Sea Level Data

LINZ is currently in the process of establishing a network of sea level monitoring sites at 19 locations around New Zealand and Antarctica. The network is due to be completed by mid-2010.

Sea level data downloads

At present, seven sites have been installed and sea level data (tide gauge readings) for each of these is available for download via the Sea Level Data Downloads page. This page also shows the planned locations of the remaining sites. more...

With the exception of the Antarctic site, the primary purpose of the network is to upgrade and improve New Zealand's response to tsunami hazards. However, the data generated can also be used for other purposes.

To view plots of the sea level data and for more information on the use of sea level data in a tsunami detection system, visit the GeoNet website.

See below for details on sea level data that is also available from LINZ on behalf of other organisations, and from other sources.

Other sea level data available from LINZ

LINZ also obtains sea level data from port companies, regional councils and the National Institute of Water & Atmospheric Research Ltd (NIWA). This data is retained by LINZ and can be made available on request subject to the approval of the supplier of the data.

Requests for this sea level data can be made using our contact form (category type = "Nautical information").

Other sources of sea level data

Information about NIWA's sea level stations and data access can be found at NIWA - Sea levels and long waves and Environmental Data Explorer - Sea level monitoring stations.

The University of Hawaii Sea Level Center (UHSLC) also holds sea level data for a number of New Zealand sites. To find New Zealand data, click on the "Country" column to sort by country then scroll down to New Zealand.

Find out about other LINZ datasets.