Fig. (14a) Limpopo Basin with the Limpopo River and other inflow rivers. Infestation of Eichhornia crassipes from ‘Start Point’ in Marico River and up to ‘Zanzibar Filter’ on Limpopo River. The infestation of E. crassipes is divided into two major sections from 1 (Start Point = Olifants Drift) to Martins Drift (26) and from Martins Drift to Zanzibar Filter (46). The 1st section has 23 weirs/dams and the 2nd section has 20 weirs/dams.