RE: Columbians:- only thing running in the Columbia currently are what are know as spring chinook - mostly Snake and Willamette River fish. A very high quality fish with a rich meat that melts like butter in your mouth. Averaging 10-20lbs, they move into Columbia river and tribs March-May wait around for spawn in Aug-Sep. I am no expert by any strench of the imagination but I do believe any of those fish would be milling around Sooke area.
Next Columbia Run are a summer run of chinook know locally as June Hogs. Most run 20-40lbs with plenty over 30lbs. They run Jun-July and are the reminants of the upper Columbia run killed off by the Grand Coolee dam contruction in 1930-40's. That strain of salmon are reported to have been the source of the 100lb Colombia river fish - again, all forced into extinction by the Grand Coulee dam.
Columbia River dams are a very sore subject at present as they are estimated to kill 80% of the ocean bound smolts every summer....and nobody can figure out why we have a salmon run that is perhaps 5% of their historical numbers.