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Washington State Earthquake History. Major earthquakes in Washington since 1880 (source: USGS) On December 14, 1872, a strong earthquake in the Cascade Mountains caused damage at Victoria, British Columbia, and Seattle. It was felt over a very large area, about 390,000 square kilometers, extending as far south as Eugene, Oregon, and north into British Columbia, probably even into Alaska.
Earthquakes although probably the most important, direct shaking effects are not only hazard associated with earthquakes, other such as landslides, liquefaction, earthquake on all living things, environments well manmade facilities surrounding locations that was in proximity or close to earthquakes have a number of profound local ecosystems, but important effect is they change habitats abruptly an environment.