Heavy Rainfall Drives Sharp Increase In Vaal Dam Levels

Heavy rainfall across South Africa drives a significant rise in the Vaal Dam’s water levels, with an increase of over 22 percentage points in just a week.

Similarly, the dam stood at 80.22% on Sunday, climbing to 83.45% on Monday, and reaching 85.73% on Tuesday. This marks a substantial recovery from last Tuesday’s level of 63.34%, demonstrating the impact of sustained rainfall.

Midvaal councillor Pieter Swart welcomed the dam’s recovery, highlighting its importance for regional water security. “As of 06:00 on February 24, 2025, the Vaal Dam’s water level has risen to 83.6%, up from 80.22% yesterday. This increase, driven by existing inflows and contributions from the Grootdraai Dam, supports optimism for stable water supplies,” he said.

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Department of Water and Sanitation (DWS) released a hydrology report this week indicating that dam levels across the country had risen from 80.6% to 81.2%. According to DWS spokesperson Wisane Mavasa, Gauteng, Limpopo, KwaZulu-Natal, Mpumalanga, the Northern Cape, the North West, and the Free State have all experienced an increase in water levels.

“The current rainfall experienced in the central and eastern parts of the country has improved surface water storage, and most of the province’s water supply systems exceeded 80% of full supply capacity,” Mavasa said in a statement.

Mpumalanga and KwaZulu-Natal recorded the highest water level increases, both surpassing 90%. Mpumalanga’s dam levels rose from 95.2% to 95.7%, while KwaZulu-Natal’s increased from 88.9% to 90.4%. Limpopo saw a rise from 84.1% to 86.8%. The Northern Cape experienced a notable improvement, jumping from 62.6% to 73.8%, and North West rose from 71.1% to 72.4%.

In contrast, Gauteng’s dam levels remained stable at 90.5%, while the Western Cape saw a decline from 72.3% to 69.9% due to insufficient rainfall. The Integrated Vaal River System (IVRS), which supplies water to Gauteng, parts of Mpumalanga, the Free State, and North West, showed slight improvement, increasing from 83.6% to 84.6%.

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Despite the recent improvements, the DWS urged citizens to continue conserving water. Mavasa emphasized that while the rainfall has replenished many water supply systems, climate change remains a pressing challenge.

“Although surface water storage capacity has improved in most provinces, we need to be mindful that South Africa is a semi-arid country. We must continue using water sparingly to ensure long-term sustainability.”

However, the department remains cautious about the effects of climate change and urges South Africans to use water responsibly, particularly in flood-prone areas where excessive rainfall has caused damage and disruptions.

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