evidence: Congo River, or Zaire River, River, west-central Africa. Rising in Zambia as the Chambeshi and flowing 2,900 mi (4,700 km) through the Democratic Republic of the Congo to the Atlantic Ocean, it is the second longest river in Africa. It flows through three contrasting regions: the upper Congo, characterized by lakes, waterfalls, and rapids; the middle Congo, with seven cataracts known as Boyoma (Stanley) Falls; and the lower Congo, which divides into two branches forming a vast lake area called the Malebo (Stanley) Pool. Congo River summary verifiedCite [...] Kinshasa, largest city and capital of the Democratic Republic of the Congo. It lies about 320 miles (515 km) from the Atlantic Ocean on the south bank of the Congo River. One of the largest cities of sub-Saharan Africa, it is a special political unit equivalent to a Congolese region, with its own river Summary