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    • 30-m Topographic Wetness Index

    Metadata Updated: January 14, 2026

    The lidar Topographic Wetness Index (TWI) is the TWI data product produced and distributed by the National Park Service, Great Smoky Mountains National Park. Concave, low gradient areas will gather water (low TWI values), whereas steep, convex areas will shed water (high TWI values). Values range range from less than 1 (dry cells) to greater than 20 (wet cells).

    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 January 14, 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 January 14, 2026
    Publisher National Park Service
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/NPS_DataStore_2208650
    Data First Published 2014-03-17T00:00:00Z
    Data Last Modified 2014-03-17T00:00:00Z
    Category Raster Dataset
    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 966b3bd3-4793-4c57-8992-c4f907e8f04e
    Harvest Source Id d917c1a9-26b7-43ea-b8c5-c77ec750a850
    Harvest Source Title DOI NPS DCAT-US
    Homepage URL https://irma.nps.gov/DataStore/Reference/Profile/2208650
    Old Spatial -84.02396,35.4183655,-82.99266,35.84451
    Program Code 010:118, 010:119
    Source Datajson Identifier True
    Source Hash e7d631985776a00d26463c541a16e12d598974994564e1a60e85bbf6bbd283ba
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -84.02396, 35.4183655, -84.02396, 35.84451, -82.99266, 35.84451, -82.99266, 35.4183655, -84.02396, 35.4183655}

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