Cohoangler,

I think the main reason that the Naselle and all other WB rivers don't produce many native wild Chinook is because, until the last few years, WB has been managed as a hatchery wipe-out fishery, where the spawning escapement of wild salmon was not a management concern. So whatever historic wild Chinook existed were systemactically wiped out by high hatchery harvest rates. Wild escapement has for many decades consisted of hatchery strays that unlikely produced many adult salmon recruits. I think your hunch about the hatchery and high harvest rates are THE factor, not just contributing factors.

Sg