Lake Volta

Lake Volta
source
Name	Lake Volta
Location	Ghana
Type	Reservoir
Inflow	Volta River, Black Volta, White Volta, Oti River
Outflow	Volta River
Basin countries	Ghana, Burkina Faso
Islands	Dodi Island, Dwarf Island
Cities	Akosombo, Kpong, Akuse, Ada Foah

Lake Volta. It is one of the world's largest reservoirs by surface area, located in the southern part of Ghana. The lake was created following the completion of the Akosombo Dam in 1965, which impounded the Volta River. This massive artificial lake plays a critical role in the nation's hydroelectric power generation, transportation, and fishing industry, while also presenting significant environmental and social challenges.

Geography and formation

The lake's basin is fed by several major rivers, including the Black Volta, the White Volta, and the Oti River. It stretches from the Akosombo Dam in the south to the town of Yapei in the north, creating a vast, dendritic shoreline. The formation process involved the flooding of the Volta River valley, which submerged large tracts of forest and forced the relocation of numerous communities. The underlying geology of the region consists primarily of Precambrian rocks, part of the West African Craton. Key geographical features include the large islands of Dodi Island and Dwarf Island, as well as the estuary where the lake meets the Gulf of Guinea at Ada Foah.

Ecology and environmental issues

The creation of the lake significantly altered local ecosystems, replacing riverine forests with a vast lentic environment. It supports a fishery that is vital to local livelihoods, though stocks of species like tilapia and catfish face pressure from overfishing. A major environmental concern is the proliferation of water hyacinth, an invasive plant that clogs waterways and affects transportation and fishing. The submerged vegetation decomposing in the anoxic depths can release methane, a potent greenhouse gas. Furthermore, the use of the lake for irrigation and its role in the hydrological cycle of the region are subjects of ongoing study by organizations like the Volta Basin Authority.

Economic importance

The primary economic function is power generation via the Akosombo Dam and the downstream Kpong Dam, operated by the Volta River Authority, which supplies most of Ghana's electricity. The lake is a crucial inland waterway, transporting goods and people to communities like Kete Krachi and Yeji, reducing reliance on road networks. Its fishery provides income and protein for thousands, though it is managed by the Ministry of Fisheries and Aquaculture Development. Additionally, the lake supports irrigation for agriculture and has growing potential for tourism, particularly around Dodi Island.

History and creation

The concept of damming the Volta River was studied extensively in the early 20th century, but the project gained momentum under the leadership of Kwame Nkrumah, Ghana's first president. The construction of the Akosombo Dam was financed through a loan from the International Bank for Reconstruction and Development and supported by the Kaiser Aluminum company, which sought a reliable power source for its VALCO smelter. The impoundment began in 1964 and was completed in 1965, creating the lake over several years. The project required the resettlement of approximately 80,000 people from 740 villages, a process managed by the Volta River Authority.

Infrastructure and settlements

Major infrastructure includes the Akosombo Dam itself, the hydroelectric plant, and the township of Akosombo, built to house dam workers. Other significant lakeside towns are the industrial center of Akuse, the port of Kpong, and the coastal community of Ada Foah. Ferry services, such as those run by the Volta Lake Transport Company, connect settlements including Kpandu and Buipe. The lake's presence has spurred the development of smaller fishing villages along its shores. The southern end is also near the Accra-Kumasi highway, linking the region to Ghana's major urban centers. Category:Lakes of Ghana Category:Reservoirs in Africa Category:Volta River