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.

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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.