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International Seminar on Biodiversity and Sustainable Development in the Mekong River Basin 13

CHAPTER 3

Disaster Related Economic Damage Assessment in Mekong Subregion
“Case of Thailand”

Pongsak Suttinon
1*

1 Department of Water Resources Engineering, Faculty of Engineering,
Chulalongkorn University, Thailand
*Corresponding author: E-mail: pongsak.su@chula.ac.th

Abstract

Flood is one of the major disasters in Thailand. From the 2011 floods in Thailand, the World Bank
reported total damage and losses amounted to THB 1.43 trillion (USD 46.5 billion. This damage
and losses are approximately 70 % of total national budget in that year. Office of National Water
Resources (ONWR) and Chulalongkorn University are developing the new system for economic
assessment from satellite image. The case of tropical storm Dianmu 2021 and rice damage is
selected to show the calculation result from developed model. Flood hazard map, flood exposure
map in case of rice and flood vulnerability map are combined to generate the flood risk map in
case of rice. The calculation result showed that rice damage is physical unit as 5,700 sq.km. or 405
million USD in monetary term. It is certain that flood is one of the major disasters in Thailand
resulting in socio-economic damage and loss. Policy makers could carefully manage this risk.
Flood risk map in monetary term is one of the powerful communication tools to provide data to
local citizen on how to response this risk.

Keywords: Flood, Damage, Risk Management

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