What we're doing

Waipaoa River Flood Control Scheme

The Waipaoa River Flood Control Scheme (the scheme) was designed in 1949 and was completed in 1969.

The scheme is considered to be one of Council’s most valuable assets. It protects some 10,000 hectares of fertile floodplain land and has increased the amount of land being used for high yield horticultural purposes.

The scheme includes 64km of stopbank and associated pipes located approximately between Te Karaka township and the Waipaoa river mouth.

About the project

The project is designed to improve capacity of the existing flood control scheme and:

  • increase the top width of the existing stopbanks from 1.8m to 4m and raise the height between 1-2 metres in some places
  • maintain flood protection for a one-in-100-year flood event (or a 1% chance of that sized storm occurring in any one year)
  • account for the effects of climate change out to 2090 (2.1 degrees warming climate and 0.67m seal level rise)
  • address river bank erosion.

Project timeline

Planned works

March - June 2021 - to continue upstream of Matawhero Bridge along eastern side stopbanks.

Oct 2021 onwards - upgrades continue upstream along eastern side stopbank until all complete, then western side stopbank to be upgraded.

2028/29 - Waipaoa Flood Control Scheme upgraded and fully operational.

Oct 2018 - resource consent approved to undertake the stopbank improvements. Resource consent declined for the provision to allow for cycle trails to be constructed along the stopbanks.

Feb 2019: 2.1km of stopbanks raised and widened on first section of eastern stopbank between Ford and Bruce roads.

Oct - Dec 2019 - 2km of stopbanks raised and widened on eastern side between Bruce and Ferry roads.

Dec 2019 - Feb 2020 - 2km of stopbanks raised and widened on eastern side just upstream of Railway Bridge near Waipaoa river mouth.

Oct - Dec 2020: 2km of stopbanks to be raised and widened on eastern side between the Waipaoa river mouth and Railway Bridge.

Oct 2020 - March 2021 - 4km of stopbanks to beraised and widened on eastern side between Railway Bridge and Matawhero Bridge