Spirit Lake (Washington)
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Spirit Lake is a lake north of Mount St. Helens in Washington State. The lake was a popular tourist destination for many years until the 1980 eruption of Mount St. Helens. With the eruption and resulting megatsunami, thousands of trees were torn from the surrounding hillside after lake water was displaced 800 feet up the hillside. Lahar and pyroclastic flow deposits from the eruption then blocked the North Fork Toutle River valley at its outlet, raising the surface elevation of the lake by over 200 ft (60 m). The newly raised lake, once it reappeared, was also 10 percent smaller and much shallower.…mehr

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Spirit Lake is a lake north of Mount St. Helens in Washington State. The lake was a popular tourist destination for many years until the 1980 eruption of Mount St. Helens. With the eruption and resulting megatsunami, thousands of trees were torn from the surrounding hillside after lake water was displaced 800 feet up the hillside. Lahar and pyroclastic flow deposits from the eruption then blocked the North Fork Toutle River valley at its outlet, raising the surface elevation of the lake by over 200 ft (60 m). The newly raised lake, once it reappeared, was also 10 percent smaller and much shallower.