A Landslide Is…

• A rapid shift in land mass – Typically associated with

periods of heavy rainfall or rapid snowmelt

– Tends to worsen effects of flooding that often accompanies landslides

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Areas Prone to Landslides

• Existing old landslides

• Bases of steep slopes

• Bases of drainage channels

• Developed hillsides where leach-field septic systems are used

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Landslides in CO

• Like with severe weather, tornados, and winter storms – there are landslide advisories, watches, and warnings

• Pay attention to these, especially when traveling on roadways through the mountains

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A Debris Flow Is…• Essentially a river of solid

materials carried along by water by flash floods or heavy snow melt

• A debris flow can move as fast as an avalanche and go for miles from the initiation point before stopping

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The aftermath of a debris flow following the High Park fire 2012

Debris Flows in CO

• In CO we most often see debris flows following floods in burn scar areas

• The eroded soil cannot absorb water and it collects at the top, once it becomes saturated the land will give way along with whatever is on top of it

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During a Landslide or Debris Flow• Stay aware of your environment

– Listen for sounds that could indicate moving trees or rocks

– Avoid river valleys and low-lying areas– Notice change in water levels and muddiness– Do not cross a bridge if you see a debris flow

approaching it– If you cannot escape a landslide or debris

flow, curl into a solid ball and cover your head as best you can

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After a Landslide or Debris Flow

• Check for people who may be injured or trapped but do not enter the landslide/debris flow area Direct responders to their locations when they

arrive• Check for downed power lines and report

them to the utility companies• Begin replanting to avoid further erosion and

land slides

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