Data

The Topo250 map series provides topographic mapping for the New Zealand mainland, the Chatham Islands at 1:250,000 scale.

Along with the paper-based Topo250 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:
www.linz.govt.nz/topography/topo-maps/topo250/digi...

This layer has been provided to enable potential users to identify the coverage of photography for Mainland NZ flown on behalf of the Crown between 1936 and 2005. Areas flown outside of Mainland NZ will be added later.

The layer shows the extent of each photograph taken. The 'NZ Aerial Survey Footprints 1936-2005 poly' layer shows the extent of each survey undertaken.

The Collection exists as photographic negatives (most are not in digital form) so the images are not downloadable from the LDS.

The Crown Aerial Film Negative Collection is managed for LINZ by NZ Aerial Mapping Limited.

You can are order images from the Collection from NZ Aerial Mapping Limited. in a number of formats, including:
• contact prints
• enlargements
• digital files
• precision scans for photogrammetric production
• orthophotos

You will need to tell NZ Aerial Mapping the survey, run and photo number (values in the ‘SURVEY’ 'RUN_NO' and 'PHOTO_NO' attributes) covering your area of interest.

NZ Aerial Mapping will be able to provide information about the cost of providing images in the various formats. NZ Aerial Mapping Limited contact details can be found at nzam.com/contact/

There are a small number of images held in the Collection that have not been referenced in the LDS layers due to incomplete metadata. LINZ is currently investigating ways this can be remedied. NZ Aerial Mapping will be able to let you know if additional photographs are available in your area of interest.

NZ Aerial Mapping also have large number of NZAM-copyright images that are available for public use. The extents of these may be added to the LDS in future. You can order images from NZAM’s collection by contacting them.

An imaginary line that connects points of equal height value eg the elevation of the land surface above or below a vertical datum, in this case of LINZ topographic mapping, this is Mean Sea Level.

Data Dictionary for contour: apps.linz.govt.nz/topo-data-dictionary/index.aspx?...

This layer is a component of the Topo250 map series. The Topo250 map series provides topographic mapping for the New Zealand mainland and Chatham Islands, at 1:250,000 scale.

Further information on Topo250: www.linz.govt.nz/topography/topo-maps/topo250

LINZ publishes 1:25,000 scale orthophotos of New Zealand from its archive. The New Zealand orthophotos shown are historical and no further orthophotos of New Zealand will be published.

Coverage of 1 pixel is 2.5m x 2.5m

An imaginary line that connects points of equal height value eg the elevation of the land surface above or below a vertical datum, in this case of LINZ topographic mapping, this is Mean Sea Level.

Data Dictionary for contour: apps.linz.govt.nz/topo-data-dictionary/index.aspx?... . The first contour is the 160m, then 300m, and every 300m thereafter.

This layer is a component of the Topo500 data. The Topo500 map series will, when it is created, provide updated topographic mapping for the New Zealand mainland at 1:500,000 scale.

LINZ publishes 1:25,000 scale orthophotos of New Zealand from its archive. The New Zealand orthophotos shown are historical and no further orthophotos of New Zealand will be published.

Coverage of 1 pixel is 2.5m x 2.5m

The line forming the boundary between the land and sea, defined by mean high water.

Data Dictionary for coastline: apps.linz.govt.nz/topo-data-dictionary/index.aspx?...

This layer is a component of the Topo500 data. The Topo500 map series will, when it is created, provide updated topographic mapping for the New Zealand mainland at 1:500,000 scale.

Any formed all weather route suitable for the passage of any vehicle.

Data Dictionary for road_cl: apps.linz.govt.nz/topo-data-dictionary/index.aspx?...

This layer is a component of the Topo500 data. The Topo500 map series will, when it is created, provide updated topographic mapping for the New Zealand mainland at 1:500,000 scale.

A natural, flowing body of water emptying into an ocean, lake or other body of water and usually fed along it's course by converging tributaries.

Data Dictionary for river_cl: apps.linz.govt.nz/topo-data-dictionary/index.aspx?...

This layer is a component of the Topo250 map series. The Topo250 map series provides topographic mapping for the New Zealand mainland and Chatham Islands, at 1:250,000 scale.

Further information on Topo250: www.linz.govt.nz/topography/topo-maps/topo250

Any formed all weather route suitable for the passage of any vehicle.

Data Dictionary for road_cl: apps.linz.govt.nz/topo-data-dictionary/index.aspx?...

This layer is a component of the Topo250 map series. The Topo250 map series provides topographic mapping for the New Zealand mainland and Chatham Islands, at 1:250,000 scale.

Further information on Topo250: www.linz.govt.nz/topography/topo-maps/topo250