Getting fish ladders to work where they exist, or built where they are lacking, is not an easy feat either.

And the dam removals in Spain have nothing to do with receiving 770 mm of water in one single day. None of the removed dams would have protected an area that was planned to get flooded when the works of the 1960s were done.

https://www.reuters.com/fact-check/map-shows-existing-river-...