DEM accuracy in Africa?

[Ali_B]

Hi

How accurate is the DEM data that Topofusion uses when I click "Correct Elevation using DEM"? What is the source?
I have a trail run track in Cape Town, South Africa and from what I can figure out, the most accurate free DEM data for Africa is the SRTM1 30m data that can be downloaded from the USGS website.

Is this a similar sort of elevation accuracy that the same track would get from some websites that use the Google elevation api to source DEM data?

Thanks!
Alistair

[ScottMorris]

Hi Alistair,

Thanks for the post.  The source for TF is the same SRTM1 30m data available from the USGS.  It's the best free source I know of for outside the US.

I am not sure if google's elevation service is any better for SA or not.

Hope that helps.