-
CGS Seismic Hazards Program: Landslide 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... -
CalGEM: Geothermal Wells
This online map represents geothermal wells regulated by the Geologic Energy Management Division. CalGEM is the Geologic Energy Management Division of the California Department... -
CGS Information Warehouse: Regulatory Maps
Alquist-Priolo Earthquake Fault Zoning Act (1972) and the Seismic Hazards Mapping Act (1990) direct the State Geologist to delineate regulatory "Zones of Required Investigation"... -
Primacy Aquifer Exemptions
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 Fields... -
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... -
WellSTAR Oil and Gas Facilities: Pits and Sumps
This online map displays facility sites in group or by facility types in separate layers: including pits and sumps.CalGEM is the Geologic Energy Management Division of the... -
Well Stimulation Permit
This online map locates the wells that have NOI records in the CalGEM WellSTAR database, and provides well NOI information including operator, lease, Notice of Intention (NOI),... -
California Important Farmland: 2000
Established in 1982, Government Code Section 65570 mandates FMMP to biennially report on the conversion of farmland and grazing land, and to provide maps and data to local... -
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: Liquefaction Zones
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... -
Public Land Survey System (PLSS): Township and Range
In support of new permitting workflows associated with anticipated WellSTAR needs, the CalGEM GIS unit extended the existing BLM PLSS Township & Range grid to cover offshore... -
California Important Farmland: 2020
Established in 1982, Government Code Section 65570 mandates FMMP to biennially report on the conversion of farmland and grazing land, and to provide maps and data to local... -
California Important Farmland: 1986
Established in 1982, Government Code Section 65570 mandates FMMP to biennially report on the conversion of farmland and grazing land, and to provide maps and data to local... -
Oil and Gas Field Administrative Boundaries
Administrative boundaries for oil and gas fields in California.CalGEM is the Geologic Energy Management Division of the California Department of Conservation, formerly the... -
Public Land Survey System (PLSS): Sections
In support of new permitting workflows associated with anticipated WellSTAR needs, the CalGEM GIS unit extended the existing BLM PLSS Township & Range grid to cover offshore... -
Hydraulic Fracturing
This online map locates the wells that have NOI records in the CalGEM WellSTAR database, and provides well NOI information including operator, lease, Notice of Intention (NOI),... -
California Important Farmland: Most Recent
This dataset may be a mix of two years and is updated as the data is released for each county. For example, one county may have data from 2014 while a neighboring county may... -
California Important Farmland: 1996
Established in 1982, Government Code Section 65570 mandates FMMP to biennially report on the conversion of farmland and grazing land, and to provide maps and data to local... -
WellSTAR Underground Gas Storage: Project Wells
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 CalGEM’s... -
WellSTAR Underground Gas Storage: Area of Review Wells
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 CalGEM’s...
Official websites use .gov
A
.gov website belongs to an official government
organization in the United States.
Secure .gov websites use HTTPS
A
lock (
) or https:// means you’ve safely connected to
the .gov website. Share sensitive information only on official,
secure websites.