Lake Sammamish salmon closure

I understand why some of the marine areas are closing for chinook this year, but why close lake Sammamish .  I thought those were fish returning to the hatchery? If not why not do a selective fishery ?

The problem is that there are a handful of native chinook that return to Sammamish (and Lake Washington).  Fewer every year.  Most of these season reductions (and eliminations) revolve around reducing the impacts on those fish.  The reason it's not selective is because even though they can't be retained, salmon still die from being hooked and handled.  And there are so few fish they play it safe by closing it.  Literally, we're talking about a few dozen.

The larger issue is, tribal nets kill all of them.