-
CGS Seismic Hazards Program: Liquefaction Zones
Liquefaction Zones (Map or Tile Service)This is a digital Seismic Hazard Zone Map presenting areas where liquefaction and landslides may occur during a strong earthquake. Three... -
CGS Seismic Hazards Program: Overlapping Landslide and Liquefaction Zones
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... -
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... -
CGS Map Sheet 48: Earthquake Shaking Potential for California (revised 2016)
The California Geological Survey published maps of “Earthquake Shaking Potential for California” in 1999 and has revised the maps following each update of the National Seismic... -
CGS Map Sheet 48: Shear-wave Velocity in Upper 30m of Surficial Geology (Vs30)
This dataset represents simplified geologic units that have been correlated to the time-averaged seismic shear-wave velocity in the upper 30 meters of the earth’s surface... -
CGS Seismic Hazards Program: Unevaluated Areas
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... -
CGS Information Warehouse: Mineral Land Classification Maps (SMARA Study Areas)
Mineral Land Classification studies are produced by the State Geologist as specified by the Surface Mining and Reclamation Act (SMARA, PRC 2710 et seq.) of 1975. To address... -
CGS Seismic Hazards Program: Unevaluated Areas
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... -
CGS Seismic Hazards Program: Unevaluated Areas
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... -
CGS Seismic Hazards Program: Overlapping Landslide and Liquefaction Zones
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... -
CGS Mineral Hazards: Indoor Radon Potential Zones
This digital layer contains polygons (vector format) of portions of California designated as having high, moderate, low, or unknown potential for homes to exceed the U.S. EPA... -
CGS Seismic Hazards Program: Alquist-Priolo Fault Hazard Zones
This data set contains the Alquist-Priolo Earthquake Fault Zones as shown on the Official Alquist-Priolo Earthquake Fault Zones Maps. The dataset is comprised of polygons that... -
CGS Seismic Hazards Program: Unevaluated Areas
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... -
CGS Information Warehouse: Tsunami Inundation Maps
Produced collectively by tsunami modelers, geologic hazard mapping specialists, and emergency planning scientists from the University of Southern California (USC) Tsunami... -
CGS Mineral Hazards: Indoor Radon Potential Study Areas
Study area boundaries for indoor radon potential conducted by the California Geological Survey. -
CGS Seismic Hazards Program: Alquist-Priolo Fault Hazard Zones
This data set contains the Alquist-Priolo Earthquake Fault Zones as shown on the Official Alquist-Priolo Earthquake Fault Zones Maps. The dataset is comprised of polygons that... -
CGS Information Warehouse: Mineral Land Classification Maps (SMARA Petitions)
Mineral Land Classification studies are produced by the State Geologist as specified by the Surface Mining and Reclamation Act (SMARA, PRC 2710 et seq.) of 1975. To address... -
CGS Map Sheet 48: National Loss from Earthquake Damage, Conterminous United...
"Annualized Earthquake Losses (AEL) are economic losses from earthquake shaking-related building damage. These data use the most recent National Seismic Hazard Maps (the years... -
Sedimentary Geothermal Feasibility in Nevada, Western Utah, Colorado, and...
The objectives of this project were to (1) perform a literature review of sedimentary geothermal resources, (2) identify data sources and develop data-collection methodologies... -
CGS Information Warehouse: Mineral Land Classification Maps (SMARA Study Areas)
Mineral Land Classification studies are produced by the State Geologist as specified by the Surface Mining and Reclamation Act (SMARA, PRC 2710 et seq.) of 1975. To address...