Boulder Glacier is located on the southeast slope of Mount Baker, a stratovolcano near the Pacific coast of North America in the Cascade Range of Washington. Boulder Glacier is the sixth largest on Mount Baker with an area of 1.3 mi (3.4 km) (Post et al. 1971). It flows from the summit crater between Grant Peak (10,781 feet / 3,286 m) and Sherman Peak (10,140 feet / 3,091 m) to about 5,000 feet (1,524 m). It is noteworthy for retreating 1,480 fee...
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Boulder Glacier is located on the southeast slope of Mount Baker, a stratovolcano near the Pacific coast of North America in the Cascade Range of Washington. Boulder Glacier is the sixth largest on Mount Baker with an area of 1.3 mi (3.4 km) (Post et al. 1971). It flows from the summit crater between Grant Peak (10,781 feet / 3,286 m) and Sherman Peak (10,140 feet / 3,091 m) to about 5,000 feet (1,524 m). It is noteworthy for retreating 1,480 feet (450 m) between 1987 and 2005 leaving newly exposed rock and soil behind.
Between 1850 and 1950, the glacier retreated 8,700 feet (2,650 m). William Long of the United States Forest Service observed the glacier beginning to advance due to cooler/wetter weather in 1953. This was followed by a 2,438 feet (743 m) advance by 1979. The 1979 terminus position is where the small stream enters Boulder Creek from the southwest. Observations in 2005 suggest that the lowest thousand feet or several hundred meters of the glacier is stagnant and will...
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