Potlatch is a small State Park in the Olympic National Forest system. It’s located near Shelton. There are 37 campsites, of which 18 are utility (30/50) sites, 17 are tent sites, and 2 are for bikers/hikers. Potlatch State Park does not take reservations, it’s first come, first serve campground.
It was August, mid-week (Wednesday), and I arrived around 11:00 AM. The campground was half-full, with only a few utility spots available. By Thursday, it was full (and kind of noisy!). The camping spaces are “crammed” together. There are lots of trees for good shade, but you can still look out your window and wave to your neighboring camper. Some of the utility slots are back-in, and some are “half-circles” (try “bending” your RV around that slot!). If your RV is larger than 30 feet, you may not fit in any of the utility spaces, let alone trying to get into them! The road through the camping area is narrow and runs up and down hill in a circle with sharp curves. I had a back-in spot, but trying to back in was laborious. Fortunately, a very nice young boy from the neighboring camping spot offered to help me get in.
The utility sites have an adequate place to pitch a tent next to your RV, and a fire-pit and picnic table. TV reception via antenna is adequate, not perfect, but adequate. There are hiking trails, and there is a beach across the highway. Next door to the park is a public RV resort with a laundromat, but I’m not sure if you’re “allowed” to use the laundromat if you are staying at the State Park.
I stayed two nights. If you leave your windows open while sleeping, you will hear the traffic on US Highway 101, even at 3:00 AM!