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Britannica Sources used in this answer

How long is the Congo River estuary?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
Physical map of the Congo River basin and its drainage network in Central Africa, showing rivers, major tributaries, elevation gradients, cities, international boundaries, and the approximate boundary of the Ituri Forest. Swamps and flood-prone areas are marked in blue, with symbols indicating waterfalls, rapids, and dams. An inset locator map shows the basin's position within Africa.
Congo River

The Congo River estuary is 83 miles (134 km) in length. It begins at Matadi, downstream from the rapids that separate the interior river from the coast, and forms the border between Angola and the Democratic Republic of the Congo.1