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Lusikisiki Regional Water Supply Scheme – Weathered Dolerite Borrow Pits

The Department of Water and Sanitation (DWS) has completed a detailed feasibility study for the Augmentation of the Lusikisiki Regional Water Supply Scheme (LRWSS) at Lusikisiki, within the OR Tambo District Municipality (ORTDM) in the Eastern Cape. The LRWSS is proposed to augment the existing water supply to the region between Lusikisiki (approximately 15km inland), and the coast, extending from the Mzimvubu River in the south west to the Msikaba River in the north east. An Environmental Impact Assessment (EIA) for the LRWSS has been completed and awaits approval from the Department of Environmental Affairs (DEA).

The LRWSS will include the construction of an Earth Core Rockfill Dam (proposed Zalu Dam) on the Xura River. Borrow areas within the proposed dam basin cannot provide sufficient impervious material (residual and completely weathered dolerite) for the clay core of an embankment dam, but large quantities of impervious material is available in two borrow areas located within a 2 km radius downstream of the proposed dam.

Published: N/A
Review Period: N/A

Contact Person: Caitlin Smith
Email: caitlin.smith@eoh.co.za
Tel: +27 (0)43 726 7809

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