The Congo River’s Journey: From Lubumbashi to Matadi

Often called the Zaire River during the Mobutu era, the Congo River is Africa’s second-longest and the world’s deepest river. Its course shapes the Democratic Republic of the Congo’s geography, economy, and daily life.

Source: The river’s ultimate headwaters lie in the highlands of the East African Rift, but the main stem recognized as the Congo begins near Lubumbashi in Haut-Katanga Province, where the Lualaba River adopts the name Congo after Boyoma Falls.

Mouth: It empties into the Atlantic Ocean at Matadi, the DRC’s chief port, where the river’s immense power meets the sea. Between these points, the Congo arcs 4,700 km (2,920 mi) through rainforest, savanna, and the massive Malebo Pool (Stanley Pool), crossing the equator twice.

Along its journey, it sustains millions—providing transport, fish, hydroelectric potential (Inga Dams), and a lifeline for biodiversity including the endangered bonobo. The river’s basin covers 4 million km², second only to the Amazon.

Note: "Zaire River" was the official name 1971–1997; today, "Congo River" is universally used.