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December 27, 2012

Roosevelt Glacier Retreat, Mount Baker, Washington

Roosevelt Glacier is on the northwest side of Mount Baker, Washington with its accumulation zone joined with the Coleman Glacier. My first visit to Roosevelt Glacier was in 1984, when the glacier had just completed a 30 year period of advance from 1949-1979. ┬áSince 1979 the glacier has been retreating, image below. This post examines Google Earth imagery from 1993, 2003 and 2009 along with field observations from the glacier. …

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December 26, 2011

Lewis Glacier Disappears, North Cascades, Washington

In 1985 during my second visit to the Lewis Glacier, North Cascades, Washington was the first time I confronted the idea of a glacier disappearing. We were able to peer down several crevasses and see the bottom of the Lewis Glacier, measurements indicated a maximum depth of 12 meters over an area the size of a football field. This glacier had been selected for the North Cascade Glacier Climate Projects’s …

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February 1, 2010

Colonial Glacier Retreat and Hydropower

Colonial Glacier is on the southwest side of Colonial Peak in the Skagit River Watershed, North Cascades of Washington. The North Cascade Glacier Climate Project has made six visits to this glacier over the last 25 years. Meltwater from this glacier enters Diablo Lake above Diablo Dam and then flows through Gorge Lake and Gorge Dam. These two Seattle City Light hydropower projects yield 360 MW of power. As this …

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