United States Department of Transportation
i
Development of Site-Specific Hydrologic and Hydraulic Analyses for Assessing Transportation Infrastructure Vulnerability & Risks to Climate Change
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2020-09-01
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[PDF-4.98 MB]
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Abstract:This pilot study supports PennDOT’s continued efforts to develop processes and procedures to assess potential flooding vulnerabilities and risks related to transportation infrastructure. The study builds upon PennDOT’s Extreme Weather Vulnerability Study and existing hydrologic and hydraulic (H&H) assessments that are typically conducted as part of the design process and used to obtain Pennsylvania Department of Environmental Protection (DEP) and U.S. Army Corps of Engineers environmental permits. The existing H&H assessments follow the procedures and requirements in PennDOT’s Design Manuals. The pilot study includes three site-specific H&H assessments that have been expanded (as compared to current PennDOT procedures) to address the impacts of more intense and frequent precipitation events under future climate scenarios. The analyses and procedures conducted for the pilot study highlight the extraction and interpretation of global climate model precipitation data, the application of that data to the H&H process, and methods to evaluate adaptation strategies to improve infrastructure resiliency.
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