Zambezi the overflow of the Zambezi in the rainy season. The delta of the Zambezi is today about half as broad as it was before the construction of the Kariba and Cahora Bassa dams controlled the seasonal variations in the flow rate of the river. Before the dams were built seasonal flooding of the Zambezi had quite a different impact on the ecosystems of the delta from today as it brought nutritious fresh water down to the Indian Ocean coastal wetlands. The lower Zambezi experienced a small flood surge early in the dry season as rain in the Gwembe catchment and
Serorome River Serorome River The Serorome River is a river in the Central District of Botswana, a tributary of the Limpopo River. At one time the western Kalahari Region was a large, shallow inland lake, draining into the Limpopo through the Serorome Valley. Later geological upheavals re-oriented the rivers in the region to mainly flow northeast into the Zambezi. The Serorome valley is the exception, still leading to the Limpopo via a rift fault. Today the river flows through relatively flat, semi-arid country with savannah grasslands, shrubs and trees. The river flows occasionally in the rainy season, which lasts from November to