Collier Glacier
Collier is a large glacier on the northwest flank of North Sister. It is one of the most studied glaciers in Oregon, with direct observations of its mass balance occurring in the late 1980s to mid 1990s.
Information
Latitude: 44.165
Longitude: -121.785
Aspect: 345
Head (m asl) 1950s: 2800
Terminus (m asl) 1950s: 2220
Area (km^2) 1950s: 1.170
Head (m asl) 2020s: 2720
Terminus (m asl) 2020s: 2340
Area (km^2) 2020s: 0.490
Status: active
Last observation: 2021
collier_june_2020
IMG_8633 2
IMG_8601
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