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Overland flow paths are routes that carry stormwater across land during heavy rain. Keeping them clear helps to reduce the risk of floods.
About overland flow paths
Overland flow paths are routes where water naturally flows across the ground. They carry extra stormwater during heavy rain and when the pipe network is full, blocked or does not exist. When this happens, these paths become temporary, fast-flowing streams.
Water can build up and enter homes if an overland flow path is blocked by items like fences, buildings, trees or stored items. Keeping these routes clear reduces flood risks and helps keep people and property safe.
Overland flow paths can cross both public and private land. Use our Flood Viewer to find out if an overland flow path crosses your property.
How this affects you
Our teams are assessing overland flow paths across Tāmaki Makaurau / Auckland to identify issues on public and private land. If an overland flow path crosses your property, we will advise you on how to manage it.
The results from these assessments will help us plan and prioritise bigger improvements across the region.
How to manage your overland flow paths
To keep flow paths clear and reduce flood risks, you can:
- remove debris, Scattered pieces of rubbish or leaves. rubbish, garden waste or items that could be carried by water and cause blockages downstream
- avoid placing outdoor furniture, bins, sheds or storage in a flow path
- keep gutters, downpipes Pipes that run from the gutters to the ground that carry rainwater into the stormwater or combined system, private ground soakage device or rain tank. and catchpits Pipes that run from the gutters to the ground that carry rainwater into the stormwater or combined system, private ground soakage device or rain tank. clear and in good working order.
If you own your home:
- make sure fences and landscaping let water pass through, for example by using raised or slatted designs
- use permeable surfaces Natural ground surfaces, including grass and soil, which allow water to pass through and soak into the ground, reducing the volume of run-off flowing over the ground. for driveways and outdoor areas where possible
- get professional advice and apply for the right consents before making major changes.
If you rent your home:
- tell your landlord or property manager about any blockages or drainage issues.
If we find serious issues
If your overland flow path continues to cause serious issues, we may take action to make sure they are safely managed and kept clear. We will explain what needs to change and how to fix the issue.