Java Ground Motion Parameter Calculator

The USGS has suspended new downloads of the Java Calculator. Users who already have the Java Calculator installed wil still be able to use it until it is eventually decommissioned. All users are encouraged to instead use the U.S. Seismic Design Maps web application. That application provides seismic design parameter values from the following design code editions:

Instructions for the U.S. Seismic Design Maps web application are provided in the Documentation.

Please contact us at with any questions or concerns.