There are a few in Portland OR area that target the Walleye.
In June fishing picks up in the lower Columbia near Portland. It gets better as summer goes along.

Where you thinking of fishing lower river or Tri cities? I can send you names but your area is helpful

Both WA and OR have now declared the walleye an invasive species and removed limits/seasons in Columbia. It’s really too bad. This could be a good fishery if the states managed them.