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Landslides & Mudflows

Landslides and mudflows usually strike without warning. The force of rocks, soil, or other debris moving down a slope can devastate anything in its path. Take the following steps do be ready.

Before:

  •  Get an assessment of your property on areas vulnerability to land sliding. Consult a geotechnical expert for advice on landslide problems and on corrective measures you can take.
  •  Minimize home hazards.
  •  Plant ground cover on slopes and build retaining walls.
  •  In mudflow areas, build channels or deflection walls to direct the flow around buildings.

Remember: if you build walls to divert debris flow and the flow lands on a neighbors property, you may be liable for damages.

Landslide Warning Signs

  •  Doors or windows stick or jam for the first time.
  •  New cracks appear in plaster, tile, brick or foundations.
  •  Outside walls, walks, or stairs begin pulling away from the building.
  •  Slowly developing, widening cracks appear on the ground or on paved areas such as streets or driveways.
  •  Underground utility lines break.
  •  Bulging ground appears at the base of a slope.
  •  Water breaks through the ground surface in new locations.
  •  Fences, retaining walls, utility poles, or trees tilt or move.
  •  You hear a faint rumbling sound that increases in volume as the landslide nears.  The round slopes downward in one specific direction and may begin shifting in that direction under your feet.

Make evacuation plans: Plan at least two evacuation routes since roads may become blocked or closed.