Users may select from a list of data sets to be spatially represented on a map, including active mines, cities, federal lands, geologic faults, value of mineral production, type of land cover, and sediment chemistry. Also available are spatial metadata files which contain detailed FAQs and documents describing the data represented. You can also specify projection, political boundaries, rivers, topography and bathymetry along with tectonic features such as faults. Maps are displayed online as gif images and may be downloaded in postscript or Adobe Illustrator formats. Maps earthquakes occuring in California during the last hour, last day, and last week.
Clickable map allows one to zoom for more detail.
Includes links to special maps for Long Valley, Los Angeles, and San Francisco. Prepared under the authority of the Seismic Hazards Act of 1990, they are used by cities and counties to regulate development. A Seismic Hazard Mapping Program Factsheet more fully describes the program. The Index to Seismic Hazard Zone Maps contains links to .jpeg and more detailed .gif images of each map which are also available for purchase in full-scale print format. The alphabetized List of Available Seismic Hazard Mapping Program Products also links to available maps as well as accompanying evaluation reports and gis files.