2014 Oso landslide
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A major landslide occurred 4 miles east of Oso, Washington, United States, on March 22, 2014, at 10:37 a.m. local time. A portion of an unstable hill collapsed, sending mud and debris to the south acr
Oso Mudslide on March 29, 2014, view to the northeast
2009 view to the southwest overlooking the slide site (on the left) and the Steelhead Haven plat across the Stillaguamish River. The unstable area is the area of lighter green trees to the right and beneath the river section that is visible. The mudslide flowed towards the upper left, across the river. All of the houses visible in the image were destroyed.
Top view of slide area
Aerial view of slide ridge
Landslide dam
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A landslide dam is the natural damming of a river by some kind of landslide, such as a debris flow, rock avalanche or volcanic eruption. If the damming landslide is caused by an earthquake, it may als
2014 Oso landslide
…located and identified. The slide blocked the North Fork of the Stillaguamish River, causing it to back up eastward. Because of concerns that the mud and debris dam could fail and cause downstream flooding, the National Weather Service (NWS) issued a flash flood watch. On April 2, 2014, with the river flowing in a…
Usoi Dam, caused by a landslide in 1911. At 567 metres (1,860 ft) high, it is the tallest dam in the world