How to access the downloads
Click the location you wish to download data for. You will be taken to a download page for that monitoring site. Select the folder of the year you want to retrieve data from. There will be a separate zipped data file for each day, with readings at one minute intervals.
A read me file is available at the download page for each site. This file provides information about the site and describes the format of the data. There are also two image files available at the download page for each site. One is a map showing the exact location of the monitoring site, and the other is an image of the monitoring site in its environment.
The read me file details for certain site data are currently incomplete. Some of the site images are also currently unavailable. The affected read me files and images will be updated as the information comes to hand.
Tsunami monitoring network
The network of sea level monitoring sites in New Zealand was established in March 2007 and completed in July 2010.
The primary purpose of the network is to improve New Zealand's response to tsunami hazards.
The sea level data from the gauges are subject to drift. This can be due to a variety of factors including the aging of the sensor components and temperature fluctuations. We advise caution when using the data for long-term scientific analysis.
When, feasible, the zero of the tide gauge (TG0) has been linked to a survey benchmark on the land nearby. The following page provides some guidance on how to “correct” the raw sea level readings provided to a nearby benchmark or to a vertical datum such as New Zealand Vertical Datum 2016.
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:
New Zealand Tsunami Gauge Network | geonet.org.nz
List of site locations
- Auckland
- Boat Cove, Raoul Island
- Castlepoint
- Charleston
- Fishing Rock, Raoul Island
- Gisborne
- Kaikoura
- Korotiti Bay, Great Barrier Island
- Lottin Point
- Manukau
- Napier
- New Brighton Pier
- North Cape
- Owenga, Chatham Islands
- Port Chalmers
- Puysegur
- Sumner
- Tauranga
- Wellington
Antarctica gauges
Toitū Te Whenua maintains two tide gauges in Antarctica: Cape Robers and Scott Base. As part of our annual programme, we calibrate the gauges to ensure they are working correctly. Details of the calibrations are provided in the read me files.
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