Data collected and managed by Forest Service programs is available in a map service and two downloadable file formats – in a shape file and an ESRI file geodatabase.
Metadata is available that describes the content, source, and currency of the data.
You can filter the list by the topic categories in the menu at the left to help you find information you are interested in.
You can view the feature classes in a single dataset by clicking on the name of the parent dataset at the bottom of the abstract.
Shapefile Limitation Warning:
The Enterprise Data Warehouse Team has identified certain technical limitations of shapefiles which
make them not suitable for all datasets within this clearinghouse. Due to file size limits as well as attribute name
length and field length restrictions leading to inevitable data loss, the EDW Team is unable to support
shapefile exports for larger datasets. There are other methods to accessing this data in addition to the Esri File
Geodatabase (FGDB) including the map service or the Geospatial Data Discovery Tool.
Requests for KML/KMZ output
The Enterprise Data Warehouse Team tested exporting out to KML/KMZ files as a deliverable and due to the complexity and size of the datasets this has been unsuccessful.
To obtain a KML file for any EDW dataset, go to the Geospatial Data Discovery Tool and search for the dataset. An option to download to KML is available from that website.
If you have questions, contact: SM.FS.data@usda.gov.
This is a once-over landslide inventory of the Tongass National Forest. This inventory includes all mass wasting features--including talus slopes, snow avalanche fields, and snow avalanche chutes. Each of these are coded differently in the attributes. It may be necssary to exclude several polygons in this data set when using it to determine landslide rates. Most of these landslide polygons were digitized on the 1998 to 2010 ortho photos 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. All of the landslides included once-over completed in FY2019 were age bracketed. There is an associated Points feature class that are the landslide initiation zone approximations. These points only exist for true landslides--debris avalanches, debris torrents, combination debris avalanches/torrents, slumps, rotation failures, and rock fall-initiated failues.
Purpose:
Landslide inventory of the Tongass National Forest Proclamation Boundary. Work completed in FY 2019
This is the point feature class for theonce-over landslide inventory of the Tongass National Forest. Most of the landslide polygons were digitized on the 1998 to 2010 ortho photos 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 is only the point layer with initiation points for debris avalanches, debris torrents, combination debris avalances-debris torrents, slumps, rock fall initiated failures, and rotational failures.
Purpose:
Estimated initation points for the landslide inventory of the Tongass National Forest Proclamation Boundary. Intended to accompany the polygon feature class named TongassLandslideAreas. Updated in FY 2019
