1 result for Sand mining
There are many ways to kill a river. With Southeast Asia's Mekong, China's upriver damming is taking a heavy toll, but downstream neighbors share the blame. The No. 1 threat: sand mining.
https://www.npr.org/2020/02/17/806729347/sand-mining-in-cambodia-and-dams-upstream-threaten-mekong-river