The 157-km long Colonia Department coastal belt, which lies on the northern shore of the Río de la Plata Estuary, is divided into eight individual Biophysical Cross-shore Classification System (BCCS) domains and two super domains. Red lines separate the individual domain segments that were classified throughout the department. The 68-km long Rosario Super Domain (Beach-Dune-Upland-Developed) is characterized by beach-headland alongshore sequences that are interrupted by a developed headland at Juan Lacaze in Domain 7-2. The cross-shore catenary sequence in this domain reads Dv_ph,shBe_siDuUDv_ag,re, emphasizing developed sub archetypes. Domain 7-6 in the Conchillas Super Domain (Wetland-Upland-Developed) is similar in that the cross-shore concatenation is initialized by developed archetypes in the cross-shore catenary sequence: Dv_phW_foUDv_ag,re. All codifications can be keyed using Table 1, and morphometric analysis of the Colonia Department corresponds directly with Table 7.