People in Ho Chi Minh City suffer from flooding due to heavy rains. (Illustrative photo)

Other cities on the list include Tianjin, Shanghai, and Guangzhou in China; Bangkok in Thailand; Yangon in Myanmar; Dhaka in Bangladesh, along with Kolkata and Mumbai in India.

Researchers at the OECD, climate risk modeling firm RMS and Tyndall Centre for Climate Change Research, cited four major factors creating the threat: the deepening climate emergency, the gradual cave-ins of land, rising population, and the migration of people from the countryside to urban areas.

The survey takes a look at the 10 Asian cities most exposed to coastal flooding through to 2070.