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://www.arcgis.com/home/item.html?id=a91760a48d4949b1acb6400c2f872b94&sublayer=0
issued 2019-09-16
landingPage https://data-usfs.hub.arcgis.com/datasets/usfs::tongass-landslide-initiation-feature-layer
license https://creativecommons.org/licenses/by/4.0/
metadata_type geospatial
modified 2022-08-29
old-spatial -139.6280,54.6717,-130.0200,59.9909
programCode {005:059}
progressCode onGoing
publisher U.S. Forest Service
resource-type Dataset
source_datajson_identifier true
source_hash eab1a2201e1804e2bab270dc762f64bd86e5e0cca79b9d9f3279fe43567d5ae9
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
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • avalanche
  • landslides
  • mass-wasting
  • open-data
  • tongass-national-forest
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 2025-09-23T22:30:03.237039
metadata_modified 2025-09-23T22:30:03.237045
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' rel='nofollow ugc noopener noreferrer'>Metadata</a>
num_resources 8
num_tags 13
title Tongass Landslide Initiation (Feature Layer)