The Wairoa River, also known as Wairoa South, is the second longest river in the Auckland Region of New Zealand's North Island. It flows south from its sources in the Hunua Ranges, then northwards into the Hauraki Gulf. The Wairoa Reservoir and Hūnua Falls form sections of the river, and the Wairoa River flows adjacent to the township of Clevedon.
An aerial view of the Wairoa River mouth
The Hauraki Gulf / Tīkapa Moana is a coastal feature of the North Island of New Zealand. It has an area of 4000 km2, and lies between, in anticlockwise order, the Auckland Region, the Hauraki Plains, the Coromandel Peninsula, and Great Barrier Island. Most of the gulf is part of the Hauraki Gulf Marine Park.
True-colour image showing the Hauraki Gulf / Tīkapa Moana, with Auckland (left) and the Coromandel Peninsula (right), by NASA's Terra satellite, 2002.