This graph show the number of eruptions of the volcanos in the Cascade Range. Starting north, in Washingon, there is Mount Baker that has erupted once between 2,000 years ago and present time. Glacier Peak erupted once more than 2,000 years ago and 5 times within the last 2,000 years. Mount Rainier erupted once over 2,000 years ago, and three times in the last 2,000 years. Mount St. Helens erupted once over 4,000 years ago; 7 times between 4,000 and 2,000 years ago; 5 times in the last 2,000 years and once in the present time. Mount Adams has not erupted over the last 4,000 years.

In Oregon, Mount Hood erupted twice in the last 2,000 years. Mount Jefferson has not eruped in the last 4,000 years. Three Sisters erupted 3 times between 4,000 years ago and present time. Newberry Volcano erupted one between 4,000 and 2,000 years ago and once within 2,000 years. Crater Lake and Mount McLoughin have not erupted in the last 4,000 years.

In California, Medicine Lake Volcano and Mount Shasta erupted 3 times more 2,000 years ago and 3 times between 2,000 and the present time. Larssen Peak erupted twice in the last 2,000 years.

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