Woodstock Dam is located on the upper reaches of the Tugela, KwaZulu-Natal and is the main source of water for the Thukela-Vaal Transfer Scheme.The dam was commissioned in 1982, has a storage capacity of 373.26 million cubic metres (13.182×109 cu ft), and a surface area of 29.129 square kilometres (11.247 sq mi)[citation needed], the dam wall is 54 metres (177 ft) high.