Coasts

Storm-tide red-alert days 2024

Reducing the risk of new freshwater invasive species, minimising the impacts of these species, and developing methods for reducing or eradicating those populations.

A web-based taxonomic resource tool has been developed to improve the accuracy and consistency in soft sediment estuarine and coastal benthic intertidal and shallow subtidal macroinvertebrate identification across New Zealand.

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.

NIWA posters, as well as bathymetry, sediment, and circulation charts. 

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.

Mangrove systems on oceanic atolls may lose the race to keep pace with sea-level rise.

These fact sheets bring together existing scientific information on these effects, along with expert scientific knowledge, in an easy-to-read format by community groups and land-water managers interested in protecting m­ahinga kai.

A new study is doing a deep dive into whether mussel farms could help reduce nitrogen in New Zealand waters.

Long-term protection of Otago’s coastal habitats took a step closer to reality after more than 100 marine Significant Ecological Areas were identified.