Within the floodplain areas, the likelihood of flooding varies considerably depending on the existence and standard of any flood alleviation works and the height of the particular site.

The dataset shows areas of populated places along the Southland coastline that should be evacuated when there is a tsunami up to 1 metre (red zone) or between 1 and 3 metres (orange zone). RED ZONE: Shore-exclusion zone. The highest risk and first place to evacuate from in any sort of tsunami warning (natural, unofficial or official).ORANGE ZONE:...