Bangkok: The government has announced that the Chao Phraya basin retains sufficient capacity in its four main reservoirs to absorb an additional 9,999 million cubic meters of water, as the water level in Nakhon Sawan remains 6.62 meters below the riverbank.
According to Thai News Agency, Ms. Lalida Periswiwatana, Deputy Spokesperson for the Prime Minister's Office, provided insights into the water situation in the Chao Phraya River basin amidst the ongoing rainy season. Data up to August 23, 2026, indicates that the basin can still accommodate additional water. The water level at station C.2 in Nakhon Sawan province remains significantly below the riverbank, despite an increase in water flow to 798 cubic meters per second from the previous day's 648 cubic meters per second.
The Deputy Spokesperson highlighted the situation in the four main reservoirs-Bhumibol Dam, Sirikit Dam, Kwae Noi Bamrung Dan Dam, and Pa Sak Chonlasit Dam-which currently hold a total of 14,783 million cubic meters of water, approximately 60 percent of their total capacity. These reservoirs are capable of holding another 9,999 million cubic meters of water.
In the central region, the government is actively monitoring the situation in eight provinces within the Chao Phraya River basin: Sing Buri, Ang Thong, Phra Nakhon Si Ayutthaya, Lop Buri, Saraburi, Pathum Thani, Nonthaburi, and Samut Prakan, including Bangkok. As of August 23, 2026, there have been no reports of flooding in these areas. However, authorities are closely monitoring rainfall and water levels to ensure effective management and communication of information to the public.
Ms. Lalida further noted that in the lower Chao Phraya basin, specifically in Sam Khok District, Pathum Thani Province, the water flow rate has increased to 268 cubic meters per second from 166 cubic meters per second the previous day. Water is also being diverted into the eastern and western flood control systems at rates of 186 and 211 cubic meters per second, respectively, as part of the basin's water management efforts.
The current rise in water volume in certain areas necessitates careful consideration of the water level and the area's capacity to handle more water. Ms. Lalida emphasized the government's ongoing monitoring of upstream rainfall, river levels, and water retention areas to enable timely responses as situations evolve.
Thailand is currently experiencing thunderstorms and heavy rainfall due to the monsoon trough, but Tropical Storm "Nara" in the Gulf of Tonkin is not expected to significantly impact the nation, as it is projected to make landfall in China's Guangxi Province between August 24-25, 2026. Nonetheless, the public is advised to remain aware of weather forecasts, particularly on days of heavy rainfall.
The Sub-Committee on Flood and Drought Prevention and Mitigation in the Chao Phraya River Basin convened on August 23rd to review preparedness measures, with a focus on proactive strategies and continuous monitoring. Chaired by Mr. Surasak Panjaroenvorakul, Minister of Tourism and Sports, and advised by Mr. Paradorn Prisnanantakul, Minister attached to the Prime Minister's Office, the meeting included representatives from relevant agencies, stressing the importance of readiness.
Residents in the Chao Phraya basin are encouraged to stay informed about weather conditions and water levels from official sources, particularly those residing near rivers or in flood-prone areas, to ensure appropriate preparation for any potential changes. The government, in collaboration with local agencies, will maintain vigilant monitoring throughout the rainy season.