The Topo50 map series provides topographic mapping for the New Zealand mainland, Chatham Islands, offshore islands, and offshore dependancies at 1:50,000 (some of the islands at 1:25,000) scale. For some small islands the printed map scale is 1:25,000. Although presented at 1:25,000 this layer, for all intents and purposes, forms part of the Topo50 map series.
Along with the paper-based Topo50 map series, digital images of the maps are also publicly available.
Georeferenced raster digital images are provided at a resolution of 300 DPI. Georeferencing allows adjacent maps to be accurately and automatically aligned within GIS systems.
For more information, and a description of the georeferencing keys: http://www.linz.govt.nz/topography/topo-maps/topo50/digital-images
Please be aware of the following:
- The existence of a road or track does not necessarily indicate public right of access.
- The Ministry of Infrastructure and Planning, Rarotonga, should be contacted for the latest information on tracks and huts.
- Not all aerial wires, cableways and obstructions that could be hazardous to aircraft are held in the data.
- Contours and spot elevations in vegetation areas may be less accurate.
- Not all pipelines including both underground and above ground are held in the data or shown on the printed maps. For the latest information please contact the utility and infrastructure agencies
-Permits may be required to visit some sensitive and special areas. Contact the Ministry of Infrastructure and Planning, Rarotonga, to see if you need to apply for a permit..
LINZ and our predecessors have been responsible for national topographic mapping in New Zealand and it's offshore dependancies for more than a hundred years.
The raw data for the Pacific Islands of Tokelau, Niue and the Cook Islands was created by photogrammetrists who in the 1970's and 80's mapped the islands from overlapping pairs of aerial photographs. Cartographers then took the data and added symbols and text, and created the colour separations needed to produce printed maps (the NZMS272 series)
In 2013 and 2014 LINZ used 2009 satellite imagery, information from the Ministry of Infrastructure and Planning, Rarotonga, and local knowledge to update the data for the Cook Islands. Printed maps (in hardcopy and digital form) are also available.