I'm not too sure how many people would find themselves in Beulah (we were there because my father-in-law worked in the area for a bit), so I was surprised the see there was a park for camping. There's not a ton to do, which is one of the reasons for 3 starts, but the park is along the Knife River and the park is small but nice. It does feel like a bit of an oasis in the pretty much vast nothingness. It's not too far from Bismarck so it might be a nice getaway. The town is very small but for some reason there is a golf course right next to the park, so that could be a draw.
This felt like a local park. They do have shelters and electrical camping. I did not camp here but did walk around. I believe you do need a permit to camp here