Landslides/Mudslides

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Debris flows, sometimes referred to as mudslides, mudflow, lahars, or debris avalanches, are common types of fast-moving landslides.  These flows generally occur during periods of intense rainfall or rapid snow melt.  Debris flows, sometimes referred to as mudslides, mudflows, lahars, or debris avalanches, are common types of fast-moving landslides.  These flows generally occur during periods of intense rainfall or rapid snow melt.  They usually start on steep hillsides as shallow landslides that liquefy and accelerate to speeds that are typically about 10 miles per hour, but can exceed 35 miles per hour.  The consistency of debris blow ranges from watery mud to thick, rocky mud that can carry large items such as boulders, trees, and cars.  In areas burned by forest and brush fires, a lower threshold of precipitation may initiate landslides.

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