Abstract A typical engineered flood protection for a community exposed to fluvial flooding is constructions of flood defense dedicated for public-wide protection. Over the past few years, there have been efforts to mainstreaming individual precautionary measures as to reduce risk of flooding. Consideration of individual protection measures alongside public protection measures is mainly to increase resistance of local communities to flood impacts whilst deliberating the spatial constraints of public protection measures and optimizing cost of adaptation. However, quantification of vulnerability and risk reduction of combined public and individual protection measures has not received much attention, far less a risk-based economic analysis. In assisting flood risk management decision making, a systematic approach to quantify vulnerability and flood risk of conditions with the combined protection measures is deemed crucial. This study proposes a methodology to assess vulnerability and flood risk of flooding considering combined public and individual protection measures, aiming for relevant applications in economic appraisal of local protection options. The applicability of the methodology is demonstrated using a case study of a residential area of Teddington near the Greater London. A range of different possible levels of protection was also included to exemplify the usefulness of the methodology in search for an optimal protection level. The results show that the combined public and individual protection can reduce flood risk significantly. The study highlights that the methodology can serve as a tool for a practical and manageable vulnerability and flood risk assessment.

中文翻译：

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在损害评估中核算公共和个人防洪措施：与当地工程适应选项相关的脆弱性和洪水风险定量评估的新方法

摘要 针对遭受河流洪水侵袭的社区，典型的工程防洪工程是专门为公众提供保护的防洪设施。在过去几年中，已努力将个人预防措施纳入主流，以减少洪水风险。在考虑公共保护措施的同时考虑个人保护措施，主要是提高当地社区对洪水影响的抵抗力，同时考虑公共保护措施的空间限制和优化适应成本。然而，公共和个人综合保护措施的脆弱性和风险降低的量化并未受到太多关注，更不用说基于风险的经济分析了。在协助洪水风险管理决策时，使用综合保护措施量化脆弱性和洪水风险的系统方法被认为是至关重要的。本研究提出了一种综合考虑公共和个人保护措施的洪水脆弱性和洪水风险评估方法，旨在相关应用在地方保护方案的经济评估中。该方法的适用性通过对大伦敦附近特丁顿住宅区的案例研究来证明。还包括一系列不同的可能保护级别，以举例说明该方法在寻找最佳保护级别方面的有用性。结果表明，公共和个人保护相结合可以显着降低洪水风险。