alt Hacker NewsBuilding dams is not without environmental costs especially in water stressed regions. Grand Ethiopian Renaissance Dam has long been a source of tension between Ethiopia, Sudan and Egypt.
https://www.dw.com/en/gerd-grand-ethiopian-renaissance-dam-s...
Motuo Hydropower Station - will overtake the Three Gorges dam as the world's largest. The project has attracted criticism for its potential impact on millions of Indians and Bangladeshis living downriver, as well as the surrounding environment and local Tibetans.
"a source of tension" is a understatement. might have have caused a war, and still could.