matt on 09 Jul, 2018 02:31 AM
Right now I only have elevation data for the US and parts of Canada, obtained from those governments directly. I'm looking into expanding that coverage using a global datasource like SRTM or ASTER, but the resolution of that would be significantly worse.
However, it looks like New Zealand now provides its own digital elevation model (DEM) data for free online. I don't know what resolution it will have, but it looks promising. Not something I'll be able to add in time for your current winter season though.