CGS Seismic Hazards Program: Liquefaction Zones

Liquefaction Zones (Feature Service)This is a digital Seismic Hazard Zone Map presenting areas where liquefaction and landslides may occur during a strong earthquake. Three types of geological hazards, referred to as seismic hazard zones, may be featured on the map: 1) liquefaction, 2) earthquake-induced landslides, and 3) overlapping liquefaction and earthquake-induced landslides. In addition, a fourth feature may be included representing areas not evaluated for liquefaction or earthquake-induced landslides. Developers of properties falling within any of the three zones may be required to investigate the potential hazard and mitigate its threat during the local permitting process.

Data and Resources

Field Value
accessLevel public
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identifier c22a799a-583c-4571-b472-61dee6c16ab9
issued 2017-10-11T15:50:56.000Z
modified 2022-02-11T23:00:22.000Z
publisher California Department of Conservation
resource-type Dataset
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Groups
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  • california-department-of-conservation
  • california-geological-survey
  • california-natural-resources-agency
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  • cgs
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isopen False
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license_title License not specified
maintainer gis_cadoc
maintainer_email gis@conservation.ca.gov
metadata_created 2025-11-22T21:57:41.213316
metadata_modified 2025-11-22T21:57:41.213320
notes <div style='text-align:Left;'><div><div><p><span>Liquefaction Zones (Feature Service)</span></p><p><span>This is a digital Seismic Hazard Zone Map presenting areas where liquefaction and landslides may occur during a strong earthquake. Three types of geological hazards, referred to as seismic hazard zones, may be featured on the map: 1) liquefaction, 2) earthquake-induced landslides, and 3) overlapping liquefaction and earthquake-induced landslides. In addition, a fourth feature may be included representing areas not evaluated for liquefaction or earthquake-induced landslides. Developers of properties falling within any of the three zones may be required to investigate the potential hazard and mitigate its threat during the local permitting process.</span></p></div></div></div>
num_resources 2
num_tags 14
title CGS Seismic Hazards Program: Liquefaction Zones