To determine continued change to the shoreface morphology and evolution at Seven Mile Island, New Jersey, scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center (USGS SPCMSC) in St. Petersburg, Florida, conducted a single-beam bathymetric survey of Seven Mile Island, New Jersey, from April 29 - May 2, 2022. During this study, single-beam bathymetry data were collected using a personal watercraft (PWC) and a floating-towed-seismic sled. Both the PWC and the seismic sled were outfitted with high precision Global Navigation Satellite System (GNSS) receivers, motion reference units, and survey grade single-beam echosounders.

As part of the restoration monitoring component of the Deepwater Horizon early restoration project, scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center (USGS SPCMSC) conducted single-beam and multibeam bathymetry surveys around Breton Island, Louisiana (LA), from August 3-5, 2022, for Field Activity Number (FAN) 2022-328-FA. The purpose of data collection was to develop a baseline digital elevation model of the seafloor around Breton Island for comparison with both previous and future elevation assessments, and to evaluate elevation change following island restoration. The survey encompassed approximately 65 square kilometers of nearshore environment including the former Mississippi River to Gulf Outlet and submerged areas of South Breton Island. The single-beam bathymetry was acquired using two 12-foot personal watercrafts (PWCs) and a 20-foot Twin Vee. All vessels were outfitted with high precision Global Navigation Satellite System (GNSS) receivers, motion reference units, and survey grade single-beam echosounders. For further information regarding data collection and/or processing, please see the metadata associated with this data release. For additional information on post-processing steps please refer to DeWitt and others (2016) and Hansen and others (2017).

Scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) conducted single-beam and multibeam bathymetry (Stalk and others, 2025) surveys around the northern Chandeleur Islands, Louisiana, from June 12 to 20 and from July 31 to August 9, 2023, as part of Field Activity Number (FAN) 2023-325-FA. The purpose of data collection was to measure submerged coastal elevations along the Chandeleur Islands, located in the Breton National Wildlife Refuge. Funded by the Extending Government Funding and Delivering Emergency Assistance Act (Public Law 117-43) enacted on September 30, 2021, these data, in combination with previous bathymetric data collected at the study area (Stalk and others, 2017; Stalk and others, 2020), can be used to quantify storm-related barrier island sediment redistribution following the 2020-2021 hurricane seasons. The survey encompassed approximately 760 square kilometers (km) of the gulf-side and sound-side nearshore environments around the northern Chandeleur Islands. The single-beam bathymetry was acquired using two 12-foot (ft) personal watercrafts and two boats (a 20-ft Twin Vee [TVEE] and a 17-ft Mako). All vessels were outfitted with high precision Global Navigation Satellite System receivers, motion reference units, and survey grade single-beam echosounders (SBES). Long Term Change (LTC) lines were collected by the TVEE as part of a comparative long term change analysis, but for this data release, LTC lines represent shore-perpendicular transects extending both offshore and soundward 3 km on either side of the island. Sub-bottom profile geophysical data were also collected during this FAN and are provided in Forde and others (2024).

Scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center (USGS - SPCMSC) in St. Petersburg, Florida, conducted a single-beam bathymetric survey of Rockaway Peninsula, New York September 27 - October 6, 2019. During this study, bathymetry data were collected aboard two personal watercraft (PWC) outfitted with single-beam echosounders, as well as a towed seismic sled with similar instrumentation.

Scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center (USGS - SPCMSC) in St. Petersburg, Florida, conducted a single-beam bathymetric survey of Rockaway Peninsula, New York September 27 - October 6, 2019. During this study, bathymetry data were collected aboard two personal watercraft (PWC) outfitted with single-beam echosounders, as well as a towed seismic sled with similar instrumentation.

The U.S. Geological Survey St. Petersburg Coastal and Marine Science Center (USGS SPCMSC) collected single beam echosounder (SBES) and differential global positioning system (DGPS) elevation data in the nearshore and beach environments of Wallops and Assawoman Islands, Virginia, in June 2024. This USGS data release includes the processed SBES and DGPS elevation point data (xyz) for Field Activity Number (FAN) 2024-310-FA. The SBES data were acquired using survey equipment mounted on personal watercrafts (PWCs) R/V Chum and R/V Shark, and the DGPS data were acquired using GPS antennas mounted on a utility terrain vehicle (UTV) or GPS backpack. Multibeam echosounder (MBES) and chirp seismic data were collected concurrently as part of FAN 2024-310-FA; those data are available as separate data releases (Forde and others, 2025; Bemelmans and others, 2025).

An Ellipsoidally Referenced Survey (ERS) using two Teledyne Reson SeaBat T50-P multibeam echosounders, in dual-head configuration, was conducted by the U.S Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) offshore of Seven Mile Island, New Jersey, September 6-8, 2018 and September 21-23, 2018. This dataset, presented as Seven_Mile_Island_2018_MBES_WGS84_UTM18N_xyz.zip and Seven_Mile_Island_2018_MBES_NAD83_NAVD88_GEOID12B_xyz.zip, includes the processed elevation point data (x,y,z), as derived from a 1-meter (m) bathymetric grid.

Scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center (USGS – SPCSMC), conducted a single-beam bathymetry survey within Point Aux Chenes Bay, Mississippi (MS), in June 2022 under the USGS Field Activity Number (FAN) 2022-320-FA. The data was collected from two personal watercrafts (PWC): research vessel (R/V) Shark (subFAN 22CCT09, WVR1) and R/V Chum (subFAN 22CCT10, WVR2). A re-survey of just the north and south subtidal reefs occurred in November 2022 (subFANs 22CCT11 and 22CCT12, respectively). Efforts were supported by the Coastal Marine Hazards Research Preogram (CMHRP) and the National Oceanic and Atmospheric Association (NOAA) Effects of Sea Level Rise (ESLR) Program in partnership with Grand Bay National Estuarine Research Reserve and Mississippi State University. The processed point data files (xyz) are released in two datums, the World Geodetic System of 1984 (WGS84 G2139) ellipsoid height referenced to the Universal Transverse Mercator (UTM) Zone 16 North (N); and the North American Datum of 1983 (NAD83 (2011)), North American Vertical Datum of 1988 (NAVD88) orthometric height with respect to GEOID12A. Additional data products include a single-beam trackline shapefile (.shp), a 10-meter (m) cell-size digital elevation model (DEM). and formal Federal Geographic Data Committee (FGDC) metadata. For consistency and comparison, the shoreline derivation method from Terrano and others (2021) utilized to derive the 2021 shoreline was replicated to derive the 2022 shoreline. Similarly, methods from Stalk and others (2021) utilized to create the 2021 10-meter DEM were replicated to create the 2022 10-m DEM included in this data release. For further information regarding data collection and/or processing methods, refer to DeWitt and others (2017) and Stalk and others (2021). For further information regarding data collection and/or processing methods, refer to DeWitt and others (2017) and Stalk and others (2021).

Scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center (USGS – SPCSMC), conducted a single-beam bathymetry survey within Point Aux Chenes Bay, Mississippi (MS), in June 2022 under the USGS Field Activity Number (FAN) 2022-320-FA. The data was collected from two personal watercrafts (PWC): research vessel (R/V) Shark (subFAN 22CCT09, WVR1) and R/V Chum (subFAN 22CCT10, WVR2). A re-survey of just the north and south subtidal reefs occurred in November 2022 (subFANs 22CCT11 and 22CCT12, respectively). Efforts were supported by the Coastal Marine Hazards Research Preogram (CMHRP) and the National Oceanic and Atmospheric Association (NOAA) Effects of Sea Level Rise (ESLR) Program in partnership with Grand Bay National Estuarine Research Reserve and Mississippi State University. The processed point data files (xyz) are released in two datums, the World Geodetic System of 1984 (WGS84 G2139) ellipsoid height referenced to the Universal Transverse Mercator (UTM) Zone 16 North (N); and the North American Datum of 1983 (NAD83 (2011)), North American Vertical Datum of 1988 (NAVD88) orthometric height with respect to GEOID12A. Additional data products include a single-beam trackline shapefile (.shp), a 10-meter (m) cell-size digital elevation model (DEM). and formal Federal Geographic Data Committee (FGDC) metadata. For consistency and comparison, the shoreline derivation method from Terrano and others (2021) utilized to derive the 2021 shoreline was replicated to derive the 2022 shoreline. Similarly, methods from Stalk and others (2021) utilized to create the 2021 10-meter DEM were replicated to create the 2022 10-m DEM included in this data release. For further information regarding data collection and/or processing methods, refer to DeWitt and others (2017) and Stalk and others (2021). For further information regarding data collection and/or processing methods, refer to DeWitt and others (2017) and Stalk and others (2021).

Scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center (USGS - SPCMSC) in St. Petersburg, Florida, conducted a single-beam bathymetric survey of Cedar Island, Virginia, August 9-15, 2019. During this study, bathymetry data were collected aboard a towed seismic sled outfitted with a single-beam echosounder.