The Department of Water and Sanitation (DWS) has urged the public to stay away from rivers, streams, dams, and all watercourses, as persistent heavy rainfall continues to trigger dangerous flooding.
It is reported the recent downpours have already caused widespread damage in Gauteng, Mpumalanga, and several other regions.
Authorities have urged residents to stay indoors and avoid walking, driving or crossing bridges where water levels and flow are high.
The public has also been cautioned against recreational and religious activities in rivers and dams during this period, particularly where strong currents are present.
The South African Weather Service (SAWS) has issued warnings of continued heavy rainfall and severe thunderstorms.
“Severe weather chart for tomorrow, November 17, 2025. A. Yellow Level 2 warning: Disruptive rain leading to localised flooding of susceptible formal/informal settlements or roads, low-lying areas and bridges.”
Water levels remain high across major systems, including the Bloemhof Dam, fed by the Vaal and Vet Rivers, which has increased to nearly full capacity, placing nearby communities at further risk. As a precaution, controlled water releases have been initiated.
In response, DWS has increased water outflows at both the Vaal and Bloemhof dams to manage inflows and prevent overtopping.
According to the department, outflows at the Vaal Dam were raised from 17 to 60 m³/s and from 60 to 120 m³/s at Bloemhof Dam. The dams were sitting at 104.07% and 98.88%, respectively, on Friday morning.
“These outflows are necessary to protect infrastructure and reduce flooding while maintaining safe operating levels,” the department said, adding that continuous monitoring is underway to ensure compliance with dam safety protocols.
Storm Report SA also issued an operational alert for the Vaal Dam, confirming phased sluice gate openings from 09:00 to 13:00 on Friday. Residents have been asked to report noticeable changes in water levels, providing photos, locations and times where possible.
Authorities have reiterated that water safety remains critical as storms persist.
“Water is a powerful force and must be treated with caution. We urge communities to remain alert and prioritise their safety during this period of severe weather,” the department said.
Earlier this year, the Saturday Star reported severe flooding in some communities, with homes submerged, properties destroyed and residents displaced.
anita.nkonki@inl.co.za
Saturday Star