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

    Metadata Updated: January 6, 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 and was saved as Geographic Tagged Image File Format (GeoTIFF) rasters at 1-centimeter (cm) resolution, in a 5-by-2 tile index grid. A 1-meter resolution "quicklook" version of this DEM is also included in this data release, so that users can quickly view the entire dataset at a lower resolution before downloading the higher resolution DEM.

    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 6, 2026
    Metadata Updated Date January 6, 2026

    Metadata Source

    Harvested from DOI USGS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 6, 2026
    Metadata Updated Date January 6, 2026
    Publisher U.S. Geological Survey
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/USGS_ee1f41de-712e-4086-b51e-a60fa7ca7332
    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
    Harvest Object Id 63969d12-fea3-4926-8069-02bac1fb1339
    Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
    Harvest Source Title DOI USGS DCAT-US
    Metadata Type geospatial
    Old Spatial -81.41016166, 24.54442068, -81.40065243, 24.54779751
    Source Datajson Identifier True
    Source Hash bef1ad5bb1d88b22d1a3bb5d7e3b3cdf29846ab7c1095b6fe38897804ee3ef58
    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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