The government is responding to increased northern water inflows by adjusting the Chao Phraya Dam's water release to 700–1,000 cubic meters per second in line with current conditions, while warning Ayutthaya riverside districts to prepare for elevated water levels.
On 28 August 2026, Second Lieutenant Phattharadarasmi Thongsaluaykorn, Deputy Spokesperson of the Office of the Prime Minister, stated that continuous heavy rain in many upper regions of the country has caused a sustained increase in water flow into the Chao Phraya basin. The government, through the Ministry of Agriculture and Cooperatives, has instructed related agencies to urgently integrate proactive efforts to manage the water situation and prepare to assist affected communities closely and promptly.
According to monitoring and evaluation by the Royal Irrigation Department's Smart Water Operations Center (SWOC), it is forecasted that on 28 August 2026, water flow at station C.2 in Mueang Nakhon Sawan District will rise to approximately 1,000–1,100 cubic meters per second, resulting in an increased inflow above the Chao Phraya Dam of about 1,100–1,200 cubic meters per second.
The Deputy Spokesperson noted that the government, via the Royal Irrigation Department, has planned to manage upstream water by quickly diverting it into irrigation systems on both the east and west sides to reduce peak flow. They have also increased the dam’s water discharge rate to 700–1,000 cubic meters per second to align with the upstream water volume. This adjustment is expected to raise the water level downstream of the Chao Phraya Dam by approximately 0.60–1.50 meters from current levels.
However, there are risk areas that may be affected by the increased upstream water, which require close monitoring, especially the low-lying areas outside the flood barriers in six districts of Phra Nakhon Si Ayutthaya province: Sena, Phak Hai, Bang Ban, Phra Nakhon Si Ayutthaya, Bang Pa-in, and Bang Sai districts.
Second Lieutenant Phattharadarasmi emphasized that residents living in low-lying areas along the Chao Phraya River and downstream of the dam, particularly in Phra Nakhon Si Ayutthaya province and surrounding areas, should closely monitor the water situation and official warnings. The government will manage water resources to the fullest capacity alongside monitoring accumulated rainfall to minimize impacts on the population.