Below you will find information on wind direction, wind speed, cloud cover, precipitation, air pressure, air temperature, dam level and flow data for the Vaal dam area. The first table is supplied by Windfinder.com. To follow a link in the table below, right click on the link and click on 'open in a new window' in the dropdown list.
The dam has 59 sluice gates and when in flood up to 35 can be open simultaneously! The wall is just over 50m high and holds back 2,536,000,000 cubic metres of water when the dam is 100% full. The surface area of the dam is 32 060 hectares at full capacity, and is fed by the Vaal and Wilge Rivers.