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    • Tongass Landslide Initiation (Feature Layer)

    Metadata Updated: April 1, 2026

    This is the point feature class for the once-over landslide inventory of the Tongass National Forest. Most of the landslide polygons were digitized on the 1998 to 2010 orthophotos in GIS. Many of them were age bracketed using air photos back to the 1929 Navy Trimegon photos. It includes both field and photo interpreted landslides. This point layer represents initiation points for debris avalanches, debris torrents, combination-debris avalanches/torrents, slumps, rock fall initiated failures, and rotational failures. There is an accompanying polygon feature class (Tongass_Landslide_Areas), which represents all mass wasting features, including talus slopes, snow avalanche fields, and snow avalanche chutes. Metadata

    Access & Use Information

    Public: This dataset is intended for public access and use. License: Creative Commons Attribution

    Downloads & Resources

    Dates

    Metadata Created Date November 3, 2022
    Metadata Updated Date April 1, 2026

    Metadata Source

    Harvested from USDA JSON

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date November 3, 2022
    Metadata Updated Date April 1, 2026
    Publisher U.S. Forest Service
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=a91760a48d4949b1acb6400c2f872b94&sublayer=0
    Data First Published 2019-09-16
    Data Last Modified 2022-08-29
    Category geospatial
    Public Access Level public
    Bureau Code 005:96
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    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 ebd6554e-4eca-43c0-8888-972290dcbac5
    Harvest Source Id d3fafa34-0cb9-48f1-ab1d-5b5fdc783806
    Harvest Source Title USDA JSON
    Homepage URL https://data-usfs.hub.arcgis.com/datasets/usfs::tongass-landslide-initiation-feature-layer
    License https://creativecommons.org/licenses/by/4.0/
    Metadata Type geospatial
    Old Spatial -139.6480,54.5650,-129.5165,60.1165
    Program Code 005:059
    Progresscode onGoing
    Source Datajson Identifier True
    Source Hash c9fff86b99808a44c5e946842b973a40a1ebbef6724404b41ba9b7b03347af99
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -139.6480, 54.5650, -139.6480, 60.1165, -129.5165, 60.1165, -129.5165, 54.5650, -139.6480, 54.5650}

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