California Agencies:
• California Geological Survey (formerly
   the Division of Mines and Geology)
• California Department of Water Resources
• California State Mining and Geology Board
• Board for Professional Engineers, Land Surveyors,
   and Geologists (BPELSG)
• Southern California Earthquake Center
• Earthquake Engineering Research Center
• State Water Resources Control Board
• California EPA Home Page

Other California Links:
• Groundwater Resources Association of California
• California Council of Geoscience Organizations
• California Seismic Safety Commission

• B4 Digital Data on the San Andreas Fault

Federal Agencies:
• US Geological Survey
• USGS National Earthquake Information Center
• USGS Earth Science Publications
• USGS Geologic Hazards
• USGS Water Resources of California
• USGS Ground-Water Software
• Federal Emergency Management Agency

Professional Societies:
• Association of Environmental and Engineering Geologists - Headquarters 
• National Association of State Boards of Geology
• American Geological Institute
• Geological Society of America
• Geological Society of America Engineering Geology Division