Can restoring water and sediment fluxes across a mega-dam cascade alleviate a sinking river delta?

Authors: Samuel De Xun Chua, Yuheng Yang, G. Mathias Kondolf, Chantha Oeurng, Ty Sok, Shurong Zhang, Lu Xixi

Published: 2024-05-01

DOI: 10.1126/sciadv.adn9731

Source: Full article


Abstract

Hydropower, although an attractive renewable energy source, can alter the flux of water, sediments, and biota, producing detrimental impacts in downstream regions. The Mekong River illustrates the impacts of large dams and the limitations of conventional dam regulating strategies. Even under the most optimistic sluicing scenario, sediment load at the Mekong Delta could only recover to 62.3 ± 8.2 million tonnes (1 million tonnes = 10