There has been a lawsuit filed to stop the Elwha River hatchery. Since this quite a hot topic, I will go the unbiased route and allow you to read the article and watch the video involving the lawsuit and an article from the Times that allows for both sides to voice opinions.
There is evidence that if left alone the wild fish would rebuild themselves (as seen on the Sandy River in Oregon). Anyway. Here ya go.
First the information on the lawsuit:
Wild Fish Conservancy Files Suit
An article from the Seattle Times that gives both sides a voice:
Elwha River Hatchery Proposal
The dam removal was only the first step. If you wish to support the groups behind the lawsuit there is information how in the press release.
Feed Fish Flies, Not Plastic.