Please Note: This is an archived website. It is recommended to search on-line for revised or newer information.

USGS - science for a changing world

GMEG - Geology and Geophysics


Other Links

Open House 2000

Open House 2000, Menlo Park, California
The Western Region of the USGS hosted a weekend-long Open House this past Spring. Visit the website to learn about the San Francisco Bay Project exhibits and fill out an on-line evaluation form if you were able to attend!



USGS Earthquake Information
Maps and magnitudes of the latest temblors in California and elsewhere, plus tips on how you can prepare

The Great 1906 San Francisco Earthquake
Pictures and descriptions of one of the most significant earthquakes of all time and the most devastating for the Bay area

ABAG Earthquake Site
Ground shaking hazard maps and earthquake preparedness information

CGS Seismic Hazard Mapping
Earthquake-triggered fault rupture, landslide, and liquefaction hazard maps

USGS Digital Data

Bay Area Regional Database (BARD)
USGS Digital Elevation Models (DEM's), Digital Line Graphs (DLG's), and more for the Bay area -
if you are interested in digital geologic maps, visit the San Francisco Bay Geologic Mapping Page

US GeoData
USGS Digital Elevation Models (DEM's), Digital Line Graphs (DLG's), and more for a large portion of the United States


Northern California Landslide Working Group (NCLWG)
Information on landslides in the Northern California

The National Landslide Information Center (NLIC)
Information on landslide hazards all across the country

The National Landslide Hazards Program
USGS group which studies ground-failure problems nationally and worldwide

Field Trips and Field Trip Guides

Field Trip to the Hayward Fault Zone
A guide to visiting an active plate margin in the Bay Area's backyard.

Field Trip to the Fitzgerald Marine Preserve
A guide to visiting a fossil playground in the Bay Area's backyard.

Field Trip Photos and Remembrances:

June 1999 -
Investigation of regional geologic relations - from landslides to earthquakes and the underpinning strata. The trip begins in the East Bay with the Mission Peak landslide and the Hayward fault, and continued up into Napa Valley, ending with the Maacama fault.

November 1999 -
Visit the large Thornton Beach landslide -including the part that is affecting highway 35 and the recently completed executive course at the Olympic Golf Club - the repair of the El Nino Avelon Drive slide, and the hillside failures along Westline Drive near Mussel Rock. Learn about the Merced formation, and about the fault step-over along the San Andreas. See various attempts (some of which were failures) at engineering landslides to keep them from moving.


California Geological Survey, Department of Conservation

National Parks Service

Federal Emergency Management Agency

California Office of Emergency Services

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