UW Today


December 22, 2015

Dating historic activity at Oso site shows recurring major landslides

person standing in mud

The large, fast-moving mudslide that buried much of Oso, Washington in March 2014 was the deadliest landslide in U.S. history. Since then it’s been revealed that this area has experienced major slides before, but it’s not known how long ago they occurred. University of Washington geologists analyzed woody debris buried in earlier slides and used…

April 4, 2014

UW researchers, radar company conduct aerial surveys of Oso site

Black and white image of slide

UW researchers made some of the first aerial surveys over the Oso mudslide, using radar technology to map the condition immediately after the slide.