A majority of planned dams are in the same river basins and will rely on similar patterns of rainfall. Thus, they will be vulnerable at the same time to drought and dry years.
It is an important time to focus on the unintended and unexpected consequences in the natural-human interactions in the food-energy- water nexus
River-borne sediment is trapped behind the world’s large dams, depriving areas downstream of marshes and wetlands, which act as buffers against rising seas.
The China-Pakistan plan to build five dams in a row on the Indus will stop the flow of silt to rejuvenate farms downstream and will reduce water flow too.
The Ethiopia’s Grand Renaissance Dam will bring more power to Ethiopia but is already creating tensions over water rights with Sudan and Egypt.