Why not target a few rivers where you be fishing first and then check the regs.
Make sure the part of the river is open and you are using the right gear.(barbless)
For example if you are fishing river ABC. from the mouth to the Railroad and it says its open from april to june for salmon then it is leagal to do so unless it mentions a species of salmon you can noy harvest in the special or additional rules section on the right siade of the river.
If you are confused in reading the pamphlet(like the rest of us here) call the fish and game before you go out on a outing.