Statewide Inventory of Landslide Hazards for Idaho Highways

Landslide inventory databases are fundamental tools for documenting and assessing slope stability hazards. They are often used by emergency managers and government agencies to catalog the location and contributing factors of landslides, and to prioritize mitigation efforts. Prior to this project, Idaho did not have a comprehensive, public landslide inventory database. The last statewide landslide inventory was published in 1991 as a static map and is not suitable for modern digital analyses. In this project, the Idaho Geological Survey produced a statewide landslide inventory database to document known slope failures. The goal of this project is to compile and update landslide data in a central database that is publicly accessible via interactive webmap or downloadable digital files. We compiled and reviewed historical landslide data from several sources and added newly mapped landslides to create a comprehensive landslide inventory. The database is available as an ArcGIS service, which supports an interactive webmap hosted by IGS, and is accessible by ITD as a data layer compatible with its internal IPLAN mapping system. The database is designed to be updated as new data are collected.


  • English


  • Status: Completed
  • Funding: $90114
  • Contract Numbers:

    RP 278

  • Sponsor Organizations:

    Idaho Transportation Department

    P.O. Box 7129, 3311 West State Street
    Boise, ID  United States  83707-1129
  • Managing Organizations:

    University of Idaho, Moscow

    Office of Sponsored ProgramsNational Institute for Advanced Transportation Technology
    P.O. Box 443020
    Moscow, ID  United States  83844-3020
  • Project Managers:

    Richards, David

  • Performing Organizations:

    Idaho Geological Survey

    322 E. Front Street, Suite 201
    Bosie, Idaho  United States  83702
  • Principal Investigators:

    Lifton, Zach

  • Start Date: 20181001
  • Expected Completion Date: 20201231
  • Actual Completion Date: 20201231

Subject/Index Terms

Filing Info

  • Accession Number: 01703603
  • Record Type: Research project
  • Source Agency: Idaho Transportation Department
  • Contract Numbers: RP 278
  • Files: RIP, STATEDOT
  • Created Date: Apr 30 2019 1:31PM