What carcassman said applies to the entire lower Columbia ESU for both chinook and coho, not just the Cowlitz. Basically all of those populations were written off, overharvested, and replaced by hatchery fish, mostly originating from the Cowlitz River. Nonetheless they are listed. Same goes for Puget Sound Chinook, where all of Hood Canal and south Sound (Green River south) were written off. They were still listed, moreover, two Hood Canal populations as well as the Nisqually population are now considered essential for recovery. Like I said, it will be interesting to see where this goes.