I don't know of any captive rearing projects in the northwest. That doesn't mean there aren't any just means I don't know of them.
What is becoming popular however is a wild brood stock. That is taking only wild fish to generate stock for the hatchery. This is very popular among anglers because they provide much better sport than stocks that have been domesticated for years or even decades.
The most notable such hatchery program is the snyder creek project on the Sol Duc. I am sure a search of the archives will give you a lot of info on that project,
Also such projects exsist on the North Umpqua, Wilson and i believe the Nestucca in Oregon ( i am sure there are others).

These projects are great in so much as their ability to create good fisheries. However there is no evidence that they are better ecologically than any other hatchery program. This topic is being studied thoughtfully by the Kalama research team and I look forward to seeing the results of their study in 2008.