Topographical mapping is available in vector form from the NZTopo database. This data is used to create the NZMS 260 1:50,000 map series.
The data is available in 1Spatials’ LAMPS2 format. It is likely that it will be more convenient to obtain the data from a third-party in a more conventional GIS format. Small amounts of data may be downloaded immediately in Arc Shape format using the NZTopoOnline web mapping