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Cascadia Ground-Failure Viewer
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Total landslides: …
This interactive map displays integrated landslide inventories from across the Cascadia region (Washington, Oregon, California, and British Columbia). The viewer harmonizes datasets from multiple geological surveys and research sources into a consistent format for filtering, visualization, and download. These external datasets are periodically updated by their respective providers. The versions used in this viewer may not reflect the most recent releases. For the latest authoritative versions, please consult the original data sources linked bellow.
Polygon-based mapped landslides derived from field mapping, LiDAR interpretation, and historical records, provided by the Washington State Department of Natural Resources.
Statewide landslide mapping from the Oregon Department of Geology and Mineral Industries, combining detailed studies and reconnaissance inventories.
Landslide inventories compiled by the California Geological Survey from multiple mapping campaigns, including historic and recent events.
Preliminary landslide database includes 11,135-point features. The landslides have mostly been identified using Google Earth and publicly available lidar. Previously published landslide databases have also been incorporated and referenced.
Data processing and submission
The methods used to ingest, clean, standardize, and serve these inventories are documented in the project’s Jupyter-Book. That documentation also describes how contributors can prepare and submit new landslide inventories for inclusion in the viewer.
Post-processing and external hazard products
In addition to harmonizing landslide inventories, the viewer integrates externally developed hazard products. These datasets are spatially interpolated onto landslide features to enable consistent, region-wide filtering and comparison.
The CRESCENT Ground Failure Repository is developed and maintained by the CRESCENT cyberinfrastructure team in collaboration with state agencies, researchers, and the broader Cascadia hazards community. Individual datasets remain the intellectual property of their original authors and organizations.
This project is supported by the National Science Foundation through the Cascadia Region Earthquake Science Center (CRESCENT).