The Waiuku River is southwest of the city of Auckland in New Zealand. Despite its name, the "river" is in fact an estuarial arm of the Manukau Harbour. It joins the harbour at the south west and extends south for {{convert|12|km|mi|0}}, having its head close to the town of Waiuku. {{coord|37|08|S|174|42|E|display=title|region:NZ_type:river_source:GNS-enwiki}}{{Auckland-river-stub}} 1 : Rivers of the Auckland Region |