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    • Transects_OpenOcean.shp - Digital Shoreline Analysis System version 4.3 Transects with Linear Regression Rate Calculations for the Open Ocean coast of Dauphin Island, Alabama.

    Metadata Updated: January 20, 2026

    Rates of shoreline change for Dauphin Island, Alabama were generated for three analysis periods, using two different shoreline proxy datasets. Mean High Water line (MHW) shorelines were generated from 14 lidar datasets (1998-2014) and Wet Dry Line (WDL) shorelines were digitized from ten sets of georeferenced aerial images (1940-2015). Rates of change were generated for three groups of shorelines: MHW (lidar), WDL (aerial) and MHW and WDL shorelines combined. These data will aid in developing an understanding of the evolution of the barrier island position, size and shape as well as documenting spatially-variable patterns in erosion and accretion of different sections of the island.

    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 11, 2026
    Metadata Updated Date January 20, 2026

    Metadata Source

    Harvested from DOI USGS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 11, 2026
    Metadata Updated Date January 20, 2026
    Publisher U.S. Geological Survey
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/USGS_5ce9fe77-24c9-40ee-96c6-e9ee5b347395
    Data Last Modified 2020-10-13T00:00:00Z
    Category geospatial
    Public Access Level public
    Bureau Code 010:12
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://ddi.doi.gov/usgs-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
    Datagov Dedupe Retained 20260120105240
    Harvest Object Id a4805b72-e30c-4c64-bf03-4049b46b8b31
    Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
    Harvest Source Title DOI USGS DCAT-US
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": -88.347875, 30.222462, -88.347875, 30.287079, -88.070575, 30.287079, -88.070575, 30.222462, -88.347875, 30.222462}
    Source Datajson Identifier True
    Source Hash 357ad585b05cf6056132ea1da8a18e64d5c91c3ab1bd0af2a27723bafcfc09be
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -88.347875, 30.222462, -88.347875, 30.287079, -88.070575, 30.287079, -88.070575, 30.222462, -88.347875, 30.222462}

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