We camped here over the 4th of July weekend, a very busy time (and BIG party) in Mandan. The state park system screwed up our reservations, which we had made months before - but managed to get us into a non-electric site for a couple of nights, after which we moved to a site with electric (30 amp) and water nearby. This is a nicely shaded, historical park right on the Heart River, where it joins the Missouri River. No swimming is allowed in the river, which would be dicey in any case. Riverfront sites are non-electric only. There is a nice playground for kids, and a volley ball court. Watch out for the poison ivy! Away from the river there is a fascinating historical site, including the calvary fort (from where General Custer and his troops rode to their doom) and an amazing cemetery, plus the Mandan Indian 'slant' village. Great walking and biking trails. We had stayed here the previous May, and had the place entirely to ourselves - with no water or electric; they were shut down till 'spring', whenever that is! There was still a little snow on the ground, but even without any services we were charged to dry camp. We would definitely stay here again. We camped here in a Motorhome.