OpenTopography API

Access global and regional topographic raster datasets including SRTM, ALOS World 3D, NASADEM, Copernicus DSM, USGS 3DEP DEMs (1m, 10m, 30m), and bathymetry products. Provides programmatic retrieval of digital elevation models for analysis, visualization, and downstream geospatial workflows. Quotas vary by dataset; the 1m USGS DEM is restricted to academic users.