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: 1,107
July 29, 2004

PubTalk 7/2004 — Secrets in Stone

The Role of Paleomagnetism in the Evolution of Plate Tectonic Theory Video Presentation

Presentation of the award-winning USGS video "Secrets in Stone" (35 minutes), introduced by Jack Hillhouse, Research Geophysicist, and followed by a tour of the USGS Paleomagnetics Laboratory

  • Crucial discoveries in the early 1960.s were made
June 24, 2004

PubTalk 6/2004 — From Strawberry Fields to the Ozone Layer

The Methyl Bromide Story

By Laurence G. Miller, Biogeochemist

  • Methyl bromide (CH3Br) is an important agricultural pesticide widely used in growing strawberries and other field crops
  • Methyl bromide---much of it from natural sources---is one of the gases contributing to destruction of Earth's ozone layer
  • No
May 27, 2004

PubTalk 5/2004 — Delta Revival: Restoration of a California Ecosystem

Video presentation and discussion

Ecologist Jim Cloern will introduce the video Delta Revival, produced jointly by the USGS and the CALFED Bay-Delta Authority. 

USGS Scientists wil answer your questions about this documentary, which shows:

  • biologists, chemists, physical scientists, and engineers working together
Image: California Ground Squirrel (Spermophilus beecheyi)
May 1, 2004

California Ground Squirrel (Spermophilus beecheyi)

Squirrel stepping out from it's ground burrow.

Attribution: Ecosystems
Image: California Ground Squirrel (Spermophilus beecheyi)
May 1, 2004

California Ground Squirrel (Spermophilus beecheyi)

Squirrel stepping out from it's ground burrow.

Attribution: Ecosystems
April 22, 2004

PubTalk 4/2004 — Science, Society, and the Survey

50 Years of the USGS in Menlo Park

By David G. Howell, Geologist

Hear about some of the scientific highlights from 1954 to 2004 --

  • The search for strategic minerals
  • Exploring the high seas
  • The birth of astrogeology
  • Advancing the theory of plate tectonics
  • From topo maps to digital GIS
March 4, 2004

PubTalk 3/2004 — Mapping the American West

Clarence King and the 40th Parallel Survey

By James G. Moore, Geologist

  • After completing a geology degree at Yale and coming West in a wagon train, Clarence King worked with the California Geological Survey and was in the field party that discovered Mount Whitney
  • King led the United States Geological Exploration of the
February 26, 2004

PubTalk 2/2004 — Life and Death of Hawaiian Coral Reefs

New Studies Track the Life Cycle of Maui's Changing Reefs

By Michael E. Field, Marine Geologist & Curt D. Storlazzi, Coastal Oceanographer

  • How are coral reefs changing, and why is it a concern?
  • Agents of change on Maui's reefs have both natural and human causes
  • Coral eggs and sperm released during
Image: California Red-legged Frog
February 18, 2004

California Red-legged Frog

California red-legged frog (Rana draytonii) surfaces in a pond in Point Reyes National Seashore, CA.

January 22, 2004

PubTalk 1/2004 — Roving Around Mars

Adventures in Exploring the Red Planet

By Devon M. Burr & Michael H. Carr, Planetary Geologists

 

  • January 2004 will see two NASA rovers land on Mars to analyze rock and soil and measure environmental conditions
  • By January, a European Mars probe and a Japanese orbiter should also be studying the planet's
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
Filter Total Items: 984
USGS
June 22, 1998

Gasoline-related compounds were found in water samples from Lake Tahoe by U.S. Geological Survey scientists during the July through September 1997 boating season. MTBE (methyl tert -butyl ether), a gasoline additive, was found in non-toxic concentrations throughout the lake, as deep as 90 feet. 

USGS
June 10, 1998

Visitors to the U.S. Geological Survey’s exhibit booth at the Monterey Bay Oceans Fair will be able to "feel the bay," by squishing different types of San Francisco Bay muds through their fingers, view microscopic critters that live in those muds, and view maps of the seafloor, at the fair, from noon to 8 p.m., Friday, June 12, 1998, in Monterey, Calif.

USGS
June 5, 1998

Residents of the San Jose area who would like to become partners with the USGS in monitoring earthquake activity in the Santa Clara Valley this summer can become part of that project by offering space in their backyards to the USGS.

USGS
June 5, 1998

The Lake Tahoe Data Clearinghouse, a virtual, web-based project, providing everything from digital maps of the lake and surrounding basin to notes from recent presidential forum meetings, is now on line at http://blt.wr.usgs.gov/

USGS
April 21, 1998

The U.S. Geological Survey has released a series of reports on results of a five-year study on, the quality of water in 20 major basin regions throughout the nation, including the San Joaquin-Tulare Basins, which cover most of central California and are a major source or drinking water for most of the State’s population. The report, "Water-Quality in the San Joaquin-Tulare Basins, California) 1992

USGS
April 15, 1998

A news conference to explain the post-El Nino aerial survey that is being conducted along the Pacific coast is scheduled for 1 p.m., Thursday, April 16, at the Delmonte Jet Center, adjacent to the Monterey Peninsula Airport, on the east side of Monterey.

USGS
April 10, 1998

Properly assessing the impacts of powerful storms associated with El Nino which have brought unprecedented erosion to the United States’ west coast is an enormous task. NASA , the U. S. Geological Survey (USGS) and the National Oceanic and Atmospheric Administration (NOAA) are combining efforts to provide public officials with the tools they need to accurately assess coastal erosion.

USGS
March 19, 1998

Dr. Milton Friend, director of the USGS National Wildlife Health Center, has been named by Interior Secretary Bruce Babbitt to serve as chairman of the Salton Sea Science Subcommittee.

USGS
March 18, 1998

Southern California is not likely to experience a "huge earthquake,"according to two scientists with the U.S. Geological Survey.

USGS
March 16, 1998

Although the San Andreas fault near Parkfield, Calif., has not yet produced a predicted magnitude-6 earthquake, geodetic measurements now indicate that fault movements near Parkfield sped up in 1993, according to U.S. Geological Survey scientist Evelyn Roeloffs.

USGS
March 16, 1998

Earthquakes, as well as heavy rains, can cause landslides, but with the completion of a new U.S. Geological Survey mapping project, scientists and planners can see where those landslides might be triggered by southern California’s next large earthquake.

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.