New power plants blamed for turning Mekong River blue – The Times

PHNOM PENH – With horror images showing fields of plastic rubbish bobbing on turquoise seas around the world, one could be forgiven for welcoming the sight of one of the world’s great rivers turning a fresh blue. However the azure hue seen in recent weeks along stretches of the Mekong is stirring concerns that dozens of hydroelectric dams, the biggest of which are in China, are interrupting the river’s natural flow and blocking sediment that should be carried to farmland downriver that helps feed 60 million people. Earlier this month the Mekong River Commission, a regional intergovernmental body, put the colour change down to “extremely low flow, slow drop in the river sediments,” after warning last month that the Mekong region could face serious drought over the turn of the year.