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ONWR halts Vajiralongkorn Dam releases as heavy rain nears
ONWR halts Vajiralongkorn Dam releases as heavy rain nears
MONDAY, SEPTEMBER 28, 2026
ONWR halts releases from Vajiralongkorn Dam for two days and warns seven northern and western provinces of heavy rain on September 28–29.Nakhon Nayok records 274mm of rain as flood warning continues
Nakhon Nayok records 274mm of rain as flood warning continues
SUNDAY, SEPTEMBER 27, 2026
Thailand’s ONWR warns of flash floods, run-off and landslides through September 30 after Nakhon Nayok recorded the highest regional rainfall at 274mm.Water situation updated as agency warns 8 eastern provinces of floods
Water situation updated as agency warns 8 eastern provinces of floods
FRIDAY, SEPTEMBER 25, 2026
Sa Kaeo recorded Thailand’s highest reported rainfall at 211mm, while eight eastern provinces remain under close flood watch until September 27Thailand’s reservoirs 72% full as 6 provinces face flood risk until September 21
Thailand’s reservoirs 72% full as 6 provinces face flood risk until September 21
MONDAY, SEPTEMBER 21, 2026
Thailand’s reservoirs were 72% full on September 20, as forecasts warned of over 200mm of rain across three days in parts of six provincesONWR warns 28 provinces in five regions of floods on September 15–19
ONWR warns 28 provinces in five regions of floods on September 15–19
TUESDAY, SEPTEMBER 15, 2026
Thailand’s water agency urges checks on small and medium reservoirs above 80% capacity in 14 provinces during September 15–19, 2026.DDPM issues Phetchabun flood alert after Pa Sak reaches 7.67m on September 15
DDPM issues Phetchabun flood alert after Pa Sak reaches 7.67m on September 15
TUESDAY, SEPTEMBER 15, 2026
Thailand’s disaster agency urges riverside residents in Tat Kloi, Phetchabun, to move belongings, vehicles and vulnerable people to safety immediatelyThailand strengthens Mekong data links for faster cross-border flood warnings
Thailand strengthens Mekong data links for faster cross-border flood warnings
SATURDAY, AUGUST 29, 2026
Thailand’s ONWR is linking data from 79 stations and 13 dams across the Mekong basin to improve forecasts, warnings and cross-border water management.Nan braces for more heavy rain with saturated soil increasing flood risk
Nan braces for more heavy rain with saturated soil increasing flood risk
FRIDAY, AUGUST 21, 2026
Heavy rain is expected to return to Nan on August 23, with saturated soil raising the risk of renewed run-off despite falling river levels.Thailand issues heavy rain and flash flood warnings through August 21
Thailand issues heavy rain and flash flood warnings through August 21
SATURDAY, AUGUST 15, 2026
Authorities warn of flash floods, landslides and low-lying flooding from August 15-21, with more than 200mm of rain forecast in parts of Tak.