
The volume of usable water in Khon Kaen's Ubolratana Dam has dropped by 11% due to the insufficient number of wastewater treatment plants that could process runoff discharged by the agriculture and industrial sectors in the region, according to the Office of National Water Resources (ONWR).
Surasri Kidtimonton, ONWR secretary-general, said officials are still working on the inundation and drought mitigation plan for the Chi River basin area, which covers about 12.85 million rai of land in Kalasin, Khon Kaen, Maha Sarakham, Mukdahan, Yasothon, Roi Et and Udon Thani.