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1983 Map of Mount St. Helens

Name: 1983 Topographic Map of Mount St. Helens
Creator: U.S. Geological Survey
Published: 1984
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1984

About this map

1980 Crater and its central Lava Dome dominate this topographic study, produced just years after the cataclysmic eruption. The landscape is defined by the massive collapse of the northern flank, labeled here as The Breach, which opened the path for the South Fork Toutle River. Surrounding the summit, several remnant ice masses including the Forsyth Glacier, Nelson Glacier, and Shoestring Glacier are mapped alongside the newer volcanic features.

South of the peak, the boundary for the Mount St Helens National Volcanic Monument is established within the broader Gifford Pinchot National Forest. This area reveals older geologic formations like the Lava Caves and Butte Camp Dome. The contrast between the devastated northern slopes and the surviving timber and water features to the south, such as June Lake and Swift Creek, illustrates the immediate geographical impact of the eruption on the Skamania County wilderness.