Blackwell Flats is a free, first-come, first-served Army Corps of Engineers campground with 7 widely-spaced sites located on the west side of the Kootenai River approximately 3. 5 miles downstream from Libby Dam.

The campground features a boat ramp with day-use parking, large pull-through sites suitable for RVs up to 24 feet, vault toilets, fire pits, and picnic tables at each site.

Access is via Forest Road 228 (18 miles northeast of Libby on Highway 37), with a 14-day maximum stay and no potable water available on-site.