Popular, but Peaceful
We stayed at this campsite for one night on our way down to Mount Rushmore, it was a Thursday night early September. We picked a site near the back of the camp grounds located near the creek and close to a small parking lot (close by to the pet exercise area on the map - though it's labelled as an ice rink on grounds). From this site, we were close to the bathrooms (which had both toilet stalls and shower stalls) and drinking water. The campground is quite large, with a lot of space for RVs and tent-campers as well. As a primitive camper, we were located quite close to other campers but everyone was respectful and we slept peacefully through the night. Each primitive campsite had a nearby picnic table, that was great for meal times. Being next to the creek was additionally peaceful, as we could hear the water through the night (which I enjoyed, though other sites are far enough away that you don't have to hear the water if you wouldn't want to).
The camp grounds is located close to the DC Booth Hatchery which is an interesting piece of the local history, and provided us with the opportunity to see some Rainbow Trout.
On the way out of the campgrounds, we were presented with an incredible opportunity to see a large bird of prey making off with a large Trout in its talons.
Great for family camping, or for a place to stop for a few nights but not what you're looking for if you're hoping to be out in the back woods.