Regional sea-level rise flood spatial data

We build our maps of sea level flooding from analysis of sea-level measurements and numerical models and we have verified the results against sea-level run-up observations collected after large storm-tide events. This sea-level rise flood dataset comprise 9 extreme coastal flooding scenarios (2, 5, 10, 20, 50, 100, 200, 500 and 1000-year average recurrence interval) and 21 relative sea-level rise scenarios ranging from 0 to 2 metres in 10 cm (0.1 m) increments. Our maps are created using a Geographic Information System (GIS). As a result, we can make attractive images and provide valuable climate information as digital layers to be incorporated into your specific project.

More Information on NIWA's sea-level rise products and services can be found here.

A national dataset for ARI 100 can be found here.

This webpage provides regional datasets for 21 sea-level rise scenarios (SLR) and 8 average recurrence intervals (ARI).

The data is available under certain licence arrangements and at fees (Why?).

Data access per user account is limited to 30 datasets for one region (Why?). 

If you need other / more data or licence arrangements, please lodge a request through data enquiries.