EVALUATION OF THE FLOOD CAUSED VULNERABILITY FOR SOCIAL-ECONOMICS IN CHAU DOC CITY, AN GIANG

Abstract

Recently, an important trend of changing natural disaster management to flood risk management has been emerged. The method of assessment of flood risks was based on the Multiple Attribute Value Theory, using a linear function to calculate the index of individual solutions. In addition, to estimate the weights of each factor, the AHP method (Analytic Hierarchy Process) was also applied. The vulnerable levels due to flooding in Chau Doc City, An Giang province could be assessed, based on 3 flood scenarios including high level (the 2011’s flood); moderate level (the 2009’s flood); and low level (the 2010’s flood). The results showed that, for the 3 flood scenarios, the vulnerable level of the entire Chau Doc City was moderate with the FVI (Flood Vulnerable Index) ranging from 0.301 to 0.331 for the high flood scenario, FVI 0.322 - 0.351 for the moderate flood, and 0.336 - 0.371 for the low flood.

Keywords: Flood risk management, linear function, vulnerable level.