Concrete to make way for natural waterway

Last Updated : 08 Mar 2023
Blackgate Reserve

Work is set to start at Blackgate reserve in Manurewa to remove concrete channelling to create a more natural waterway.

Manurewa Local Board chair Glenn Murphy says the work is being done to support the natural environment, as part of the larger Puhinui Stream regeneration programme: Te Whakaoranga o te Puhinui.

The stream runs from the peak of Totara Park through the residential area of Wiri, into the Manukau commercial area and out to the Harbour.

“Access tracks will be created along either side of the stream edge and more planting will take place to create an improved natural environment for park users.

“Removing the concrete and replacing it with a natural environment will benefit fish and animal life. At the moment tuna (eels) are stopped in any migration by the concrete, which acts as a physical barrier and works to raise the water temperature, making it unsuitable for them.”

Erosion and sediment control initiatives are a feature of the design, which also includes a rock lining, stabilisation measures and widespread riparian planting.

Substantial earthworks will be undertaken to remove existing concrete channelling, with the old channel filled where required.

Murphy says the work will start soon and take about six months, which will mean the reserve and walkways will be closed around each site during construction.

“Pedestrian footpaths and alternative routes will be fenced off. There will be construction noise, and machinery movements but approved traffic management plans will be in place.”

He says the work is consistent with the board’s stated aim of ensuring the natural environment is valued, protected and enhanced.

For any issues relating to the works, contact the contractor directly: Oliver Ferrick - Glasgow Contractors 027 203 2184 and Queries about the project, can be emailed to

Stay connected

Want to stay up to date with all the latest news from your area? Sign up for our Manurewa Local Board E-news and get it delivered to your inbox each month. 

Back to News