Caribbean Region in the context of Atlántico Department

Sinú River (Spanish: Río Sinú), is a river in northwestern Colombia that flows mostly through the Córdoba Department and into the Caribbean. It is the third most important river in the Caribbean Region, after the Magdalena River and the Cauca River. It is born in the Antioquia Department, flowing south to north for 415 kilometres (258 mi) until flowing into the Caribbean Sea. The river is navigable for only half of its length, 200 kilometres (120 mi) starting in Montería, the largest city in its basin. Also, this river is the main tourist attraction of Montería decorated with the first avenue when it passes by Montería.

The river flows between the eastern and middle prongs of the Cordillera Occidental.

Urabá Antioquia is a region of Colombia's Antioquia Department that consists of two non-contiguous sections, one forming the northwest of the department, the other the west. Both are along the Atrato River. They are separated by the El Carmen del Darién and Riosucio municipalities of Chocó Department, with territories in both municipalities in dispute with Chocó. The region is made up by 11 municipalities. Most of this region's northern portion is part of the Colombian Caribbean Region bordering the Caribbean Sea.