USGS Frequently Asked Questions

Answer:

A wide variety of maps are available from the USGS national mapping program in both paper and digital form. Check our list of earthquake and fault maps first. If you don't find what you are looking for there, the following links also have map information:

This Dynamic Planet: World Map of Volcanoes, Earthquakes, Impact Craters, and Plate Tectonics
Dibblee Geological Foundation Maps - for some of California, with roads and towns
California Geological Survey
Other State Agencies

You can also contact your state geological survey and/or your county geologist. The Association of American State Geologists has compiled a directory of state geological organizations, which provides addresses, telephone numbers, and staff.