3 ms·

You have to have something to keep the water contained between the two.

• bryanlarsen 3mo ago
  But those aren't dams. Dams are something that stops the flow of water. And it's this stoppage that causes the environmental problems. Reservoir walls might look like dams, but they're not dams.
  • bluGill 3mo ago
    Pedantically you are correct. However you are completely missing the point.
  • crote 3mo ago
    The main enviromental complaint is in flooding huge areas of land, which is the case with both dams and reservoir walls.