Flood-prone areas have been opened for monitoring to prepare for river overflow as of 1 Oct 2026. Attention is on northern water moving close to Bangkok, with vigilance for repeated rainfall from 4–6 Oct 2026.
Since the flooding began on 25 Sept 2026 until today, 1 Oct 2026, officials from multiple agencies have been rushing to assist affected people in various districts but must continue monitoring for river overflow and repeated rain because water levels in many rivers and basins remain high, causing localized flooding.
High-risk flood areas across all five regions.
Chao Phraya Basin: 5 provinces at risk.
1. Chainat Province
Thammamun Subdistrict, Mueang Chainat District.
2. Singburi Province
Phrom Buri Subdistrict, Phrom Buri District.
3. Pathum Thani Province
Lak Hok Subdistrict, Mueang Pathum Thani District.
4. Phra Nakhon Si Ayutthaya Province
Hua Wiang Subdistrict, Sena District.
Bang Luang Dot Subdistrict, Bang Ban District.
Sai Noi Subdistrict, Bang Ban District.
Ban Pom Subdistrict, Phra Nakhon Si Ayutthaya District.
Ban Krot Subdistrict, Bang Pa-in District.
Pho Sam Ton Subdistrict, Bang Pa-han District.
Khonon Luang Subdistrict, Bang Pa-in District.
Saphan Thai Subdistrict, Bang Ban District.
5. Samut Prakan Province
Bang Krasop Subdistrict, Phra Pradaeng District.
Bang Yo Subdistrict, Phra Pradaeng District.
Bang Krachao Subdistrict, Phra Pradaeng District.
Tha Chin Basin: 2 provinces at risk.
1. Suphan Buri Province
Bang Ta Thoen Subdistrict, Song Phi Nong District.
Song Phi Nong Subdistrict, Song Phi Nong District.
Tha Phi Liang Subdistrict, Mueang Suphan Buri District.
Sam Chuk Subdistrict, Sam Chuk District.
2. Nakhon Pathom Province
Bang Sai Pa Subdistrict, Bang Len District.
Nakhon Chai Si Subdistrict, Nakhon Chai Si District.
Bang Len Subdistrict, Bang Len District.
Thaiyawat Subdistrict, Nakhon Chai Si District.
1. Phetchabun Province
Na Chaliang Subdistrict, Nong Phai District.
Sa Pradu Subdistrict, Wichian Buri District.
2. Phra Nakhon Si Ayutthaya Province
Tha Ruea Subdistrict, Tha Ruea District.
Sakae Krang Basin
Pang Maka Subdistrict, Khanu Woralaksaburi District, Kamphaeng Phet Province.
Western Region
1. Kanchanaburi Province
Tha Sao Subdistrict, Sai Yok District.
Loom Soom Subdistrict, Sai Yok District.
Loom Rang Subdistrict, Bo Phloi District.
Lat Ya Subdistrict, Mueang Kanchanaburi District.
Sai Yok Subdistrict, Sai Yok District.
Nong Ya Subdistrict, Mueang Kanchanaburi District.
2. Ratchaburi Province
Ban Pong Subdistrict, Ban Pong District.
Boek Phrai Subdistrict, Ban Pong District.
Chet Samian Subdistrict, Photharam District.
Phetchaburi - Prachuap Khiri Khan Basins
Klad Luang Subdistrict, Tha Yang District, Phetchaburi Province.
Bang Taboon Ok Subdistrict, Ban Laem District, Phetchaburi Province.
Chum Saeng Songkhram Subdistrict, Bang Rakam District, Phitsanulok Province.
Bang Rakam Subdistrict, Bang Rakam District, Phitsanulok Province.
Eastern Region
Bang Pakong Basin: 4 provinces at risk.
1. Nakhon Nayok Province
Ongkharak Subdistrict, Ongkharak District.
2. Prachinburi Province
Na Mueang Subdistrict, Mueang Prachinburi District.
Prachantakham Subdistrict, Prachantakham District.
Ban Tham Subdistrict, Si Maha Phot District.
Bo Thong Subdistrict, Kabin Buri District.
Si Maha Phot Subdistrict, Si Maha Phot District.
Mueang Kao Subdistrict, Kabin Buri District.
3. Sa Kaeo Province
Ban Kaeng Subdistrict, Mueang Sa Kaeo District.
Sra Kwan Subdistrict, Mueang Sa Kaeo District.
4. Chachoengsao Province
Ko Khanun Subdistrict, Phanom Sarakham District.
Bang Khanak Subdistrict, Bang Nam Priao District.
1. Rayong Province
Ban Na Subdistrict, Klaeng District.
Krasae Bon Subdistrict, Klaeng District.
2. Chanthaburi Province
Wang Mai Subdistrict, Na Yai Am District.
Tonle Sap Basin
Ban Mai Nong Sai Subdistrict, Aranyaprathet District, Sa Kaeo Province.
1. Nakhon Ratchasima Province
Kut Phiman Subdistrict, Dan Khun Thot District.
2. Surin Province
Tra Sang Subdistrict, Mueang Surin District.
However, although no risk areas have been reported in the South by relevant agencies, close monitoring is still required for flash floods and heavy rain.