DDPM reports 1.37m people still affected by floods on October 20

Thailand’s Department of Disaster Prevention and Mitigation (DDPM) reported continuing flooding in 19 provinces and Bangkok on Tuesday (October 20, 2026), although water levels were stabilising or receding. Authorities were accelerating drainage and recovery operations while preparing for another period of heavy rain through October 25.

The DDPM’s Disaster Relief Operations Centre recorded 450,944 affected households, comprising 1,367,191 people, in its October 20 update based on information at 6am. The detailed provincial breakdown covered 78 districts, 595 subdistricts and 4,081 villages, with Bangkok listed separately.

DDPM director-general Nirat Pongsitthaworn attributed the flooding to accumulated heavy to very heavy rainfall, compounded by water flowing from northern Thailand into the Central region’s river basins. The combined flows had caused rivers to overflow and left standing floodwater in several areas.

The DDPM, under the Interior Ministry, is coordinating personnel, operational vehicles and disaster-response machinery with partner agencies to drain inundated communities and help residents resume their normal lives.

DDPM prepares for heavy rain through October 25

The DDPM has coordinated with authorities in the lower Northeast, Central region, Bangkok and surrounding provinces, the East and the South to prepare for heavy to very heavy rainfall and gusty winds during October 20–25.

Despite improving water levels, DDPM personnel are maintaining round-the-clock weather monitoring. The department has identified risks from flash flooding in low-lying areas, fast-moving runoff near foothills and waterways, and river overflows as water passes through major channels.

Long-distance water pumps, flat-bottomed boats, mobile power-generation vehicles and rapid-response teams are being prepared for immediate deployment if further emergencies occur, the DDPM said.

Bangkok flooding affects 210,648 households

Bangkok accounted for 210,648 affected households across Lat Krabang, Nong Chok and Min Buri, according to the DDPM’s update. Flooding covered 16 subdistricts in the capital’s three eastern districts, with four deaths reported.

Water levels in the affected Bangkok districts were stabilising and beginning to decline, the department reported.

Phitsanulok and Nakhon Sawan report falling water levels

The DDPM reported receding floodwater in both affected northern provinces, Phitsanulok and Nakhon Sawan.

Phitsanulok: Flooding in Bang Rakam district affected 69 households across four subdistricts and seven villages.

Nakhon Sawan: A total of 763 households were affected in Phayuha Khiri, Mueang Nakhon Sawan, Chum Saeng and Tha Tako districts. The affected area covered 19 subdistricts and 104 villages.

Four eastern provinces remain flooded

Water levels were falling in Nakhon Nayok, Prachin Buri, Chachoengsao and Chon Buri, although communities in all four provinces remained affected, according to the DDPM.

Nakhon Nayok: Flooding affected 23,835 households in Ongkharak and Ban Na districts, covering 12 subdistricts and 117 villages. Six deaths had been reported.

Prachin Buri: A total of 40,308 households were affected across Mueang Prachin Buri, Si Maha Phot, Ban Sang and Si Mahosot districts. Flooding covered 36 subdistricts and 342 villages, with a cumulative 26 deaths reported.

Chachoengsao: Flooding affected 22,224 households in Bang Nam Priao, Mueang Chachoengsao, Bang Khla, Khlong Khuean and Ratchasan districts. The affected area covered 38 subdistricts and 365 villages, with seven deaths reported.

Chon Buri: Standing floodwater in Phanat Nikhom district affected 512 households across five subdistricts and 38 villages.

Flooding persists in 13 Central provinces

The DDPM’s Central region breakdown listed 13 affected provinces, with water levels declining in each. Phra Nakhon Si Ayutthaya, a major area receiving floodwater, recorded 74,110 affected households.

Uthai Thani: Flooding affected 1,445 households in Mueang Uthai Thani, Sawang Arom and Ban Rai districts, covering 15 subdistricts and 51 villages.

Lop Buri: Standing floodwater in Mueang Lop Buri district affected 142 households across two subdistricts and eight villages.

Sing Buri: Flooding affected 46 households in In Buri and Phrom Buri districts, covering three subdistricts and six villages. Two deaths had been reported.

Suphan Buri: A total of 22,598 households were affected across eight districts: Bang Pla Ma, Song Phi Nong, Don Chedi, Si Prachan, Mueang Suphan Buri, Sam Chuk, U Thong and Doem Bang Nang Buat. Flooding covered 66 subdistricts and 560 villages, with five deaths reported.

Kanchanaburi: Flooding affected 514 households in Dan Makham Tia, Mueang Kanchanaburi, Sangkhla Buri, Tha Muang, Si Sawat and Bo Phloi districts. The affected area covered 15 subdistricts and 43 villages, with two deaths reported.

Ang Thong: A total of 1,514 households were affected in Pa Mok, Chaiyo, Mueang Ang Thong and Wiset Chai Chan districts, covering 35 subdistricts and 163 villages.

Phra Nakhon Si Ayutthaya: Flooding covered 205 subdistricts and 1,360 villages across all 16 districts, affecting 74,110 households, with one death reported. The affected districts were Sena, Bang Ban, Phak Hai, Phra Nakhon Si Ayutthaya, Bang Pa-in, Bang Pahan, Lat Bua Luang, Uthai, Nakhon Luang, Wang Noi, Tha Ruea, Phachi, Ban Phraek, Maha Rat and the two districts whose names are romanised as Bang Sai.

Samut Prakan: Flooding affected 2,610 households in Bang Sao Thong and Bang Bo districts, covering six subdistricts and 38 villages. Nine deaths had been reported.

Pathum Thani: A total of 2,966 households were affected in Mueang Pathum Thani, Sam Khok and Lam Luk Ka districts. Flooding covered 20 subdistricts and 74 villages, with two deaths reported.

Nakhon Pathom: Flooding affected 19,058 households in Bang Len, Sam Phran and Nakhon Chai Si districts, covering 49 subdistricts and 385 villages.

Ratchaburi: A total of 11,689 households were affected across nine districts: Photharam, Mueang Ratchaburi, Damnoen Saduak, Ban Pong, Wat Phleng, Chom Bueng, Pak Tho, Bang Phae and Suan Phueng. Flooding covered 30 subdistricts and 161 villages, with one death reported.

Samut Songkhram: Flooding affected 15,870 households in Mueang Samut Songkhram, Amphawa and Bang Khonthi districts, covering 33 subdistricts and 255 villages. Two deaths had been reported.

Phetchaburi: Flooding in Kaeng Krachan district affected 23 households across two subdistricts and four villages.

DDPM accelerates recovery and damage assessments

The DDPM is working with local administrative organisations, the military, police and royal volunteers to restore areas where floodwater has receded and conditions have returned to normal.

Recovery teams are using machinery to wash away mud, remove rubbish and debris obstructing waterways, and restore the surroundings of homes and public places, the department said.

Authorities are also accelerating assessments of damage to homes, agricultural land and public infrastructure to support compensation and assistance under Finance Ministry regulations.

Residents affected by flooding or needing emergency assistance can contact the DDPM’s free 1784 hotline, available 24 hours a day, or report incidents through the official LINE account @1784DDPM.