Heading South from Seattle, hop on I-5 and drive to woodland. Take the 2nd Woodland exit. Drive down to the light and take a left under the freeway. You can either continue up this road all the way up to and past the hatchery, or you can take a hard right and follow that road all the way up to the other side of the hatchery.

Most of the springers will be up at the Hatchery, or if not, down in deeper holes only accessible by boat.

Same for the summer runs, although they tend to be more spread out in the river system.

If you want to fish for springers, I'd bring a long rod, some floats, and some good eggs, and fish up by the hatchery.

Not too sure I'd waste my time on the bank for summer runs up there yet.

Personally, I'd tell you to go explore the Kalama. There are fish in the Kalama, and not nearly as many fisherman. Way more friendlier bank access (or so I've been told).

Oh wait, now that I've just posted this, the Kalama will be packed to the gunnels with people.