This dataset contains multibeam bathymetry, uncertainty, and backscatter, and LiDAR bathymetry andreflectance. These GeoTiffs with 1x1 meter cell size represent water depth and acoustic intensity of the seafloor from the Phase II Long Island Sound Benthic Habitat Priority Areas of Interest in the Long Island Sound. These datasets were surveyed by NOAA Ship Nancy Foster R-352, NOAA Ship Thomas Jefferson, and the Navigation Response Team using 400 khz Reson 7125 multibeam sonars in coordination with the NOAA Biogeography Branch and the Integrated Ocean and Coastal Mapping Branch. The multibeam and LiDAR were corrected, calibrated, and integrated into a seamless 32-bit raster using CARIS and ArcG Backscatter data was collected and mosaicked into a raster using Fledermaus Geocoder Toolbox, ArcGIS 10.4, and PCI Geomatica 2016 software at the Biogeography Branch by NOAA contractors.