DDPM warns of more rain as Pa Sak Jolasid exceeds capacity

Thailand’s Department of Disaster Prevention and Mitigation (DDPM) has warned of another increase in rainfall from October 9–13, while authorities closely monitor the Pa Sak basin after Pa Sak Jolasid Dam reached 110% of its normal storage capacity.

The DDPM said on Tuesday (October 6) that the National Disaster Prevention and Mitigation Command was monitoring weather, flooding and water levels in major rivers nationwide and had instructed agencies to prepare for further rainfall.

More rain forecast for October 9–13

Heavy rain was expected on October 6 across the North, Central region, Bangkok and surrounding provinces, the East and the South.

On October 7, heavy rain was forecast mainly in western parts of the North and Central region.

Rainfall is then expected to increase again from October 9–13 in the East, Central region, Bangkok and its vicinity, and the South.

Authorities have urged residents in risk areas to closely follow official forecasts and warnings.

Chao Phraya Dam maintains 2,500 cu m/s discharge

The Chao Phraya Dam continues to discharge water at 2,500 cubic metres per second, with downstream conditions described as stable and showing a continuing downward trend.

At Rama VI Barrage, water flow stood at 719 cubic metres per second, with the river level 0.64 metres above the bank.

Communities along the Pa Sak River have been told to remain vigilant, although authorities said the discharge would not affect Bangkok.

Pa Sak Jolasid Dam at 110%

Large and medium-sized reservoirs nationwide are holding more than 82% of their combined storage capacity, according to the DDPM.

Particular attention is being given to Pa Sak Jolasid Dam, where water levels continue to rise and storage has reached about 110% of normal capacity.

High tides could slow drainage

Authorities are also monitoring afternoon high tides, which can affect the speed at which water drains towards the sea.

Water releases are being timed to coincide with tidal conditions to improve drainage efficiency and reduce impacts on downstream areas.

The DDPM urged residents, particularly those along the Pa Sak River and in areas forecast to receive further heavy rain, to remain alert and prepare for changing conditions.

People affected by flooding or other disasters can contact the 1784 disaster hotline, available 24 hours a day.