Hydrology
The Shashe River is a highly ephemeral river, with flow generally restricted to a few days of the year. The river contributes 12.2% of the mean annual runoff of the Limpopo Basin.
Major tributaries of the Shashe River include the Simukwe, Shashani, Thuli, Tati and Ramokgwebana rivers. The lower Shashe is a sand filled channel, with extensive alluvial aquifers in the river channel and below the alluvial plains. These supply water for a number of irrigation schemes including Sibasa and Shashi.
More than two million years ago, the Upper Zambezi River used to flow south through what is now the Makgadikgadi Pan (presently a vast seasonal wetland) to the Shashe River and thence the Limpopo River.
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