How is Lake Tumba connected to the Congo River basin?

Lake Tumba is connected to the Congo River basin through the Irebu channel. This channel allows the lake to empty into the Congo River, located just opposite the confluence with the Ubangi River. Lake Tumba is one of the most important lakes within the vast Congo River basin, which serves as the country's main drainage system. The Ubangi River, a major tributary of the Congo River, also joins the Congo at the mouth of the Irebu Channel, further integrating Lake Tumba into the larger river system.123