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CGS Liquefaction Zones

Published by California Department of Conservation | State of California | Catalog Last Checked: December 28, 2025 at 07:19 PM | Dataset Last Updated: November 19, 2025 at 05:47 PM
This is a digital Seismic Hazard Zone Map presenting areas where liquefaction may occur during a strong earthquake. Developers of properties falling within a seismic hazard zone may be required to investigate the potential hazard and mitigate its threat during the local permitting process.

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Complete Metadata
@type dcat:Dataset
accessLevel public
contactPoint 
{
  "fn": "gis_cadoc",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:gis@conservation.ca.gov"
}
description <div style='text-align:Left;'><div><div><p style='text-align:justify;'><span>This is a digital Seismic Hazard Zone Map presenting areas where liquefaction may occur during a strong earthquake. Developers of properties falling within a seismic hazard zone may be required to investigate the potential hazard and mitigate its threat during the local permitting process.</span></p></div></div></div>
distribution 
[
  {
    "@type": "dcat:Distribution",
    "title": "ArcGIS Hub Dataset",
    "format": "HTML",
    "accessURL": "https://gis-cnra.hub.arcgis.com/datasets/cadoc::cgs-liquefaction-zones"
  },
  {
    "@type": "dcat:Distribution",
    "title": "CSV",
    "format": "CSV",
    "mediaType": "text/csv",
    "describedBy": "https://data.ca.gov/api/action/datastore_search?resource_id=b8b69f80-5884-41ef-995d-771ad8be8802&limit=0",
    "downloadURL": "https://gis-cnra.hub.arcgis.com/api/download/v1/items/fcf1ebfe19be49819a12c404d74b4a7d/csv?layers=0",
    "describedByType": "application/json"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Excel",
    "format": "XLSX",
    "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
    "describedBy": "https://data.ca.gov/api/action/datastore_search?resource_id=ff9762de-f5fb-4e40-9cca-c87352606e46&limit=0",
    "downloadURL": "https://gis-cnra.hub.arcgis.com/api/download/v1/items/fcf1ebfe19be49819a12c404d74b4a7d/excel?layers=0",
    "describedByType": "application/json"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Feature Collection",
    "format": "TXT",
    "mediaType": "text/plain",
    "downloadURL": "https://gis-cnra.hub.arcgis.com/api/download/v1/items/fcf1ebfe19be49819a12c404d74b4a7d/featureCollection?layers=0"
  },
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    "mediaType": "application/zip",
    "downloadURL": "https://gis-cnra.hub.arcgis.com/api/download/v1/items/fcf1ebfe19be49819a12c404d74b4a7d/filegdb?layers=0"
  },
  {
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  },
  {
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  },
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  },
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  },
  {
    "@type": "dcat:Distribution",
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    "format": "GDB",
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    "downloadURL": "https://gis-cnra.hub.arcgis.com/api/download/v1/items/fcf1ebfe19be49819a12c404d74b4a7d/sqlite?layers=0"
  },
  {
    "@type": "dcat:Distribution",
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    "format": "ArcGIS GeoServices REST API",
    "mediaType": "application/octet-stream",
    "downloadURL": "https://services2.arcgis.com/zr3KAIbsRSUyARHG/arcgis/rest/services/CGS_Liquefaction_Zones/FeatureServer/0"
  }
]
identifier d449f431-f9f8-44b5-a03f-7d912d2ad181
issued 2021-09-09T17:17:10.000Z
keyword 
[
  "CGS",
  "CNRA",
  "California",
  "California Department of Conservation",
  "California Geological Survey",
  "California Natural Resources Agency",
  "DOC",
  "Seismic Hazard Zone Map",
  "USA",
  "california department of conservation",
  "earthquake hazard identification and mitigation",
  "earthquake hazards",
  "liquefaction"
]
license http://www.opendefinition.org/licenses/cc-by
modified 2025-11-19T17:47:57.353Z
publisher 
{
  "name": "California Department of Conservation",
  "@type": "org:Organization"
}
theme 
[
  "Natural Resources"
]
title CGS Liquefaction Zones

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