Lake Kariba is an artificial lake and reservoir formed by the Kariba Dam, a double curvature concrete arch dam in the Kariba Gorge of the Zambezi river basin between Zambia and Zimbabwe. It lies 1,300 kilometres (810 mi) upstream from the Indian Ocean.

Lake Kariba is over 223 km (139 mi) long and up to 40 km (25 mi) wide. It covers an area of 5,580 square km (2,150 square mi) and its mean depth is 29 m (95 feet); the maximum depth is 97 m (318 ft). The resulting storage capacity is 185 cubic km (44 cubic mi) and it is the world's largest man-made reservoir by volume, four times as large as that associated with the Three Gorges Dam in China. The huge mass of water -- about180,000,000,000,000 kg (200 billion tons) -- is believed to have caused induced seismicity in the seismically active region, including over 20 earthquakes of greater than 5 magnitude on the Richter scale.

Lake Kariba has several islands, including Maaze Island, Mashape Island, Chete Island, Sekula, Sampa Karuma, Fothergill, Spurwing, Snake Island, Antelope Island, Bed Island, and Chikanka. The Zimbabwean town of Kariba was built for construction workers on the dam, while some other settlements such as Binga village and Mlibizi in Zimbabwe and Siavonga and Sinazongwe in Zambia have grown up to house people displaced by the water.

The lake was filled between 1958 and 1963 following the completion of the dam project at its north-eastern end, flooding the Kariba Gorge.

The photo is of Lake Nasser.

More Info: en.wikipedia.org