Dan River Navigation System in North Carolina Thematic Resources  Dan River Navigation System in North Carolina Thematic Resources includes a set of historic wing dams, sluices, and hauling walls located near Eden, Madison, and Wentworth, Rockingham County, North Carolina. They were built between about 1823 and 1890 to improve navigation on the Dan River. The 11 components of the thematic resources listing were added on the National Register of Historic Places in 1984. They are: