There are really interesting innovations in hydro power ecology in the last many decades. Things like salmon runs, salmon ladders, and salmon cannons. (They ben

There are really interesting innovations in hydro power ecology in the last many decades. Things like salmon runs, salmon ladders, and salmon cannons. (They benefit other freshwater fish, too, we just tend to like salmon the best in our naming scheme bias.) "Devastating" is a bit strong given all the work going into sustainable hydro power and environmentally aware hydro projects.