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California Landslide InventoryThe statewide landslide map database shows many of the landslides mapped by CGS and others over the past 50 years. Each feature includes a database record showing at...
Search relevance: 1.00 | Views last month: 25 | Catalog Last Checked: December 28, 2025 at 07:20 PM -
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...
Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: May 27, 2026 at 07:55 PM -
The geochemical data included here were generated as part of the Earth Mapping Resources Initiative (Earth MRI), which was developed by the U.S. Geological Survey (USGS) in response to a Federal...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: May 05, 2026 at 07:27 PM -
California is a veritable treasure chest of nationally acclaimed natural landmarks and much adored scenery. This geologic legacy on display in the landscape can be observed throughout California's...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: December 28, 2025 at 07:21 PM -
"This digital database contains the faults shown on the Fault Activity Map of California by Charles W. Jennings and William A. Bryant published in 2010. The map shows locations of known faults...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: December 28, 2025 at 07:21 PM -
The California Geological Survey (CGS) Map Sheet 48 (MS48) provides a depiction of expected ground shaking intensity from future earthquakes across the state. The shaking intensity is represented...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: May 27, 2026 at 07:54 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...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: December 28, 2025 at 07:19 PM -
Mineral Land Classification (MLC) 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 mineral resource...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: December 28, 2025 at 07:20 PM -
This image service is part of a collection of maps for PGA, PGV and spectral accelerations at 0.2 s (SA02), 1.0 s (SA10), and 2.0 s (SA20) to illustrate seismic hazards in California. For each...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: May 27, 2026 at 07:54 PM -
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 recommended radon...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: December 28, 2025 at 07:23 PM -
This image service is part of a collection of maps for PGA, PGV and spectral accelerations at 0.2 s (SA02), 1.0 s (SA10), and 2.0 s (SA20) to illustrate seismic hazards in California. For each...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: May 27, 2026 at 07:54 PM -
The 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" to reduce the...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: December 28, 2025 at 07:19 PM -
The California Geological Survey (CGS) Map Sheet 48 (MS48) provides a depiction of expected ground shaking intensity from future earthquakes across the state. The shaking intensity is represented...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: May 27, 2026 at 07:54 PM -
This image service is part of a collection of maps for PGA, PGV and spectral accelerations at 0.2 s (SA02), 1.0 s (SA10), and 2.0 s (SA20) to illustrate seismic hazards in California. For each...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: May 27, 2026 at 07:54 PM -
The California Geological Survey (CGS) Map Sheet 48 (MS48) provides a depiction of expected ground shaking intensity from future earthquakes across the state. The shaking intensity is represented...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: May 27, 2026 at 07:54 PM -
This image service is part of a collection of maps for PGA, PGV and spectral accelerations at 0.2 s (SA02), 1.0 s (SA10), and 2.0 s (SA20) to illustrate seismic hazards in California. For each...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: May 27, 2026 at 07:54 PM -
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...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: December 28, 2025 at 07:19 PM -
The California Earthquake Hazards Zone Application ("EQ Zapp") is an onlin​e map that allows anyone with a computer, tablet or smartphone to conveniently check whether a property is in an...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: July 28, 2025 at 08:19 PM -
This image service is part of a collection of maps for PGA, PGV and spectral accelerations at 0.2 s (SA02), 1.0 s (SA10), and 2.0 s (SA20) to illustrate seismic hazards in California. For each...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: May 27, 2026 at 07:54 PM -
This image service is part of a collection of maps for PGA, PGV and spectral accelerations at 0.2 s (SA02), 1.0 s (SA10), and 2.0 s (SA20) to illustrate seismic hazards in California. For each...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: May 27, 2026 at 07:54 PM
