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106 datasets

Map Sheet 48 (2025 update) - MMI from PGA and mean M & R (2% in 50 years)

Published by: California Department of Conservation
Last updated: Tuesday, May 19, 2026
File types: HTML, ARCGIS GEOSERVICES REST API

The California Geological Survey (CGS) Map Sheet 48 (MS48) provides a depiction of expected ground shaking intensity from future earthquakes across th...

Map Sheet 48 (2025 update) - MMI from PGA and Epsilon (10% in 50 years)

Published by: California Department of Conservation
Last updated: Tuesday, May 19, 2026
File types: HTML, ARCGIS GEOSERVICES REST API

The California Geological Survey (CGS) Map Sheet 48 (MS48) provides a depiction of expected ground shaking intensity from future earthquakes across th...

Map Sheet 48 (2025 update) - MMI from PGA (10% in 50 years)

Published by: California Department of Conservation
Last updated: Tuesday, May 19, 2026
File types: HTML, ARCGIS GEOSERVICES REST API

The California Geological Survey (CGS) Map Sheet 48 (MS48) provides a depiction of expected ground shaking intensity from future earthquakes across th...

Map Sheet 48 (2025 update) - MMI from PGA (2% in 50 years)

Published by: California Department of Conservation
Last updated: Tuesday, May 19, 2026
File types: HTML, ARCGIS GEOSERVICES REST API

The California Geological Survey (CGS) Map Sheet 48 (MS48) provides a depiction of expected ground shaking intensity from future earthquakes across th...

Earthquake Zones of Required Investigation

Published by: California Department of Conservation
Last updated: Tuesday, May 19, 2026
File types: HTML, ARCGIS GEOSERVICES REST API

The California Earthquake Hazards Zone Application ("EQ Zapp") is an online map that allows anyone with a computer, tablet or smartphone to...

California Landslide Inventory and Deep Landslide Susceptiblity

Published by: California Department of Conservation
Last updated: Tuesday, May 19, 2026
File types: HTML, ARCGIS GEOSERVICES REST API

California Landslide InventoryThe statewide landslide map database shows many of the landslides mapped by CGS and others over the past 50 years. Each ...