Dams unplugged as ‘Sonca’ threatens heavy rains 

There is a possibility of flooding in Ang Thong and Ayutthaya.
Department deputy chief Thongplew Kongjan said the major and mid-scale dams as of Monday held 44,394 million cubic metres of water – about 59 per cent of their combined capacity.
That volume was 10,229 cubic metres more than they held at the same time last year, he said. 
Eleven dams at high levels will release substantial amounts of water – Lampang’s Kiew Lom and Kiew Khor Ma, Phitsanulok’s Kwai Noi Bymrungdan, Sakhon Nakhon’s Nam Un and Nam Pung, Khon Kaen’s Ubolrat, Nakhon Ratchasima’s Lam Phra Phloeng, Ubol Ratchathani’s Sirindhorn, Lop Buri’s Pasak Jolasid, Uthai Thani’s Thab Salao and Suphan Buri’s Kra Sieo. 
Suchat Charoensri, director of the 12th Royal Irrigation Office in Chai Nat, said the Chao Phraya Dam in that province is expected to receive a large volume of mountain runoff next week, so it will release comparatively more water. 
Downstream rivers and canals will rise as a result by 15-25cm and flooding could occur in low-laying riverside areas in Ang Thong and Ayutthaya, he warned.
The Thai Meteorological Department on Wednesday morning downgraded tropical depression Sonca to an active low-pressure area as it moves over the Thai Northeast, lower North and upper Central region. 
It is expected to dissipate by Friday, but rainfall is likely to be widespread, with “heavy” and “very heavy” downpours in some isolated areas. 
Citizens are advised to beware of severe weather triggering flash floods.