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CGS / Seismic Hazard Zonation Program

Seismic Hazards Zonation Program 

New Official Seismic Hazard Zone Map Release - February 27, 2009

February 27, 2009 marks the release by CGS of a new Official Seismic Hazard Zone Map in eastern Alameda County - the Altamont quadrangle.   All of the 60 square-mile area covered by the Altamont quadrangle consists of unincorporated, undeveloped county land with the exception of several square miles that fall within the jurisdiction of the City of Livermore.  The Official Seismic Hazard Zone Map of the Altamont quadrangle can now be viewed and/or downloaded by clicking the “Quickview/Download PDF Maps” icon below.

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The Interactive Web Mapping site uses a java viewer. You can download it for free here

Interactive Mapping
and GIS Data

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 PDF Maps

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PDF Reports


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