hazards

Interactive map of California earthquake hazard zones

The California Geological Survey’s Earthquake Hazards Zone Application (EQ Zapp) is an interactive map that details the risk of earthquakes and related hazards for different areas of the state.

The map is searchable by address, and it maps three main hazard zones:

  • Fault zones
  • Landslide zones
  • Liquefaction zones

The map also displays areas that have not yet been evaluated for liquefaction or landslides.

Click here to access the interactive map.

An Introduction to Landslides and Mass Wasting

This course is designed to be an introduction to the subject of landslides or mass wasting. Landslides or mass wasting occur in both solid bedrock and in poorly-consolidated sediments. Concerning the latter, loose sands, clays and soft shales can prove to be quite problematic. These type of strata are highlighted in our discussions. We will start with a basic review of soil mechanics and strength of materials, as a precursor to our coverage of the topic of landslides.

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