In the eighties some strange people said that the Dutch rivers needed more space because of climate change. They also wanted to reintroduce beavers and other lost animals. It was called Plan Ooievaar ( Stork ). Then came two years at the end of last century when we might have experienced major and very expensive inundations if the water had risen just one inch more. This was just enough to get parliament to accept Plan Ooievaar. It has now nearly been done but I do wonder if current and following parliaments will be able to handle as wisely.
Beaver's often create their own flooding and undermining, causing river banks to collapse into the river and be carried away! every action, has an equal and opposite reaction!