According to International Rivers, construction is underway on the Don Sahong Dam in southern Laos. It is being built by Malaysia-based Mega First Corporation Berhad.
The 260-380 megawatt dam site is less than 2 kilometres from the Cambodian border.
"Villagers reported that the dam builders have already blasted a waterfall near the Don Sahong Dam site," said Pianporn Deetes, Thailand campaign coordinator for International Rivers, who visited the site last month.
Lao authorities were not immediately available to comment.//DPA