Conclusion

Hydrology graph showing actual and predicted inflow and outflow rates for the Vaal Dam and its capacity levels from 20 Jan to 15 February 2010

To summarize the situation, the Vaal Dam reached 100% capacity on 23 to 24 January. It peaked on 30 January from additional heavy rainfall. After that, inflow into the dam started to decrease. However, its percent capacity remained above 100% due to the natural delay in the rainfall's arrival at the dam.

Flooding events such as this often have severe impacts on lives, property, and infrastructure. Roads and bridges are often damaged or washed away, and people lose their lives as they try to cross raging rivers. Although regular rainfall is mostly welcomed by the agricultural community, heavy and persistent rainfall events can leave fields waterlogged and crops ruined.