RID Increases Chao Phraya Dam Discharge to 2,500 Cubic Meters/Second

MGR Online•Politics•24d ago

Reader Briefing

The Royal Irrigation Department is increasing water discharge through the Chao Phraya Dam to a maximum of 2,500 cubic meters per second due to rising northern water levels.

•The Royal Irrigation Department will gradually increase discharge starting September 30, 2026.
•The National Water Resources Committee approved the discharge limit of not more than 2,500 cubic meters per second.
•Low-lying areas outside embankments in Phra Nakhon Si Ayutthaya, Ang Thong, Sing Buri, and Chai Nat provinces are warned of rising water levels.
•Water levels in affected low-lying areas are expected to rise by 15–30 centimeters.

Overview

•Heavy rain and accumulated rainfall in upper areas caused northern water flowing into the Chao Phraya River to increase continuously.
•As of September 30, 2026, at 20:00, station C.2 in Nakhon Sawan Province recorded a flow of 2,565 cubic meters per second.
•The National Water Resources Committee approved the Royal Irrigation Department to adjust discharge through the Chao Phraya Dam to not exceed 2,500 cubic meters per second.
•The Royal Irrigation Department began step-by-step discharge adjustments from 2,200 to 2,300 cubic meters per second starting at 21:00 on September 30, 2026, and continuing to October 1, 2026.
•Water levels in low-lying areas outside embankments are expected to rise by approximately 15–30 centimeters.
•The Royal Irrigation Department warned residents and operators along the Chao Phraya River and Noi River to monitor the situation closely.
•Areas requiring vigilance include specific districts in Phra Nakhon Si Ayutthaya, Ang Thong, Sing Buri, and Chai Nat provinces.
•The Royal Irrigation Department will use irrigation systems on both banks and space above the dam to slow water and will gradually reduce discharge if no further rain occurs.

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Key Entities

Organization

Royal Irrigation Department(กรมชลประทาน)

The agency responsible for managing water discharge through the Chao Phraya Dam and issuing warnings to affected areas.

National Water Resources Committee(คณะกรรมการทรัพยากรน้ำแห่งชาติ)

The committee that approved the adjustment of water discharge through the Chao Phraya Dam.

Place

Chao Phraya Dam(เขื่อนเจ้าพระยา)ℹ️

The dam through which water discharge is being adjusted to manage northern water flows.

Chao Phraya River(แม่น้ำเจ้าพระยา)ℹ️

The river receiving increased water flow from the north.

Sakae Krang River(แม่น้ำสะแกกรัง)ℹ️

A river providing supplemental water flow at station Ct.19 in Uthai Thani.

Noi River(แม่น้ำน้อย)ℹ️

A river along which people are warned to monitor the water situation.

Khlong Lat Pho(คลองลัดโพธิ์)ℹ️

The canal used to accelerate water drainage into the sea based on tides.

Nakhon Sawan Province(จังหวัดนครสวรรค์)ℹ️

The location of water monitoring station C.2.

Uthai Thani(อุทัยธานี)ℹ️

The location of water monitoring station Ct.19.

Phra Nakhon Si Ayutthaya Province(จ.พระนครศรีอยุธยา)ℹ️

A province with low-lying areas outside embankments that must monitor water levels.

Ang Thong Province(จ.อ่างทอง)ℹ️

A province with low-lying areas outside embankments that must monitor water levels.

Sing Buri Province(จ.สิงห์บุรี)ℹ️

A province with low-lying areas outside embankments that must monitor water levels.

Chai Nat Province(จ.ชัยนาท)ℹ️

A province with low-lying areas outside embankments that must monitor water levels.