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    • Eel grass coverage, 2015, Cape Cod National Seashore

    Metadata Updated: March 4, 2026

    This dataset shows the eelgrass data extent identified from the acoustic surveys completed within and adjacent to the boundaries of Cape Cod National Seashore (CaCo) from Duck Harbor to Jeremy Point in Cape Cod Bay, and Wellfleet Harbor from Wellfleet to Eastham, Massachusetts, August 10 – December 12, 2015, and July 12 – September 7, 2016. Full coverage sidescan and partial coverage bathymetry data were collected using an Edgetech 6205 Phase-Measuring Sidecan Sonar. In total, 5723.8 hectares of sidescan imagery were mapped at primarily 20 – 40 meter line spacing and 50 meter swath range to allow overlap of lines and a total of 19.3 hectares were identified as Eelgrass. The minimum mapping unit for this study site for eelgrass was 100 square meters and was hand digitized from individual sidescan sonar files at a visual extent of 1:1000 m.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date January 14, 2026
    Metadata Updated Date March 4, 2026

    Metadata Source

    Harvested from DOI NPS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 14, 2026
    Metadata Updated Date March 4, 2026
    Publisher National Park Service
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/NPS_DataStore_2278519
    Data First Published 2019-03-01T00:00:00Z
    Data Last Modified 2019-03-01T00:00:00Z
    Category geospatial
    Public Access Level public
    Bureau Code 010:24
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://ddi.doi.gov/nps-data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 752a2e15-89bf-4b0e-b5cc-54755a3c1fb0
    Harvest Source Id d917c1a9-26b7-43ea-b8c5-c77ec750a850
    Harvest Source Title DOI NPS DCAT-US
    Homepage URL https://irma.nps.gov/DataStore/Reference/Profile/2278519
    Metadata Type geospatial
    Old Spatial -70.25153,41.5994949,-69.92308,42.0868835
    Program Code 010:118, 010:119
    Source Datajson Identifier True
    Source Hash 81379a5da6d739714221ae6cbd0e8226bd4436a595c0dc98660240eff079e1dd
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -70.25153, 41.5994949, -70.25153, 42.0868835, -69.92308, 42.0868835, -69.92308, 41.5994949, -70.25153, 41.5994949}
    Temporal 2015-08-10/2016-09-07

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