Lake Volta
Lake Volta's area is about . It holds about  of water. The Black Volta, White Volta, and Oti Rivers flow into the lake. The whole lake is a reservoir along the Volta River. When the water level is lower, the northern parts become more like a river and less like a lake. The area of the lake shrinks and it becomes narrower. The water level is the highest in August to September, and the lowest in May to July.