Here is a link to a preliminary report presented to the WDFW Commission in Aug 2015 on smolt loss research with heavy emphasis on South Sound:

http://wdfw.wa.gov/commission/meetings/2015/08/aug0715_06_presentation.pdf.

It is particularly interesting to look at the Nisqually results given its relative lack of development compared to the northern river systems.

And then there are the predation issues which the Times article does not mention.

And here is a link to a current news report on a Squaxin Island tribe's study on coho survival: http://www.king5.com/story/tech/science/...fish/80828824/.

Seems their effort is directed more at exploring whether moving their coho release point further north will improve survival and returns.
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Remember to immediately record your catch or you may become the catch!

It's the person who has done nothing who is sure nothing can be done. (Ewing)