RID Explains Chao Phraya Dam Discharge Increases

Khaosod•Society•23d ago

Reader Briefing

The Royal Irrigation Department is gradually increasing water discharge from the Chao Phraya Dam to manage accumulated water and risks to upstream areas.

•The Royal Irrigation Department clarified reasons for increasing discharge at the Chao Phraya Dam on October 2, 2026.
•Water from the Ping, Nan, and Yom rivers converges at Nakhon Sawan before flowing into the Chao Phraya Dam.
•The Royal Irrigation Department is managing water by delaying flow above the dam and diverting water into irrigation systems on both the east and west sides.
•People in low-lying areas along the river and outside embankments are warned to monitor official announcements.

Overview

•On October 2, 2026, the Royal Irrigation Department clarified the reasons for increasing water discharge at the Chao Phraya Dam.
•The Royal Irrigation Department stated that although some northern points see water levels decrease, water that flowed earlier takes time to travel to the Chao Phraya Dam.
•The Royal Irrigation Department is managing water levels above the dam to delay flow and receiving water into irrigation systems on the east and west sides based on capacity.
•The Royal Irrigation Department must gradually increase discharge to control water levels and reduce risks to areas above the dam.
•The Royal Irrigation Department considers main river levels, tributary water, local rain, and sea level rise when adjusting discharge for lower areas.
•Water reaching the Chao Phraya Dam remains high with accumulated water above the dam.
•The Royal Irrigation Department warns people in upstream and downstream areas, particularly low-lying areas and those outside embankments, to monitor official announcements.

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Key Entities

Organization

Royal Irrigation Department(กรมชลประทาน)

The agency responsible for managing water discharge at the Chao Phraya Dam and irrigation systems.

Place

Chao Phraya Dam(เขื่อนเจ้าพระยา)ℹ️

The dam where water from the Ping, Nan, and Yom rivers converges and is managed for discharge.

Ping River(แม่น้ำปิง)ℹ️

A river in the upper area that contributes water to the Chao Phraya River.

Nan River(แม่น้ำน่าน)ℹ️

A river in the upper area that receives water from the Yom River and contributes to the Chao Phraya River.

Yom River(แม่น้ำยม)ℹ️

A river that flows into the Nan River.

Chao Phraya River(แม่น้ำเจ้าพระยา)ℹ️

The river formed by the convergence of the Ping and Nan rivers at Nakhon Sawan.

Nakhon Sawan Province(จังหวัดนครสวรรค์)ℹ️

The location where the Ping and Nan rivers merge to become the Chao Phraya River.