Bangkok: The Royal Irrigation Department has issued a warning to monitor the Chao Phraya River basin as floodwaters from upstream are expected to increase. The Smart Water Operations Center (SWOC) of the Royal Irrigation Department has highlighted the need for close monitoring of the water situation in the Chao Phraya River basin. Recent observations indicate a continuous increase in water flow from upstream areas.
According to Thai News Agency, as of May 23, 2026, at 6:00 AM, the water flow rate at station C.2 in Mueang District, Nakhon Sawan Province, was recorded at 893 cubic meters per second (m³/s). This has led to a rise in the water level upstream of the Chao Phraya Dam to +16.54 meters above mean sea level (MSL). The dam is currently releasing water at a rate of 300 m³/s, with plans to maintain the upstream water level below +16.60 meters (MSL).
Projections suggest that the water flow through the Chao Phraya Dam might increase to approximately 500-700 cubic meters per second. This increase is based on water levels in upstream areas and recent rainfall, though it is not expected to impact downstream regions yet. The Royal Irrigation Department continues to monitor the situation, weather conditions, and water management strategies, while coordinating with relevant agencies. Residents in low-lying areas along the Chao Phraya River are advised to stay updated with news alerts, prepare for potential situations, and minimize public impact. Further details on the water situation are available at https://www2.rid.go.th/th/main.