Dams & Hydro

Situated approximately 17 km north-west of the town of Port St Johns, on communal land in the Lusikisiki District in the Eastern Cape, the Port St Johns Water Supply Scheme will comprise an abstraction works from the Umzumvubu River, an off-channel storage dam,  raw water rising mains and a treatment works. The scheme will supplement the greater Regional Water Supply Scheme, providing safe, potable water to the rural communities in the surrounding area.

The Port St Johns Dam is a 23 m high Rubble Masonry Arch (RMC) dam with a storage capacity of 100 000 m³. It was originally conceived as a thin arch dam, but through a process of progressive foundation investigations, the design was changed to an arch gravity configurationuated approximately 17 km north-west of the town of Port St Johns, on communal land in the Lusikisiki District in the Eastern Cape, the Port St Johns Water Supply Scheme will comprise an abstraction works from the Umzumvubu River, an off-channel storage dam,  raw water rising mains and a treatment works. The scheme will supplement the greater Regional Water Supply Scheme, providing safe, potable water to the rural communities in the surrounding area.

The Port St Johns Dam is a 23 m high Rubble Masonry Arch (RMC) dam with a storage capacity of 100 000 m³. It was originally conceived as a thin arch dam, but through a process of progressive foundation investigations, the design was changed to an arch gravity configuration.

Project details