Thanks CM and Salmo for your thoughts. Some of your thoughts were the same as mine. I am thinking that predation (marine mammals etc.) might be worse on some river systems than others. On the Chehalis system this might be true. The smolts from the tribs (Satsop, Wynooche. Skookunchuck etc.) have to migrate through the Chehalis and Grays harbor to get to the ocean. I know there is quite a large seal and sea lion problem in that system that the smolts (and the adult fish in the fall and winter) have to navigate. I don't know how those predator numbers compare to the other systems however. I would think that there is more tribal netting (for adults of course) in WA than OR. Just some thoughts.