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.

States L2 Landing Page Tabs

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Lassen Peak photographed from the Devastated Area about 4 hours bef...

Lassen Peak photographed from the Devastated Area about 4 hours bef...

Lassen Peak photographed from the Devastated Area about 4 hours before the explosive eruption of May 22, 1915.

Image: California’s Hotter Drought and Tree Death

California’s Hotter Drought and Tree Death

California's hotter drought has already killed millions of trees, particularly in low-elevation forests.

Attribution: Land Resources
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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Image: USGS and National Park Service Releasing California Condor

USGS and National Park Service Releasing California Condor

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.

Attribution: Ecosystems

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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California Wildfires

Satellites have captured views of the numerous major fires burning in California.
An image acquired on November 9, 2018, from NASA’s MODIS sensor on the Terra satellite shows smoke pouring out of two major fires, the Camp Fire and the Woolsey Fire, which both ignited the day before.
In the north, the Camp Fire quickly became the deadliest wildfire in the state’s

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