Bangkok is accelerating water discharge to prepare for new rain waves on 5-6 and 10-11 October, closely monitoring northern water volumes and tidal influences. The city is coordinating with district offices to alert communities outside the flood barriers to prepare and watch for potential flooding.
On 4 October 2026 at 08:00, Wisanu Sapsompol, Deputy Governor of Bangkok, held an online meeting to update the water situation. Accompanied by Jesada Chantraprapa, Deputy Permanent Secretary of Bangkok, and executives from the Drainage Department, they reviewed water management, rain preparedness, and solutions to urban flooding, closely monitoring weather forecasts and anticipating rain on 5–6 and 10–11 October.
For today's rain situation (4 October 2026), a 40% chance of rainfall is expected across the area. In the afternoon, rain clouds will start forming in the east (Chachoengsao), moving towards Pathum Thani and Nonthaburi by evening. Bangkok will mainly see impacts in Lak Si and Don Mueang districts, with almost full area coverage by rain late at night.
From 5–6 October, rainfall amounts may remain moderate, but on 10–11 October, heavy rain accumulation of 100–150 millimeters is forecast. Bangkok intends to use the dry interval to accelerate water discharge and is coordinating weather forecast data directly from the Meteorological Department for close planning and response.
Regarding northern water levels, the Chao Phraya River at station C.13 currently flows at 2,500 cubic meters per second. Today’s peak water level is expected at 1.76 meters above mean sea level at the Navy Headquarters at 20:42. Bangkok’s flood barriers remain safe and unaffected by northern water. District offices have been advised to alert communities outside these barriers to prepare.
Mobile water pumps are stationed at key points: Lat Krabang district (Soi Romklao 24), Sai Mai district (Khlong Thanon), Khlong Sam Wa district (Theerawan Village), and Pruksa Chat Village. Areas still experiencing flooding requiring assistance include Saphan Sung district (Laem Thong Sports Village and Keha Thani Village), Min Buri district (Min Buri Garden Village and Soi Ramkhamhaeng 174, Bua Khao Inner Village), and Lat Krabang district.
Additionally, water discharge is being expedited at retention areas like Bueng Si Kan and Hua Mak, with controlled drainage through tunnels and Bueng Nong Bon to maximize outflow. Complaints from six districts collected via the Social Listening system are targeted for rapid response to assist residents who might otherwise be overlooked.
Regarding urban flooding on main and secondary roads (as of 4 October at 06:30):