Coasts

Ngā Waihotanga Iho, the estuarine monitoring toolkit for Iwi, has been developed to provide tangata whenua with tools to measure environmental changes in their estuaries. While Ngā Waihotanga Iho is based on sound science principles, it is also underpinned by tangata whenua values.

Port Taranaki sea levels

Timaru sea level

Sumner Head

Pouto Point sea levels

Moturiki Island sea levels

Lyttelton sea levels

Little Kaiteriteri sea levels

Data source – NIWA
Latest data The upper plot compares raw data (blue) and forecast tide (red). When the two curves are aligned there is no storm surge, which is the elevation or depression of sea level as a result of meteorological conditions. But if the raw data lie above or below the forecast tide, it means we have positive or negative storm surge. The lower plot compares storm surge (SS) with inverted barometer (IB), which is derived from atmospheric pressure. When the two curves are aligned it means that the storm surge is being driven by local pressure changes.

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These endemic freshwater crustaceans are truly living fossils that originated in Gondwana at least 325 million years ago and have changed little morphologically since that time.