Rukwa, Lake

Rukwa, Lake
Shallow lake, southwestern Tanzania, eastern Africa.

It covers an area of about 1,000 sq mi (2,600 sq km) and lies midway between Lake Tanganyika and Lake Malawi at an elevation of about 2,600 ft (800 m). It has no outlet, and at times it is completely dry. Its water is brackish, and there are salt pans near its southwestern end. Crocodile and hippopotamus inhabit the lake, and fish abound.

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      lake, southwestern Tanzania, Eastern Africa. It is part of an inland drainage system in the Rukwa Trough, which probably at one time belonged to the East African Rift Valley system of which Lake Nyasa is a part. The lake covers an area of about 1,000 square miles (2,600 square km) and lies midway between Lake Tanganyika and Lake Nyasa, at an elevation of about 2,600 feet (800 m); it has an average depth of 10 feet (3 m). The British explorer John Hanning Speke heard it described as an impassable swamp, and in 1880 Joseph Thomson (Thomson, Joseph), a noted Scottish geologist and explorer, saw the lake from a distance. It has a drainage basin with an area of 31,000 square miles (80,000 square km) in Tanzania. There is no outlet from the lake, and at times it is completely dry. In 1929 it shrank to a length of about 30 miles (50 km), but 10 years later it expanded to about 80 miles (130 km) with a width of 25 miles (40 km). The lake's fluctuations in size are caused by the varying inflow of streams. Its water is brackish, and there are salt pans near its southwestern end. Crocodile and hippopotamus inhabit the lake, and fish abound. Subsistence and commercial fishing operations centred on the lake are important to the local population. The lake lies over the epicentre of an earthquake-prone zone.

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Universalium. 2010.

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