Check out the links. I am frankly amazed by them. The core disagreement appears to be whether the salmon should have ladders or be trucked around the dams (no, really, I’m not crazy enough to make that up).
And it really is about returning the Klamath to pre-civilization condition regardless of the effects. Humans will just have to move or die.
Just added reason #1,354 to my list of why I moved out of there.
People moving away and giving up the fight is helping the international activists gain strength.