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Zigzag Glacier

Zigzag was a large, by area, glacier on the southern slope of Mt. Hood, flowing on the same ~1500-year-old volcanic debris flow substrate as Palmer Glacier. As of 2020, it is still a glacier, with crevasses and convex terminus, but lacks an accumulation zone. The glacier has lost much of its area and a good portion of its ice is now stagnant. It is only a matter of time before all of Zigzag becomes a stagnant ice mass. 


Latitude: 45.361

Longitude: -121.717

Aspect: 240.9

Head (m asl) 1950s: 3190

Terminus (m asl) 1950s: 1790

Area (km^2) 1950s: 3.116

Head (m asl) 2020s: 2830

Terminus (m asl) 2020s: 2590

Area (km^2) 2020s: 0.101

Status: active flowing ice but lacking an accumulation zone; near stagnation 

Last observation: 2020

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