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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Image: Northridge, CA Earthquake Damage
January 1, 1994

Northridge, CA Earthquake Damage

Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.

Attribution: Natural Hazards
Photo shows the major collapse of a building following an earthquake, the building has fallen onto and crushed a car completely.
December 31, 1989

Loma Prieta earthquake, Marina District

An automobile lies crushed under the third story of this apartment building in the Marina District. The ground levels are no longer visible because of structural failure and sinking due to liquefaction.

Mount Konocti on the western shore of Clear Lake, California
December 31, 1975

Mount Konocti on the western shore of Clear Lake, California

Mount Konocti, a mostly dacitic composite cone, on the western shore of Clear Lake, California. Thurston Lake is in the foreground.

asbestos
December 31, 1969

Tremolite Asbestos

Tremolite asbestos, Death Valley, California.

Three men stand in front of a single-engine airplane in an open field.
December 31, 1965

Three geologists and a plane

Three pioneers of USGS geological studies, in 1965, from left to right: Parke D. Snavely, Jr., Robert E. Wallace, and Thomas W. Dibblee, in front of a 1964 Cessna 182G Skylane.

Photo of a low, one-story building with windows and a big front entrance reading Wm. Wrigley Jr. Co.
December 31, 1955

Front of the William Wrigley, Jr. Company building in west Santa Cruz

Front of the Wm. Wrigley Jr. Co. building in 1955, now home to the USGS Pacific Coastal and Marine Science Center.

A building after an earthquake has crumbled the roof and brick walls, the interior is now visible.
March 26, 1933

Long Beach Earthquake Damage

View of John Muir School on Pacific Avenue in Long Beach, California, showing damage from the March 10, 1933 Long Beach earthquake. Photo taken 8 days after the earthquake, on March 18, 1933. Photo by W.L. Huber, USGS.

Coso hot springs, black and white image
February 4, 1920

Coso Hot Springs located at Coso Volcanic Field, CA

Coso Hot Springs in Coso volanic fields, Feb 4, 1920.

View from the sky of a city and its waterfront with various ships docked, and most buildings on land are ruined.
May 28, 1906

San Francisco in ruins, 1906

One of the most well-known photographs by George R. Lawrence, taken May 28, 1906, about 6 weeks after the Great San Francisco earthquake which occurred on April 18. The 160-degree panorama was taken from a camera suspended from a kite 2,000 feet in the air. The view looks up Market Street with the waterfront and Union Ferry Building in the foreground.

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Mount Konocti viewed from Cinder Cone, Clear Lake Volcanic Field.
December 31, 1905

Mount Konocti viewed from Cinder Cone, Clear Lake Volcanic Field.

Mount Konocti, the most distinct volcanic feature of the Clear Lake Volcanics as viewed to the west from Cinder Cone.

old black and white photo of collapsed building, with inset image of the building before collapse
December 31, 1868

Alameda County Courthouse (Calif.) before and after 1868 Earthquake

Strong shaking during the 1868 Hayward Fault earthquake caused the second story of the Alameda County Courthouse in San Leandro to collapse (photo courtesy of the Bancroft Library, University of California). The inset photo shows the courthouse before the quake