Flooding risk dimishes, but landslide threat remains
December 13, 2010
By Warren Kagarise
NEW — 6 a.m. Dec. 13, 2010
Issaquah Creek has crested and the flood watch has been lifted for the region, but National Weather Service forecasters said the landslide risk should linger in the days ahead.
Runoff from the heavy rainfall could also trigger landslides and debris flows. The saturated soil means reduced stability and a greater chance of landslides.
Cumulative rainfall during the last three weeks has soaked the ground beyond the U.S. Geological Survey threshold for landslides. The risk should diminish in the days ahead.
Seattle Public Utilities offers tips for residents to protect people and property from landslides:
- Inspect sloping areas for indications of slope movement — such as cracks in the ground and newly tilting trees — and erosion.
- Check downspouts to make sure the spouts function properly and route to a safe location.
- Be sure that the irrigation system is shut off.
- Keep fill and yard waste off slopes.