• ABAG Earthquake Maps and Information
• California Geological Survey
• California Seismic Safety Commission
• San Francisco Bay Earthquake Hazards Project
• Earthquake Hazard Maps of the San Francisco Bay Area
• Earthquake Information, U.S. Geological Survey
• How Earthquakes Are Measured
• Interactive Fault Maps, U.S. Geological Survey
• Northern California Earthquake Data Center Home Page, UC Berkeley
• Photographs of the effects of major earthquakes in California and elsewhere
• Recent Earthquakes in California, U.S. Geological Survey
• Southern California Earthquake Center
• UC Berkeley Seismological Laboratory
• USGS Northern California Geo Hazards
• Virtual Earthquake

Fire

• CERES California Wildfire Information
• California Department of Forestry and Fire Protection
• Recent California Fires

Flood

• CERES Current Flood Information
• National Weather Service Rainfall Page

Wind

• California Emergency Digital Information Service

Volcanoes

• California: Volcanoes and Volcanic Areas, USGS
• USGS Cascade Volcano Observatory
• Volcano World
• Cascade Range Volcanoes, USGS
• Mt. Shasta Online Images
• Update on Current Volcanic Activity

See Also: Educators: Natural Disturbances