Between September 6 and 10, 2003, a glacial lake outburst flood (GLOF) was recorded when the proglacial lake at the head of the glacier burst through a glacial dam, and water from the lake carved a trench down the center of the glacier for over a half-mile (.8 km). An estimated 650 million gallons of water were released in four days, raising the flow level of Dinwoody Creek from 200 cu ft (5.7×10−9 km3) per second to 900 cu ft (2.5×10−8 km3) per second, as recorded at a gauging station 17 mi (27 km) downstream. Debris from the flood was deposited more than 20 mi (32 km) downstream. The GLOF has been attributed to the rapid retreat of the glacier, which has been ongoing since the glacier was first accurately measured in the 1960s.[3]
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