There really isn't much "pure" Chinook and coho left. But, as you said Larry, if one believes in natural selection then what is there can adapt is actually given a chance.

I believe that if you let those 10K Kalama fish upstream to spawn for each of the next 4 years, then the ocean and river was managed for a minimum 10K escapement for 20 years then you would have a fairly well adapted Chinook stock. It would be wild, it would be adapting to the Kalama, and it would be better tan we have now.