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Thursday, March 11, 2010

LA CANADA-FLINTRIDGE, CA - FEBRUARY 6:  A debr...

Protect Yourself from Landslides Before it Happens

Protect yourself from the effects of a landslide or debris flow:

* Do not build near steep slopes, close to mountain edges, near drainage ways, or natural erosion valleys.
* Get a geologic hazard assessment of your property.
* Contact local officials, state geological surveys or departments of natural resources, and university departments of geology. Landslides occur where they have before, and in identifiable hazard locations. Ask for information on landslides in your area, specific information on areas vulnerable to landslides, and request a professional referral for an appropriate hazard assessment of your property, and corrective measures you can take, if necessary.
* If you are at risk from a landslide talk to your insurance agent. Debris flow may be covered by flood insurance policies from the National Flood Insurance Program (NFIP).

* Minimize home hazards:
o Have flexible pipe fittings installed to avoid gas or water leaks, as flexible fittings are more resistant to breakage (only the gas company or professionals should install gas fittings).
o Plant ground cover on slopes and build retaining walls.
o In mudflow areas, build channels or deflection walls to direct the flow around buildings.
o Remember: If you build walls to divert debris flow and the flow lands on a neighbor's property, you may be liable for damages.

Recognize Landslide Warning Signs

* Changes occur in your landscape such as patterns of storm-water drainage on slopes (especially the places where runoff water converges) land movement, small slides, flows, or progressively leaning trees.
* 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.
* A faint rumbling sound that increases in volume is noticeable as the landslide nears.
* The ground slopes downward in one direction and may begin shifting in that direction under your feet.
* Unusual sounds, such as trees cracking or boulders knocking together, might indicate moving debris.
* Collapsed pavement, mud, fallen rocks, and other indications of possible debris flow can be seen when driving (embankments along roadsides are particularly susceptible to landslides).