USGS Data

Data explorer, lidar and DEMs:  https://prd-tnm.s3.amazonaws.com/LidarExplorer/index.html#/

Lidar base spec: https://www.usgs.gov/core-science-systems/ngp/ss/lidar-base-specification-online

Lidar error dictionary: https://www.usgs.gov/core-science-systems/ngp/ss/lidar-error-dictionary

 Online DEM product viewer:    https://apps.nationalmap.gov/3depdem/

National Map directions

Earth Explorer directions

Last revision 6/15/2021