The dam thing is interesting. Our Indians, for instance, want them all gone. When they were building the dams they had little interest in anything but agriculture and electricity and they did/do the job in that regard. Now, as far as electricity is concerned there are a number of choices. On the other hand there are a lot of people who need the dams, as they are, to survive. I think the thing that bothers me the most is taking out dams to save salmon. That does save the salmon but only to support the breeding of sea lions which are protected (they did give one tribe the right to kill them but, not too many of them).

There are communities that sea lions have virtually taken over. Astoria, Ore is one of those. For years commercial fishermen would kill any sea lion they saw (they are salmon eating machines). That never put the sea lions in danger just regulated the number of them.