Ubangi River

The Ubangi River,  pronounced “Oubangui,” is the broadest right-bank tributary of the Congo River in Central Africa. It originates at the confluence of the Mbomou and Uele Rivers, flowing westward and delineating the border between the Democratic Republic of Congo and the Central African Republic.

This river typically flows southwestward, draining through Bangui, the capital of the Central African Republic, before altering its course to flow south, so delineating the border between the Republic of Congo and the Democratic Republic of the Congo, ultimately converging with the Congo River near Liranga. The River traverses a dense equatorial rainforest, meandering past river islands, cascading over rapids and waterfalls, before ultimately discharging into the Congo River.

The River measures around 1,060 kilometers (660 miles) in length; but, when including the River Uele, its longest tributary, the total length extends to 2,270 kilometers (1,410 miles). The drainage area of the river basin encompasses approximately 772,800 square kilometers (298,400 square miles), while its discharge at Bangui fluctuates between approximately 800 cubic meters per second and 11,000 cubic meters per second, with an average flow exceeding 4,000 cubic meters per second; the mean discharge at Bangui is roughly 4,280 cubic meters per second (151,147 cubic feet per second). During floods from May to December, the flow occasionally surpasses 14,000 cubic meters (494,000 cubic feet), whereas in the reduced water period from February to April, it diminishes to 1,000 cubic meters (35,300 cubic feet) per second or lower, as previously noted.

The Ubangi River is created by the confluence of the Bomu and Uele Rivers near Yakoma in the Democratic Republic of Congo, bordering the Central African Republic, and runs westward for around 560 kilometers (350 miles). In addition to serving as the headwater for the Congo River, it has two primary tributaries: the Kasai and the Uele, the latter of which is the longest, hence the designation River Ubangi-Uele.

The Ubangi River, in conjunction with the Congo River, provides a crucial transportation route for riverboats between Bangui and Brazzaville. The river originates and flows approximately 100 kilometers (62 miles) downstream from Bangui, draining along the border of the Democratic Republic of Congo and the Central African Republic, subsequently delineating the boundary between the Republic of Congo and the DRC before ultimately discharging into the Congo River. The confluence of the Ubangi-Uele and Congo Rivers is located near Lake Tumba in the Democratic Republic of the Congo.

In its upper reaches, the Ubangi River bifurcates into channels separated by lush, elongated islands, while in other areas, rocky formations constrict the flow, resulting in rapids similar to those at Bangui. Upon reaching the Congo Basin, this river undergoes transformation as its extensive flow is partitioned by sandy shoals. Consequently, many headwaters remain obstructed by rapids, while other regions consist of flat marsh lowlands and low divides sloping east and southeast from the western hills toward the Congo River.

In conclusion, in addition to remarkable primates like mountain gorillas, eastern lowland gorillas, bonobos, and Lesula, the Democratic Republic of Congo also encompasses extensive tropical rainforests and various rivers, notably the Ubangi River, a primary tributary of the Congo River.