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Flooding and water management in central Thailand

Updated 3 times since CLSTR started tracking revisions of this situation.

What changed

2026-09-28 05:32 UTC → 2026-10-03 04:06 UTC · added removed

Following heavy rainfall in northern Thailand, the Royal Irrigation Department (RID) issued flood warnings for several central provinces as water inflow has implemented proactive measures to the Chao Phraya Dam increased. To manage these levels, the RID planned to increase discharge from 990 cubic meters per second to between 1,000 and 1,500 cubic meters per second, a move expected to raise downstream river levels by 0.5 to 1.5 meters. In response to the rising water, the Minister of Agriculture and Cooperatives, Suriya Juangroongruangkit, ordered the acceleration of water drainage flooding in the Khlong Rangsit Prayurasak area of Pathum Thani province. RID Director-General Witthaya Kaewmee inspected operations at the Rangsit semi-permanent pumping station, noting a strategy to move water from upper and central areas toward the Gulf of Thailand. This involves using the Khlong Lat Pho sluice gate and coastal pumping stations, such as Suvarnabhumi, Chonlaharn Phichit, and Charoen Rat, to maximize drainage efficiency. As monsoon rains and low-pressure systems continue, authorities have expanded management efforts to include industrial zones. Chao Phraya River basin. In Bangkok, the Industrial Estate Authority of Thailand is utilizing using large pumps to drain the Lat Krabang and Bang Chan industrial estates, where water levels in common areas have reached 20 to 50 centimeters. While water has entered common areas, officials reported no significant economic damage to factories. To protect low-lying and mitigate impacts on downstream communities, the Ministry of Agriculture and Cooperatives is working to slow water flow in upper reaches, clear obstructions, and coordinate sluice gate usage with tidal patterns to prevent a repeat of the 2011 floods. More recently, patterns. As the RID increased the water discharge rate at the Chao Phraya Dam from 1,950 to 2,000 cubic meters per second, Ang Thong province faced rising risks. In Ang Thong, flooding has impacted the Mueang, Pa Mok, Wiset Chai Chan, and Chaiyo districts, with water levels at a critical telemetry station reaching 7.92 meters, just 8 centimeters below the 8-meter threshold. More recently, the RID confirmed that discharge from the Chao Phraya and Pa Sak Jolasid dams is being managed to protect Bangkok’s embankments. The Chao Phraya Dam is currently discharging approximately 2,500 cubic meters per second. At the Sam Khok monitoring station in Pathum Thani, the average flow is approximately 2,382 cubic meters per second, remaining below the 3,600 cubic meter threshold that would threaten Bangkok. Meanwhile, the Pa Sak Jolasid Dam is utilizing a step-by-step discharge method to increase capacity for incoming water.

Versions

  1. 2026-10-03 04:06 UTC Flooding and water management in central Thailand
  2. 2026-09-28 05:32 UTC Flooding and water management in central Thailand
  3. 2026-09-28 05:02 UTC Flooding and water management in central Thailand
  4. 2026-09-26 04:06 UTC Flooding and water management in central Thailand

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