Great Sand Dunes DEM
Version 1.0, July 3, 2020
Prepared by Tom Patterson, US NPS (retired)
Size (height samples)
5,300 x 5,300
UTM / NAD83
USGS 3D Elevation Program (3DEP).
Data processing occurred in Natural Scene Designer Pro and QGIS software and involved converting between NSD, ASCII Grid, and TIF formats. We transformed the DEM from the Geographic to the UTM projection in Natural Scene Designer Pro using bicubic interpolation. No downsampling or filtering was applied.
An east-west data seam exists at 37.750106N. A north-south data seam exists at 105.4998254W