This project formed part of a broader programme to reduce flood risk for Waihōpai Invercargill (population 57,000+) and critical infrastructure, including Invercargill Airport. The works widened and raised sections of the eastern flood bank of the Waihōpai River between North Road and Stead Street. Widening improves stability and allows for future height adjustments if required, as understanding of climate pressures evolves.
In parallel, Invercargill City Council replaced the Stead Street flood defence with a sheet-pile wall and widened/raised the adjoining Cobbe Road flood bank.
Together, these works addressed known vulnerabilities by reducing flood impacts and sustaining agreed service levels for the city and its essential services.
The eastern Waihōpai River flood bank upgrade began in January 2023 and was successfully completed in May 2024 after two construction seasons.
For more information:
Read more about the Waihōpai Invercargill flood bank upgrade.
