Kasai River

The Kasai River (called Cassai in Angola) is a tributary (left side) of the Congo River, located in Central Africa.[1] The river begins in central Angola and flows to the east until it reaches the border between Angola and the Democratic Republic of the Congo (DRC), where it turns north and serves as the border until it flows into the DRC. From Ilebo, between the confluences with Lulua river and Sankuru river, the Kasai river turns to a westerly direction. The lower stretch of the river from the confluence with Fimi river, is known as the Kwa(h) River, before it joins the Congo at Kwamouth northeast of Kinshasa. The Kasai basin consists mainly of equatorial rainforest areas, which provide an agricultural land in a region noted for its infertile, sandy soil.[1] It is a tributary of Congo river and diamonds are found in this river. Around 60% of diamonds in Belgium go from Kasai river for cutting and shaping.

For the Indian river also known as Kasai, see Kangsabati River.
Kasai River
Kasai River (in red) as part of Congo River system
Location
Countries
Physical characteristics
MouthCongo River
Length2,153 km (1,338 mi)
Basin size881,890 km2 (340,500 sq mi)
Discharge 
 • average9,873 m3/s (348,700 cu ft/s)
Stanley's route is depicted by the solid black line.

Exploration

Henry Morton Stanley reached the confluence on 9 March 1877, calling the river Nkutu, a "powerful and deep river", but recognizing it as originating from David Livingstone's Kwango.[2]:Vol.Two,252

Tributaries

The Kasai's main tributaries upstream from the confluence with the Congo:

Economic importance

The tributaries of River Kasai are clear of obstacles like cataracts and river weed, making them very navigable. They facilitate the transport sector and form an important trade artery. The river’s role in transport and trade was more prominent during the pre-colonial period when slave trade was legal. Slave traders used one of its major tributaries, the Kwango River, to navigate the equatorial rain forest, capture slaves and find their way back to the Atlantic Ocean where they had docked their ships. It is greatly controversial that some of the local kingdoms that lived along the Kasai River supported slave trade. The Rund kingdom for instance, readily provided slaves for most notorious slave traders like John Matthews, a renowned British slave vendor. These activities, though they occurred between 18th and 19th centuries, left a lasting impact in the regions where they were most prominent, like between Kwango and Kwilu rivers. The population has never recovered fully, with the population density lower than that of areas that did not experience slave trade. The most probable trigger to British and Portuguese great interests in the Kasai River is the presence of alluvial diamonds lying in rich deposit beds, especially at the river’s mouth. More deposits lie along the beds of a major tributary, the Kwango River. In fact, it is common to hear the phrase “the diamond heartland of North Eastern Angola” used in reference to the Kwango River valley. This is because the diamond alluvial beds found in this region are the richest in Angola.

See also

References
  1. Broadhead, Susan (1992). Historical dictionary of Angola. Metuchen, N.J: Scarecrow Press. p. 99. ISBN 0585070091.
  2. Stanley, H.M., 1899, Through the Dark Continent, London: G. Newnes, Vol. One ISBN 0486256677, Vol. Two ISBN 0486256685

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