The Department of Disaster Prevention and Mitigation (DDPM) is coordinating with 10 central provinces and Bangkok to monitor water levels in the Chao Phraya River which are rising from 27 August to 2 September 2026. Residents in risk areas are warned to prepare for the situation and move belongings to higher ground to avoid floodwaters.
On 27 August 2026 at 11:00 a.m., the Department of Disaster Prevention and Mitigation (DDPM), acting as the Central Disaster Prevention and Mitigation Command Center (CDPMCC), received a report from the Royal Irrigation Department warning about the Chao Phraya River basin water situation, issue number 1, forecasting conditions for the next 1 to 9 days. On 28 August 2026, at station C.2 in Mueang Nakhon Sawan District, Nakhon Sawan Province, the flow is expected to be about 1,000 to 1,100 cubic meters per second. The flow from tributaries is estimated at 60 to 100 cubic meters per second, making the total inflow above the Chao Phraya Dam between 1,100 and 1,200 cubic meters per second, with irrigation water intake on both sides at 400 to 450 cubic meters per second.
Given this situation, it is necessary to release water downstream of the Chao Phraya Dam at a rate between 700 and 1,000 cubic meters per second, which will raise water levels by approximately 0.60 to 1.5 meters above current levels in the lowland areas outside flood barriers in Sena, Phak Hai, Bang Ban, Bang Pa-in, and Bang Sai districts of Phra Nakhon Si Ayutthaya Province. This release will not affect residential community areas.
The Central Disaster Prevention and Mitigation Command Center (CDPMCC) has therefore coordinated with 10 central provinces — Uthai Thani, Chai Nat, Sing Buri, Ang Thong, Suphan Buri, Phra Nakhon Si Ayutthaya, Lopburi, Pathum Thani, Nonthaburi, and Samut Prakan — as well as Bangkok, to closely monitor the water situation, especially in lowland areas outside flood barriers. They have also publicized warnings to related agencies and private sector operators along the river, such as riverbank protection construction, restaurants, and public ferry piers.
They have also informed residents living along both banks of the river and in low-lying vulnerable areas to watch for rising water levels and to prepare for the situation, including moving belongings to higher ground to stay safe from flooding.
Additionally, local administrative organizations and relevant agencies have been asked to inspect and reinforce flood barriers and defenses to prevent water from overflowing. They are also preparing disaster relief equipment and machinery to provide assistance to residents 24 hours a day.
Residents in the affected areas are urged to closely follow official news, strictly adhere to recommendations, and prepare for potential disaster situations. Those affected can report incidents and request assistance via the DDPM emergency Line "1784" by adding the Line ID @1784DDPM, or by calling the emergency hotline 1784, available 24/7.
Thanks to the Facebook page of the Department of Disaster Prevention and Mitigation (DDPM).