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2017 Map of Mount Saint Helens

Name: 2017 Topographic Map of Mount Saint Helens
Creator: U.S. Geological Survey
Published: 2017
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2017

About this map

Mount Saint Helens stands at the center of this modern survey, revealing the complex volcanic topography within the Gifford Pinchot National Forest. The map documents the geological aftermath of the late 20th-century eruption, detailing the 1980 Crater, the emergent Lava Dome, and The Breach that opens toward the north. This survey illustrates how the landscape was reshaped by massive debris and volcanic events, showing the expansive Floating Island Lava Flow and the Swift Creek Flow that extend from the peak.

Beyond the primary crater, the map traces ridges and valleys that define the drainage patterns for the N Fork Toutle River and S Fork Toutle River. To the northeast, Spirit Lake remains a prominent landmark alongside the Plains of Abraham, while the southeastern slopes are marked by the distinct Worm Flows and Ape Canyon. Modern forest roads, such as Nat For Dev Rd 83, provide the primary access through this evolving terrain.