Washington State Department of Ecology
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This site describes Puget Sound shorelines landslide hazards and preventative measures. If you have concerns about your property, please contact your city or county planning department and a qualified geologist.

Oso landslide (SR 530):

Heavy rains bring landslides. Be prepared.  More...


If you have a slide
what to do if you have a slide


about slides
about slides
slide signs
slide signs
frequently asked questions
frequently asked questions


prevention
prevention
getting help
getting help
slope stability maps
slope stability
slide show
slide show


Landslides are common on Puget Sound. Reduce your risks.


Many slides occur after heavy rain. Check your drainage.



Buying property? Investigate slope stability.


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