Rustic riverside campground
This year-round campground is a short walk from the road and situated along the river, providing nice swimming/wading when the weather is right. There's a small parking lot with space for several cars. Site are $15/night (2020) and a recycling toilet is available. This is bear country, so bear boxes are provided. You will cross train tracks to reach the campground and they are active tracks, so you'll hear trains.
The river has an area with a sandy bottom and some rocks; the number of rocks you walk over will depend on the season and water levels. Bring your own water or something to filter/treat it. Sites are good-sized for a tent or two with tent pads laid out on some. There's a fire ring, but don't count on a grate. No picnic table. Site 2 is large, but you walk through it to reach site 1.