The largest artificial lake in the world

Walter Reservoir in Ghana, Africa, with an area of 8,480 square kilometers, is the largest artificial lake in the world, which is 1.8 times that of Qinghai Lake, the largest lake in China (4,583 square kilometers).

Volta river ranks ninth in Africa, with a length of only1600km and a drainage area of 400,000km2. But its annual average flow rate reaches 1, 654,38+0.80 cubic meters per second. Unfortunately, most of them are discharged in flood season, and the minimum flow in dry season is only 1.4 cubic meters, which is almost the bottom of the river. Therefore, because of the drought in rural areas, it is difficult for residents to even eat water. If a dam is built,

196 1 ~ 1965, the Ghanaian government, with the joint investment of the World Bank and the international consortium, built an arc gravity dam in Akosombo Gorge, which is 0/0 km away from the coast, and impounded the volta river. The dam is 640m long and 14 1 m high. The 350-meter-long auxiliary dam sealed the gap surrounded by mountains. Because the valley basin is wide and rich in water resources, an unparalleled man-made "ocean" has been formed in less than two years. The backflow is 498km, with an average depth of 19m and the deepest point of 75.8m, accounting for 3.6% of Ghana's territory, and 80,000 people have emigrated. The storage capacity is148 billion. The lakeshore is 7200 kilometers long, and it takes 1 month to roam along the lakeshore by boat.