Placer County, California faces a relatively moderate overall risk score of 89.34, with specific hazards such as droughts, wildfires, flooding, and lightning contributing to varying levels of risk. The county's population of 404,590 and significant building and agricultural values make it vulnerable to these natural disasters. The area experiences an average of 10 events per year, with an expected annual loss of $45,477,769.64 due to various climate-related events.

Geological features such as the Sierra Nevada mountain range and nearby water bodies like Lake Tahoe and the American River create additional risks for the region. The county's exposure to earthquakes, hail, and wind events is notable, with historical events and data supporting the relatively high risk ratings assigned to these hazards. Additionally, the presence of fault lines and the county's proximity to the coast further heighten the potential for natural disasters such as tsunamis and volcanic eruptions.

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