Authorities across the Chao Phraya River basin are monitoring rising water levels as upstream flows meet high sea tides, prompting emergency warnings and local visits from government officials in areas outside permanent flood barriers.
October brings seasonal tides and heavy upstream runoff. The Nonthaburi Provincial Administration issued a formal notice warning residents across three districts and 30 low-lying communities outside flood defenses to prepare for swelling waters between October 5 and October 19.
Nonthaburi Issues Emergency Warnings For Tidal Surges
The warning covers riverside areas in Mueang Nonthaburi, Pak Kret, and Bang Kruai. Officials point to a combination of high sea tides predicted by the Hydrographic Department of the Royal Thai Navy near Phra Chun Jeaktom Fort in Samut Prakan and substantial water releases from northern dams.
Among the 30 locations listed for potential overflow are the Wat Khang Khao community in Moo 2 and Moo 4, the riverside settlements around Tha It, and historic spots like Koh Kret.
Chao Phraya Dam Water Flow Remains Below Floodwalls
Water flowing through the Chao Phraya Dam in Chai Nat Province has reached 2,500 cubic meters per second. Meanwhile, the C.29B monitoring station in Samuk Tok, Pathum Thani, recorded an average flow of 2,382 cubic meters per second, safely below the threshold that would threaten Bangkok’s primary floodwalls.
The Royal Irrigation Department reported that the peak flow at the C.2 station in Nakhon Sawan has already passed and is now trending downward. To manage the volume, authorities are releasing water from the Pa Sak Jolasit Dam in a step-by-step fashion to build storage capacity without straining downstream drainage channels.
Further south, the agency has mobilized eastern drainage systems to push runoff toward the Gulf of Thailand.
Ministers Deliver Emergency Supplies in Ayutthaya
Government officials traveled directly to hard-hit agricultural districts to distribute emergency supplies. Surasak Phancharoenworakul, Minister of Tourism and Sports, joined provincial leaders including Phra Nakhon Si Ayutthaya Governor Chawanin Wongsathitjirakarn and local military commanders to visit affected families in Bang Ban and Phak Hai.
The delegation delivered relief bags starting from tambon Bang Luang Dot and tambon Bang Hak, moving by boat through flooded lanes to reach residents whose homes are inundated. Relief stops also included Wat Tako and Wat Yan Ang Thong before concluding at the Kutee drainage sluice gate.
Bangkok Records Century-Scale Rainfall Intensity
Seri Suparatid noted that accumulated rainfall between September 20 and 27 heavily concentrated on Bangkok’s eastern districts, punctuated by an extreme cloudburst of 230 millimeters within a single hour—an intensity calculated to occur roughly once every 100 years.
While current runoff remains far below the historic volumes seen during the severe 2011 floods, experts and agencies continue to monitor conditions as central regions brace for additional rain bands forecast through mid-October.