Abstract

The rate of bank erosion by the Zambezi River downstream of Lake Kariba is discussed. Probable reasons for the apparently excessive rate of erosion in parts of the bank are the out-of-season flooding, sudden changes in water level due to operations at Lake Kariba, the silt-free water leaving Lake Kariba and the occurrence of large areas of sandy alluvial soils. Over a distance of about 40 km, about 1030 ha were lost to erosion between 1954 and 1973, whilst 210 ha were redeposited in the form of semi-permanent sandbanks.

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