72 Landscape Architect and Specifier News
A bifurcated Corten steel viaduct delivers water into bioretention ponds to be cleaned and released into the Guwali Wetland.
The water scheme diverts on average each year some 221 million gallons of stormwater for treatment and reuse. The
treatment train includes a gross pollutant trap, 5,000 square meters of bioretention systems, wetlands and the existing
ponds. Untreated stormwater from the 494-acre upstream catchment previously flowed into the Munni Channel, then into the
Alexandra Canal and into the ocean at Botany Bay.
PHOTO: SIMON WOOD