Bangkok: The Prime Minister has instructed the Center for the Resolution of Emergency Situation to closely monitor the water situation following heavy rainfall across numerous regions. All relevant units have been directed to remain on standby and provide round-the-clock support for affected populations. This directive comes in response to warnings from the Office of National Water Resources (ONWR) about potential flooding, flash floods, and landslides expected to persist until May 30.
According to Thai News Agency, Ms. Sasikarn Wattanachan, Deputy Government Spokesperson, disclosed that Prime Minister Ms. Paethongtarn Shinawatra is actively overseeing the situation. The Flood, Storm and Landslide Relief Operation Center (FLOC) has been tasked with preparing personnel, equipment, machinery, and an ongoing public alert system to address the situation.
The deputy spokesperson noted that a meeting of the National Economic and Social Development Board (NESDB) estimated a 25% increase in accumulated rainfall in 2025 compared to the average. Consequently, the public is advised to exercise caution regarding potential flooding, flash floods, mudslides, and landslides from May 26-30.
Residents in high-risk areas have been urged to stay vigilant. These areas include:
In the North: Mae Hong Son, Chiang Rai, Lampang, Tak, Phetchabun, Uttaradit;
In the Northeast: Bueng Kan, Kalasin, Udon Thani, Sakon Nakhon, Nakhon Phanom, Mukdahan, Maha Sarakham, Roi Et, Yasothon, Amnat Charoen, Surin, Sisaket, Ubon Ratchathani;
In the West: Kanchanaburi;
In the East: Nakhon Nayok, Prachin Buri, Chanthaburi, Trat;
In the South: Chumphon, Ranong, Phang Nga.
There are additional warnings for low-lying areas about potential high tides and saltwater intrusion from May 27 to June 1. Affected areas include regions along the Chao Phraya, Tha Chin, and Mae Klong Rivers, as well as communities outside temporary embankments and without permanent flood barriers. Surveillance areas for saltwater intrusion affecting water quality for consumption and agriculture include Samut Prakan, Bangkok, Samut Sakhon, Nakhon Pathom, and Samut Songkhram.
In Mae Sai, Chiang Rai Province, the flood situation is reportedly improving, yet continued vigilance is necessary due to potential rainfall and water inflow from neighboring areas. The water level at the Mae Sai Friendship Bridge 1 remains approximately 20 centimeters below the bank. Coordination with the Forward Command Center in Chiang Rai is ongoing to ensure 24-hour readiness to assist the public.
The government encourages individuals needing assistance to contact the hotline 1784 and stay informed through official channels.
The NESDB meeting also addressed concerns about arsenic levels in the Kok and Sai rivers. The Ministry of Public Health conducted water testing in 13 locations across 7 districts, confirming that arsenic levels remain within acceptable standards. The public is advised to remain vigilant and prioritize their safety.
‘The government extends its concern to all citizens who may be impacted by the current flood situation. We assure that all pertinent agencies are fully prepared to offer assistance and care. We urge citizens to stay informed and cooperate with officials to ensure everyone’s safety,’ stated Ms. Sasikarn.