Access U.S. Geological Survey 3DEP raster datasets including 1m, 1/3arc-second (10m), 1 arc-second (30m) Digital Elevation Model. Note: 1m DEMis currently restricted to academic users. Requests are limited to 225,000km for USGS30m, 25,000 km for USGS10m, 250 km for USGS1m data. This APIservice relies on the USGS National Map.