| Summary: | 碩士 === 國立臺灣海洋大學 === 河海工程學系 === 106 === In recent years, the impact of climate change has led to increase the intensity of urban flood disasters. In order to reduce the loss resulted in urban floods and strengthen the urban resilience, establishment of index system to assess the flood resilience is needed. With this index system, performance of city on flood resilience can be analyzed and degree of goodness of flood resilience for a city can also be assessed. These results can provide as a reference for policymakers in the area of urban flood mitigation in the city.
The definition of resilience can be interpreted as a system’s ability of resistance before disaster, adaptability at the time of disaster occurrence, and the ability of rehabilitation after disaster. This concept is used to establish the flood resilient index. The composition of the index includes four orientations and seven sub-indicators, and the assessment of the resilience is based on the amount of flood loss. Households, agriculture, industry and commerce, and public facilities are the four orientations. Number of people affected, land loss, housing loss, agriculture losses, industrial and commercial losses, public facilities losses, and transportation and water conservancy facilities losses are the seven sub-indicators.
The scale of flood resilient index developed in this research can be small as a community or large as a whole country. The steps for resilience evaluation is to calculate the flood loss first, then use the flood loss to obtain the sub-indicators, and then combine the sub-indicators to describe each orientation of the index. Finally, formula developed in the study can be used to calculate the flood resilience of the study area. To ensure the accurate of evaluation, it is necessary to collect the data in the study area according to the content of index, carry on the flood simulation to determine the depth of flooding and estimate the flood area for various flood depths.
With the potential flooding maps published by the National Science and Technology Center for Disaster Reduction, the damage caused by various flood depths can be estimated. The research shows that the flood resilient index developed by this research can be used easily and the result of the evaluation can be easily understand. The index system developed in this research can be applied to any city and results obtained by the evaluation can provide as the reference for the policymakers in the city in urban storm water management.
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