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Abstract

The risks of flooding damages for a region increase as the population and economy development increased in that area. Damage assessment and risk analysis are important issues for risk management and hazard mitigation. There are huge amount of data involved in the process of regional damage assessment and most of these data are spatially and temporally distributed. This paper focuses on the use of spatial data for capture of spatial characteristics of damage in natural calamities. Because it affects a large number of persons and families, flood damages in the residential area usually attract major attentions in regional flood hazard management. Stage-damage curve was built for the residential sector in this study based on socio-economic data such as persons per household, building characteristics, living styles, and common indoor decorations, furniture and appliances. Another objective of this paper is to demonstrate the use of geographic database and spatial analysis in regional flood damage assessments for capture of spatial variations within the region. A mapping scheme was proposed for estimation of buildings and residential area distributions using census data. The city of Taipei was used as a demonstration area for this study

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