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• Modernising height data

  The New Zealand Vertical Datum 2016 provides a nationally consistent height reference surface. This is an important tool for planning, consenting, and infrastructure works.
  Guidance

  • Geodetic

• Equations for vertical datum transformations

  The mathematical equations used to convert coordinates between vertical datums.
  Guidance

  • Geodetic

• Geodetic system

  Specifications and standards used by geodetic service contractors to enhance and maintain New Zealand's geodetic network.
  Landing page

  • Geodetic

• Coordinate systems used in New Zealand

  We support mapping, surveying, and the use of spatial data by providing coordinate systems for New Zealand and our offshore islands, the Chatham Islands and Antarctica.
  Guidance

  • Geodetic

• Geospatial Capability Committee

  Vision, goals and membership details of the Geospatial Capability Committee (GCC).
  Page

  • Geodetic

• New Zealand Geodetic Datum 1949 (NZGD1949)

  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 New Zealand Geodetic Datum 2000 (NZGD2000) superseded NZGD1949 and is now the official datum.
  Guidance

  • Geodetic

• Coordinate and height accuracy

  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.
  Guidance

  • Geodetic

• Geodetic

  Geodesy is the science of measuring and understanding the Earth’s shape, orientation and gravity field. Toitū Te Whenua provides products and services used to measure and understand Aotearoa New Zealand’s dynamic environment.
  Landing page

  • Geodetic

• Geoid transformation grids

  Geoid transformation grids are used to convert heights between coordinate systems, such from the historic Local Vertical Datums (LVD) to New Zealand Geodetic Datum 2000 (NZGD2000). This page includes links to geoid transformation grids used in New Zealand.
  Page

  • Geodetic

• Transformations from CIGD1979 to NZGD2000

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

  • Geodetic

• Geodetic datum transformation examples (NZGD1949 to NZGD2000)

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

  • Geodetic

• Projection transformation example points

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

  • Geodetic

• New Zealand Vertical Datum 2016 (NZVD2016)

  New Zealand Vertical Datum 2016 (NZVD2016) is the official vertical datum. It is used to define heights in New Zealand and its offshore islands.
  Guidance

  • Geodetic

• New Zealand Transverse Mercator 2000 (NZTM2000)

  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.
  Guidance

  • Geodetic

• ​Geospatial for schools

  Understanding the value of location and how the use of location information can benefit the world and the people in it needs to start at an early age.
  Page

  • Geodetic

• Services disclaimer

  The Southern Positioning Augmentation Network (SouthPAN) is a satellite-based augmentation system that provides positioning and navigation services for users in Australia and New Zealand.
  Page

  • Geodetic

• Tristan McHardie - Geospatial careers profile

  Tristan McHardie is a GIS Administrator at Waikato Regional Council.
  Page

  • Geodetic

• Nikora Warren Heitia - Geospatial careers profile

  Nikora Warren Heitia is a Senior Treaty Partnerships Advisor at the Department of Conservation.
  Page

  • Geodetic

• Tania Te Hira - Geospatial careers profile

  Tania is a is a Geospatial Specialist with Haanuiorangi Te Whare Tapu o Ngāpuhi.
  Page

  • Geodetic

• Josef Beautrais - Geospatial careers profile

  Josef Beautrais is a Systems Modeller employed at AgResearch.
  Page

  • Geodetic

• Apply the adjustment using ogr2ogr

  The following process is for applying the adjustment using ogr2ogr.
  Guidance

  • Survey
  • Geodetic

• Kaikoura earthquake coordinate update

  Geodetic Mark Coordinate Update - 1 December 2018.
  Guidance

  • Survey
  • Geodetic

• The National Geodetic Adjustment

  The National Geodetic Adjustment (NGA) provides a nationally consistent set of NZGD2000 coordinates and NZVD2016 heights for geodetic marks.
  Page

  • Geodetic

• Sam Williamson - Geospatial careers profile

  Sam is a Geospatial Specialist at Fulton Hogan.
  Page

  • Geodetic

• Mat Darling - Geospatial careers profile

  Mat Darling is a Geospatial Development Leader for Pattle Delamore Partners.
  Page

  • Geodetic

• SBAS proposal to authorise joint Ministers to draw down the tagged contingency

  Improved satellite based positioning to grow an innovative, safe and efficient New Zealand
  Resource

  • Geodetic

• Airborne Gravimetry: A Status Report

  This paper gives a status report on collecting gravity data by airborne methods, looking particularly at issues such as techniques, data densities, accuracies, and costs. The overall goal is one of assessing the applicability of this technique to the New…
  Resource

  • Geodetic

• A Conformal Mapping Projection with Minimum Scale Error

  The following document is a scanned image of a paper published in Survey Review XXII, 168, April 1973. It is published here with the permission of Dr. Ian Reilly and describes the theory and methodology behind the development of the New Zealand Map Grid.
  Resource

  • Geodetic

• Geodetic specifications and guidelines

  Find specifications, templates and guidelines for submitting geodetic data to Toitū Te Whenua.
  Guidance

  • Geodetic

• NZGD2000: A semi-dynamic datum

  New Zealand Geodetic Datum (NZGD2000) is a semi-dynamic datum. This means that the effects of plate tectonics are considered as part of the processes and frameworks when determining a coordinate for a position. However, the impact might not be immediately…
  Guidance

  • Geodetic

• Convergence, scale factors and declination

  When coordinates are transformed from a curved surface to a flat map, some of the accuracy in the coordinate is lost because all projections have some degree of distortion. Convergence, scale factors and declination can reduce the distortion and give a…
  Guidance

  • Geodetic

• Chatham Islands Geodetic Datum 1971 (CIGD1971)

  Chatham Islands Geodetic Datum 1971 (CIGD1971) was previously used to define positions on the Chatham Islands. It was replaced in 1981 by Chatham Islands Geodetic Datum 1979 (CIGD1979), and both were superseded by New Zealand Geodetic Datum 2000 (NZGD2000…
  Guidance

  • Geodetic