Service Description: The map is used by cities and counties to regulate development and by property owners selling property within areas where seismic hazard zones have been identified. Local governments can withhold development permits until geologic or soils investigations are conducted for specific sites and mitigation measures are incorporated into development plans. Sellers of property use the maps to check the location of their specific site and, if applicable, disclose to the buyer that the property lies within a seismic hazard zone as required by the Seismic Hazards Mapping Act of 1990 (Public Resources Code, Division 2, Chapter 7.8). For information regarding the scope and recommended methods to be used in conducting the required site investigations, see California Geological Survey Special Publication 117A, Guidelines for Evaluating and Mitigating Seismic Hazards in California.
Service ItemId: fcf1ebfe19be49819a12c404d74b4a7d
Has Versioned Data: false
Max Record Count: 2000
Supported query Formats: JSON
Supports applyEdits with GlobalIds: True
Supports Shared Templates: False
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Description: 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.
Seismic Hazards Progam, California Geological Survey, California Department of Conservation
Spatial Reference: 102100 (3857)
Initial Extent:
XMin: -14117288.9540928
YMin: 3768190.19230679
XMax: -12406455.1779525
YMax: 5169816.67226285
Spatial Reference: 102100 (3857)
Full Extent:
XMin: -13638647.9821
YMin: 3946753.4021
XMax: -13024477.3193
YMax: 4593686.6761
Spatial Reference: 102100 (3857)
Units: esriMeters
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