The 28.5-km-long Douglas County coastal belt (Table 6) is divided into four DCS (Dominant Catenary Sequence) domains and one super domain called the Reedsport Barrier-Beach-Dune-Wetland Super Domain. This super domain is composed of barrier archetypes that are backed by extensive dune archetypes similar to those in Lane County to the north. The 12.5-km-long domain (Domain 6-1) is the longest littoral cell in this super domain.