Vydavatel U.S. Geological Survey, Department of the Interior
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This map layer shows point locations of costly individual landslide events in the 50 United States and Puerto Rico. Landslide locations were determined from published landslide maps and coordinates, and in several cases the points locate the nearest town or other geographic feature. In all cases the locations should be considered approximate. Costly events are defined as those where there was public or private property damage or loss of human life. Landslides are defined in a broad manner, to include most types of gravitational mass movement such as rockfalls, debris flows, and the failure of engineered soil materials. Landslide causes include earthquakes, reservoir draw-downs, and heavy precipitation.