BANGKOK, THAILAND – Three days of salty seawater flooding in Bang Khun Thian triggered an emergency response and renewed warnings about Bangkok’s climate future.
Seawater breaches damaged dike
The coastal district of Bang Khun Thian experienced unusually high tides that overtopped a damaged dike. Salty water flowed into residential areas, fish ponds and the Bang Khun Thian–Chai Talay road, with the area around Khlong Sam particularly affected.
Municipal workers tried to hold back the surge with an emergency barrier of 1,000 sandbags. The temporary wall was about 30 meters long and 30 centimeters high.
Governor says situation under control
After inspecting the scene, Governor Chadchart Sittipunt sought to reassure residents of the capital.
“The situation is under control. The impacts are limited to coastal areas.”
said Chadchart, governor of Bangkok.
He said people living in inner Bangkok did not need to worry at present because rainfall and river levels were low. The governor instructed agencies to inspect all vulnerable dikes and urged citizens to report risk spots via the Traffy Fondue app.
Experts warn of worsening floods
Environmental specialist Sonthi Kotchawat described the incident as a warning shot. He said such floods would become more frequent and more severe because of climate change.
According to the expert, the ongoing rise in sea level was driven by ocean warming and melting glaciers. By 2030, Bangkok could face far more serious storm surges, and current projections were described as alarming.
Long-term nightmare for central Thailand
Sonthi’s long-term outlook painted a grim picture for central Thailand by the year 2100. Low-lying areas could be permanently inundated if sea levels continued to climb.
Cities such as Lop Buri, Saraburi and Uthai Thani, which today are inland, could effectively become coastal towns. A shift of the coastline by dozens of kilometers would affect millions of people.
Call for barriers, mangroves and possible relocation
Sonthi urged immediate action to protect exposed areas. He said coastal barriers, together with the restoration of mangrove forests and wetlands, were essential.
In zones considered extremely vulnerable, the expert said even the relocation of communities might have to be discussed. Such steps would require urgent political decisions and long-term, large-scale investment, he warned.
Short-term fixes versus generational challenge
The operation in Bang Khun Thian showed that authorities were able to react quickly to immediate threats. However, the long-term challenge was of a different magnitude for Bangkok, a metropolis lying in parts only slightly above sea level.
Officials and experts said the city faced a generational struggle against advancing waters. The sandbags deployed this week were described as a temporary patch, while the real defenses against the sea still had to be built.