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Evidence for liquefaction and flooding in the past 1,000 years along the Duwamish River, Seattle, Washington
Geology along the Duwamish waterway, south of downtown Seattle, provides preliminary clues to the city’s earthquake and tsunami hazards. The banks of the dredged waterway expose the muddy deposits of an estuary that formerly drained Mount Rainier. Different outcrops expose evidence for former events. So far, inferred ...
Effects of Beaver Dam-Break Floods on Downstream Channels in King County, Washington
Beaver dam failures were responsible for 13 deaths between 1984 and 2003 and can cause damage to infrastructure and property (Butler and Malanson, 2005). In the Puget Lowland of western Washington State, the unique geologic setting with beaver ponds on steep-sided uplands, surrounding flat alluvial plains of rivers like the ...