Vietnam is famous for its long coastline and its vital Mekong Delta, an expansive, fertile area fed by the Mekong River. However, the region is facing two massive and colliding threats: increasing weather driven by climate change and its own sinking land due to poor infrastructure decisions. Consequently, a cycle of devastating floods that cost lives and billions in damage has occurred in the past few years.
The storms that hit Vietnam are known as typhoons, which are “fueled” by warm ocean water. The warmer the water becomes due to global warming, typhoons are granted more impact, heavier rainfall, and more intense winds. According to the World Meteorological Organization (WMO), this is a current crisis with forecasts of a 70% chance that the 2025-2029 five-year average will exceed 1.5 degrees Celsius. Essentially, this means there will be higher flooding at more intense levels than ever before, creating a new normal on the Mekong Delta.
In addition, while climate change strengthens the water coming from the ocean, human activity is weakening the land. The Mekong Delta is naturally made of sediments. However, the decision made from poor infrastructure and urbanization is literally causing the land to sink. Studies show that upstream dams and sand mining trap up to 50% of the Mekong Basin’s essential sediment, which are natural “building blocks” the Delta needs to regenerate and stay above the sea level. When the land sinks and the storms get stronger, the entire region becomes vulnerable.
The real-world costs of this lead to casualties and major financial losses. In the first nine months of 2025, 187 people are dead or missing in Vietnam. Moreover, there is an estimated economic loss of more than $610 million from rebuilding, finding missing civilians, and providing aid to those injured. For example, a 2020 landslide at the Rào Trăng 3 Hydropower Plant during a storm killed 17 construction workers and a military rescue team of 13 soldiers.
As climate impacts increase and upstream activities continue, Vietnam faces the challenge of adapting to protect its land and population from these merging threats.
