TAILIEUCHUNG - Báo cáo " A method to construct flood damage map with an application to Huong River basin, in Central Vietnam"

In recent years, under impacts of human activities and climate change, flood has been increased in both the frequency and magnitude, causing lots of damages to people. This study presents a method to evaluate the direct spatial damages of flooding based on inundation depth and land use data. Damage functions for different types of land use arc selected and applied. Matlab strings and GIS are combined to calculate damage in monitery term. The method is applied for estimating loss caused by thc flood event November 1999 for Huong rivce basin. The relative agreement between total damage of survey data and. | VNU Journal of Science Earth Sciences 25 2009 10-19 A method to construct flood damage map with an application to Huong River basin in Central Vietnam Nguyen Tien Giang1 Joric Chen2 Tran Anh Phuong1 1 College of Science VNU 2 University of Twente The Netherlands Received 5 April 2009 received ill revised form 18 April 2009 Abstract. In recent years under impacts of human activities and climate change flood has been increased in both tile frequency and magnitude causing lots of damages to people. This study presents a method to evaluate the dfrect spatial damages of flooding based on inundation depth and land use data. Damage functions for different types of land use are selected and applied. Matlab strings and GIS are combined to calculate damage in monitery term. The method is applied for estimating loss caused by the flood event November 1999 for Huong river basin. The relative agreement between total damage of survey data and estimated results shown that the methodology provided in this study is applicable. The methodology can be used to determine die flood-induced economic loss for cost-benefit analysis in die flood control projects. Keywords Inundation map Flood damage map Huong river basin. 1. Introduction Economic activities in flood-prone areas are being dentisified around the world. At the same time we face changing weather conditions and a rising sea level as a result of climatic change. If no measures are carried out both probability and inpact of floods will increase drastically 18 . In order to select effectively the mitigation measures besides social concerns the decision makers should be informed which measure brings more economic benefit to the area. In this sense economic damage caused by flood must be estimated. This issue has been the interest of many studies. The FLOODsitc s Corresponding author. Tel. 84-4-2173940. E-mail giangnt@. vn report 2006 provided a guideline for socioeconomic flood damage evaluation 3 . The report bundled .

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