Hartbeespoort Dam is so polluted that a hyacinth mat covers the surface, making it dangerous for boaters and harming the ecosystem. The Hartbeespoort Dam, also known as Harties, was constructed ...
In the early 2000s DR Congo and its neighbours - South Africa ... like the Inga Dam. He points to the UK's Mersey Tidal Project - which if successful would be the world's largest tidal barrier.