According to the American Red Cross, landslides have occurred in almost every state in the U.S.
The following resources from U.S. Government agencies and nonprofit organizations can help you deal with this type of emergency.
Things you can do to protect yourself, your family and your property from the effects of a landslide or debris flow
Fact sheet on what to do in case of landslides and mudslides
(Centers for Disease Control)
What to do after a landslide
(U.S. Geological Survey)
A list of supplies to collect in case you have to evacuate following a landslide
(American Red Cross)