Catalog - Data.gov

#1 Federal

Survey lines of the sidescan sonar system of data collected in Boston Harbor and Approaches (surveylines_sss)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

These data are the trackline from the high-resolution acoustic backscatter measurements of the seafloor from Boston Harbor and the harbor approaches, Massachusetts. Approximately 170 km² of...

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Search relevance: 1.00 | Views last month: 14 | Catalog Last Checked: August 01, 2026 at 05:31 AM

#2 Federal

U.S. Geological Survey East Coast Sediment Texture Database (2014, ECSTDB2014.SHP)

Organization: Department of the Interior
Dataset Last Updated: November 16, 2021 at 12:00 AM

This sediment database contains location, description, and texture of samples taken by numerous marine sampling programs. Most of the samples are from the Atlantic Continental Margin of the...

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xml

Search relevance: 1.00 | Views last month: 13 | Catalog Last Checked: August 01, 2026 at 04:21 AM

#3 Federal

30-m Topography and bathymetry grid produced from swath interferometric, multibeam, and lidar datasets (navd_bath_30m Esri binary grid, UTM Zone 19N, WGS84)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

These data are qualitatively derived interpretive polygon shapefiles and selected source raster data defining surficial geology, sediment type and distribution, and physiographic zones of the sea...

xml
xml

Search relevance: 1.00 | Views last month: 11 | Catalog Last Checked: August 01, 2026 at 04:10 AM

#4 Federal

Sediment Texture Units of the Sea Floor from Nahant to Northern Cape Cod Bay, Massachusetts (NAH_CCB_sedcover polygon shapefile, Geographic, WGS84)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

These data are qualitatively derived interpretive polygon shapefiles and selected source raster data defining surficial geology, sediment type and distribution, and physiographic zones of the sea...

xml
xml

Search relevance: 1.00 | Views last month: 11 | Catalog Last Checked: August 01, 2026 at 06:05 AM

#5 Federal

Multibeam Bathymetry 2 meter/pixel of Boston Harbor and Approaches (bh_2mmbbath)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

These data are high-resolution bathymetric measurements of the seafloor from Boston Harbor and the harbor approaches, Massachusetts. Approximately 170 km² of sidescan sonar and bathymetric data...

xml
xml

Search relevance: 1.00 | Views last month: 10 | Catalog Last Checked: August 01, 2026 at 03:26 AM

#6 Federal

Hillshade of Multibeam Bathymetry 2 meter/pixel of Boston Harbor and Approaches (bh_2mmbhsf)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

These data are high-resolution bathymetric measurements of the seafloor from Boston Harbor and the harbor approaches, Massachusetts. Approximately 170 km² of sidescan sonar and bathymetric data...

xml
xml

Search relevance: 1.00 | Views last month: 10 | Catalog Last Checked: August 01, 2026 at 05:12 AM

#7 Federal

Digital Shoreline Analysis System version 4.3 transects and long-term linear regression shoreline change statistics for all data available in the North Shore coastal region from North Salisbury at the New Hampshire border to the to the west side of Deer Island in Boston Harbor (NorthShore_transects_rates_LTw.shp)

Organization: Department of the Interior
Dataset Last Updated: November 16, 2021 at 12:00 AM

Due to continued coastal population growth and increased threats of erosion, current data on trends and rates of shoreline movement are required to inform shoreline and floodplain management. The...

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xml

Search relevance: 1.00 | Views last month: 9 | Catalog Last Checked: August 01, 2026 at 03:03 AM

#8 Federal

Massachusetts Bay and adjacent land: Polygon boundaries for source data of a continuous bathymetry and topography terrain model of the Massachusetts coastal zone and continental shelf: (Esri polygon shapefile, Geographic, NAD 83).

Organization: Department of the Interior
Dataset Last Updated: March 19, 2024 at 12:00 AM

Integrated terrain models covering 16,357 square kilometers of the Massachusetts coastal zone and offshore waters were built to provide a continuous elevation and bathymetry terrain model for...

xml
xml

Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: August 01, 2026 at 03:51 AM

#9 Federal

Isochron of Holocene marine (Qmn and Qmd) sediment thickness on the Massachusetts inner continental shelf between Nahant and Northern Cape Cod Bay (qmiso Esri binary grid; UTM, Zone 19N, WGS 84)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

These data are qualitatively derived interpretive polygon shapefiles and selected source raster data defining surficial geology, sediment type and distribution, and physiographic zones of the sea...

xml
xml

Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: August 01, 2026 at 03:33 AM

#10 Federal

Massachusetts Water Resources Administration Sediment Data for Boston Harbor and Massachusetts Bay acquired in 1993 - 1995 (MWRA shapefile)

Organization: Department of the Interior
Dataset Last Updated: November 16, 2021 at 12:00 AM

The samples in this dataset were collected and analyzed under the direction of the Massachusetts Water Resources Administration. The data were generated to study the effects of the Boston sewage...

xml
xml

Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: August 01, 2026 at 04:43 AM

#11 Federal

10-m backscatter mosaic produced from backscatter intensity data from sidescan sonar and multibeam datasets (BS_composite_10m.tif GeoTIFF Image; UTM, Zone 19N, WGS 84)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

These data are qualitatively derived interpretive polygon shapefiles and selected source raster data defining surficial geology, sediment type and distribution, and physiographic zones of the sea...

xml
xml

Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: August 01, 2026 at 05:56 AM

#12 Federal

Hillshaded relief image derived from elevations of the late-Wisconsinan regressive unconformity beneath the Massachusetts inner continental shelf between Nahant and Northern Cape Cod Bay (Urelevhs GeoTIFF Image; UTM, Zone 19N, WGS 84)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

These data are qualitatively derived interpretive polygon shapefiles and selected source raster data defining surficial geology, sediment type and distribution, and physiographic zones of the sea...

xml
xml

Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: August 01, 2026 at 04:33 AM

#13 Federal

Defined Map Units of the seafloor of Boston Harbor and Approaches (BOTTOMTYPE, UTM 19, WGS84)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

This data is a qualitatively-derived interpretative polygon shapefile defining the bottom types of the seafloor from Boston Harbor and the harbor approaches, Massachusetts. Approximately 170 km...

xml
xml

Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: August 01, 2026 at 03:54 AM

#14 Federal

Backscatter Imagery from Sidescan Sonar 5 meter/pixel of Boston Harbor and Approaches (bh_5mBS.tif)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

These data are high-resolution acoustic backscatter measurements of the seafloor from Boston Harbor and the harbor approaches, Massachusetts. Approximately 170 km² of sidescan sonar data were...

xml
xml

Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: August 01, 2026 at 05:39 AM

#15 Federal

U.S. Geological Survey Oceanographic Time-Series Data Collection of measurements of current velocity, temperature, pressure and other data made in U.S. coastal waters between 1975 and present

Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Dataset Last Updated: October 15, 2021 at 12:00 AM

This collection includes time-series oceanographic data collected by U.S. Geological Survey investigators and collaborators as part of experiments to study circulation and sediment transport in...

Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: August 03, 2026 at 08:18 AM

#16 Federal

Drumlin bluff erosion field measurements, retreat rate calculations, and SWAN wave model results, Boston Harbor Islands, Massachusetts, 1995-04-01 to 2021-08-04 (NCEI Accession 0301689)

Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Dataset Last Updated: February 13, 2025 at 12:00 AM

The data set consists of a combination of field, satellite, GIS, and simulated wave data (SWAN) for the purpose of calculating retreat rates and evaluating erosion potential on exposed bluffs on...

Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: August 03, 2026 at 04:55 AM

#17 Federal

Elevation of the late-Wisconsinan regressive unconformity beneath the Massachusetts inner continental shelf between Nahant and Northern Cape Cod Bay (urelev Esri binary grid; UTM, Zone 19N, WGS 84)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

These data are qualitatively derived interpretive polygon shapefiles and selected source raster data defining surficial geology, sediment type and distribution, and physiographic zones of the sea...

xml
xml

Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 01, 2026 at 03:57 AM

#18 Federal

National Status and Trends: Bioeffects Assessment Program Sites (1986 to present) Compiled from NOAA's National Centers for Coastal Ocean Science

Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Dataset Last Updated: May 03, 2002 at 12:00 AM

This dataset contains sample collection location information for the National Status and Trends, Bioeffects Assessment Project. The Bioeffects Assessment Sites data files report information...

Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 02, 2026 at 05:04 PM

#19 Federal

Interpretation of sea-floor geologic units on the Massachusetts inner continental shelf between Nahant and Northern Cape Cod Bay (Nahant_CCB_surfgeol polygon shapefile; Geographic WGS 84)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

These data are qualitatively derived interpretive polygon shapefiles and selected source raster data defining surficial geology, sediment type and distribution, and physiographic zones of the sea...

xml
xml

Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 01, 2026 at 05:10 AM

#20 Federal

Hillshaded relief image derived from elevations of the Holocene transgressive unconformity beneath the Massachusetts inner continental shelf between Nahant and Northern Cape Cod Bay (Utelevhs GeoTIFF Image; UTM, Zone 19N, WGS 84)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

These data are qualitatively derived interpretive polygon shapefiles and selected source raster data defining surficial geology, sediment type and distribution, and physiographic zones of the sea...

xml
xml

Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 01, 2026 at 04:36 AM

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Survey lines of the sidescan sonar system of data collected in Boston Harbor and Approaches (surveylines_sss)

U.S. Geological Survey East Coast Sediment Texture Database (2014, ECSTDB2014.SHP)

30-m Topography and bathymetry grid produced from swath interferometric, multibeam, and lidar datasets (navd_bath_30m Esri binary grid, UTM Zone 19N, WGS84)

Sediment Texture Units of the Sea Floor from Nahant to Northern Cape Cod Bay, Massachusetts (NAH_CCB_sedcover polygon shapefile, Geographic, WGS84)

Multibeam Bathymetry 2 meter/pixel of Boston Harbor and Approaches (bh_2mmbbath)

Hillshade of Multibeam Bathymetry 2 meter/pixel of Boston Harbor and Approaches (bh_2mmbhsf)

Massachusetts Bay and adjacent land: Polygon boundaries for source data of a continuous bathymetry and topography terrain model of the Massachusetts coastal zone and continental shelf: (Esri polygon shapefile, Geographic, NAD 83).

Isochron of Holocene marine (Qmn and Qmd) sediment thickness on the Massachusetts inner continental shelf between Nahant and Northern Cape Cod Bay (qmiso Esri binary grid; UTM, Zone 19N, WGS 84)

Massachusetts Water Resources Administration Sediment Data for Boston Harbor and Massachusetts Bay acquired in 1993 - 1995 (MWRA shapefile)

10-m backscatter mosaic produced from backscatter intensity data from sidescan sonar and multibeam datasets (BS_composite_10m.tif GeoTIFF Image; UTM, Zone 19N, WGS 84)

Hillshaded relief image derived from elevations of the late-Wisconsinan regressive unconformity beneath the Massachusetts inner continental shelf between Nahant and Northern Cape Cod Bay (Urelevhs GeoTIFF Image; UTM, Zone 19N, WGS 84)

Defined Map Units of the seafloor of Boston Harbor and Approaches (BOTTOMTYPE, UTM 19, WGS84)

Backscatter Imagery from Sidescan Sonar 5 meter/pixel of Boston Harbor and Approaches (bh_5mBS.tif)

U.S. Geological Survey Oceanographic Time-Series Data Collection of measurements of current velocity, temperature, pressure and other data made in U.S. coastal waters between 1975 and present

Drumlin bluff erosion field measurements, retreat rate calculations, and SWAN wave model results, Boston Harbor Islands, Massachusetts, 1995-04-01 to 2021-08-04 (NCEI Accession 0301689)

Elevation of the late-Wisconsinan regressive unconformity beneath the Massachusetts inner continental shelf between Nahant and Northern Cape Cod Bay (urelev Esri binary grid; UTM, Zone 19N, WGS 84)

National Status and Trends: Bioeffects Assessment Program Sites (1986 to present) Compiled from NOAA's National Centers for Coastal Ocean Science

Interpretation of sea-floor geologic units on the Massachusetts inner continental shelf between Nahant and Northern Cape Cod Bay (Nahant_CCB_surfgeol polygon shapefile; Geographic WGS 84)

Hillshaded relief image derived from elevations of the Holocene transgressive unconformity beneath the Massachusetts inner continental shelf between Nahant and Northern Cape Cod Bay (Utelevhs GeoTIFF Image; UTM, Zone 19N, WGS 84)