This site from the US Geological Survey provides information and updates about the recent earthquakes in California and Nevada. Data include magnitude, time, location, coordinates, and depth for each earthquake, and each data page points to additional sources of information for the given earthquake. Users can access information via a clickable map of California or specialty maps of Long Valley, Los Angeles, and San Francisco. Alternately, the site allows visitors to select an earthquake from a list of big earthquakes or a list of all earthquakes.