- Also called:
- Victoria Nyanza
Lake Victoria
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What is Lake Victoria?
Lake Victoria, the largest lake in Africa, serves as the primary reservoir for the Nile River. It is bordered by Tanzania, Uganda, and Kenya. Lake Victoria covers an area of 26,828 square miles (69,484 square km), making it the second-largest freshwater lake globally, after Lake Superior.
The lake is relatively shallow, with a greatest ascertained depth of 270 feet (82 meters). Its waters fill a shallow depression between the Western and Eastern Rift Valleys. Lake Victoria has over 200 fish species, with the Tilapia being the most economically significant. The lake's only outlet is the Victoria Nile, marking the start of the Nile River.
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Where is Lake Victoria located in Africa?
Lake Victoria, the largest lake in Africa, is mainly situated in Tanzania and Uganda but also borders Kenya. It is the chief reservoir of the Nile River and one of the largest freshwater lakes globally, with an area of 26,828 square miles (69,484 square km). The lake's waters fill a shallow depression in the center of the great plateau that stretches between the Western and Eastern Rift Valleys. The Ugandan cities of Kampala and Entebbe lie along or near the northern coast.
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Which countries share Lake Victoria?
Lake Victoria, Africa's largest lake, is shared by three countries: Uganda, Tanzania, and Kenya. The lake is a vital resource for these countries, supporting dense populations along its shores. The search for the source of the Nile led to the lake's sighting by British explorer John Hanning Speke in 1858, who named it in honor of Queen Victoria. The lake's only outlet is the Victoria Nile, which exits from the northern coast.
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Why is Lake Victoria important to people living nearby?
Lake Victoria is important to the millions of Bantu-speaking people living within 50 miles (80 km) of its shores because it supports the local economy and provides a source of food. The lake's fisheries are a vital source of protein for both rural and urban populations. Independent fishermen, particularly the Luo and Sese Islanders, use planked canoes with outboard motors to catch fish.
Additionally, the Nalubaale and Kiira power stations at Owen Falls in Jinja offer hydroelectric power to Uganda and Kenya. The Nalubaale Dam enhances Lake Victoria's potential as a storage reservoir for the Nile River. Steamer services also operate around the lake.
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What kinds of plants and animals live in Lake Victoria?
Lake Victoria is home to diverse plant and animal life. The shores have plants like the giant sedge, Cyperus papyrus, and vegetation that has been modified by human activity due to heavily populated and cultivated areas near the lake.
The lake has over 200 fish species, including Tilapia, which is the most economically important. Other fish genera include Haplochromis, Clarias (barbel), and Bagrus. The hippopotamus is common around the lakeshores, and waterfowl and fish-eating birds are also noticeable.
However, the lake also faces ecological challenges from invasive species like the water hyacinth and Nile perch.
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What environmental problems affect Lake Victoria today?
Lake Victoria faces several environmental challenges today. Overfishing threatens the fish population, while pollution and invasive species like the Nile perch and water hyacinth cause ecological damage. The lake's surrounding areas are densely populated, intensifying these issues. Additionally, the use of water for waste dilution and cooling purposes introduces chemical and thermal pollution, harming aquatic life and causing deoxygenation.
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Lake Victoria, largest lake in Africa and chief reservoir of the Nile, lying mainly in Tanzania and Uganda but bordering on Kenya. Its area is 26,828 square miles (69,484 square km). Among the freshwater lakes of the world, it is exceeded in size only by Lake Superior in North America. It is an irregular quadrilateral in shape, and its shores, save on the west, are deeply indented. Its greatest length from north to south is 210 miles (337 km), its greatest breadth 150 miles (240 km). Its coastline exceeds 2,000 miles (3,220 km). Its waters fill a shallow depression in the centre of the great plateau that stretches between the Western and Eastern Rift Valleys. (See East African Rift System.) The lake’s surface is 3,720 feet (1,134 metres) above sea level, and its greatest ascertained depth is 270 feet (82 metres). Many archipelagos are contained within the lake, as are numerous reefs, often just below the surface of the clear waters. Lake Victoria has more than 200 species of fish, of which the Tilapia is the most economically important. The lake’s basin area covers 92,240 square miles (238,900 square km).
The lake’s shores vary in aspect. The lake’s southwestern coast is backed by precipices 300 feet (90 metres) high, which give way on the western coast to papyrus and ambatch swamps marking the delta of the Kagera River. The lake’s deeply indented northern coast is flat and bare. A narrow channel leads into the Kavirondo Gulf, which has an average width of 16 miles (25 km) and extends for 40 miles (64 km) eastward to Kisumu, Kenya. The Ugandan cities of Kampala and Entebbe lie along or near the northern coast. At the lake’s southeastern corner is Speke Gulf, and at the southwestern corner Emin Pasha Gulf. Of the numerous islands in the lake, Ukerewe, north of Speke Gulf, is the largest, with wooded hills rising 650 feet (200 metres) above the lake. It is densely populated. At the lake’s northwestern corner are the 62 islands of the Sese archipelago, some of them of striking beauty.
The Kagera River, the largest and most important of the lake affluents, enters the western side of Lake Victoria just north of latitude 1° S. The only other river of note entering from the west is the Katonga, north of Kagera. The lake’s only outlet is the Victoria Nile, which exits from the northern coast.
The search by Europeans for the source of the Nile led to the sighting of the lake by the British explorer John Hanning Speke in 1858. Formerly known to the Arabs as Ukerewe, the lake was named by Speke in honour of Queen Victoria of England. A detailed survey of the lake was made by Sir William Garstin in 1901. Plans for gradually raising the level of the lake’s waters were completed in 1954 with the construction of the Owen Falls Dam (now the Nalubaale Dam) on the Victoria Nile at Jinja, Uganda. The dam provides hydroelectric power on a large scale and made the lake a vast reservoir. A second dam, Kiira, was later constructed 0.6 mile (1 km) from Nalubaale. It was completed in 1999 and began producing hydroelectric power the next year.
In the late 20th and early 21st centuries, the lake and its surrounding areas were threatened by the consequences of overfishing as well as by ecological damage from pollution and invasive species such as the Nile perch and water hyacinth. The Lake Victoria region is one of the most densely populated in Africa; within 50 miles (80 km) of its shores live several million people, nearly all Bantu-speaking. There are local steamer services around the lake.