Olifantsnek Dam, is an arch type dam located on the Hex River, near Rustenburg, North West, South Africa. It was established in 1929.[1] The dam has a capacity of 14,200,000 cubic metres (500,000,000 cu ft) and a surface area of 272 hectares (670 acres), the wall is 30 metres (98 ft), and has a length of 129 metres (423 ft).[2] The dam serves mainly for irrigation purposes and its hazard potential has been ranked high (3).