The lack of water in the winter kills off aquatic insects and vegetation — the base of the river ecosystem’s food cycle.

Underwater meadows of tapegrass — along with the white sand and shell bottom — were now overgrown with a flowing ... constant water temperatures that the springs provide. The dam was ...

The new dam will mean the river flows year-round Dams also regulate the flow of the river. At the moment the difference between high water and low water level in Sudan is 8m, and that makes its ...