Why the Change?

Technology has moved on - and so have we

LINZ has moved from the New Zealand Geodetic Datum 1949 to the New Zealand Geodetic Datum 2000, and a new projection (New Zealand Transverse Mercator). The effect of this change is that Topo50 map coordinates (latitudes and longitudes) of points have moved about 200 metres: 190 metres in a north/south direction, and 10 metres in an east/west direction.

This change in the geodetic reference system ensures New Zealand is up to date with international mapping systems, and modern navigational technologies such as GPS. The Topo50 maps also reflect updated information collected from third parties such as the Department of Conservation (DoC) including walking tracks and huts.

Topo50 maps are available from major map and outdoor retailers as well as DoC visitor centres that have retail outlets. You can find map shops near you by using the Find a Map Retailer tool on this website.

Emergency services are using Topo50 maps

If you visit remote areas, equipping yourself with the appropriate, most up to date maps is part of the planning you need to do to manage your safety. This is the map that emergency services will be using from 23 September. If you need help, having the same map will help to make it as easy as possible for emergency services to find you. While the emergency services are still able to work from the old coordinates, it's ideal if all parties are using the same coordinates.

In addition to the safety and technology benefits, the Topo50 series includes updated information on DoC huts and tracks, and are designed to help New Zealanders find their way through remote areas with greater ease.

Usability improvements to Topo50 maps

There are some other simple changes you'll notice on the new Topo50 maps. On the back covers, you'll find a locality indicator, so you can easily see where each map sheet fits within the series. The legend key now shows links to relevant warning notes, or important information. The format has also changed to A1 portrait, making the maps more manageable.

Compatibility with GPS units

If you have a GPS system, you can update it simply by setting your GPS receiver to NZGD2000. If your GPS doesn't support that system, you can use the default datum setting of World Geodetic System 1984 (WGS84). WGS84 is practically the same as NZGD2000 and means latitudes and longitudes from your GPS receiver will be compatible with those on the Topo50 maps. You can find simple directions on how to do this here.