Apologies for posting this in more than one place, but just a quick note for those that have downloaded by recent Grand Canyon and Glacier N.P. terrain sets....
I'm in the process of updating my DEM data so if download time is a problem for you then I suggest waiting a bit. I'm going to replace as much SRTM data as my RAM will allow with 1/3" NED from USGS. I'll also release a set of images for use in creating additional masks for each of my terrain sets.
- GlobalMapper Slope shader (for lakes and rivers)
- NLCD 2001 Landcover
- NLCD 2001 Canopy
The last two look really useful for creating masks for different vegetation cover (esp. farms) and tree distributions and are indexed colour
They're only 30m resolution then these are also big terrains.