Piako River - Definition and Overview

The Piako River is located to the south of the Hauraki Gulf in the North Island of New Zealand. It is, with the Waihou River, one of the two main rivers which form the Hauraki Plains, at the southern end of the Firth of Thames.

The Piako River rises to the south of Matamata and flows north for 100 kilometres before reaching the Firth of Thames five kilometres west of Thames. On its journey it passes through the towns of Morrinsville and Ngatea.