Nation Thailand
Thailand steps up southern flood preparations as Chao Phraya water levels face renewed pressure
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Thailand's Office of the National Water Resources (ONWR) has placed eight southern provinces under heightened surveillance as two periods of heavy to very heavy rain threaten flash floods, runoff and landslides, particularly in foothill communities.
Key facts
- The first period is expected from 11–14 November 2026, followed by another from 18–21 November.
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- Meanwhile, authorities expect drainage from the 11 low-lying flood retention areas in the Chao Phraya basin to be completed by mid-January 2027, allowing conditions to return to normal.
- Despite relatively high water storage levels at major reservoirs and dams nationwide, ONWR has instructed agencies to prepare detailed allocation plans for the 2026–2027 dry season.
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Summary
The first period is expected from 11–14 November 2026, followed by another from 18–21 November.
The provinces identified for special monitoring are Chumphon, Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, Pattani, Yala and Narathiwat.