The Deputy Governor of Bangkok revealed the latest situation: light rain may occur in the afternoon, with another chance of rain returning in the evening. Authorities are rushing to open water channels to push water from Saen Saep Canal into the Chao Phraya River and are clearing vehicles stranded on roads by moving them to local police stations and district offices.
On 28 Sep 2026 GMT+7, Mr. Wisanu Subsompon, Deputy Governor of Bangkok, reported on the rain and water drainage situation in the city. According to the Meteorological Department forecast, rain may continue from morning until about 1 p.m., mostly light showers. After that, rain will decrease in the afternoon before possibly returning in the evening. Nonetheless, this is considered normal for the rainy season, and without heavy rainfall, water drainage should speed up.
For the eastern side of Bangkok, the main approach now is to accelerate drainage from Saen Saep and Prawet Burirom Canals, which are the main canals receiving water from smaller tributaries before releasing it into the Chao Phraya River. Once water levels in these main canals drop, pumping and drawing water from smaller canals, roads, and community areas into the system can increase.
Deputy Governor Wisanu said that water levels in some parts of Saen Saep Canal, especially near the beginning of Ramkhamhaeng area, are improving. Bangkok will gradually intensify pumping water from smaller canals into Saen Saep Canal to help reduce water levels in Ramkhamhaeng, Thepleela, and then push further towards Khlong Chan area, which may take longer due to its deeper location in the drainage system.
The Ladkrabang area is considered the most challenging point because it is at the far eastern edge of Bangkok. Water must be drained through Prawet Burirom Canal for several tens of kilometers before reaching the Phra Khanong pumping station and then into the Chao Phraya River. Therefore, water levels must be gradually lowered from the downstream side. Currently, parts of On Nut area are improving, and water levels will gradually be lowered sequentially in Phatthanakan, Prawet, and Ladkrabang areas.
“The principle is that we must first reduce water levels in the main canals. It is expected to take about three days to lower levels to a point that better facilitates drainage from smaller canals. However, for water that has overflowed from canals and pipes into houses or communities, pumping water back into the system will take longer, possibly about one week in some locations,” Deputy Governor Wisanu said.
Regarding Saen Saep Canal, Bangkok is using both the canal system and mechanical tools to accelerate drainage, including a drainage tunnel that helps receive water in the system. Water management is also linked with Samsen Canal and the drainage system near Makkasan Pond to divert water from Saen Saep Canal. This has helped alleviate flooding in several areas, such as New Phetchaburi Road, where water levels have dropped and traffic is gradually reopening.
As for Khlong Chan flats and the Sports Village community, Deputy Governor Wisanu noted that water levels in Saen Saep Canal must decrease first before water can be effectively drained from Khlong Chan. The canal situation is expected to improve starting tomorrow, but removing water from communities and homes will require ongoing monitoring at each location.
Deputy Governor Wisanu also addressed questions about pre-rain water release, explaining that Bangkok continuously manages water release throughout the rainy season. Canals with embankments can release more water, but those without embankments require controlled water levels to avoid damage to canal banks or riverside homes. Meanwhile, Saen Saep Canal must maintain minimum water levels during navigation periods to allow boat traffic.
Bangkok has long-term plans to improve eastern drainage efficiency by preparing drainage tunnel projects to help transfer water from Prawet Burirom Canal system more quickly into the Chao Phraya River. This includes a tunnel project to connect Khlong Chan Canal to Ladprao Canal system, which will enhance drainage capacity in the future.
Police General Adis Ngamjitsuksri, advisor to the Bangkok Governor, added that as water levels on several roads begin to recede, Bangkok, together with Metropolitan Police Command, local police stations, and district offices, is expediting the removal of stranded or immobile vehicles from roadways to restore traffic flow. Initially, vehicles from Makkasan Police Station area will be moved and stored on Local Road, Kamphaeng Phet 7, before gradually proceeding with areas like Khlong Tan and Ramkhamhaeng.
Residents who parked vehicles during floods and cannot locate their cars can check at local police stations or district offices. Vehicles moved by authorities are stored in safe areas. Vehicle owners whose cars are still operable are urged to move them promptly themselves to help reopen traffic lanes, especially on main roads where water levels have started to subside.