Landslides & Mudslides

Landslides occur when masses of rock, earth, or debris move down a slope. They occur in all U.S. states and territories and can be caused by many factors including earthquakes, storms, volcanic eruptions, fire and human modification of land.

Debris flows, also known as mudslides, are a common type of fast-moving landslide that tends to flow in channels.

The most deadly landslides are the ones that occur quickly, like debris flows, often with little notice. Whether you are at home or out for a hike, the best way to prepare is to stay informed, and understand when a dangerous landslide is likely to occur.

Protect yourself, your family and your property from the effects of a landslide or debris flow:

• Learn what steps to take before a landslide.
• Recognize warning signs for debris flows and fast-moving landslides.
• Know what do do during a landslide and after a landslide.
• Never ignore an evacuation order.