Thailand – Floods in Ayutthaya and Nakhon Phanom

Flooding has affected several provinces in Thailand over the last few days, damaging homes and crops. Disaster management authorities in the country have issued warnings for further heavy rain for the next 4 days.

ASEAN Coordinating Centre for Humanitarian Assistance on Disaster Management (AHA Centre) report that the provinces of Ayutthaya and Nakhon Phanom have suffered flooding over the last few days. Quoting figures from the local Disaster Prevention and Mitigation office in Ayutthaya, AHA Centre reports that flooding has inundated 9,940 houses in six districts.

In a statement on 23 July, Department of Disaster Prevention and Mitigation (DDPM) Director-General Chatchai Promlert said that 23 provinces have suffered flash flooding during July. He added that flooding persists in the provinces of Phichit, Chiang Rai and Lampang, as well as Ayutthaya.

In Nakhon Phanom Province flooding from the Mekong river has affected low land areas especially in southern parts of the province, including That Phanom district and Na Kae district. Floods have damaged almost 1,000 rais (around 160 hectares) of farmland.

Nakhon Phanom Governor Somchai Witdamrong said that continuous downpours have caused the water level in Mekong river to increase. As of 23 July it had reached about 9.3 meters.  Governor Somchai Witdamrong said that the “critical point” is 13 meters.


The Department of Disaster Prevention and Mitigation (DDPM) has warned of heavy rainfall across the country from 24 to 28 July, which could lead to flash floods and mudslides.

The Meteorological Department said that a tropical storm in the upper South China Sea will move upwards to northern Vietnam on 25 July and cover the northern and northeastern regions of Thailand.

Heavy rainfall is therefore expected from 24 July, especially in the northern, northeastern, and eastern regions. Bangkok and its vicinity will experience rainfall from 26 July.

Recent Rainfall

Figures for a 24 hour period according to Thai Meteorological Department.

22 July

  • Chiang Rai – 81.7mm

21 July

  • Lampang Agromet – 71.2mm
  • Loei – 70.7mm
  • Nong Bua Lam Phu – 94.4mm

20 July

  • Nong Khai – 116.4mm

19 July

  • Chon Buri – 101.3mm

Flood Summary

Last updated: August 2, 2017
Thailand, July 2017
July 19, 2017
Flash flood, River flood
Long-term rainfall
Flooding affected parts of Ayutthaya province in central Thailand, damaging thousands of homes. Meanwhile some northern areas of Thailand experienced heavy rain from 18 to 22 July, increasing levels of the Mekong River in Nakhon Phanom province. Since then, an active low pressure area following tropical cyclone Sonca brought further heavy rain from 26 to 29 July, 2017. The provinces of Sakon Nakhon, Roi Et and Mukdahan were among the worst hit.


A - Ayutthaya
B - That Phanom
C - Na Kae
D - Sakon Nakhon
E - Mukdahan
F - Roi Et


River level
9.3 metres
Mekong River, Nakhon Phanom - July 22 to July 23, 2017
Critical / danger level is 13 metres
Rainfall level
81.7 mm in 24 hours
Chiang Rai - July 21 to July 22, 2017
Rainfall level
71.2 mm in 24 hours
Lampang Agromet - July 20 to July 21, 2017
Rainfall level
70.7 mm in 24 hours
Loei - July 20 to July 21, 2017
Rainfall level
94.4 mm in 24 hours
Nong Bua Lam Phu - July 20 to July 21, 2017
Rainfall level
116.4 mm in 24 hours
Nong Khai - July 19 to July 20, 2017
Rainfall level
101.3 mm in 24 hours
Chon Buri - July 18 to July 19, 2017


Homes damaged
Ayutthaya province - July 18 to July 22, 2017
15 people
July 26 to August 2, 2017
9 in Sakon Nakhon, 4 in Roi Et and 2 in Mukdahan.
July 26 to August 2, 2017
Sakon Nakhon, Roi Et, Yasothon, Kalasin, Nakhon Ratchasima, Nakhon Phanom, Mukdahan, Ayutthaya, Amnat Charoen and Ubon Ratchathani.