Thailand’s Royal Irrigation Department says it is prepared for possible El Nino conditions in 2026, stepping up nationwide water management and drought relief in areas at risk. The agency warned that below-normal rainfall could affect supplies, with cumulative rainfall from the start of the year to mid-April recorded at 57% below normal. Despite this, reservoir levels remain manageable, helping to reduce immediate risks.
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The department’s Smart Water Operation Centre outlined that Thailand is likely to enter an El Nino period by mid-year, which typically brings drier conditions. Current water storage in large and medium-sized reservoirs stands at more than 47.18 billion cubic metres, or 62% of total capacity, about 1.99 billion cubic metres higher than the same period last year. Authorities have been monitoring weather patterns closely and planning water use in advance.
Officials said that although the overall situation is under control, lower rainfall combined with rising demand could lead to shortages, especially in areas outside irrigation zones. During the current dry season, more than 29.85 billion cubic metres of water have already been used, representing 89% of the planned allocation. In the Chao Phraya River basin, water distribution is being carefully managed to meet demand while preserving reserves for the upcoming rainy season.
The department is coordinating with the Office of the National Water Resources, the Thai Meteorological Department and local authorities to assess conditions and adjust plans accordingly. Measures include planning water management two years ahead, improving storage during the rainy season, controlling water releases, adjusting crop cultivation, and promoting Reduce, Reuse and Recycle practices to improve efficiency.
Authorities have also accelerated assistance in drought-prone areas, deploying more than 6,700 units of machinery, pumps and water trucks. Of these, 597 units have already been used across 46 provinces. An irrigation employment programme has hired more than 47,856 workers, providing income support while helping address drought-related challenges.
Water quality monitoring continues in major rivers, with salinity levels reported to remain within normal limits and safe for consumption and agriculture. Officials said they will keep tracking both water quantity and quality while adapting management plans to ensure sufficient supply and minimise future shortages.
The Nation reported that the Royal Irrigation Department said it will continue close surveillance of weather conditions and water reserves as the anticipated El Nino period develops. Adjustments to water allocation and conservation measures are expected as conditions evolve through the year.
Pictures courtesy of The Nation
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Adapted by ASEAN Now Nation 25 Apr 2026
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