Pa Sak Jolasid Dam has issued an urgent notice warning the public to stay vigilant and monitor the dam's water situation closely, as continuous inflows are increasing reservoir levels. The dam plans to increase water discharge, which will raise water levels in the Pa Sak River by approximately 3.50 to 4.00 meters above current levels. Residents are advised to follow the water situation carefully.
On 28 September 2026, reporters covering the water situation at Pa Sak Jolasid Dam in Lopburi province reported that Mr. Wasawat Naknuan, Director of the Pa Sak Jolasid Water Delivery and Maintenance Project, issued the first urgent notice.
The notice stated that as of 28 September 2026, the dam held 840.94 million cubic meters of water, representing 96.49% of capacity. The inflow was 737.78 cubic meters per second, or 63.74 million cubic meters per day, while the discharge was 25.07 cubic meters per second, or 2.17 million cubic meters per day.
According to the Royal Irrigation Department's seven-day forecast, inflows will continue steadily, totaling approximately 373.22 million cubic meters. To maintain appropriate water levels and volume in the dam, the Pa Sak Jolasid Water Delivery and Maintenance Project will increase discharge from 25 cubic meters per second (2.17 million cubic meters per day) to 400 cubic meters per second (34.56 million cubic meters per day).
The discharge will be increased in stages starting 30 September 2026 as follows:
On 30 September 2026, discharge will be increased to 115 cubic meters per second, or 9.97 million cubic meters per day.
On 1 October 2026, discharge will be increased to 230 cubic meters per second, or 19.87 million cubic meters per day.
On 2 October 2026, discharge will be increased to 400 cubic meters per second, or 34.56 million cubic meters per day.
Therefore, to prevent damage to residents' property caused by the expected 3.50 to 4.00 meter rise in the Pa Sak River's water level downstream, which remains within the river channel and will not overflow the riverbanks, authorities urge public dissemination of this warning and close monitoring of the water situation.