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

Filter Total Items: 1,111
Seafloor and coastal area maps show geology and geomorphology.
August 24, 2012

Offshore and onshore geology and geomorphology

Smaller version of Offshore and Onshore Geology and Geomorphology (Sheet 10) from USGS Scientific Investigations Map 3225, California State Waters Map Series—Hueneme Canyon and Vicinity, California, as an example of the different kinds of maps (“sheets”) produced within a coastal map “block”.

Chaos Crags in Lassen Volcanic National Park
August 4, 2012

View of Chaos Crags in Lassen Volcanic National Park from Lassen Peak.

Chaos Crags is a series of lava domes that erupted about 1,100 years ago from the Lassen Volcanic Center.

July 26, 2012

PubTalk 7/2012 — Wind Energy and Wildlife

-- the challenges of wind-energy development and wildlife conservation

by Manuela Huso, Research Statistician

 

  • Wind-power development in the United States is increasing exponentially, with proposals to provide 20% of the country's total power by 2030.
  • High numbers of bird and bat carcasses at some wind farms
Collage of imagery of the seafloor, one is a photo, the others are generated from depth data with a computer.
July 25, 2012

Data Integration and Visualization, Hueneme Canyon and Vicinity, CA

 The map view in the center of the sheet is similar to the colored shaded-relief bathymetry map of Hueneme Canyon and vicinity (sheet 1 of this report). Numbered arrows show viewing directions of the perspective views on this sheet (figs. 1, 2, 3, 5, 6); the numbers indicate the figure number of the perspective view. The perspective views and bathymetric profiles in

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June 28, 2012

PubTalk 6/2012 — Scanning the Seafloor with Sound

--modern sonar reveals hidden hazards and resources

by David Finlayson, Marine Geologist 

 

  • The USGS seafloor mapping program supports scientific studies across most marine disciplines, including geologic mapping, mineral exploration and environmental characterization.
  • See dramatic, colorful imagery of
June 6, 2012

PubTalk 6/2012 — Exploring The Valley of Ten Thousand Smokes

-- a Centennial perspective of the Novarupta-Katmai eruption, the largest of the 20th century

By Judy Fierstein, USGS

 

  • 100 years ago on June 6, a 3-day explosive eruption at Novarupta on the Alaska Peninsula created the spectacular Katmai caldera and the Valley of Ten Thousand Smokes, called the eighth wonder of the
Attribution: Region 11: Alaska
May 31, 2012

PubTalk 5/2012 — Restoring the Wild Heart of South San Francisco Bay

--The South Bay Salt Pond Restoration Project

By Laura Valoppi, Lead Scientist

 

  • This is largest Western U.S. coastal wetlands restoration project, encompassing 15,100 acres of former salt ponds around the edge of South San Francisco Bay
  • The project will restore and enhance South Bay wetlands for endangered
April 26, 2012

PubTalk 4/2012 — ShakeAlert!

--building an earthquake early warning system for California

by Doug Given, USGS Earthquake Early Warning Coordinator 

 

  • Millions of Japanese citizens received advance warning of the 2011 magnitude 9.0 Tohoku earthquake -- can such a system be built for use in California?
  • University researchers and government
March 22, 2012

PubTalk 3/2012 — Projected Climate Change Impacts in California

--the consequences of increasing atmospheric greenhouse gases

Tom Suchanek, USGS Western Ecological Research Center Lead Scientist and Climate Change Coordinator

  • How will decisions that the global community makes about emissions likely affect the future of the western U.S.?
  • How will rising sea level likely affect
February 23, 2012

PubTalk 2/2012 — Mapping a Flood...Before it Happens

-- the new USGS FloodPath early warning system

By Marijke van Heeswijk, USGS Hydrologist

 

  • Historically, floods have been the most destructive natural hazard in the Nation
  • The USGS and National Weather Service have developed an early warning system that produces online maps of tomorrow's floods today
January 26, 2012

PubTalk 1/2012 — Lassen Volcanic National Park

--a wonderland of volcanoes and thermal features

By Patrick Muffler, Geologist Emeritus

 

  • Lassen Peak, the southernmost active volcano in the Cascade Range,explosively erupted in 1915, devastating nearby areas and raining volcanic ash as far away as 200 miles to the east
  • Lassen National Park, in addition to
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USGS
March 15, 2005

G. Brent Dalrymple has been awarded the National Medal of Science, the nation’s highest honor for scientific achievement. President Bush presented the medal during a White House ceremony on Mar. 14.

USGS science for a changing world logo
February 22, 2005

The U.S. Geological Survey today advised state and federal agencies about the threat of landslides and debris flows in eight counties of southern California due to recent rains, melting snow, and continuing rain forecast by the National Weather Service.

USGS
February 22, 2005

The U.S. Geological Survey today advised state and federal agencies about the threat of landslides and debris flows in eight counties of southern California due to recent rains, melting snow, and continuing rain forecast by the National Weather Service.

USGS science for a changing world logo
February 18, 2005

The USGS just released a report on the landslide hazards at La Conchita, the California coastal community in Ventura County that was struck by a landslide on Jan. 10 that killed 10 people and destroyed or damaged 36 houses.

USGS
February 18, 2005

The USGS just released a report on the landslide hazards at La Conchita, the California coastal community in Ventura County that was struck by a landslide on Jan. 10 that killed 10 people and destroyed or damaged 36 houses.

USGS science for a changing world logo
February 15, 2005

The U.S. Geological Survey today advised state and federal agencies about the continuing possibility of landslides and debris flows in eight counties of southern California due to recent rains, melting snow, and anticipated rain forecasted by the National Weather Service.

USGS
February 15, 2005

The U.S. Geological Survey today advised state and federal agencies about the continuing possibility of landslides and debris flows in eight counties of southern California due to recent rains, melting snow, and anticipated rain forecasted by the National Weather Service.

USGS science for a changing world logo
January 11, 2005

At 6 p.m. Pacific Standard Time, the U.S. Geological Survey advised state and federal agencies about the continuing possibility of landslides and debris flows in seven counties of southern California. The counties are: San Diego, Riverside, Orange, San Bernardino, Ventura, Los Angeles, and Santa Barbara. Here is the advisory that was issued:

USGS
January 11, 2005

At 6 p.m. Pacific Standard Time, the U.S. Geological Survey advised state and federal agencies about the continuing possibility of landslides and debris flows in seven counties of southern California.The counties are: San Diego, Riverside, Orange, San Bernardino, Ventura, Los Angeles, and Santa Barbara. Here is the advisory that was issued:

USGS science for a changing world logo
January 7, 2005

The U.S. Geological Survey today advised state and federal agencies about the continuing possibility of landslides and debris flows in seven counties of southern California due to recent rains, melting snow, and anticipated rain forecasted by the National Weather Service.

USGS
January 7, 2005

The U.S. Geological Survey today advised state and federal agencies about the continuing possibility of landslides and debris flows in seven counties of southern California due to recent rains, melting snow, and anticipated rain forecasted by the National Weather Service.

USGS science for a changing world logo
December 30, 2004

Due to recent heavy rainfall in southern California and the triggering of several debris flows in the mountain ranges west of Los Angeles, the U.S. Geological Survey (USGS) is issuing a landslide advisory for southern California. With the previous rainfall from the recent storms, the slopes in the southern California area are now closer to the conditions conducive to the inception of landslides.