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Risk-informed design is typically used for coastal levee projects, which integrate hazards, performance, and consequences. Presently, U.S. practice uses a relationship between overtopping discharge rates and erosion in order to evaluate and design coastal levees. However, excess loading concepts may better characterize physical processes during an erosional event. Herein, high-fidelity modeling and response-based probabilistic methods are combined with an excess loading approach to define levee crest elevations. These response-based methods maintain high statistical and physical fidelities and incorporate uncertainties. An example analysis is used to compare the probabilistic results from overtopping discharge rates and excess loading methods.

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Probabilistic Analysis of Coastal Levee Erosion Using Excess Loading in a Response-Based Framework

  • 会议论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年

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  • Abigail L. Stehno,
  • Jeffrey A. Melby,
  • Norberto C. Nadal-Caraballo,
  • Victor M. Gonzalez,
  • Patrick Lynett

摘要

Risk-informed design is typically used for coastal levee projects, which integrate hazards, performance, and consequences. Presently, U.S. practice uses a relationship between overtopping discharge rates and erosion in order to evaluate and design coastal levees. However, excess loading concepts may better characterize physical processes during an erosional event. Herein, high-fidelity modeling and response-based probabilistic methods are combined with an excess loading approach to define levee crest elevations. These response-based methods maintain high statistical and physical fidelities and incorporate uncertainties. An example analysis is used to compare the probabilistic results from overtopping discharge rates and excess loading methods.