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1958 Map of Lake Clark A-1

Name: 1958 Topographic Map of Lake Clark A-1
Creator: U.S. Geological Survey
Published: 1982
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1982

About this map

Iliamna Volcano dominates the southern reaches of this 1958 survey, its glaciated slopes giving rise to a complex network of ice and water. The map documents an environment defined by massive frozen flows, including the Tuxedni Glacier and Johnson Glacier, where prominent crevasses mark the treacherous ice fields.

Drainage from these ice masses feeds the Tuxedni River, which carves through the northern landscape. Local peaks such as Mt Nick stand between the expansive Double Glacier and the southern Umbrella Glacier. This record, based on late 1950s aerial photography, provides a detailed view of the Seward Meridian before later environmental shifts, capturing the exact extent of features like Tongue Glacier and Red Glacier during the mid-century era.