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Geodetic technical reports commissioned by or produced for Toitū Te Whenua.

Many heights around New Zealand have been referenced to a local sea level, or local vertical datum (LVD). In the past this was the most practical method of determining a height reference point, but more robust height references are now available to replace these.

New Zealand Transverse Mercator 2000 (NZTM2000) is the projection used for New Zealand's Topo50 1:50,000 and other small-scale mapping. It is the recommended projection for use within mainland New Zealand.

In New Zealand the accuracy of coordinates and heights is classified using a system of orders. These indicate the expected accuracy of specific components so users can assess the reliability of their geospatial data.

The New Zealand Geodetic Datum 2000 (NZGD2000) is our official geodetic datum, used to define positions in New Zealand and its offshore islands.

New Zealand Geodetic Datum 1949 (NZGD1949) was previously used to define positions on the New Zealand mainland. New Zealand Geodetic Datum 2000 (NZGD2000) superseded NZGD1949 and is now the official datum.

Example transformations for each of the projections used in New Zealand.

How the Public Works Act 1981 operates, your entitlements under this legislation, and our role in administering the Act.

Find publications and regulatory documents from the Valuer-General and the Valuers Registration Board.

Councils can propose to change the name of their district or region. When the name of a district or region is changed, it also changes the legal name of its council.

Find the period over which tidal observations were analysed to produce our tide predictions.

How to calculate the times and heights of and between high and low waters.

Unusually high or low barometric pressure, or prolonged periods of strong winds, can mean the actual sea level is higher or lower than the predicted height.

Until quite recently the use of float gauges was the most common method of measuring and recording sea levels.

New Zealand and Australia have rights over areas of ocean called their Exclusive Economic Zones (EEZ).

This page lists the transformation factors that are used in the 3-parameter and 7-parameter similarity transformations between New Zealand Geodetic Datum 1949 (NZGD1949) and New Zealand Geodetic Datum 2000 (NZGD2000).

The transformation grid method can be used to change horizontal coordinates between New Zealand Geodetic Datum 1949 (NZGD1949) and New Zealand Geodetic Datum 2000 (NZGD2000).

The mathematical equations used to convert coordinates between vertical datums.

Three different datum transformation methods can be used for transformation between NZGD1949 and NZGD2000.

Chatham Islands Geodetic Datum 1979 (CIGD1979) coordinates can be converted to New Zealand Geodetic Datum 2000 (NZGD2000) using a 7-parameter similarity transformation.

How to prepare and start using Web Search in new Landonline.

If you’re not an existing New Landonline or Legacy Landonline user, you need to be set up as a new user before you can use Landonline Web Search.

A glossary of terms and acronyms that relate to New Zealand's land survey and registration system.

Selected workshops hosted by Toitū Te Whenua, relating to geodesy in New Zealand.

Practical guidance for firms wishing to settle when there is a Landonline system outage.

Download New Zealand’s maritime boundaries

Find out why and how to consult with Māori when making a place name proposal.

Information for landowners wanting to register land transactions themselves, withhold or restrict access to land records, and learn more about a notice they have received about their land.

Available hours, fees and how to access Land Record Search to order land records.

How to use the map in Land Record Search to find and order titles, surveys and other records.

How to buy a title in Land Record Search.