Good points FF but not sure about large part though. Chehalis is the second largest in the state and in mileage terms overall the area is not that substantial. The warm water bit comes into play in the mainstem in the twin city reach and down stream but not so much above that area in the tribs. That said any substantial rise in temperatures on a fork certainly would not help what exist in the mainstem.

From what I understand the Nation does not support the dam concept. When you consider that one of their senior fish managers still would like to remove the Wynoochee dam I think opposed is where they end up on the subject.