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: 1,116
Photo of waterbirds feeding at a flooded agricultural field.
March 31, 2008

Waterbirds Feeding at Flooded Field

Credit Douglas Barnum/USGS. A photo of white-faced ibis and gulls feeding on a flooded agricultural field post-harvest. 

Cow in field
March 28, 2008

Cattle on rangeland on Mission Peak, near Fremont, CA.

Cattle on rangeland on Mission Peak, near Fremont, California, in the San Francisco Bay area. David Amme, California Native Grasslands Association.

March 27, 2008

PubTalk 3/2008 — Wetland Revival

Restoring San Francisco Bay Salt Ponds to Wetlands Habitat

A video production introduced and discussed by Steven E. Schwarzbach, Director, USGS Western Ecological Research Center

Nearly 15,000 acres of salt ponds in the southern San Francisco bay were purchased in 2003 for restoration by a partnership of Federal, State, and nonprofit

Image: California Brown Pelicans
March 20, 2008

California Brown Pelicans

Birds found in and around the Salton Sea, California.

Attribution:
February 28, 2008

PubTalk 2/2008 — Alaska's Rivers of Ice

USGS scientist Bruce Molnia, discusses the impact of changing climate and conditions on Earth's glaciers

By Bruce Molnia, Geologist

See excerpts from this full-length film feature showing:

  • How and where glaciers form
  • How scientists study glaciers and climate
  • The processes of glacial erosion and
January 31, 2008

PubTalk 1/2008 — The Indonesian Mud Crisis

Long-lived mud "eruption" inundates housing and infrastructure

By Thomas J. Casadevall, Geologist

In May, 2006 hot, dark mud appeared from a fissure covering more than 10 square kilometers, displacing more than 30,000 people. The ongoing mud extrusion has also damaged or broken important transportation and communication infrastructure,

Photograph of Natural Bridges State Beach, Santa Cruz, CA
January 21, 2008

Natural Bridges State Beach, Santa Cruz, California

Photograph of the coastal region of Natural Bridges State Beach in Santa Cruz, California

A large poster has photos, maps, and text on it to show what research was done in Pleasure Point, Santa Cruz, California.
December 31, 2007

Does Pleasure Point Need a Seawall?

The USGS, in cooperation with Santa Cruz County and the California Department of Boating and Waterways, studied the seacliffs, ocean floor, and waves of Pleasure Point, California.   We created detailed maps of the seacliffs and ocean floor using LIDAR laser scanners and sonar. We measured wave action using digital photos and videos, a wave gauge, and a current meter. We

...
December 13, 2007

PubTalk 12/2007 — Exploring Antarctica's Frozen Frontier

The USGS Antarctic Program from the 1957 International
Geophysical Year to the 2007 International Polar Year

By Jerry Mullins, Coordinator, USGS Antarctic, Arctic and Canadian Programs
and John Behrendt, USGS Geophysicist Emeritus

 

 

  • Learn about USGS surveying and mapping of "The Frozen Continent"
November 15, 2007

PubTalk 11/2007 — Disasters, Dust, .... and Danger?

Using geoscience to help understand whether health risks lurk in particles produced by disasters

By Geoff Plumlee, Research Geochemist 

 

  • Valley Fever outbreak following the 1994 Northridge, California earthquake
  • World Trace Center collapse
  • Hurricane Katrina flooding
  • 1996 Marinduque,
USGS scientists navigate personal water craft around San Francisco Bay, collecting bathymetric data.
October 26, 2007

Collecting Bathymetric Data in San Francisco Bay

USGS scientists Patrick Barnard (left) and Jeff Hansen navigate personal watercraft equipped with GPS and echo sounders through the waters of San Francisco Bay. They are collecting bathymetric, or depth, information in order to create maps of the bottom of the Bay. The maps will be used to determine how the morphology or shape of the Bay floor changes through time.

October 25, 2007

PubTalk 10/2007 — Fire As An Ecosystem Process

Past, Present, And Future

By Jon E. Keeley, Research Ecologist 

 

  • Plants have evolved over hundreds of millions of years with fire.
  • Are human-induced changes threatening naturally fire-prone ecosystems?
  • How has human suppression of fire affected different ecosystems?
  • Will predicted climate
Filter Total Items: 986
USGS science for a changing world logo
April 18, 2001

The most common information available immediately following an earthquake is the location and magnitude. However, what scientists really want to know is where the shaking was felt, and in the case of emergency response, where it shook the most. Two new systems can now answer these questions within minutes following an earthquake. Both are available on the Internet.

USGS
April 18, 2001

Following the great 1906 San Francisco earthquake, a large number of distant aftershocks or triggered earthquakes occurred much farther away from the fault than previously realized, according to scientists at the U.S. Geological Survey.

USGS
April 17, 2001

Eyewitness accounts of the 1906 earthquake in San Francisco agree on a number of striking points, according to Jack Boatwright of the U.S. Geological Survey.

USGS science for a changing world logo
April 16, 2001

On the 95th anniversary of the great San Francisco earthquake, scientists from the U.S. Geological Survey will join their colleagues in the Seismological Society of America (SSA) to discuss new findings on the 1906 earthquake that devastated San Francisco; the Nisqually earthquake that lightly slapped the Seattle-Tacoma area six weeks ago; and several other large earthquakes.

USGS
April 16, 2001

On the 95th anniversary of the great San Francisco earthquake, scientists from the U.S. Geological Survey will join their colleagues in the Seismological Society of America (SSA) to discuss new findings on the 1906 earthquake that devastated San Francisco;

USGS science for a changing world logo
April 6, 2001

A number of researchers from the U.S. Geological Survey will join about 900 of their fellow geoscientists from around the world to discuss updates and unanswered questions about the Northridge earthquake and new earthquake possibilities in southern California 

USGS
April 6, 2001

A number of researchers from the U.S. Geological Survey will join about 900 of their fellow geoscientists from around the world to discuss updates and unanswered questions about the Northridge earthquake and new earthquake possibilities in southern California

USGS science for a changing world logo
March 22, 2001

There’s good news and bad news for the Sacramento River system, according to a new report from the U.S. Geological Survey. "The water quality of the Sacramento River and its major tributaries, such as the Feather and American rivers, is generally healthful for drinking and irrigation water, recreation, and the protection of fish and other aquatic life," said USGS Project Manager,Joseph Domagalski.

USGS
March 22, 2001

There’s good news and bad news for the Sacramento River system, according to a new report from the U.S. Geological Survey.

USGS science for a changing world logo
March 21, 2001

The highly developed and urbanized area of coastal southern California is host to one of the richest regions of amphibians and reptiles in the United States, and includes several species with state- and federal-protected status.

USGS
March 21, 2001

With more than 400,000 volumes and 35,000 maps, the library of the U. S. Geological Survey, at 345 Middlefield Road, Menlo Park, is the largest earth-science library on the West Coast, and part of the largest earth sciences library system in the world.

USGS
March 21, 2001

The highly developed and urbanized area of coastal southern California is host to one of the richest regions of amphibians and reptiles in the United States, and includes several species with state- and federal-protected status.