Dhaka, Oct. 21 -- Annual coastal flood damage in Asia and the Pacific could reach up to $739 billion by 2100 from around $27 billion at present unless countries invest in adaptation measures, according to a new report by the Asian Development Bank (ADB).

The report, Asia-Pacific Climate Report 2026: Coastal Risks on the Rise-Actions for a Resilient Future, estimates that annual flood damage across 30 coastal economies could rise to $172 billion to $199 billion by 2050 and $520 billion to $739 billion by 2100 without adequate adaptation.

However, investing $9 billion to $19 billion annually in coastal protection could keep flood damage close to current levels and avert an estimated $178 billion to $360 billion in losses each year, the re...