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
Aqueducts move water in the past and still today, as in California
Aqueducts move water - today and in ancient times
Be it 2,000 years ago in ancient Rome, Italy or today in California, aqueducts were and are essential to get water from a place where it exists in ample supply to where it is scarce. Aqueducts aren't a high-tech modern invention—the ancient Romans had aqueducts to bring water from the mountains above
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Multibeam bathymetry of San Francisco Bay
A multibeam bathymetric survey that produced unprecedented high resolution images of the mouth of San Francisco Bay was conducted in 2004 and 2005. The survey, performed over forty-four days by the Seafloor Mapping Lab at California State University, Monterey Bay, consisted of 1,138 track lines, 1.1 billion soundings, and covered an area of 154 km2 (60 mi2
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San Bernardino, Cone Camp Multiple-depth Monitoring Well Sites
Looking east towards USGS Site ID: 340541117074401-6, Site Name: 001S002W07Q001S-6S, Local name: SBCC 1-6 in San Bernardino County, California.
PubTalk 12/2006 - Mojave
Title: The Mojave National Preserve: Geology and Water Shape Desert Plant Communities
- One of the largest units in the National Park System, the Mojave National Preserve was established in 1994
- The Preserve encompasses great sand dunes (including "singing sands"), young volcanic features, forests of Joshua trees, and fields of
PubTalk 12/2006 — The Mojave National Preserve
Geology and Water Shape Desert Plant Communities
by David Miller, Geologist and John Nimmo, Soil Hydrologist
- One of the largest units in the National Park System, the Mojave National Preserve was established in 1994
- The Preserve encompasses great sand dunes (including "singing sands"), young volcanic features,
PubTalk 11/2006 — Drills, Spills, and Chills
The inside story on USGS estimates of Alaskan oil and gas resources
by Ken Bird and Rick Stanley, Geologists
- See the basic elements of a petroleum system.where the oil comes from and where it goes
- USGS resource assessments in Alaska have a long history and have changed over time
- Learn how the newest
PubTalk 10/2006 — The Parkfield 2004 Earthquake
Lessons From the Best-Recorded Quake in History
by Andy Michael, Geophysicist
- 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
- 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, Geophysicist
- 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
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
- 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
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.
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.
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;
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
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
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.
There’s good news and bad news for the Sacramento River system, according to a new report from the U.S. Geological Survey.
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.
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.
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.
Power outages that may occur on the San Francisco peninsula will not affect the earthquake monitoring ability of the U.S. Geological Survey in Menlo Park.
Power outages that may occur on the San Francisco peninsula will not affect the earthquake monitoring ability of the U.S. Geological Survey in Menlo Park.
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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
Fort Collins Science Center
Phone: 970-226-9100
Fax: 970-226-9230
USGS California Volcano Observatory (CalVO package delivery)
askcalvo@usgs.gov
Phone: 650-329-5083
Poway Field Office (USGS California Water Science Center)
Phone: 858-679-4015
Fax: 858-679-4019
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
USGS Menlo Park Library
men_lib@usgs.gov
Phone: 650-329-5027
Fax: 650-329-5132