LINZ Geodetic database

15 February 2018 - New Geodetic App Version

A new version of the Geodetic Marks App is available for Apple mobile devices. An Android version is also available. This new version includes several major enhancements.

Orthometric Height Discrepancy - Update Complete

The NZGD2000 Kaikoura deformation model update included a correction for both ellipsoidal and orthometric heights. The NZGD2000 ellipsoidal heights were then further updated using the results of a least squares adjustment. This led to a discrepancy between orthometric heights in the database and orthometric heights calculated from the NZGD2000 ellipsoidal heights.

The NZVD2016 heights have now been updated.

Local vertical datum heights have not been updated, but new transformation grids will be published, in the next couple of months, to better reflect the new relationship between NZGD2000 and the local vertical datums.

To be notified of future updates sign up to 'Geodetic Database' updates on our mailing list: LINZ Geodetic Notifications

NZGD2000 Kaikoura deformation model update

NZGD2000 version 20171201 was released on 14 January 2018 and PositioNZ-RT coordinates were updated on 23 January 2018.

For more information on this update see the LINZ website

The Geodetic Database can be used to search for and download information about 127724 geodetic marks in New Zealand, the Chatham Islands, and Antarctica.

The database can be accessed by searching on a map or by using a text only version. The geodetic database is also available on Apple mobile devices. The Android geodetic mark app is currently under redevelopment to be compatible with modern Android operating systems. It is expected to be released in early 2017.