Zambia and south covering about three-quarters of the country; and the Congo basin in the north covering about one-quarter of the country. A very small area in the northeast forms part of the internal drainage basin of Lake Rukwa in Tanzania. In the Zambezi basin, there are a number of major rivers flowing wholly or partially through Zambia: the Kabompo, Lungwebungu, Kafue, Luangwa, and the Zambezi itself, which flows through the country in the west and then forms its southern border with Namibia, Botswana and Zimbabwe. Its source is in Zambia but it diverts into Angola, and a number of its
Luena River, Zambia km wide at its mouth. In the dry season, vehicle tracks cross the Luena/Ndandu floodplain between north and south, allowing a direct route between Mongu and Lukulu and North-Western Province, Zambia. In the wet season the floodplain is impassable and vehicles have to travel west towards Kaoma, then north-west on the Kaoma-Lukulu road. At the height of the flood this road also becomes impassable across the floodplain, and there is no practical alternative. Luena River, Zambia The Luena River of Zambia's Western Province rises just west of the Kafue National Park and flows west through Kaoma to become a tributary