According to Joint Typhoon Warning Center, storm is expected to weaken over next 72 hours and hit Ruyuku Islands.
A statement from Save the Mekong, released last week during a meeting of the Mekong River Commission (MRC) in Vientiane, Laos, claimed that a large portion of the impact assessment was taken from the 2015 Pak Beng assessment.
Embarrassing revelation comes as Mekong countries meet to debate the new project.
As China pushes its Belt and Road Initiative across Asia to strengthen its economic links with new transport routes, the Mekong River faces possible irreversible changes.
The strongest tropical storm of 2018 has petered out after burying dozens in landslides north of Manila and flooding parts of southern China.
The Lower Mekong Basin is home to some 60 million people and has a gross domestic product of about $800 billion, according to official figures.
Climate rallies urge world to dump coal as Pacific warns of environmental disaster.
The ancient, iconic Baobab tree, with its distinctive swollen trunk, grows in many parts of Africa. VOA Khmer's Phy Soopheada narrates.
Honeybees are essential to our food supply. But bees colonies around the world are declining at an alarming rate. VOA Khmer's Chap Chetra narrates.
A report by a Singapore-based consultancy firm does offer some solutions.
On July 23, a saddle dam in the large-scale Xe-Pian Xe-Namnoy hydropower project in southern Laos burst its walls and flooded a vast swath of land in Attapeu province.
Laos is planning to build about 140 hydropower dams but in the wake of the disaster there are increasing calls for a rethink on hydropower.