Evidence-backed facts
- The National Map access API supports discovery and download of USGS elevation, imagery, hydrography, boundaries, structures, maps, and other geospatial products. informative
- Public product discovery does not require an account and does not grant dataset publication, survey, land-title, emergency, or map-revision authority. informative
- Clients must bind dataset, extent or geometry, date, product, format, paging, and maximum-result constraints and use returned download links and metadata rather than guessing file locations. informative
- Products have independent source dates, scales, resolutions, processing methods, and accuracy limits and do not prove property boundaries, current field conditions, navigation safety, or legal jurisdiction. informative