Mangaiti Gully Erosion Control

Image of child looking at a plant at the Mangaiti Gully

When we protect our waterways, we're making our city a more attractive place to live, work, play and visit. But it's not just people who enjoy healthy streams, it creates an environment for plants, birds and aquatic life such as fish and eels to thrive. We'll never stop erosion, but we can help mitigate it so there is less sediment and higher water quality.

In 2020 assessments were carried out in the Mangaiti arm of the greater Kirikiriroa Gully system. This identified a 10-hectare block of the Mangaiti Gully, between Gordonton Road and Keswick Crescent, as a priority area.

A Significant Natural Area was identified along this stretch. This is an area protected under the District Plan and the Regional Policy Statement for their ecological significance to the Hamilton area. 

Where are we now?


We are currently constructing  access tracks and boardwalks to provide contractors with access to the public gully to carry out the work. 

Maintenance, weeding and planting native species began in May 2021 and will eventually see more than 70,000 native plants planted in the Mangaiti  Gully, contributing to Council's goal of achieving at least 10% indigenous vegetation cover across the city. Currently, native vegetation cover is just 2% across Hamilton city.

This $2.375M project is due for completion during winter 2022 and is funded by the government as part of Hamilton City Council's involvement in the national Three Waters Services reform programme. Hamilton received funding of $17.46M from a national investment of $761M to support economic recovery through job creation and increase or accelerate investment in core water infrastructure. Hamilton City Council agreed to join the first phase of the programme in 2020. 

This project is due for completion during winter 2022.

Want to get involved?


We work with residents and community groups such as the Mangaiti Restoration Trust, to improve our natural habitats for future generations to enjoy. Find out more about how you can get involved.


Page reviewed: 25 Feb 2022 4:04pm