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Heavy rain raises slide risk

Heavy rain raises slide risk

The National Weather Service anticipates a strong, wet storm for northwest Oregon and southwest Washington tonight. Saturated soil conditions could lead to additional landslides, especially in the Coast Range, Willapa Hills, North Oregon Cascades, and Columbia River Gorge.

Plan to be alert to weather conditions throughout the weekend. Flooding is not expected at this time, but additional landslides are possible. Caution should be used when traveling. People, structures and roads located below steep slopes in canyons and near the mouths of canyons may be at serious risk.

According to the Oregon Department of Geology and Mineral Industries (DOGAMI), the most dangerous places include:
- Canyon bottoms, stream channels, and areas of rock and soil accumulation at the outlets of canyons.
- Bases of steep hillsides.
- Road cuts or other areas where slopes of hills have been excavated or over-steepened.
- Places where slides or debris flows have occurred in the past.

Learn more about landslides and debris flows and how to prepare for them:
Statewide Landslide Information Database (SLIDO): http://www.oregongeology.org/sub/slido/
Landslide and debris flow resources: www.oregongeology.org/sub/Landslide/Landslidehome.htm
Landslide fact sheet (PDF): http://www.oregongeology.org/sub/publications/landslide-factsheet.pdf

 

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