Portages in New Zealand, known in Māori as Tō or Tōanga Waka, are locations where waka (canoes) could easily be transported overland. Portages were extremely important for early Māori, especially along the narrow Tāmaki isthmus of modern-day Auckland, as they served as crucial transportation and trade links between the east and west coasts. Portages can be found across New Zealand, especially in the narrow Northland and Auckland regions, and the rivers of the Waikato Region.

Waitematā Harbour is the main access by sea to Auckland, New Zealand. For this reason it is often referred to as Auckland Harbour, despite the fact that it is one of two harbours adjoining the city. The harbour forms the northern and eastern coasts of the Auckland isthmus and is crossed by the Auckland Harbour Bridge. It is matched on the southern side of the city by the shallower waters of the Manukau Harbour.