The Cuvelai-Etosha Basin is a transboundary wetland area shared by Angola and Namibia extending over 450 kilometres from north to south.
[1] The basin consists of hundreds of drainage channels, known as iishana (singular oshana), that flow from north to south from the southern Angolan highlands to Namibia's Etosha pan.
Many of these channels are dry for most of the year but are prone to major flooding during the rainy season due to the terrain being extremely flat.
[3] Located in the north-central part of Namibia, this drainage basin stretches across four regions, namely Ohangwena, Omusati, Oshana and Oshikoto.
[1] There is an estimated 1.2 million people that live in the basin with about 70% in Namibia and 30% in Angola.