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ONWR warns 8 provinces of high sea level rise Oct 31 – Nov 4

ONWR warns 8 provinces of high sea level rise Oct 31 – Nov 4

Matichon•General•24m ago

Reader Briefing

The Office of the National Water Resources has issued a warning for eight provinces regarding high sea level rise between October 31 and November 4, 2026.

  • •The Office of the National Water Resources warns of high sea levels from October 31 to November 4, 2026.
  • •Eight provinces including Bangkok, Nonthaburi, and Pathum Thani are advised to monitor the situation.
  • •Sea levels are expected to rise 0.30 – 0.50 meters above critical levels due to easterly winds.
  • •Potential flooding may affect the Bang Pakong, Chao Phraya, Tha Chin, and Mae Klong rivers.

Overview

  • •Easterly winds covering Thailand and the Gulf of Thailand are causing sea levels to rise.
  • •The Office of the National Water Resources warns that river levels connecting to the sea may rise 0.30 – 0.50 meters above critical levels.
  • •Flooding may occur along the Bang Pakong, Chao Phraya, Tha Chin, and Mae Klong rivers from October 31 to November 4, 2026.
  • •Risk areas include communities outside flood walls, areas without permanent defenses, and Sukhumvit, Suksawat, and Rama 2 roads.
  • •The Office of the National Water Resources requests relevant agencies in Chachoengkhao, Samut Prakan, Bangkok, Nonthaburi, Pathum Thani, Samut Sakhon, Nakhon Pathom, and Samut Songkhram to monitor the situation.
  • •As of October 31, total reservoir water volume is 66,538 million cubic meters, or 82% of total storage capacity.
  • •Reservoir water levels in the Western region are at 97% capacity, the highest among all regions.
  • •From November 1 – 4, 69, upper Thailand is expected to have thunderstorms in some areas while rain in the South decreases.

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Source: Matichon (Original)

Key Entities

Organization

Office of the National Water Resources(สำนักงานทรัพยากรน้ำแห่งชาติ)ℹ️
The agency that issued the warning regarding high sea level rise in eight provinces.

Place

Chachoengkhao(ฉะเชิงเทรา)
One of the eight provinces warned to monitor high sea level rise.
Samut Prakan(สมุทรปราการ)ℹ️
One of the eight provinces warned to monitor high sea level rise.
Bangkok(กรุงเทพมหานคร)ℹ️
One of the eight provinces warned to monitor high sea level rise.
Nonthaburi(นนทบุรี)ℹ️
One of the eight provinces warned to monitor high sea level rise.
Pathum Thani(ปทุมธานี)ℹ️
One of the eight provinces warned to monitor high sea level rise.
Samut Sakhon(สมุทรสาคร)ℹ️
One of the eight provinces warned to monitor high sea level rise.
Nakhon Pathom(นครปฐม)ℹ️
One of the eight provinces warned to monitor high sea level rise.
Samut Songkhram(สมุทรสงคราม)ℹ️
One of the eight provinces warned to monitor high sea level rise.
Bang Pakong River(แม่น้ำบางปะกง)ℹ️
A river at risk of flooding due to high sea levels.
Chao Phraya River(แม่น้ำเจ้าพระยา)ℹ️
A river at risk of flooding due to high sea levels.
Tha Chin River(แม่น้ำท่าจีน)ℹ️
A river at risk of flooding due to high sea levels.
Mae Klong River(แม่น้ำแม่กลอง)ℹ️
A river at risk of flooding due to high sea levels.
Sukhumvit Road(ถนนสุขุมวิท)ℹ️
A road identified as a risk area for flooding.
Suksawat Road(ถนนสุขสวัสดิ์)
A road identified as a risk area for flooding.
Rama 2 Road(ถนนพระราม 2)
A road identified as a risk area for flooding.
Phitsanulok(พิษณุโลก)ℹ️
Province in the North with maximum rainfall of 66 mm on October 31.
Si Sa Ket(ศรีสะเกษ)ℹ️
Province in the Northeast with maximum rainfall of 48 mm on October 31.
Sa Kaeo(สระแก้ว)ℹ️
Province in the East with maximum rainfall of 29 mm on October 31.
Prachuap Khiri Khan(ประจวบคีรีขันธ์)ℹ️
Province in the West with maximum rainfall of 137 mm on October 31.
Phang Nga(พังงา)ℹ️
Province in the South with maximum rainfall of 66 mm on October 31.
Ratchaprapha(รัชชประภา)
A dam in the South with 76% of its storage capacity filled.
Bang Lang(บางลาง)ℹ️
A dam in the South with 53% of its storage capacity filled.