If the fish could go upriver in 285 cfs why is it they can't go down under the same flow?
I understand some fish will be stranded in back channals but not the majority.
Warm water will have them leaving sooner than later but even as stressed as they are after spawning they can just let go and drift with the current like a foul hooked king.
As always most the males will hang out to long to make it, but they always do.
Studies on the west coast have shown that 90%+ of return spawners are females.
http://www.youtube.com/watch?feature=player_detailpage&v=B8m5p6V_NPQ