2. VANDERKLOOF DAM
Provinces: Northern Cape & Free State
Capacity : 3, 171, 300 megalitre
The Vanderkloof Dam was originally named the P. K. Le Roux Dam. It is situated approximately 130 km downstream from Gariep Dam and is fed by the Orange River, South Africa’s largest river. Vanderkloof Dam was originally scheduled to commence at the same time as the Gariep Dam, but in October 1967, construction was postponed in accordance with government measures to curb inflation in the national economy. During 1969, the Cabinet decided to proceed with the project and in 1970 tenders were requested for a second time. The tender prices received, were much higher than expected with the result that Cabinet decided that the Department of Water Affairs should construct the dam using their own construction staff and equipment. The Vanderkloof Dam was designed by a consortium of local and overseas consultants and constructed by the Department of Water Affairs and Forestry. Construction started in April 1971 and the dam was finally commissioned in September 1977. The dam has a capacity of 3, 171, 300 megalitres and a surface area of 133.43 square kilometres when full. Other rivers flowing into this dam are the Berg River, two unnamed streams coming in from the direction of Reebokrand, the Knapsak River, Paaiskloofspruit, Seekoei River, Kattegatspruit and the Hondeblaf River, in a clockwise direction. The dam forms an integral component of the Orange River Project (together with Gariep Dam) and supplies water to the Riet River catchment as well as to the various users along the remaining 1 400 km of the Orange River.