Unified Interior Regions

California

The Southwest Region includes California, Nevada, and Arizona. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions.

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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.

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Image: Assessing the Health of a Sugar Pine in California

Assessing the Health of a Sugar Pine in California

USGS biologists assess the health of a sugar pine, one of tens of  thousands of individual trees whose fates have been tracked annually throughout the drought in California.

Attribution: Land Resources
Image: A Fire Tornado Swirls Near a Home in Southern California

A Fire Tornado Swirls Near a Home in Southern California

A screenshot from the USGS film "Living with Fire".

A fire tornado swirls near a home in southern California. USGS is investigating the factors that dictate home loss from wildfires as part of the USGS Southern California Wildfire Risk Scenario Project.

Image courtesy of Tim Walton, Photo One Productions, CALFIRE. Shared with permission.

Attribution: Natural Hazards
Lassen Peak viewed from the south at the summit of Brokeoff Volcano...

Lassen Peak viewed from the south at the summit of Brokeoff Volcano...

Lassen Peak viewed from the south at the summit of Brokeoff Volcano, Lassen Volcanic National Park.

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.

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

Santa Cruz Main Beach video camera variance image

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.

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