Unified Interior Regions

Relative size of eruptions from Yellowstone, WY; Long Valley, CA; Novarupta, AK; Mount St. Helens, WA, and other large volcanic events.

Time-exposure image from video camera along Sunset State Beach in Watsonville, CA, looking northwest. This timex (time-exposure) image is a time average of all frames in a 10-minute video sequence. Learn more about the cameras and how we're using them to study

USGS and NPS personnel placed a GPS-transmitter on a California Condor at Pinnacles National Monument.  Photo was taken when the bird was released after attaching the transmitter.

Video camera variance image at Main Beach in Santa Cruz, California, looking eastward. Learn more about the cameras and how we're using them to study coastal change.

Mono Lake with bubbles from a fresh-water spring surrounding a new tufa tower.

The stories in the Jan. - Feb. 2012 issue of Sound Waves:

https://archive.usgs.gov/archive/sites/soundwaves.usgs.gov/2012/02/

Arctic Expedition Reaches 88.5 Degrees North Latitude—Fourth Joint U.S.-Canada Survey for Purpose of Delineating Extended

Medicine Lake caldera viewed from the south rim facing north.

This webcam is located at the USGS stream-gaging station on MERCED R A HAPPY ISLES BRIDGE NR YOSEMITE. This station provides continuous monitoring of certain river conditions such as flow and stage. The webcam provides valuable information to Yosemite National

Poster about the 1997-1998 study by USGS Pacific Coastal and Marine Science Center, to map the floor of San Francisco Bay in order to reveal the bay's shipping hazards.

A landscape at Whiskeytown National Recreation Area 2 months and 9 months after summer 2018's Carr Fire near Redding, California, where USGS WERC researchers are studying fire impacts, post-fire vegetation recovery, and post-fire erosion and debris flows.