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: 1,120
Poster laid out with photos, images, and text.
December 31, 2004

Big Sur Coastal Landslides

Large-scale poster describing USGS work.

The USGS studied air photos of the Big Sur coast taken in 1942 and 1994, in cooperation with the California Department of Transportation (Caltrans) and the University of California at Santa Cruz (UCSC).

We used the photographs to create 3D computer models. By comparing the two models, we can see the differences caused

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map of California shaded by GAMA deep aquifer study units
December 31, 2004

GAMA Public-supply Well (Deep Aquifer) Assessment Study Units

The GAMA program is a comprehensive assessment of statewide groundwater quality. The program is designed to help better understand and identify risks to groundwater resources. Groundwater is sampled at many locations across California in order to characterize its constituents and identify trends in groundwater quality. The results of these tests provide information for

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This poster shows information about the greater San Francisco Bay area, with text that talks about our research in the area.
December 31, 2004

Oceanography Beyond the Golden Gate

Large-scale poster describing USGS work.

The USGS measured ocean currents and temperatures off Central California as part of an international group of Federal, State, Academic, and private institutions. The project was part of a larger study that took nearly 14 years to finish. This group also studied geology, biology, and environmental issues in the Gulf of the

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Poster with illustrations of the underwater part of the ocean, with text about the work done in the area.
December 31, 2004

Tsunami Hazards in the Santa Barbara Channel

Large-scale poster describing USGS work.

The USGS, in cooperation with Moss Landing Marine Laboratory, mapped the slopes of the Santa Barbara Channel using sonar. We combined this with deep sea drilling records and seismic records to make these maps.

Large earthquakes can cause the very large underwater landslides that we found in the channel. These

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November 18, 2004

PubTalk 11/2004 — From Plane Tables to Pixels

The Revolution in Mapping at the U.S. Geological Survey

by Susan P. Benjamin, Research Geographer

  • Mapping the United States in the 19th century was arduous, dangerous work; flash floods, bears, and bandits were just a few hazards
  • By the mid-20th century, aerial photography, photogrammetry, and stereophoto pairs, allowed
October 30, 2004

PubTalk 10/2004 — Hot Oil, Frozen Ground, and Earthquakes

The Trans-Alaska Pipeline story-- so far, so good!

by George Gryc, Arthur Lachenbruch, and Robert Page, Scientists Emeriti

  • The 1968 discovery of North America.s largest oil fi eld on the Arctic coast posed the challenge of an 800-mile pipeline to carry hot oil across mountains, rivers, and the giant Denali Fault
  • The oil
Attribution: Region 11: Alaska
September 25, 2004

PubTalk 9/2004 — The Winemaker's Dance

Connecting Geology and Wine in Napa Valley

by David G. Howell, Geologist Emeritus

  • Does a glass of wine really contain 100 million years of geologic history ?
  • How did continental glaciation help shape the Napa Valley's soils?
  • Are the hills in Napa Valley that help control its microclimates really megalandslides
Picture of a agriculture field in California
September 1, 2004

Agriculture field in California

An agriculture field in California taken during field work for the Trends Lancover Change project.

August 26, 2004

PubTalk 8/2004 — Precipice of Survival

What is the Future of the Southern Sea Otter?

Featuring the new award-winning USGS video Precipice of Survival. The Southern Sea Otter by Stephen Wessells, introduced and discussed by sea otter researchers including Alisha H. Kage and M. Tim Tinker, Research Biologists 

  • The southern subspecies of sea otter, Enhydra lutris
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
Filter Total Items: 980
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.

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.