Chenal

The Chenal, also known as the Couloir, is a narrow section of the Congo River in west-central Africa. This part of the river flows rapidly through a deep valley, with banks typically between half a mile and a mile wide. It is here that the Congo River receives its main tributaries, including the Ubangi and Sangha rivers on its right bank, and the Kwa River on its left bank. This section marks the end of the middle course of the Congo River before it enters the Malebo Pool. The Congo River is Africa's second-longest river and forms the continent's largest network of navigable waterways, despite 32 cataracts limiting navigation in its lower course.12