The Director-General of the Royal Irrigation Department visited the Chao Phraya Dam to monitor the water situation and ordered water discharge adjusted to 1,750 cubic meters per second to cope with heavy rainfall in central Thailand through 27 September, focusing on proactive management to reduce downstream impacts.
On 24 September 2026, Mr. Witthaya Kaewmee, Director-General of the Royal Irrigation Department, along with Mr. Songkran Chaloesritong, Director of the 12th Irrigation Office, and Mr. Thanet Sombun, Director of the Water Management and Hydrology Bureau, visited the Chao Phraya Dam in Chainat Province to closely monitor the water situation in the Chao Phraya basin.
He revealed that continuous rainfall in the upper area over the past week has caused sustained water flow into the Chao Phraya basin. At 06:00 today, the C2 water station in Mueang District, Nakhon Sawan Province, recorded a water flow of 1,777 cubic meters per second.
To handle this water volume, the Royal Irrigation Department has managed the upstream water at the Chao Phraya Dam by gradually raising water levels upstream to slow the flow and reduce rapid impacts on downstream areas, while fully utilizing irrigation systems on both banks without affecting agricultural land.
Simultaneously, water discharge through the Chao Phraya Dam has been adjusted to 1,750 cubic meters per second to align with upstream water volumes and accommodate increased rainfall. Warning letters have been sent to relevant agencies and provinces upstream potentially affected to prepare for the situation.
Although current upstream water volume shows signs of decreasing, meteorological forecasts indicate increased rainfall in central Thailand between 24 and 27 September 2026, which may raise water volume and levels in the Chao Phraya basin accordingly.
Mr. Witthaya Kaewmee, Director-General of the Royal Irrigation Department, has instructed irrigation projects in the area to plan water management by continuously analyzing and assessing the situation to ensure maximum efficiency, prioritizing the safety of the public and irrigation infrastructure. He also emphasized the importance of communicating and warning the public with accurate and timely water situation information.
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