Pa Sak Jolasid Dam Water volume has exceeded capacity by 106%. Plans are underway to increase water discharge to handle heavy rains expected from 3–6 October. The Lopburi governor is monitoring the situation and has warned downstream residents to stay vigilant.
On 30 September 2026, Mr. Weeraphong Ritrod, Governor of Lopburi Province, coordinated with relevant agencies to closely monitor the water situation at Pa Sak Jolasid Dam in Phatthana Nikhom District, Lopburi Province. The dam’s reservoir recently exceeded 100% capacity. This site visit aimed to assess the inflow and urgently plan water discharge. Mr. Ong-art Saenubon, Director of the Royal Irrigation Office Region 10, and Mr. Wasawat Naknuan, Director of the Pa Sak Jolasid Water Delivery and Maintenance Project, reported on the dam’s status. Currently, the dam holds 930.78 million cubic meters of water, equivalent to 106.80% of its normal capacity. The inflow is 550.27 cubic meters per second (47.54 million cubic meters per day), while discharge is 115.08 cubic meters per second (9.94 million cubic meters per day).
To control the water level and volume within appropriate limits, the Pa Sak Jolasid Water Delivery and Maintenance Project has increased discharge from 25 cubic meters per second to 115 cubic meters per second on 30 September 2026, with plans to step up to 400 cubic meters per second by 2 October 2026, adjusting in stages.
Governor Weeraphong Ritrod outlined water management strategies for Lopburi Province, noting that the dam’s water volume has exceeded storage capacity at about 102%. The Meteorological Department forecasts a monsoon trough will pass over the lower northern region, central region, and Lopburi between 3–6 October, bringing heavy rain and additional inflow to the dam. The water management committee has therefore resolved to gradually increase discharge rates to prepare space for new inflow and maintain dam stability. Lopburi Province, together with the Royal Irrigation Department, will monitor weather and inflow continuously 24 hours a day. They will also coordinate warnings to downstream residents, especially those near Rama VI Dam and in Phatthana Nikhom District, advising vigilance and readiness.
