A suggestion as to how to look at the wilds, especially. Year to year escapement is close to meaningless; you will need to look back to the brood year. For SH, that's (approximately) 4 years ago. For coho, 3. When I looked at wild SH (and this back in the 70s/80s) there were essentially 4 "cycles" just like Fraser sockeye. So, for example, if last year we had 200 escapement that this year it is 100 it looks like a disaster. But, if 5 years ago we had 350 and 4 years ago 75, then this year's return is actually an improvement over brood.