From the historic photos I have seen of other watersheds, especially the Sky as the railroads followed it, the tree cover was a whole lot less 50-100 years ago, at least along the rail lines. I don't at all dispute that the Stilly is unstable and over-logged, as is (for example) Jordan Creek which I have been in a bunch.

But, R/S is a measure of survival from spawner to spawner. It covers everything from intra-gravel survival through FW rearing through smoltification/migratiion, avian predation, pinniped predation, lack of food in the ocean, and so on.

All of the above affect R/S, all of the above are documented to be occurring and generally increasing in negative impact in the North Pacific so I am curious as how we can be so sure that the FW situation is what is controlling the population.

It seems to me, lacking any data so just going pin my prejudices, that assigning FW habitat as the reason gives a free pass to leaving everything else alone.

Hence, my question. Just what Stilly FW salmonid survival data is there?