The Topo50 map series provides topographic mapping for the New Zealand mainland and Chatham Islands at 1:50,000 scale and replaces the NZMS260 series.
Topo50 is the official topographic map series used by New Zealand emergency services. Topo50 maps use the New Zealand Geodetic Datum 2000 (NZGD2000) and the New Zealand Transverse Mercator 2000 (NZTM2000) projection. For the Chatham Islands map sheets, the Chatham Islands Transverse Mercator 2000 (CITM2000) projection is used.
Topo50 maps can also be download from Land Information New Zealand as image files (TIFF and GeoTIFF formats) and data files (Shape and IFF formats). - See more at: http://www.linz.govt.nz
Projection: The Topo50 series uses a different projection. This means that someone reading a grid reference on the NZMS260 map will give quite a different reference to someone looking at the same geographical point on the Topo50 series. Technically this is because the Topo50 series uses the New Zealand Geodetic Datum 2000 and the New Zealand Transverse Mercator 2000 projection.
This means that the point of reference for latitude and longitude and the grid coordinates of geographic features have changed. Geographic coordinates, longitude and latitude, have changed by approximately 200m, 190m in a north-south direction and 10m in an east-west direction. Grid coordinates, northings and eastings, have changed by over 550,000m in the northing and 900,000m in the easting. This difference is sufficiently large so that coordinates of the NZMS260 and Topo50 maps will not be confused.
Land Information New Zealand Topo maps are consistent in specification and cover the whole country. They are regularly updated and new editions are frequently printed. NZ Topo50 maps are commonly used by the emergency services.
No. There were 297 NZMS260 maps covering New Zealand, while there are 451 Topo50 maps. This is due to Topo50 maps being in a new format (A1 portrait).
Information on Topo50 maps and how to read them, can be found in the Topo50 Map Reading Guide produced by Land Information New Zealand. - See more at: http://www.linz.govt.nz/
When using a Topo50 map, please be aware of the following:
When doing anything in the outdoors please be aware of the outdoor safety code.