<P> The Vaal Dam in South Africa was constructed in 1938 and lies 77 km south of OR Tambo International Airport . The lake behind the dam wall has a surface area of about 320 square kilometres ( 120 sq mi ) and is 47 meters deep . The Vaal Dam lies on the Vaal River , which is one of South Africa 's strongest - flowing rivers . Other rivers flowing into the dam are the Wilge River , Klip River , Molspruit and Grootspruit . It has over 800 kilometres ( 500 mi ) of shoreline and is South Africa 's second biggest dam by area and the fourth largest by volume . </P>
<P> The Vaal Dam in South Africa was constructed in 1938 and lies 77 km south of OR Tambo International Airport . The lake behind the dam wall has a surface area of about 320 square kilometres ( 120 sq mi ) and is 47 meters deep . The Vaal Dam lies on the Vaal River , which is one of South Africa 's strongest - flowing rivers . Other rivers flowing into the dam are the Wilge River , Klip River , Molspruit and Grootspruit . It has over 800 kilometres ( 500 mi ) of shoreline and is South Africa 's second biggest dam by area and the fourth largest by volume . </P>
where does the vaal dam get its water from
where does the vaal dam get its water from
Vaal River
Vaal River