Luangwa River ago, there was no way out and the Luangwa Rift filled with a Rift Valley Lake called the Madumabisa Lake, which rivalled Lake Malawi in size. The water of the lake overflowed in a river to the south-west, towards what is now the Kalahari, where it combined with the Okavango, Upper Zambezi, Cuando and Kafue rivers, emptying into the Limpopo River and flowing to the Indian Ocean. Several geological events combined to produce the current river systems. Faulting produced another graben just to the south of the Luangwa Rift, and running east-west: the Zambezi Rift Valley and the Chicoa Trough.
Zambezi River Authority Zambezi River Authority The Zambezi River Authority (ZRA) is a corporation jointly and equally owned by the governments of Zambia and Zimbabwe. It is a governed by a four-person council consisting of the Ministers of Energy and Finance of each country. Its primary function is to operate and maintain the Kariba Dam on the Zambezi River. The ZRA was established in 1987 as a successor to the Central African Power Corporation, which had formerly managed power generation and transmission from the Kariba Dam. The Zambezi originates in northwestern Zambia, and runs west and then southwest through Angola before reentering Zambia.