The map reveals that a surprisingly large part of the country is at risk for landslides.
Landslides are often deadly and can cause costly damage.
Previous maps were limited due to several factors.
© United States Geological Survey
The data that was used was often fairly low-resolution, which affected accuracy.
Also included in their calculations is a database documenting over 600,000 landslides.
According to the new map, there are some notable problem areas.
Almost the entire west coast carries high levels of risk, as does a considerable portion of Idaho.
Essentially the entire island of Puerto Rico is high risk, as is much of Alaska.
Florida has essentially no risk of landslides anywhere, which is good, because Florida has its own problems.
Topography and geology alone arent perfect predictors, they wrote.
Landslides can even occur in areas with few or no steep slopes.
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