There are particular concerns that, because salmon spawn through their vents, there could be a collapse in salmon numbers.

Fall-, late-fall-, and winter-run chinook salmon spawn in the river's gravel beds.

Here you can in nice autumn days see the salmon spawn and jump.

Salmon spawn in the lake each year.

Percolating groundwater keeps late fall runs of chum and coho salmon spawning well into winter months, providing food for the birds.