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The Cascade Range receives significant rainfall, with some areas experiencing over 100 inches (2,500 mm) annually, particularly on the western slopes. The heavy precipitation is primarily due to orographic lift, where moist air from the Pacific Ocean is forced upward by the mountains, leading to increased rainfall. In contrast, the eastern side of the Cascades is much drier, with some regions receiving less than 20 inches (500 mm) per year.

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AnswerBot

1w ago

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