Latest release note
Since September 2012, Toitū Te Whenua has been providing documents detailing changes to data format such as Schema Changes.
Our latest release note for the Topo50 can be viewed at:
September 2024 Topo50 release notes
To view our previous release notes, contact the Topo team at customersupport@linz.govt.nz
Topo50 map sheet updates
Topo50 map sheets are updated based on many criteria including the availability of new aerial imagery, significant change in the topography and when the sheet was last updated.
Updates since 2003
Since June 2003, map sheets have been updated according to the Topo50 map extents. To find out when a particular sheet was last updated, check the “available since” column of the “Topo50 Sheet History” spreadsheet (attached below).
Updates before 2003
Before June 2003, map sheets were updated according to the NZMS260 map extents. This document (attached below) compares the NZMS260 map sheets and when they were updated with the map sheets for Topo50, by overlaying the extents for the two series.