Thailand Water Situation Nov 14, 2026: Dam Levels and Rain Warnings

Thansettakij•Economy•53m ago

Reader Briefing

The Office of National Water Resources reports that national dam storage is at 82% capacity while warning of high sea levels and heavy rain in the South.

•National dam storage reached 66,296 million cubic meters, or 82% of capacity, as of November 13, 2026.
•18 medium-sized reservoirs have water levels below 30% across 5 regions.
•The Office of National Water Resources warned of high sea levels affecting 4 rivers and 3 main roads from November 9-14, 2026.
•Heavy rain continues in the Southern region due to the Northeast monsoon.

Overview

•National dam storage as of November 13, 2026, is 66,296 million cubic meters (82%), with 42,168 million cubic meters (74%) being usable water.
•The Western region has the highest water volume at 27,316 million cubic meters or 96% of capacity.
•18 medium-sized reservoirs have water levels below 30%, including 9 in the Northeast, 3 in the East, 3 in the South, 2 in the West, and 1 in the Central region.
•The Office of National Water Resources issued a warning for high sea levels from November 9-14, 2026, affecting Bang Pakong, Chao Phraya, Tha Chin, and Mae Klong rivers.
•High sea levels may cause overflow or flooding on Sukhumvit Road, Suksawat Road, and Rama 2 Road.
•Ratchaprapha Dam has 4,223 million cubic meters (75%) and Bang Lang Dam has 773 million cubic meters (53%) as of November 14, 2026.
•Heavy rain in the South is caused by a moderate Northeast monsoon covering the Gulf of Thailand and the Southern region.
•Total water resources are assessed as sufficient for usage until the end of the 2026/2027 dry season.

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Key Entities

Organization

Office of National Water Resources(สำนักงานทรัพยากรน้ำแห่งชาติ)

The agency reporting national water situations and issuing warnings on sea level rises.

Place

Southern Region(ภาคใต้)

A region experiencing heavy rain and containing the Ratchaprapha and Bang Lang dams.

Western Region(ภาคตะวันตก)

The region with the highest water storage volume at 96% capacity.

Eastern Region(ภาคตะวันออก)

A region with water storage at 91% capacity.

Central Region(ภาคกลาง)

A region with water storage at 77% capacity.

Northern Region(ภาคเหนือ)

A region with water storage at 76% capacity.

Northeastern Region(ภาคตะวันออกเฉียงเหนือ)

A region with water storage at 68% capacity and the most reservoirs with water levels below 30%.

Ratchaprapha Dam(เขื่อนรัชชประภา)ℹ️

A dam in the Southern region with 75% water capacity.

Bang Lang Dam(เขื่อนบางลาง)ℹ️

A dam in the Southern region with 53% water capacity.

Bang Pakong River(แม่น้ำบางปะกง)ℹ️

A river identified as a risk area for high sea level rises.

Chao Phraya River(แม่น้ำเจ้าพระยา)ℹ️

A river identified as a risk area for high sea level rises.

Tha Chin River(แม่น้ำท่าจีน)ℹ️

A river identified as a risk area for high sea level rises.

Mae Klong River(แม่น้ำแม่กลอง)ℹ️

A river identified as a risk area for high sea level rises.

Sukhumvit Road(ถนนสุขุมวิท)ℹ️

A main road at risk of flooding from high sea levels.

Suksawat Road(ถนนสุขสวัสดิ์)

A main road at risk of flooding from high sea levels.

Rama 2 Road(ถนนพระราม 2)

A main road at risk of flooding from high sea levels.

Nong Krong Kaeo(หนองกรองแก้ว)