The North End Lake in Port Elizabeth was in desperate need for rehabilitation due to extreme levels of water pollution. The lake is very popular for activities such as power boating, canoeing and angling. The high bacterial levels made the water unsafe for any recreational activities. The Nelson Mandela Bay Municipality in Port Elizabeth assigned Kayalihle Trading as the main contractor for the rehabilitation of the lake.
Stormwater gabion filter ponds were installed at all stormwater inlets and outlets joining the lake. The submerged gabions were filled with geotextile Bidim bags. These bags were filled with a mixture of sand and activated charcoal for water purification and the removal of impurities and contaminants.
Small gabions of size 1 x 0.5 x 0.5 were used along the sides of the filter ponds as flower boxes. These were filled with soil and water reeds planted in them to conceal the gabion structures and to serve as a natural filtration system.
All the gabions and geotextiles were supplied by P&P Plastics and Civils Pty Ltd. in Port Elizabeth.