Elevation Data Coverage

TopoMiller uses multiple elevation data sources to provide the best possible terrain detail for your CNC carvings, depending on your region and project requirements.

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US Coverage (1m-10m DEM)

Ultra-high resolution 1m-10m elevation data covering 70-80% of the United States, with coverage expanding to 100% by 2028.

1m Resolution10m ResolutionUSGS 3DEP

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Global Coverage (AW3D30)

30m resolution worldwide elevation data from ALOS World 3D, providing excellent coverage for international regions.

30m ResolutionALOS World 3DGlobal

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How TopoMiller Selects Data Sources

TopoMiller automatically selects the best available data source for your region:

USGS COG (10m) - Primary source for US regions, direct S3 access
AW3D30 (30m) - Worldwide coverage via OpenTopography API
AWS Terrain Tiles (3-10m US, 30m Global) - High-quality fallback with global coverage

Need Help? Just select your region on the Generate page and TopoMiller will automatically use the best available data for your area!