Ron bob, lets take a little more long term view and look at the continuing declines in hachery success it is constantly going down and if many of the folks who have been around awhile are right so is the diversity of the wild gene pool. The reasons for this are myriad but if you really want to gain insight and acquire more than web site info please take the time to read Salmon Without Rivers A history of the Pacific Salmon Crisis by Jim Lichatowich. I have for over 50 years been watching what Jim so eloquently describes and reports on in this book and find nothing in this book that is bogus or self serving, be warned you will probably at times while reading have sudden burst of racial hatred to European Caucasians but that will pass in time.