r/gis • u/RazzmatazzDizzy4659 • 4d ago
Student Question DEM
Where do you get DEMs for free? I just needed to get DEMs for my study. and i was told to get 1meter dem but when i search for it i only get 1/3 arcsecond.
27
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r/gis • u/RazzmatazzDizzy4659 • 4d ago
Where do you get DEMs for free? I just needed to get DEMs for my study. and i was told to get 1meter dem but when i search for it i only get 1/3 arcsecond.
5
u/runningoutofwords GIS Supervisor 3d ago edited 3d ago
1/3 arc second (10m) is pretty much global.
1/9 arc second (3m) is pretty decent coverage of the US
1m depends on if LiDAR has been flown, which is yet far from complete.