OSO, WA - Workers with the Washington State Department of Natural Resources and the Department of Transportation today are trying to increase the flow of the Stillaguamish River through the Oso mudslide to reduce flooding.
Crews hope to clear the back up of water in the debris and to clear Highway 530 for drivers. Water from the river has backed up since the March 22nd slide.
Geologists and hydrologists with the state, Corps of Engineers, National Weather Service and U.S. Geological Survey also are working with Snohomish County to drain backed-up water at the landslide.
The University of Washington is also helping lead a geotechnical team to investigate what caused the landslide and what might be done to prevent similar disasters.
The team plans to collect information about the steep slope above the Stillaguamish River and why it collapsed.