cncfish -
From my understanding of the HSRG recommendations there probably are enough wild coho included in the brood (generally the recommendation is for approximately the same portion of wild fish in the hatchery brood stock as hatchery fish spawning in the wild). For a well integrated brood stock one wants the hatchery fish similar to the wild population. As we saw at least in terms of spawn timing that is not the case for the Wallace brood stock.

Not sure that in itself is a large issue for the Wallace program. The ability to collect the returning adults at the rack helps to limit the potential hatchery/wild impacts. However why the program is expanded to areas like Eagle Creek where more of the uncaught returning hatchery may spawn in the wild the concerns can develop. The larger or more wide spread those types of programs the higher the concern.

Remember the Snohomish consistently sees wild coho escapements in the 100,000 fish range ( modern day record was in 2001 when more than 1/4 wild coho spawned in the basin). Such a robust wild run can support harvest levels in the 30,000 to 60,000 range (substantially more if periods of above average marine survivals.

Curt