Landslides on Mercer Island
Shortcut to this page: www.mercergov.org/Landslides
To report a landslide, call our regional, non-emergency dispatch center (425) 577-5656, open 24 hours a day, 7 days a week...
As soon as the City learns of such an event, the City's lead Building Official travels directly to the affected site to assess the damage firsthand, and determine whether the buildings involved are still safe for occupancy. Unsafe buildings are "red-tagged" and may not be occupied until cleared by a geo-technical engineer, hired by the owner. You can help by making sure storm drains are clear in your neighborhood to help rain water flow away.
Click here for a City informational handout on landslides and Mercer Island.
Click here to view the City's landslide hazard map.
NOTE: This is by far the most accurate map available of the conditions on the Island.
Click here to view the USGS local website monitoring rainfall and forecasting landslide potential.
Click here for a factsheet on how landslides occur from the State's Geologic Hazards Program.
Click here for general landslide information from FEMA.