Assessing Lifeline Interdependencies and Restoration Performance in San Francisco Using Qualitative Methods
Publication: Lifelines 2022
ABSTRACT
This paper documents outcomes of San Francisco’s efforts to assess post-earthquake interdependencies and restoration performance of lifeline systems serving the city. Two studies, completed in 2014 and 2020, used expert interviews with lifeline providers and cross-sector workshops to understand lifelines impacts from a major earthquake, restoration timelines and processes for each system, and lifelines interdependencies. New issues and changes in restoration performance between the first and second study were assessed. The studies resulted in current and target restoration timelines for all San Francisco lifelines using a common metric of level of service disruption and a clear understanding of interdependencies between lifelines. They also helped identify geographic areas with lifeline system concentrations or other vulnerabilities, key actions needed to achieve target restoration timelines, and high priority mitigation opportunities benefitting multiple systems. These efforts demonstrate the value of qualitative, collaborative approaches to assessing lifeline interdependencies, and restoration performance at a community-scale.
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Lifelines 2022
Pages: 782 - 796
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Published online: Nov 16, 2022
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