical expert on seafloor mapping and marine benthic ecosystems during two...

A selection of coastal and ocean videos and photographs from across the USGS.

While many of California’s beaches have narrowed over time due to coastal erosion, new research from USGS and the University of California, Irvine...

Coral reefs do more than support vibrant marine ecosystems—they also act as natural breakwaters, protecting coastlines from storm-driven waves. New...

The erodibility of bed sediment in estuaries can shape everything from water clarity to habitat quality, and influences the magnitude of sediment...

Far below the ocean surface off the Pacific Northwest coast, earthquake-triggered landslides record the powerful stirrings of the Cascadia Subduction...

Coastal communities across California face increasing threats from flooding with changes in storm patterns and sea-level. Now all coastal areas across...

Sediment bulk density is a physical property of the sediment bed that tells scientists how compacted the particles are. It’s a key parameter for...