Right next door to Enchanted Forest. The swimming pool is one of the nicest I have seen. I had great Wi-fi access, and the registration booth was manned every time we came through. They didn't even charge for extra cars, which I have encountered at every other KOA I've stayed at.
This is a smaller park that has become our preferred campground when meeting family from Eastern Oregon. It's a great halfway point for us. Columbia River is nearby, though it's not an easy hike down there. Didn't notice as much noise from the trains this year, compared to past trips.