Waiau township has been subject to many flood events from both the Mason and Waiau Uwha Rivers. Numerous ad-hoc stopbanks have been constructed over the past century, the earliest dating between 1907 and 1922 by the Waiau Riverside Protection Board.
Completed in February 2022, this project improved the level of flood protection to Waiau township through the remediation and strengthening of two existing stopbanks on Inland Road, and through the construction of a new stopbank bordering the eastern side of the township.
Find out more about this project on the Environment Caterbury website.