Hartbeespoort Dam: NSRI issues urgent safety warning as water hyacinth chokes!

The South African National Sea Rescue Institute (NSRI) has issued a strong alert to the public regarding hazardous conditions at Hartbeespoort Dam, where rapidly spreading water hyacinth is creating dangerous and unpredictable circumstances for anyone considering launching boats or watercraft.

Hartbeespoort Dam, located in South Africa’s North West Province near the town of Hartbeespoort and roughly an hour from both Johannesburg and Pretoria, is one of the country’s most popular recreational water bodies. Nestled between the Magaliesberg mountain range, it attracts thousands of visitors for boating, fishing, and water sports. However, recurring water hyacinth infestations have become a major environmental and safety challenge.

(c) NSRI

Vast sections of the dam are now blanketed by thick mats of floating hyacinth, which are expected to expand significantly in the coming summer weeks. Seasonal growth, combined with frequent and sudden wind shifts, is causing these dense clusters to drift quickly across the water - transforming previously navigable channels into blocked or impassable routes within minutes.

Key dangers linked to current hyacinth conditions at Hartbeespoort Dam:

• Watercraft becoming trapped in dense vegetation and unable to return to shore.
• Engines overheating or failing due to tangled plant material and hidden debris.
• Concealed hazards such as illegal fishing nets or submerged objects caught within the hyacinth.
• Sudden wind changes pushing large hyacinth mats across the dam, cutting off escape routes.

While NSRI crews remain on standby for critical emergencies, the organisation stresses that conditions are severely compromised and should not be underestimated.

If you still choose to launch a boat, NSRI advises you to:

• Check the latest weather and wind forecasts before departure.
• Closely monitor hyacinth movement before and during your trip.
• Share your planned route and return time with someone on land.
• Carry sufficient supplies and protective gear in case you become stranded.
• Keep a charged mobile phone in a waterproof pouch, wear a lifejacket at all times, and log your journey using the NSRI SafeTRX app.

The NSRI urges all visitors to exercise extreme caution as Hartbeespoort Dam faces one of its most challenging hyacinth surges in recent years.

 

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