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Due to increased utilization of the State of Oregon network and websites you may experience slower than normal or intermittent performance of our interactive map products. Please be patient.

What is the Statewide Landslide Information Database for Oregon?

SLIDO is compilation of landslides in Oregon that have been identified on published maps. The database contains only landslides that have been located on these maps. Many landslides have not yet been located or are not on these maps and therefore are not in this database. This database does not contain information about relative hazards. The interactive map lets you view information on location, type, and other attributes related to identified landslides in Oregon. The original studies vary widely in scale, scope, and focus, which is reflected in a wide range in the accuracy, detail, and completeness with which the landslides are mapped.

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Look up landslide susceptibility information for your neighborhood.

1. After opening the map, use the “enter address” field at the top left of the map to enter your location:
    Enter address field on interactive maps
2. Select the “Landslide Hazard” box in the Available Layers window.
    landslide hazard layer box checked on

example SLIDO map image

What do I need to use the map viewer?

The map works in modern browsers and on mobile devices as well as desktop computers.

If the map does not seem to work or does not contain the latest data, please clear your browser's history/cache.

SLIDO data are available as downloads or as web services. Learn more.

October 30, 2020: SLIDO-4.2 released. SLIDO-4.2 includes data from DOGAMI Open-File Report O-20-13, Landslide hazard and risk study of Tillamook County, Oregon. SLIDO-4.2 has 53,311 landslide polygons in the Deposits feature class dataset from 359 studies, 14,326 historical landslide point locations, and 72 locations of detailed studies.

See prior updates on the Background page, Development section.