evidence: The Congo River Basin, covering an area of 1,335,000 square miles (3,457,000 square km), occupies almost the entire territory of the African country as well as most of the countries that make up the Republics of Africa. (see article: Rio Salado). [...] The estuary of the Congo begins in Matadi, downstream of the rapids that close the interior of the Congo. The length of the Congo River is 134 miles (134 km) and it forms the border between Angola and the Democratic Republic of the Congo. (see article: Loire River). [...] In which continent is the Congo River found? The Congo is an important navigation system in Africa. Only within the territorial limits of the Democratic Republic of the Congo, there are some 8,700 miles (14,000 km) of waterways.