I would also look back to the specific brood years. What was the behavior of the coho then? That would be the easiest one as most coho will be age-3 so from the '22 brood. I know that while nothing down here seems as cyclic as Fraser sockeye stocks, the old "what survives is what spawns" works together with Darwin so they should behave similar. That is, unless the streamflows are really crazy like high flows one fall and low ones the next.

The managers should have this at their fingertips.