Game and Fish Department's web site lists 57 access areas, many allow primitive camping. These developed areas are funded in part by sportsman license purchase, but you can enjoy many of them for free unless you want to engage in activities that require a license.
Here are just the first two listings...
- Sundheim Park - 2 miles west of Cartwright on ND Highway 200, west side of Yellowstone River and on he south side of ND Highway 200. (No courtesy docks, paved access road, primitive camping, security lights, picnic shelter - McKenzie County Park Board).
- Confluence Area - 1 1/2 miles souh of Buford on ND Highway 1804. (Paved access road, primitive camping, security lights, picnic shelter, trash receptacles - Williams County WRD)
Not everyone will enjoy these boat launch areas as an RV camping location, but travelers may think these are perfect overnight locations off the beaten path. There are more free camping ideas available at North Dakota Camping Resources. Links to Wildlife Management Areas, federal and state parks, grasslands and more.