Auckland Council and central government are making significant investments to reduce flood risks in Māngere. We started work on this project in April 2025 and expect to finish in mid-2026.
Te Kaupapa Mahi mō te Manawaroa i te Waipuke o te Manga o Te Ararata Te Ararata Creek Flood Resilience Project
In May 2026, we finished work on the new Walmsley Road bridge and re-opened the road. We thank the community for their patience and understanding during the construction.
About the project
This project is part of our Making Space for Water programme. It aims to:
- make the stormwater network more resilient to future storm events
- increase the capacity of the stormwater network
- allow stormwater to flow more freely into the Manukau Harbour.
This will:
- reduce potential flood levels for over 250 properties in the area, including:
- 38 properties that had intolerable risk to life flooding When a flood situation is so dangerous that people’s lives are at serious risk. in 2023
- over 100 properties that experienced floor-level flooding When floodwater is at the same height as the rooms where people live, work or sleep. in 2023
- reduce flood risks caused by blockages for up to 1000 properties
- improve access to Te Ararata Creek to make it quicker and easier to maintain by clearing rubbish and weeds.
How we will do this
To reduce flooding risks in the area, we will:
- replace and widen the Walmsley Road Bridge between Hall Avenue and McKenzie Road to increase waterflow beneath it
- build a debris trap A debris trap stops large rubbish and natural materials from blocking pipes or waterways which can cause flooding. in the creek near the end of Hinau Road to stop large rubbish blocking the creek
- plant native shrubs and grasses along the edge of the creek to help stabilise the banks
- build a permanent maintenance platform and an accessway to the culverts A stormwater pipe not connected to the main stormwater system. These are normally used under roads or driveways. on Mahunga Drive. This will make it easier for our maintenance teams to keep the culverts clean and free from blockages.
While this project will not completely prevent flooding, investing now will reduce risks by:
- providing more protection against future floods
- better preparing us for heavy rain events.
Map of the project area
Te Ararata Creek Flood Resilience Project area.
Ongoing construction
In April 2026, we started building the debris trap in the creek at the end of Hinau Road. We expect the work to be complete in August.
We have started work to upgrade the Mahunga Drive culverts A stormwater pipe not connected to the main stormwater system. These are normally used under roads or driveways. and build a permanent maintenance platform and accessway. Temporary traffic management will be in place during construction. We expect the work to be complete in six weeks.
How the work will affect you
- Construction will usually take place between 7.30am and 6pm every Monday to Saturday, and on Sundays for emergency works only.
- During work hours, noise, dust and vibrations might affect neighbouring properties. We will monitor this to make sure they stay within required limits.
- If we need access to private property, we will contact you beforehand.
More information
Email bluegreen@aucklandcouncil.govt.nz for more information about this project.