Nqweba Dam, is a dam (Previously known as Vanryneveld's Pass Dam) on the Sundays River , near Graaff Reinet, in the Eastern Cape, South Africa. It was established in 1925. The dam has a capacity of 46,369,000 cubic metres (1.6375×109 cu ft), and a surface area of 10.285 square kilometres (3.971 sq mi), the wall is 42 metres (138 ft), and is 357 metres (1,171 ft) long.