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Damming the Mekong: China, Laos, Cambodia and the fate of Tonle Sap Lake

Published online by Cambridge University Press:  14 March 2025

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Abstract

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After the worst drought in a century on the Mekong, Southeast Asia's largest lake, Tonle Sap, saw a late high-water season that further devastated its ecology. Decades of dambuilding on the Lancang have removed sediment crucial to the health of Tonle Sap and the lack of reliability in the flood pulse is damaging to the region's economy and agriculture. Similarly, flood control dams and large hydropower projects such as the Nam Ou Cascade have put further strain on the most productive freshwater fishery in Asia. In addition to the development of large mainstream dams from the Himalayas to Laos, recent data suggests that China has intentionally held back water resources from downriver countries.

Type
Research Article
Creative Commons
Creative Common License - CCCreative Common License - BYCreative Common License - NCCreative Common License - ND
This is an Open Access article, distributed under the terms of the Creative Commons Attribution-NonCommercial-No Derivatives licence (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is unaltered and is properly cited. The written permission of Cambridge University Press must be obtained for commercial re-use or in order to create a derivative work.
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Copyright © The Authors 2020