Planning Scenario in Humboldt and Del Norte Counties, California for a Great Earthquake on the Cascadia Subduction Zone

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This report assesses the vulnerability of lifelines in northwestern California to a major earthquake on the Cascadia Subduction Zone (CSZ). The planning area, consisting of Humboldt and Del Norte counties, is about 50 miles (80 km) east to west and 140 miles (225 km) north to south. The area includes Eureka, Arcata, Crescent City, and many smaller communities. Over 150,000 people reside in the planning area, 127,000 in Humboldt County, and 29,000 in Del Norte County (Population Estimates, State of California, Department of Finance, 1.1.94, Report 94 E-1).

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  • Report


  • critical issues, database publication, hazards, earthquake, california