Tides

Decisions about how we adapt to sea-level rise need to be based on information about our exposure to coastal flooding.

NIWA is leading a New Zealand partnership to map the South and West Pacific Ocean's seabed as part of a worldwide initiative to map the entire globe’s seafloor.

Storm-tide red alerts mark the highest king tides, crucial for emergency and coastal hazard managers to monitor.

Storm-tide red-alert days 2024

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

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.

A six-metre-long autonomous vessel is equipped with artificial intelligence and a range of data gathering equipment, including a battery powered echosounder that can estimate the size of fish populations.

A robot sea craft is the latest tool NIWA scientists are using to help them count fish.

New NIWA-led research shows increasing flood risk is going to be what leads people to make changes to adapt to sea-level rise.

We combine capabilities in weather, wave, storm surge and tide forecasting with tide gauge observations.

NIWA is helping to ensure that New Zealand’s unique and iconic freshwater species are healthy, abundant and thriving.

High waves pounding Wellington’s south coast today are being caused by a deep area of low pressure passing the Chatham Islands, according to NIWA forecaster Ben Noll.