New Zealand Digital Elevation Model (DEM) in 1 arc-second (~30 meter) HGT/SRTM1 format.

I created this dataset back around 2010. It was intended as a resource for the PC gaming community (train, plane, ship simulators...), graphics artists, or anyone who can apply the data safely. At that time NASA had not released 1 arc-second (30 meter) SRTM data for New Zealand or for any country other than the United States. I was able to create a Digital Elevation Model (DEM) by interpolating the contour lines from the Land Information New Zealand (LINZ) topographical database. I wrote custom software to perform the calculations which took (from memory) two 6 core machines about 1 week to complete. This resulted in a grid of evenly spaced points 10 meters apart. From that base grid I interpolated the points to get the 1 arc-second HGT data. Information on the HGT (STRM1) format can be found here.

To view HGT files:

1. 3dem can be downloaded from here http://www.visualizationsoftware.com/3dem.
2. or see my HGT-Relief-Map project for code on how to create renders from the HGT files. This application was used to create the relief maps in this project (see images below). A complete set of renders of all the HGT files can be found in the images folder.

You can use the data for commerical and non-commerical purposes according to the Creative Commons Attribution 4.0 International license. You must attribute the creator in your own works which in this case would be Land Information New Zealand.

The image below is a render of the S40E175.hgt file showing Tongariro National Park.

Render of S37E175.hgt - Great Barrier and the Coromandel Peninsula (below).

Render of S39E175.hgt - Lake Taupo (below).

Render of S44E170.hgt - West Coast/Southern Alps (below).

North and South Island Map Index (below).