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Item: 001670 
Image of O-09-06 CD

O-09-06 CD

Open-File Report O-09-06: Coastal Erosion Hazard Zones in Southern Clatsop County, Oregon: Seaside to Cape Falcon. The coast of southern Clatsop County, Oregon has a notorious history of large deep seated landslides that have severely impacted coastal development. In February 1961, heavy precipitation destabilized a 3,000-foot-long by 1,000- foot-wide landslide that closed Ecola State Park. Perhaps
more famous is the February 3, 1974, Silver Point landslide that involved over 2 million cubic yards of material, that vertically displaced U.S. Highway 101 by 35 feet and laterally shifted houses near the landslide 50 to 80 feet westward. 2009
Publisher: DOGAMI

Open-file
by Robert C. Witter, Thomas Horning, Horning Geosciences, and Jonathan C. Allan

Size: CD-ROM

Price: $15.00

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