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State
CGS Seismic Hazards Program: Landslide Zones
State of California —
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,... -
State
CGS Information Warehouse: Mineral Land Classification Maps (SMARA Study Areas)
State of California —
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... -
State
CGS Seismic Hazards Program: Liquefaction Zones
State of California —
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... -
State
CGS Seismic Hazards Program: Unevaluated Areas
State of California —
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,... -
State
Public Land Survey System (PLSS): Sections
State of California —
In support of new permitting workflows associated with anticipated WellSTAR needs, the CalGEM GIS unit extended the existing BLM PLSS Township & Range grid to... -
State
WellSTAR Oil and Gas Facilities: Boundaries
State of California —
This online map displays facility sites in group or by facility types in separate layers: Facility Boundary layer digitized by CalGEM to show the areas that delineate... -
State
WellSTAR Underground Gas Storage: Area of Review Wells
State of California —
This online map displays California’s active Underground Gas Storage (UGS) projects and wells associated to UGS projects. Project data and well data are provided by... -
State
CGS Mineral Hazards: Indoor Radon Potential Study Areas
State of California —
Study area boundaries for indoor radon potential conducted by the California Geological Survey. -
State
CGS Information Warehouse: Landslide Maps and Reports
State of California —
Since the 1960's, the California Geological Survey (CGS) has produced numerous maps that show landslide features and delineate potential slope-stability problem... -
State
Primacy Aquifer Exemptions
State of California —
This dataset is a partial rendition of the CalGEM (formerly the California Division of Oil, Gas, and Geothermal Resources) publication called California Oil and Gas... -
State
CGS Seismic Hazards Program: Alquist-Priolo Fault Hazard Zones
State of California —
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... -
State
Post Primacy Aquifer Exemptions
State of California —
This post primacy aquifer exemption data depicts areas exempted by the US EPA for Class II injection after the March 14, 1983 Primacy agreement between the US EPA and... -
State
Post Primacy Aquifer Exemptions
State of California —
This post primacy aquifer exemption data depicts areas exempted by the US EPA for Class II injection after the March 14, 1983 Primacy agreement between the US EPA and... -
State
Facility Boundary (non-wellstar)
State of California —
This online map displays facility sites in group or by facility types in separate layers: 1. All facility types in separate layers including tank, tank setting, pit,... -
State
CGS Information Warehouse: Regulatory Maps
State of California —
Alquist-Priolo Earthquake Fault Zoning Act (1972) and the Seismic Hazards Mapping Act (1990) direct the State Geologist to delineate regulatory "Zones of Required... -
State
Primacy Aquifer Exemptions
State of California —
This dataset is a partial rendition of the CalGEM (formerly the California Division of Oil, Gas, and Geothermal Resources) publication called California Oil and Gas... -
State
Public Land Survey System (PLSS): Township and Range
State of California —
In support of new permitting workflows associated with anticipated WellSTAR needs, the CalGEM GIS unit extended the existing BLM PLSS Township & Range grid to...