Natural hazard map portal

These hazard maps present our most up-to-date information and are available through an online GIS viewer.

The maps include river flooding, coastal flooding, coastal erosion and tsunami hazard zones.

The maps have been compiled using an assessment of best available information and should give a good indication of the areas at risk of flooding.

However, flood mapping is a complex process which involves some approximation of the natural features and processes associated with flooding. Before using the flood maps, please ensure that you understand the disclaimer.

How do I access the maps?

View the hazard maps online button.

How do I use the maps?

The river flood hazard maps and coastal flood hazard maps are all available on the 'Natural Hazards' portal online. You'll just need to change the layers to see each one. If you're not sure what to do, then use our quick start guide to help you find your way around. 

Quick Start Guide for the Natural Hazard Maps (PDF, 1.4MB)

Natural hazards map layers screen shot.

What do the maps mean for me?

The hazard maps provide an indication as to the hazards that different areas may be subject to. Under the Building Act, district councils will take into account the flood maps when making decisions on consents (such as for building or subdivision). For queries on this please contact your district council:

  • Far North District Council – 0800 920 029 or 09 401 5200
  • Kaipara District Council – 0800 727 059 or 09 439 3123
  • Whangarei District Council – 0800 932 463 or 09 430 4200

What if I disagree with these maps?

If you believe that a particular location on a map is not at risk of flooding, or you have information that you think may not have been taken into account, get in touch with the regional council on 0800 002 004.

River flood hazard maps

These maps show the likely extent of river flooding during a 10-year or 100-year flood event. A 10-year flood area has a 10% chance of flooding annually, whilst the more extensive 100-year flood area has a 1% chance of flooding annually.

For more information on how river flood risk is assessed please visit our River flood hazard maps information.

Coastal hazard maps

These maps show areas potentially subject to coastal erosion and coastal flooding considering 50- and 100-year timeframes, including sea level rise projections due to climate change.

For more information on each type of coastal hazard that the council has assessed, visit:

View the hazard maps online button.

Disclaimer

The maps have been compiled using an assessment of best available information, and should give a good indication of the areas at risk of flooding.

However, flood mapping is a complex process which involves some approximation of the natural features and processes associated with flooding. Before using the flood maps, please ensure that you understand the disclaimer.

Read the Flood Maps disclaimer (PDF, 228KB)

Read the Coastal Hazard Maps disclaimer (PDF, 139KB)