Link to USGS home page.
General Information Product 5
  About USGS /  Science Topics /  Maps, Products & Publications /  Education / FAQ

Ground-shaking hazard from earthquakes

thumbnail image of postcard front

U.S. Geological Survey Earthquake Hazard Map for the United States showing earthquake ground accelerations (horizontal) having a 10 percent probability of being exceeded in 50 years for a firm rock site condition. This map is based on seismicity and fault-slip rates and takes into account the frequency of occurrence of earthquakes of various magnitudes. Locally, hazard may be greater than that shown, because site geology may amplify ground motions. Maps for other parameters and probabilities of exceedance may be found on the Internet at http://eqhazmaps.usgs.gov/.

Version 1.0

Posted July 2005

Part or all of this publication is presented in Portable Document Format. The latest version of Adobe Acrobat Reader or similar software is required to view it. If you wish to download the latest version of Acrobat Reader free of charge, click here.

High-quality printed paper copies of this postcard are available for purchase at Information Services, U.S. Geological Survey (1-888-ASK-USGS).


For viewing and printing.
(This version of the report is accessible as defined in Section 508 of the Rehabilitation Act of 1973, Amendments of 1998.)
USA.gov logo  Take Pride in America button