I'd say Atlantic salmon, but am curious as to what the game department will say. I caught an Atlantic in the Fraser River several years ago and puzzled over it a bunch before IDing it. The sparse big spots on the cheek are like Atlantic salmon. It may be an odd color and marking of some other fish of course, but looks like Atlantic to me and does not look like any cutthroat, etc. that I've caught.
Oops: looks like it got ID'ed as a brown trout while I was posting above.