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
PubTalk 10/2006 — The Parkfield 2004 Earthquake
Lessons From the Best-Recorded Quake in History
by Andy Michael, Geophysicist
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- To record high-quality measurements close to a large earthquake, the right instruments have to be in the right place at the right time
- Such a convergence happened, for the fi rst time ever, on September 28, 2004, when a magnitude 6
Salton Sea Sunset
Sunset on the southeast side of the Salton Sea, CA.
PubTalk 9/2006 — Water Odysseys
Surface-water and ground-water flow in the Santa Clara Valley
by Randall T. Hanson, Research Hydrologist
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- What has deep drilling in the valley found about ground-water flow?
- A new computer model improves our understanding of water-flow patterns
- Learn how underground water makes the ground rise and fall
PubTalk 8/2006 — Hidden Faults Under Silicon Valley
Do new discoveries change our view of Santa Clara Valley earthquake hazards?
by R. D. Catchings, GeophysicistÂ
- Seismic profiles have revealed the valley.s deep structure and previously unknown faults
- Earthquakes and seismic reflection images suggest some reverse faults beneath the valley that are not seen at the surface
Landsat 7 infrared image of wildfires near Yucca Valley, CA. July 2006
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Landsat 7 infrared image of wildfires near Yucca Valley, California. July 2006
PubTalk 7/2006 — Uncovering Silicon Valley
Weaving a tale of three sedimentary basins
by Victoria E. Langenheim, Geophysicist
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- Geophysical probing reveals the geology under Santa Clara Valley
- What does the new 3-D view tell us about the San Andreas fault system?
- How does this affect earthquake hazards and ground-water resources?
- Was the
California vineyard
A photo of a California (ecoregion 6) grape vine taken during field verifcation of Land Cover Trends project.
PubTalk 6/2006 — Geology on Conveyor Belts
New ideas on Bay Area evolution from a decade of geologic mapping
By Russ Graymer, Geologist
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- What was the Bay Area like during the Age of Dinosaurs?
- Learn about the distant origins of some rocks seen around the bay
- Hear how the San Andreas fault system has rearranged the region.
- Volcanoes in
PubTalk 5/2006 — What Lies Beneath?
Concealed sedimentary basins and hidden oil under Silicon Valley
By Richard G. Stanley, GeologistÂ
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- Before computers and cubicles there were orchards-- and a few oil wells, too
- Learn about the "oil boom" in Los Gatos about 100 years ago
- See how historical records from old oil wells, together with modern
Fallow field with exurban development in the background in CA
Fallow field with exurban development in the background in California. This photo was taken for the Trends Landcover project during field work.Â
PubTalk 4/2006 — California's Greatest Fault
How historical data from 1906 have shed light on the San Andreas Fault
By Carol S. Prentice, GeologistÂ
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- What insights are gained from merging original 1906 observations and field notes with today's earthquake science?
- Data collected during and after the catastropic 1906 earthquake prove to be essential to-
U.S. Geological Survey Director, Dr. Charles ’Chip’ Groat, will deliver the keynote address at Monday’s opening session of the 20th annual user conference of the Environmental Systems Research Institute (ESRI), at the San Diego Convention Center.
In response to the Cerro Grande/Los Alamos wildfire, the U.S. Geological Survey has entered into an agreement with the U.S. Army Corps of Engineers to establish a streamflow gage and collect water-quality data from the Rio Grande upstream from Cochiti Reservoir to determine the effects of the fire upon the water system.
The spring 2000 survey of 2,317 California sea otters indicates an overall increase by 10.9 percent since the 1999 spring survey of 2,090 individuals.
By combining techniques developed by Leonardo da Vinci with today’s computer applications, an artist and two scientists at the U.S. Geological Survey in Menlo Park, Calif., have produced one of the most dramatic and beautiful maps of the United States, ever published.
A report summarizing suspended-solids concentrations in San Francisco Bay from October 1997 through September 1998 has been published by the U.S. Geological Survey.
A rare opportunity to watch as waterfowl biologists track northern pintail ducks is available by visiting a U.S. Geological Survey website called "Discovery for Recovery."Â
Workshop on "Restoring Pacific Rivers: Evaluating the Progress of Watershed Restoration for Salmon."
The Hector Mine earthquake that occurred Oct. 16, 1999, in the Mojave Desert east of Los Angeles, woke a lot of people up but injured no one and caused a minimal amount of property damage.
The rhododendrons and azaleas that create a spectacular display of color each year at the U.S. Geological Survey in Menlo Park, will be at their peak for the next few weeks, and many of the exotic plants will be at their best when the USGS holds its triennial Open House, May 13 and 14, at the center at 345 Middlefield Road in Menlo Park.
The most acidic waters ever measured are percolating through an underground mine near Redding, Calif., according to scientists with the U.S. Geological Survey.
Recent rains may have made things unstable on some parts of San Bruno Mountain, south of San Francisco, but one fault the mountain doesn’t have is a fault; at least none that will cause any problems, according to scientists at the U.S. Geological Survey.
If certain employees of the U.S. Geological Survey are begging for used tennis balls, it must mean that something big is brewing. And it is.
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Locations
Southwest Regional Director's Office
Phone: (916) 278-9551
Fax: (916) 278-9566
Pacific Coastal and Marine Science Center
Phone: 831-460-7401
Fax: 831-427-4748
Sacramento Projects Office (USGS California Water Science Center)
Phone: 916-278-3000
Fax: 916-278-3070
Western Ecological Research Center - Headquarters
Phone: (916) 278-9485
Fax: (916) 278-9475
Geology, Minerals, Energy and Geophysics Science Center
Phone: (650) 329-4881
Earthquake Science Center
Western Geographic Science Center - Main Office
San Diego Projects Office (USGS California Water Science Center)
Phone: 619-225-6100
Fax: 619-225-6101
USGS California Volcano Observatory (CalVO package delivery)
askcalvo@usgs.gov
Phone: 650-329-5083
Truckee Field Office (USGS California Water Science Center)
Phone: 530-587-0910
Fax: 530-587-0914
Redding Field Office (USGS California Water Science Center)
Phone: 530-246-5282
Fax: 530-246-0717
Ukiah Field Office (USGS California Water Science Center)
Phone: 707-468-4040
Fax: 707-468-4022
Redlands Field Office (USGS California Water Science Center)
Phone: 909-798-3272
West Sacramento Projects Office (USGS California Water Science Center)
Phone: 916-617-2799
Eureka Satellite Office (USGS California Water Science Center)
Phone: 707-442-3169
Fax: 707-445-7860
Sacramento Field Office (USGS California Water Science Center)
Phone: 916-381-0207
Fax: 916-381-0556
Santa Cruz Field Office (USGS California Water Science Center)
Phone: 831-460-7494
Santa Maria Field Office (USGS California Water Science Center)
Phone: 805-928-9539
Fax: 805-928-9220
Poway Field Office (USGS California Water Science Center)
Phone: 858-679-4015
Fax: 858-679-4019
USGS Menlo Park Library
men_lib@usgs.gov
Phone: 650-329-5027
Fax: 650-329-5132