Coastal hazards

Storm-tide red-alert days 2024

On this page, you can find information about tide forecasts, sea-level network, tidal model of New Zealand's EEZ, and red-alert days for coastal flooding.

NIWA's Tide forecaster provides tidal data for any point in New Zealand.

Cam-Era is a network of computer-controlled cameras that monitor the New Zealand environment for research and resource management. These are also useful for surfers and swimmers.

New research shows that in some cases, lifting houses may be a cost-effective way to reduce intermittent flooding risk.

New maps from NIWA and the Deep South National Science Challenge show areas across Aotearoa New Zealand that could be inundated by extreme coastal flooding.

Beachgoers could be safer thanks to a new technology with the potential to give real-time updates of rip currents.

Prior to 15 January, Hunga Tonga-Hunga Ha'apai was a little-known undersea South Pacific volcano with a long name. Within 24 hours, it  was a global phenomenon – the site of the largest atmospheric explosion in almost 150 years. Jessica Rowley looks at why a remote Tongan volcano took the world by storm.

Specialised monitoring equipment has been installed in Bay of Plenty estuaries to understand whether our coastal wetlands can survive the threat of inevitable sea-level rise.

NIWA and Surf Life Saving New Zealand are working together to develop a state-of-the-art, rip current identification tool.

Stacy Mohan looks at how the shockwaves from a remote Tongan island rippled through NIWA’s research community.

The three-year PARTneR–2 project aims to help countries in the Pacific become more resilient to the impacts of climate-related hazards.