Data edited (November 2019) by USGS National Geospatial Technical Operations Center (NGTOC). Data was modified from the original delivered data by the NGTOC to meet USGS specification and/or facilitate efficient data publication. Modifications may include but are not limited to: breakline enforcement, hydro-flattening of water bodies, changing point classification to resolve conspicuous errors in the DEM, removal of certain TIN artifacts, raster file format conversion, spatial reference system transformation, and conversion of GPS Week time to Adjusted GPS time.