The waters of the Limpopo flow sluggishly, with considerable silt content.
Rudyard Kipling's characterization of the river as the "great grey-green, greasy Limpopo River, all set about with
fever-trees", where the "
Bi-Coloured Python Rock-Snake" dwells in the
Just So Stories is apt. Rainfall is seasonal and unreliable: in dry years, the upper parts of the river flow for 40 days or less. The upper part of the drainage basin, in the Kalahari Desert, is arid but conditions become less arid further downriver. The next reaches drain the
Waterberg Massif, a
biome of semi-deciduous forest and low-density human population. The fertile lowlands support a denser population, and about 14 million people live in the Limpopo basin.
Flooding during the
rainy season is an occasional problem in the lower reaches. During February 2000 heavy rainfalls during the passage of a
cyclone caused the catastrophic
2000 Mozambique flood. The highest concentration of
hippopotamus in the Limpopo River is found between the Mokolo and the Mogalakwena Rivers. There is a lot of mining activity in the Limpopo River basin with about 1,900 functioning mines, not counting about 1,700 abandoned mines. == History ==