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    • Quicklook Digital Elevation Model (DEM) of Looe Key, Florida, 2022

    Metadata Updated: January 22, 2026

    A digital elevation model (DEM) was created from underwater images collected at Looe Key (LKR), Florida, in July 2022 using the SfM (Structure-from-Motion) Quantitative Underwater Imaging Device with 5 cameras (SQUID-5) system. The underwater images were processed using SfM photogrammetry techniques into a classified two-class ('unclassified' and 'low noise') 3D point cloud. The DEM was created in Metashape (ver. 1.6.6) from the point cloud and includes points from both classes. The DEM covers a rectangular area of seafloor approximately 850x160 meters (m) (0.13 square kilometers [km]) in size. This "quicklook" version of this dataset was saved as a Geographic Tagged Image File Format (GeoTIFF) raster at 1-meter resolution, so that users can quickly view the entire dataset at a lower resolution before downloading the higher resolution raster tiles. The tiled, 1-centimeter (cm) high-resolution version of the DEM is also included in this data release.

    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 22, 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 22, 2026
    Publisher U.S. Geological Survey
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/USGS_afe08aa6-3ecb-40f6-9b0d-b77e96b1664d
    Data Last Modified 2024-08-14T00:00:00Z
    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 20260122085604
    Harvest Object Id fd325f61-55b3-4834-a070-12dc78a66346
    Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
    Harvest Source Title DOI USGS DCAT-US
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": -81.41016166, 24.54442068, -81.41016166, 24.54779751, -81.40065243, 24.54779751, -81.40065243, 24.54442068, -81.41016166, 24.54442068}
    Source Datajson Identifier True
    Source Hash 6251c3cc59b655210a5c5a5cb9b3fb9322182f6f4013a8ab1ab78a449ebba877
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -81.41016166, 24.54442068, -81.41016166, 24.54779751, -81.40065243, 24.54779751, -81.40065243, 24.54442068, -81.41016166, 24.54442068}

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