Vietnam faces many risks of sea level rise because of hydroelectric dam
A publication in Science "Rapid changes to global river suspended sediment flux by humans" mentioned Vietnam, one of the countries suffering effects of upstream hydroelectric dams.
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Using satellite images from NASA Landsat and digital hydrological data, researchers at Dartmouth College examined sediment changes in 414 of the world's major rivers between 1984 and 2020. They found that large dams built in the 20th century in the Northern Hemisphere – North America, Europe, and Asia – reduced the amount of sediment transported to the oceans, despite the addition of sediment from Southern Hemisphere – South America, Africa and Oceania. "For lowland countries in the plains, sediments from rivers in the past helped them cope with sea level rise, but now they are," said geography professor Francis Magilligan, co-author of the study suffer from a double sea level rise and sediment depletion. That's the worry of people living in countries like Vietnam, where sediment transport has been significantly reduced due to hydropower activity along the Mekong."
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