Unified Interior Regions


States L2 Landing Page Tabs

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Black and white outline of man holding a duckling with a transmitter on its back
June 20, 2019

Coloring Sheet: Duckling With Transmitter

A PDF copy of a coloring sheet showing a USGS scientist holding a mallard duckling with a transmitter attached to its back, based on an image taken in Suisun Marsh, California.

Eel River at Fernbridge, CA

This webcam is located at the USGS stream-gaging station on EEL RIVER AT FERNBRIDGE. This station provides continuous monitoring of river stage. The webcam provides valuable information to the National Weather Service, first-responders, and area residents to evaluate real-time conditions in the creek

Sketch map of Shasta Valley debris-avalanche deposit (shaded). ...

Sketch map of Shasta Valley debris-avalanche deposit (shaded).

Heavy dashed lines show approximate margins of Shasta Valley and base of Mount Shasta volcano; dotted line indicates western edge of Quaternary basalt.

This dark image shows changes in pixels in a video image over 10 minutes.

Santa Cruz Cowells Beach video camera variance image

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

Image of the front page of Sound Waves, Sept. - Oct. 2011
March 22, 2019

Sound Waves, Sept. - Oct. 2011

The stories in the Sept. - Oct. 2011 issue of Sound Waves:


High-Resolution Multibeam Mapping of Mid-Atlantic Canyons to Assess Tsunami Hazards 

USGS Scientists Develop System for

Whiskeytown National Recreation Area Post-fire Recovery

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.