Kipling’s greasy river still arcs 1,750 kilometres to the Indian Ocean
The Limpopo rises in South Africa and runs about 1,750 kilometres to Mozambique’s coast, draining some 415,000 square kilometres. For roughly 640 kilometres it borders Botswana and Zimbabwe before turning through Kruger country toward Xai-Xai.
Vasco da Gama anchored at the mouth in 1498 and called it Rio do Espírito Santo; Erskine and Elton mapped lower and middle reaches in 1868–70. People lived here long before that: fossils of Australopithecus some 3.5 million years old lie in the Makapans Valley near Mokopane. Mean discharge swings between about 170 and 313 cubic metres per second. The Olifants contributes around 1,233 million cubic metres yearly; the Notwane arrives from Kalahari edges. Downstream of that junction, boats can reach the ocean, yet a coastal sandbar keeps big hulls waiting for high tide.
Geologically the upper Zambezi once fed the Limpopo until Late Pliocene or Pleistocene uplift rearranged divides. Today the channel swings north, northeast, east, then southeast—sluggish and silt-rich, matching Rudyard Kipling’s “great grey-green, greasy” fever-tree corridor in the Just So Stories where a bi-coloured python rock-snake supposedly dwells. Rain is fickle: in dry years the upper river flows for 40 days or fewer, and the arid Kalahari headwaters give way to the thinly settled semi-deciduous forest of the Waterberg Massif and then fertile lowlands, so that about 14 million people now live in the basin. Local Venda communities call it the Vhembe, a name South Africa has given to its northern district municipality. It is the second-biggest African river draining to the Indian Ocean after the Zambezi.
Hippos gather most densely on the stretch between the Mokolo and Mogalakwena tributaries. In July 1950 a Zambezi shark, a species that tolerates fresh water, was caught hundreds of kilometres inland where the Luvuvhu meets the Limpopo. In 2013 flood gates at the Rakwena Crocodile Farm let roughly 15,000 Nile crocodiles escape into the river.
Mining shapes much of the catchment, which counts around 1,900 working mines and another 1,700 or so that have been abandoned.
Source: Limpopo River
