Landslide Reconnaissance Following the December 3, 2007 Storm - Mason County
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Landslide Reconnaissance Following the December 3, 2007 Storm - Mason County 
 

North Lilliwaup Landslides

During an aerial reconnaissance on December 10th, we documented two landslides along Highway 101. The landslides appeared to have covered part of Highway 101 and most likely were landslides within thin soils overlying bedrock, which was a common theme during the storm event.

Location of events

Map 1: Location map of two landslides north of Lilliwaup along Highway 101. Click on map to view larger image.

Figure 1: This small landslide, which is dead center in the photo, is located just north of Eagle Creek. It appears to have blocked at least one lane of Highway 101 but had been cleared. Note the bedrock exposure in a similar but older landslide to the far left of the photo. Click on photo to view larger image. (photo by Kelsay Davis)

Figure 2: Looking towards Lilliwaup Bay, note the small landslide just left of the rectangular black rock area above the road (mitigated landslide). The larger landslide to the right, which has been mitigated, was a landslide that failed during the 1999 storm event that also triggered the Jorsted Creek landslide. Click on photo to view larger image. (photo by Kelsay Davis)

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 Contacts

Stephen Slaughter
Geology & Earth Resources Division, Hazards Geologist
Washington State Department of Natural Resources
360-902-1498
Fax 360-902-1785
stephen.slaughter@dnr.wa.gov

 Files

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