Washington is one of the most landslide-prone states in the country, with hundreds to thousands of events each year. The direct cost of landslide damage includes the repair of roads and property. Indirect costs, such as loss of property value and tax revenue, and environmental effects, such as the degradation of water quality, can exceed direct costs. The Washington Dept. of Transportation routinely budgets $15 million a year for cleanup of landslides on highways. This fact sheet is designed to provide general information about landslide hazards and possible warning signs. Individual landslides have many variables and are not predictable.
- Fact Sheet