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: 1,109
rocks, boulder, broken furniture, fallen trees, and other debris surround trees and cover the ground in Cable Canyon
January 9, 2004

Post-fire Debris Flow

Debris Flow in Cable Canyon following the 2003 Old Fire in the San Bernardino Mountains, California.

Water quality sampling using a Niskin sampler from the Research Vessel Polaris at sunset on San Francisco Bay.
December 31, 2003

Water quality sampling on San Francisco Bay

USGS conducts water quality sampling to describe changes in water quality along the deep channel of the San Francisco Bay-Delta system. Sampling includes continuious sampling and discrete sampling. Here a water discrete water sample is collected using a Niskin sampler at sunset in north San Francisco Bay.

Attribution: Water Resources
Map of study areas and key geographic features in Sonoma and Mendocino Counties.
December 31, 2003

Map of study areas in Sonoma and Mendocino Counties.

Map of study areas and key geographic features in Sonoma and Mendocino Counties.

southern California neighborhood scarred by fire
December 15, 2003

Southern California Neighborhood Scarred by Wildfire

Southern California neighborhood scarred by wildfire.

December 11, 2003

PubTalk 12/2003 — What's Happening to Alaska's Glaciers?

Their Dynamic Response to Changing Climate and Other Factors

by Bruce F. Molnia, Research Geologist 

 

  • Although the oceans contain more than 95% of the Earth.s water, glaciers hold 75% of the fresh water
  • If all the world's glaciers melted, sea level would rise more than 250 feet
  • Of Alaska.s 2,000 or so
Attribution: Region 11: Alaska
November 20, 2003

PubTalk 11/2003 — Clean Power from the Earth's Heat

The Present and Future of Geothermal Energy

by John Sass, Geophysicist

 

  • Since ancient times, people have sought out geothermal hot springs for bathing, cooking, and supposed healing effects
  • In Iceland, nearly half the electrical power and all space heating are derived from geothermal sources
  • For Iceland
Image: Endangered California Condor
October 18, 2003

Endangered California Condor

An endangered California condor flies over the Bitter Creek National Wildlife Refuge, California. USGS scientists are helping managers understand how California condors use their habitat, gaining valuable information that will help inform not only which potential energy development sites are likely to have the least impact on condors but also which areas of Oregon might be

...
Attribution: Ecosystems
September 25, 2003

PubTalk 9/2003 — Beneath Crater Lake

An underwater volcanic landscape tells a complex tale

by Charles R. Bacon, Geologist
Visualizations presented by David W. Ramsey, Geologist

 

  • Crater Lake, a jewel of the National Park system, partly fills a caldera basin formed during a giant volcanic eruption 7,700 years ago
  • Deepest of all U.S.
August 28, 2003

PubTalk 8/2003 — Human Footprints on the Web of Life

Biodiversity and Increasing Population and Development in California

by Robert N.Fisher, Research Zoologist

  • Why does California lead the country in endangered species--why are so many reptiles and amphibians in decline?
  • Learn about the California lizard that keeps Lyme disease in check and the butterflies that prevented
July 31, 2003

PubTalk 7/2003 — Molten Paradise

Video Presentation and Discussion

Featuring the award-winning USGS video Molten Paradise-Kilaea Volcano by Stephen Wessells, introduced and discussed by Robert I. Tilling, Volcanologist

See-

  • The dramatic nonstop Pu'u O'o eruption, now entering its 21st year
  • Rivers of glowing lava flow through underground
Trawling for Delta Smelt
July 31, 2003

Trawling for Delta Smelt aboard the USGS Research Vessel Sentinel

Trawling for Delta Smelt using a Kodiak Trawl in the Sacramento River aboard the USGS Research Vessel Sentinel.

June 26, 2003

PubTalk 6/2003 — The Quakes, They Are A-comin'

New Estimates of Earthquake Hazard and Risk Across the Bay Region

By Michael Blanpied, Geophysicist

 

  • A USGS-led Working Group has used new ideas about Bay Area faults and earthquakes to revise the probabilities for future quakes
  • The slow movement of the Earth.s plates builds up stress that is relieved in violent
Filter Total Items: 985
USGS
March 2, 1998

Secretary of the Interior Bruce Babbitt today was joined by Congresswoman Anna Eshoo in announcing a long-term lease that will keep the U.S. Geological Survey (USGS) in its historic Menlo Park, Calif., location. USGS Acting Director Tom Casadevall joined Babbitt and Eshoo for the announcement at an all-employees meeting at the Menlo Park campus.

USGS
February 11, 1998

Many of the tarballs washing up on the shores of Monterey Bay are most likely from natural seeps from the floor of Monterey Bay and the continental shelf, rather than from ruptured oil tankers and other man-made occurrences, according to scientists from the U.S. Geological Survey in Menlo Park, Calif.

USGS
February 6, 1998

PUBLIC LECTURE: "Natural History of Coastal Redwoods -- Fire, Floods and Fog," is the subject of the U.S. Geological Survey’s FREE Public Lecture on THURSDAY, FEBRUARY 26, 1998. 

USGS
February 3, 1998

As heavy rains continue to pound northern and central California, hydrologists with the U.S. Geological Survey are reporting small stream flooding from Ventura County on the south to Eureka on the north.

USGS
December 29, 1997

A light earthquake, preliminary magnitude 4.1 according to the U.S. Geological Survey, occurred at 3:02 PM EST (12:02 PM local time) Monday, Dec 29, 1997. The epicenter is located 5 miles SE of Mammoth Lakes, or 33 miles WNW of Bishop, CA. 

USGS
December 10, 1997

A striking full-color map showing permafrost and ground ice over the Arctic and surrounding continental land masses has been released by the U.S. Geological Survey and will be displayed at the American Geophysical Union meeting in San Francisco this week. 

USGS
December 10, 1997

The ability to learn the magnitude and location of an earthquake almost as it’s happening and track rising flood waters are examples of the kind of "real-time" monitoring that enables anyone with a personal computer and access to the Internet to obtain information about natural hazards as they occur.

USGS
December 10, 1997

They don’t have bells and whistles, and you’ll probably never see one on "Baywatch," but the U.S. Geological Survey’s real-time, telemetered stream-gauges are proving their worth when it comes to saving lives and lessening flood damage

USGS
December 8, 1997

"Heavy breathing" at Yellowstone and heavy metals in the nation’s surface and ground-water are two subjects of more than 100 oral and poster presentations by scientists from the U.S. Geological Survey, at the annual meeting of the American Geophysical Union (AGU) in San Francisco, Dec. 8-12.

USGS
December 7, 1997

Otis Redding may have waxed eloquently about "Sitting By the Dock of the Bay," but its flying over the floor of San Francisco Bay that has scientists at the U.S. Geological Survey humming a happy tune these days.

USGS
December 7, 1997

The Hayward Fault is still the most dangerous earthquake fault in the San Francisco Bay area, according to U.S. Geological Survey scientists who will present the results from their latest research on that fault at the annual meeting of the American Geophysical Union, in San Francisco this week.

USGS
December 3, 1997

Free public lecture: U.S. Geological Survey Geologist Henry Moore presents the latest "dirt" on Mars; viewing Mars from Sojourner at 7 P.M. in the City Council Chambers, 701 Laurel Street, Menlo Park, Calif.