Oti (Pendjari)

The Oti River, sometimes known as the Pendjari River, is a West African international river. It begins in Benin, runs through Togo, and eventually joins the Volta River in Ghana. The Oti River is approximately 520 kilometers long. Its source is between Burkina Faso and Benin, and it runs through Benin and Togo before joining the Volta River in Ghana. Togo's left bank tributaries originate in the Togo Mountains to the south. The Kara River is one of its eastern tributaries, with its confluence near the Ghana–Togo border, where another tributary, the Koumongou River, enters from the south. The Oti River used to flow into the Volta River, but now it goes into Ghana's Lake Volta reservoir.

The river runs across the northern section of Togo, cutting through a savannah-clad basin that is 40 to 50 kilometers wide. The gallery forest that runs along with the river's edge floods on a regular basis. The hot, dry Harmattan wind blows from the north throughout the dry season, which lasts from around November to April. The river's flow is very low at this time of year. The floodplains of the Oti and the Koumongou are 10 and 4 kilometers wide, respectively. During the wet season, these flood extensively, but in the dry season, they become dry, dusty plains with the occasional pond or lake in a depression. During the dry season, cattle graze on the floodplains. There is also some small-scale grain production and game hunting.

Length: 323 miles (shared with Benin, Burkina Faso, and Togo)