Tongass Landslide Initiation (Feature Layer)

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

Data and Resources

Field Value
accessLevel public
bureauCode {005:96}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier https://data-usfs.hub.arcgis.com/maps/usfs::tongass-landslide-initiation-feature-layer
issued 2019-09-16
landingPage https://data-usfs.hub.arcgis.com/maps/usfs::tongass-landslide-initiation-feature-layer
license https://creativecommons.org/licenses/by/4.0/
metadata_type geospatial
modified 2021-11-26
old-spatial -139.6280,54.6717,-130.0200,59.9909
programCode {005:059}
publisher U.S. Forest Service
resource-type Dataset
source_datajson_identifier true
source_hash 89b9bcaccba2c78b2ea8bb1347cadcf13062db2a
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-139.6280, 54.6717], [-139.6280, 59.9909], [-130.0200, 59.9909], [-130.0200, 54.6717], [-139.6280, 54.6717]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • avalanche
  • ckan
  • geo
  • geoss
  • landslides
  • mass-wasting
  • national
  • north-america
  • open-data
  • tongass-national-forest
  • united-states
isopen True
license_id cc-by
license_title Creative Commons Attribution
license_url http://www.opendefinition.org/licenses/cc-by
maintainer USFSEnterpriseContent
maintainer_email SM.FS.data@usda.gov
metadata_created 2025-11-22T20:17:30.054726
metadata_modified 2025-11-22T20:17:30.054729
notes 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. <a href='https://data.fs.usda.gov/geodata/edw/datasets.php?xmlKeyword=tongass' target='_blank'>Metadata</a>
num_resources 6
num_tags 13
title Tongass Landslide Initiation (Feature Layer)