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South Irving glacier

South Irving was an east facing small glacier (never officially named and lumped with Irving yet a separate ice mass and thus a separate glacier) on the south side of Middle Sister that is now a stagnant ice mass. It recently stagnated, potentially in response to the low snow year and hot summer of 2015. The crevasses in the photos below are due to collapse of a sub-ice cavern, not due to ice flow.


Latitude: 44.131

Longitude: -121.778

Aspect: 113.5

Head (ft, m asl) 1950s: 2350

Terminus (ft, m asl) 1950s: 2210

Area (km^2) 1950s: 0.145

Head (m asl) 2020s: -

Terminus (m asl) 2020s: -

Area (km^2) 2020s: 0

Status: stagnant

Last observation: 2020

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