A new topobathymetric lidar dataset for the Potomac River from the #USGS 3D Elevation Program (3DEP) is available for download. Uses: estimating concentrations of contaminant plumes; engineering for bridges and roads; mapping aquatic habitats for biological assessments; and flood mapping.
https://www.usgs.gov/news/technical-announcement/new-usgs-national-map-data-reveals-potomac-rivers-submerged-topography